 | | Photocells?
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I am seeking help in locating suppliers of quality photocells or light sensing equipment suitable for use in a handyboard environment. Thanks! (26 years ago, 29-Dec-98, to lugnet.robotics.handyboard)
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| | http://tcw2.ppsw.rug.nl/hb/hbassem/index.html/join mailing list
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I wish to join the handy board mailing list. (26 years ago, 29-Dec-98, to lugnet.robotics.handyboard)
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| | DC Motor Manufacturers
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Hello everyone, Has anyone found a good source for DC motors? I am looking for small motors to use as direct drive movement of a small 1.5 LB robot. Any help is greatly appreciated! Bill Denzel Senior Mechatronics Student California Polytechnic (...) (26 years ago, 27-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloading problems
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I haad similar problems and then I realized that I did not need to download pcode or anything special. I just ran IC and it connected -- all the ports are working fine... Scott Sherman (...) (26 years ago, 27-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloading problems
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(...) please download the latest 6811 Downloader for Macintosh, just posted last week on the HB web site. Fixes compatibility probs. (...) th the (...) OK, yes, you've already downloaed. (...) plus (...) please download these files from the HB web (...) (26 years ago, 27-Dec-98, to lugnet.robotics.handyboard)
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| | Downloading problems
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Fred This is a followup to your answer regarding downloading problems 1. The 6811 Downloader does not seem to work with HB. I get mesaages varying from recieved 0, wanted 255-or serial port not responding. I am DL from a MAC PPC 6500 OS 8. 2. This (...) (26 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | RE: servo motor
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Since the System 3000 servos appear to be made by Futaba, and they specify a standard Futaba "J" connector, my guess is that they would plug right in. Futaba practice is as you state: red=5V, black=common, white=signal. Brett Anthony -----Original (...) (26 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Re: CHARGER BOARD PROBLEM(URGENT)
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phillip, please go through the sequence of tests in the assembly directions (as if you were building the serial/charger board from scratch), and indicate the point at which you first detect a problem. (URL) your message you said: (...) (26 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloading problems
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Use 6811 Downloader to download pcode_hb.s19. Power cycle, and the Handy Board should beep and display a version message on its LCD screen. Then, run IC modem or IC printer depending on which port you are using. It should be configured to boot with (...) (26 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Downloading problems
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I assembled the HB board some 2.5 years ago. At that time it seemed to work very well. The hook is that I'm quite strong on the Hardware side and rather anemic with regard to software. In the earlier time I would download it from a Mac 11si-no (...) (26 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control? Please help!
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the short answer is that you can't use 3v motors with the handy board. the FAQ states this: (URL) you use the "separate motor power supply" hack, with a 6v battery, you might be able to get 3v motors to work. see (URL) your message you said: (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | CHARGER BOARD PROBLEM(URGENT)
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hI FRed, anothony and others, I just plug in the RJ11 in the HD and charger board. It supposed that the red LED on the charger board should light up. It failed to light up. When I plug in the adaptor onto the charger board, the red LED light up but (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | Merry Christmas!
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Merry christmas! Megan See you real soon, you rock my world! Justin thanks for the many rides to camp Erv Shine on you crazy diamond! Joel be careful! See you soon. Jeremy Don't work too hard, *laugh* Jacob See ya soon, take care. All my A-Rocket (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | dc motor output control? Please help!
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hi everyone, i need some help on controling the output voltage of the dc motor ports. the o/p of the motor port is 12V. but my motor required voltage is only 3V. i like to know if there is any way to clamp down the voltage to 5V or lesser. i try (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | servo motor
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Hello again, I am using a Tower Hobbies System 3000 servo motor on my expansion board. Does anyone know if the black, red, and white wire match up with ground, 5 volts, and control respectively for that particular brand of servo motor? Scott Sherman (...) (26 years ago, 24-Dec-98, to lugnet.robotics.handyboard)
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| | Source of Handyboard in UK?
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I have a small quantity of handyboard pcb's available for 16GBP the set, handyboard plus charger including the hard to find ZTX darlington. Post paid in UK, Visa and Mastercard accepted. This is a limited offer, once they are gone I will not be (...) (26 years ago, 24-Dec-98, to lugnet.robotics.handyboard)
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| | Happy Holidays
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Happy Holidays For All !!! (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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I've had a similar problem, make sure your servo power is fully charged. An undercharged system will sometimes drive all the way one way. Mike Ross ---...--- From: shsc9801@condor.stcl...state.edu] Sent: Wednesday, December 23, 1998 8:04 AM To: (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | serial ports question
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hi, can i have 2 sets of serial communications at the same time with the handyboard? i have 1 set that is between the handyboard and the SSC via pa7. i want to have another channel, pc serial application to handyboard, in that one direction only, (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: encoder and motor questions
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I am doing something very similar, but instead I am trying to follow a black line on a white background. Either way, I am using IR detectors and emitters. They are readily available and work very well. I'm sorry I have never used an encoder to know (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | Re: expansion board - servo control
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hard to tell what is wrong. do you have a scope so that you can view the servo control signal. fred In your message you said: (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | encoder and motor questions
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dear viewers here are some questions i need to ask: 1) my DC motor comes with a 10 pin optical encoder(supply current-10mA) pin 1- GND pin 2- Vcc pin 3- dir pin 4-standyby pin 5 and 6 - A1 and A2 pin 7 &8 - B1 and B2 pin 9 and 10 - Z1 and Z2 how do (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | expansion board - servo control
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Hello, I emailed this to the handy board list and got one response. I am mailing it back hoping that I can get some more responses from those on the list and perhaps fred. (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | charger board problem ( URGENT)
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hI Anthony and others, I just plug in the RJ11 in the HD and charger board. It supposed that the red LED on the charger board should light up. It failed to light up. When I plug in the adaptor onto the charger board, the red LED light up but NOT the (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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I also saw a similar problem while experimenting with an Atmel microcontroller and a Futuba servo. My problem ended up being that I had forgotten to have a common ground between the controller and the servo. Once I connected the grounds everything (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | new 6811 Downloader for PowerMac G3's!
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Hi everyone, I've built a new version of a 6811 Downloader application for Mac that works fine with PowerMac G3's. (It also works with older Macs.) You can download it from the Handy Board home page: (URL) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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How about lifting pint 8 of the L293 chip and running a wire from it to a 7805 regulator (not the one used for logic). You could also run the wire to a separate battery pack. 4 NiCds in series gets you real close to 5V with no regulator. In motor (...) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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On my first robot, I just took a resistor in-line and used that. It got very hot, though, and didn't work evenly (some of them must have started to burn out before the others did....) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: I need a poloroid sonar board pinout.
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Wayne Try this link. (URL) It shows modifications for interfacing the one step board to a microcontroller. I also have an old one step ($1 at a garage sale) but I have not tried the modifications shown for use with the handyboard. I have taken the (...) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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-----Original Message----- From: shsc9801@condor.stcl...dstate.edu [mailto:shsc9801@con...state.edu] Sent: Monday, December 21, 1998 1:39 PM To: handyboard@media.mit.edu Subject: expansion board - servo control Hi, I stopped working with the (...) (26 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | expansion board - servo control
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Hi, I stopped working with the handyboard for a while but just started back up again. I put the expansion board onto my handyboard and began testing it. After testing the general tests done before with just the handyboard I started testing the servo (...) (26 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | unable to download P_code
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Hi everybody, When the one end of the RJ11 cable plug into the RJ12 side entry(J10), it supposed the red LED on the charger board will light up. However, it failed to light up. Hence, this made the booststrap failed and I unable to download the (...) (26 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | FW: change of address
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-----Original Message----- From: Jaron Paludanus [mailto:j.paludanus@....a2000.nl] Sent: donderdag 17 december 1998 23:58 To: Fred G Martin Subject: change of address I'm not sure my previous mail came through but I have gone high-speed by cable (...) (26 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | Unable to download P_code
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Hi everybody, When the one end of the RJ11 cable plug into the RJ12 side entry(J10), it supposed the red LED on the charger board will light up. However, it failed to light up. Hence, this made the booststrap failed and I unable to download the (...) (26 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | Help Needed -Reply
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You don't need to put that code into eeprom. Just put the code inside a main() function block like this: void main(void) { YOUR CODE } Be sure and include the start button logic at the start of your code. The handyboard with start and automaticly (...) (26 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | I need a poloroid sonar board pinout.
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I got a hold of a Poloroid OneStep Sonar camera at the second hand store, but it does not seem to match any of the pinouts I've seen on the Web... I've aready seen the pinout at WIRZ, but it is not the same. this board has 16 pins all at the edge of (...) (26 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Help Needed
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Ever tried making a main() function? I don't have a handyboard yet, but I think it runs without the connection... See you, Cesar (26 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Help Needed
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Hi I have an IC program (c text format), and I want to download this program to the eeprom of the handyboard and run it without having connection with the host PC (remove the phone cable) and use the start button to run. How I can convert my c file (...) (26 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Re: stepper motors from 5 1/4 drives
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Hi! (...) okay, another newbie reply :-) After I received this message I opened several 5 1/4 drives that were going to trash at my job and took all the stepper motors and integrated circuits. Here's what I figured out: 1 - All the stepper motors I (...) (26 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Re: a/d range
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Hi friends! Thank you for the replies about this topic. Now I could get a Reference Manual too... The a/d range is determined by the references given to the VrefH and VrefL pins. But be careful about this: "There should be at least 2.5V between (...) (26 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | dc motor output control???...???
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hi everyone, i need some help on controling the output voltage of the dc motor ports. the output voltage is 9.6V and i like to know if there is any way to clamp down the voltage to 5V or lesser. i try using a enternal resistor but the output signal (...) (26 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | Re: LCD configs (was:Suppliers and rf link)
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john calhoun, Mine just arrived and they are 1 X 16 connectors. I ordered 2035TNLD/Y displays for $8.00 each. You might want to order now while they have the 2X16 displays with 1X16 connectors. I have soldered the connector on and tested it and its (...) (26 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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Maybe you can put a series of diodes in series and in parallel but the other direction to reduce the voltage. H-bridge +- +- +- +- motor H-bridge -+ -+ -+ -+ Good luck, James (...) (26 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | RE: urgent request help !!!!
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What about the display board itself? Could it be that one of the SMT parts on the board is dead? Or a trace on the LCD is shorted? --phil (26 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | RE: urgent request help !!!!
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-----Original Message----- From: phillip chia [mailto:philchia@sin...et.com.sg] Sent: Friday, December 18, 1998 7:04 AM To: handybd Cc: Mr Peter Lim Subject: urgent request help !!!! Hi Fred and others, I very desperate to debug the problem that (...) (26 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | dc motor output control
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hi everyone, i need some help on controling the output voltage of the dc motor ports. the output voltage is 9.6V and i like to know if there is any way to clamp down the voltage to 5V or lesser. i try using a enternal resistor but the output signal (...) (26 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloader and a/d
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Cesar, (...) According to my book, you can set the reference voltages to anything from Vss to Vss + 6.0 V (notice that this is higher than Vdd). The A/D result is a ratioatic comparison for the sample voltage to the references. Page 48 of the (...) (26 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Replacing L293D with L298H
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Hi Fred and others, I very desperate to debug the problem that took place in my HD. When I download the P_code, it is successfully downloaded. However, when the next instruction ask to reset the board, no words of sentence appear on the LCD. Only 16 (...) (26 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Downloader and a/d
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Hi friends! First thank you a lot for the advices on the FingerBoard. It really gets near to what I need, but that ram chip is another headake. So I believe more in a "light" version of the Handyboard right now, later I'll make a specific version (...) (26 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Re: HD LCD problems
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(...) On a lark, I'll suggest that perhaps U6 is damaged. If you have another 74HC138 around, try swapping it for the one on your HB. I had a "similar" problem (although not identical) and was able to diagnose the 74HC138 as the problem. I too was (...) (26 years ago, 17-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Hot serial interface board
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<<snip>> So here's my question. Does your serial interface board run hot, i.e. noticeably hot to the touch. On my serial interface board (version 1.1 as printed on the board) the white ceramic block gets very hot along with the power chip? in the (...) (26 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | A Poloroid Sonar question.
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I've got a poloroid sonar question. I got a hold of a Poloroid OneStep Sonar camera at the second hand store, but it does not seem to match any of the pinouts I've seen on the Web... This board has 16pins, I believe this board is manufactured by TI. (...) (26 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Mapping
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Thanks for the tip on reflection error. I'll have to build in a function to weight the position accordingly. I'm trying to stay away from occupency grids and use the native vectors to conserve memory while maintaining accuracy. I may have to resort (...) (26 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | HD LCD problems
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Hi FThompson, Fred and other, I encountered some problem in the downloading. I was successfully able to download the p_code into the HD. However, When the instruction proned me to reset the board,it always appears on the LCD without any lettering (...) (26 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Beginner's Help
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(...) I've never hot HBDL to work, and I've tried it on a 386 (laptop), 486 and Pentium. Don't know why: just won't work under win3.11 win95 or win98. The DOS one I've used with quite a bit of success. Make sure you are restarting the computer (ie, (...) (26 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Beginner's Help
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Richard, Thanks for the help. I finally got the board to accept the pcode. I acquired a PS/2 mouse to free up my COM1 port. I used the HBDL.exe program that came with the board. After several unsuccessfully attempts to program the board, for some (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | 68hc11a1 x 68hc11a8 and IC hardware
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Hi people! I'd like to know two things: 1) Can I use the 68hc11a8 instead of the 68hc11a1 in the Handyboard, without recompiling Interactive C? 2) What's the minimum hardware to run Interactive C? I just want to blink a led to see if the hb is (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | HB Reset not executing main().
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I built two more Handyboards and I've noticed something odd. When I download a program with a main() function, and reset the board, main() does not get executed. I thought it was supposed to. I'm using IC v3.1 (for the Mac) and Handyboard version (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Beginner's Help
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Make sure that your com port 2 is actually wired to the motherboard I've heard a lot of stories with com ports not working because they forgot to connect the ribbon cable. Check that first. Try booting ito dos and use the DL.exe instead of the HBDL (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: some kind of dividing circuit?!?!?!?!
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In reference to your question about the motor with encoders. I know this isn't a software solution, but what if you used an external hardware (chip) counter that reset after 2^(number of bits) clicks. Then send resets as your steps to the (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Mapping
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(...) Watch the critical angle for the sonar too. If the sonar doesn't hit almost straight on, some of the energy will be reflected off at an angle, and may provide false longer distances. Smooth surfaces will have a lower critical angle then coarse (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Mapping
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I've just started experimenting with mapping and these are my thoughts on it. Drop the robot anywhere in its environment. The robot has a sonar hooked to a servo so the sensor can be scanned horizontally. As the sensor sweeps from left to right, (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: SRAM and orLCD problem
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eric, i don't have a definitive answer, but here are two things: 1. You *NEED* the reset chip, whether it's a DS1233 or the MC34064HC, I don't care, but you must have a device that asserts reset (pulls the line low) when the system voltage falls (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Mapping
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Hi, Could anyone tell me how a robot can do mapping in a room. Thank you (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Beginner's Help
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Has anyone had this problem: I am running win 98 on P200 MMX, and com1 is used by a serial mouse. I just bought the board, serial expansion board, and cables from Gleason Research. Comm2 is usually used by my internal modem, but I removed it and (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | SRAM and orLCD problem
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Hi, I'm tring to assembly a Handy board and I get to section 6. "The beeper and LCD circuit". In section 4 I've got the pcode_hb downloaded in the 68HC11A1 and the error when DL.EXE comes in the second phase. (I use the DOS version from Randy (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Handyboard communication
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Just a simple question- Does the HB operate under Half- or Full Duplex Communication? If it depends on the program, what is the nature of IC (half/ full duplex) Thanks, Dave (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Fw: Please help! HD jammed !!!
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(...) to (...) Besides, (...) on (...) with (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Small Contribution...
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Howdy Folks, I just finish writing the first version of ICD; a small Expect server, that listens for TCP/IP requests on port 2010, and forwards them to IC (Interactive C). Use it to make web, email, and even 2 way paging interfaces to the Handy (...) (26 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | recompile/assemble pcode.asm for HB
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Hi HB-Users! I tried to compile/assemble the pcode for the hb to get a running version for another display than 16x2. I downloaded the environment for pc's (containing gcc and as11 and pcode - but not for hb). Than a draw the pcode.asm for hb. When (...) (26 years ago, 14-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Source of 68HC11 in UK?
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Hi peter, you can get the 68hc11 from r.s or farnell here is the farnell catalog number and price. (URL) MC68HC11A1FN Price. £7.50 cat num. 295-619 cheers Russ... -----Original Message----- From: peter@xkeys.demon.co.uk (...) (26 years ago, 14-Dec-98, to lugnet.robotics.handyboard)
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| | Problems getting a L298H based motor controller to work...
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Hi, On Friday I received a L298H based motor controller kit from JCM Electronics. The assembly was fairly painless, however I can't seem to get it to work. I get 5 volts out of the logic battery output, so the regulator is working. I double checked (...) (26 years ago, 14-Dec-98, to lugnet.robotics.handyboard)
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| | a/d range and instrumentation
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Hi! Could someone please tell me what is the Handyboard a/d range (60 mV?) and how about it's accuracy? Is someone interested to use or has used the HandyBoard in instrumentation? I plan to make a temperature indicator / pid / fuzzy controller with (...) (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | Re: HandyBoard Build it yourself
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Hi folks! Here is my current shop list, as soon as I have my Handyboard here I'll try to make a complete shop list. 1) First option: buy the unassembled kit from Pattrick Hui's Robot Store in Hong Kong. Order by mail huip@hkstar.com. The standard (...) (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | some kind of dividing circuit?!?!?!?!
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hi, I am thinking of using motors with encoders built in them on my rugwarrior board, but the problem is that the motor returns 500 clicks per revolution. and since the counter can only hold about 32,000 the variable fills up and overflows very (...) (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Position Control Question ?
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Thanks for your reply. To answer your question about position control, let me describe my application. I have an Handyboard, stepper motor, and a linear system (ball-screw), and I would like to control the position of the part mounted on the nut of (...) (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | Miniboard in space.
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Hi, I realize that this is actually not a miniboard list, but since the miniboard is actually the handyboards little brother, I figured maybe this would be of interest. About a year ago I was asked to help a local high school integrate their (...) (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | Please help! HD jammed !!!
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Hi FThompson, Fred and other, I encountered some problem in the downloading. I was successfully able to download the p_code into the HD. However, When the instruction proned me to reset the board, it always appears on the LCD without any lettering (...) (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | IC question
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Dear All, I have a question on the operation of the Handy Board motor outputs which i do not understand. As deduced from the schematic diagram, I believe that the HC374 chip clock input is connected to a Y6 terminal. This Y6 terminal is one of the (...) (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | Position Control Question ?
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Hi Everybody I am new in this mailing list. Has anyone successfully implemented a position control using the handyboard with either a stepper motor or dc servo motor. Baraki (26 years ago, 13-Dec-98, to lugnet.robotics.handyboard)
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| | LCD configs (was:Suppliers and rf link)
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(...) I just wanted to voice a warning of sorts. I ordered the 2 X 16 LCD from them and the pinout is slightly different. Instead of a single line of 14 pins: x x x x x x x x x x x x x x They come with a dual inline 2x7 pin configuration: x x x x x (...) (26 years ago, 12-Dec-98, to lugnet.robotics.handyboard)
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| | Thanks
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I'd like to thank everybody who sent me all this valuable information about suppliers and rf link. I think now I can make my handyboard with less then US$ 60.00 without the batteries and motor drivers (I want to use it in data acquisition). As I (...) (26 years ago, 12-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Suppliers and rf link
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Cesar, Nuts & Volts magazine caries lots of adds for just the sort of thing you need (www.nutsvolts.com). I wanted to mention here the 2 X 16 and 2 X 20 LCD displays which are on sale for $8.00 each at www.flat-panel.com. Hope this helps Pherd (26 years ago, 12-Dec-98, to lugnet.robotics.handyboard)
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| | config download problems
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Hi I am building a handyboard from scratch after finding it on the net. I actually purchased two pcb's from Douglas Electronics. An aside, they were great to deal with answering all my questions promptly and efficiently. I built the first hb and had (...) (26 years ago, 12-Dec-98, to lugnet.robotics.handyboard)
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| | Source of 68HC11 in UK?
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Does anyone know of a supplier for the 68HC11 in the UK? Also any handyboard suppliers in UK. Peter (26 years ago, 12-Dec-98, to lugnet.robotics.handyboard)
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| | Is my serial interface shot?
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I get the message "Board disconnected or not responding" when I try to run ic. (The board was working fine before).So I tried to re load the pcode, but I have run into a slight problem: With the serial interface disconnected, I hold down the stop (...) (26 years ago, 11-Dec-98, to lugnet.robotics.handyboard)
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| | Re: How to get digital outputs from the handyboard???...???
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(...) First, to enable the four SPI pins D2 through D5 as digital outputs, make sure you do a bit_set( 0x1009, 0x3C ). (In the sonar.c program, for example, bit_set( 0x1009, 0x30 ) seems to only enable two of the pins--not all four). I think poke (...) (26 years ago, 11-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Suppliers and rf link
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Yeah, BGMicro is good, they seem to have a neverending supply of used 68HC11A1FN chips for $6.95. If you want new, try: Future/Active voice 1-800-655-0006 fax 1-800-645-2953 (no internet address) 41 Main St. Bolton, MA 01740 USA They list the chips (...) (26 years ago, 11-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Suppliers and rf link
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www.bgmicro.com Nice people, good service (they sent me spec sheets once without me ordering!) HC11's for about $6.95 or so, and they have almost every part you'll need for a HB, miniboard or Rug Warrior board. (MAX233 chips, 32k RAM, crystals, (...) (26 years ago, 11-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Suppliers and rf link
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(...) As someone mentioned earlier (and I can attest to the accuracy) www.bgmicro.com sells the 68HC11 for something like $6 to $8. I bought two and they arrived in only a few days. john calhoun- (26 years ago, 11-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Suppliers and rf link
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I bought most of the parts from the following: www.mouser.com www.digikey.com www.jameco.com The 68HC11 will be the most dificult to find. (26 years ago, 11-Dec-98, to lugnet.robotics.handyboard)
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| | Stepper vs DC
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after reading your mails, it seems to me that the dc motor is better than the stepper motor. doesn't the stepper motor offer any advantages over the dc motor? is the stepper motor that bad? edmund. (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Servos for the miniboard
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Jonathan, I would probably go with a futaba servo. I dunno how much torque you need, but for a small(up to .30 cubic inch displacement, maybe even .60) engine, the s148 does the job quite nicely. Tower hobbies sells them for $14, and they can be (...) (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | Suppliers and rf link
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Hi friends! I need some help from you, it's being very difficult to obtain the parts to make my Handy Board here in Brazil. I'm buying one from Hong Kong, but I'd like to buy some extra 68hc11s and lcds, between other things. I have relatives in the (...) (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Re. RF data link
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In response to rf link, How about standard wireless modems? I know of a few which are made specifically for this purpose and baud rates are between 300-9600 baud ,you set the rate according to your robots capabilities. If you are interested conact (...) (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | Fwd: Re. RF data link
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-- MIME ATTACHMENTS DISCARDED: 1. Content-ID: <0_913320756@inet_ou...aol.com.2> Content-type: message/rfc822 Content-transfer-encoding: 7bit Content-disposition: inline Content-Length: 1259 (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | How to get digital outputs from the handyboard???...???
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hi everyone, i have been trying for the past few days to get digital outputs from the board but with no success. i have been trying to get digitals outputs from the SPI's pins (J6). i have poke to make the port as output port. but the problem now is (...) (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | Servos for the miniboard
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I would like to use a servo to operate the throttle of a small gas engine. I am planning on using the miniboard to control the servo. Are there any brands to avoid? Are there any brands that are far better than the rest? Will just about any RC servo (...) (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | How to get digital outputs from the handyboard???...???
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hi everyone, i have been trying for the past few days to get digital outputs from the board but with no success. i have been trying to get digitals outputs from the SPI's pins (J6). i have poke to make the port as output port. but the problem now is (...) (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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| | How to get digital outputs from the handyboard???...???
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hi everyone, i have been trying for the past few days to get digital outputs from the board but with no success. i have been trying to get digitals outputs from the SPI's pins (J6). i have poke to make the port as output port. but the problem now is (...) (26 years ago, 10-Dec-98, to lugnet.robotics.handyboard)
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