 | | Re: IR Subsystem confusions.
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In your message you said: (...) main purpose: allowing HB's to transmit IR codes that can be rec'd by other HB's or circuits. example -> let an HB run an IR beacon that can be found by another HB. sub-purpose: run IR transmitters for reflective IR (...) (28 years ago, 28-Mar-97, to lugnet.robotics.handyboard)
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| | Re: IR Subsystem confusions.
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(...) The handyboard consists of an IR transmitter and detector circuits. The purpose of the transmitter (when connected thru the infrared LED) is to produce infrared light waves at particular frequencies. This frequency is controlled by R4 and C6 (...) (28 years ago, 28-Mar-97, to lugnet.robotics.handyboard)
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| | IR Subsystem confusions.
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What was/is the purpose of the IR Subsystem on the Handy board. What is the difference between the Sharp Demodulator and the one you get from Radio Shack. How do you use the onboard IR demodulator as a digital input. Are there different kinds of IR (...) (28 years ago, 27-Mar-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Thanks for the information. By the way, does the LCD output work the same way the parallel port on a P.C. Does? On a P.C., I believe it outputs like this: 1) out the coding for the letter in 1's and 0's in 8 positions (binary) 2) a line (I believe (...) (28 years ago, 27-Mar-97, to lugnet.robotics.handyboard)
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| | Re: SPI port config???
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Hi Adam, I am not certain by poking the register 0x1009 (or DDRD reg) alone could provide the clean work. The function of this register is also depending on SPE bit in the register 0x1028 (or SPCR) according to the manual. I believe you could (...) (28 years ago, 27-Mar-97, to lugnet.robotics.handyboard)
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| | SPI port config???
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Anyone.... This query pertains to the reconfig of the SPI on the HB done with a poke(0x1009, 0x3c) which turns the MISO, MOSI, SCK and SS into digital outputs. My question is: "What is the reverse poke if I wanted to turn the SPI back from digital (...) (28 years ago, 27-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Mini Rebound RC
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(...) Just because the motors are small dosn't mean they don't pull a big load. Both Adam Cox and myself have been working with the bulldozer kit (from the robot store) and have found they really heat up the motor driver chips (TI SN754410NE). We do (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Mini Rebound RC
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check out www.robotstore.com and look under kits. There are gear kits and a bulldozer kit that I used two of for a robot. It is not too fast and it pulls a big load, doesn't pull much current (small motors). You might also try the manufacturers page (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Analog ports....
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I was aware that IR sensors can only give digital (on/off) information. Using analog ports will not give you any extra information. Perhaps the ON voltage level of your circuit is lower that 5V and that each of your sensor circuits differ in such a (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Neglection of U8 on Parts List
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Bill is right, U8 is a '374. Peter, where exactly are you looking that you don't see U8 listed? It's there at (URL) post URLs if you're trying to help me maintain the site. Thanks. -Fred In your message you said: (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Broken DS1233-10?
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Hello! I've started work on my Handy Board again, after a brief wait for the memory to arrive, and as soon as I plugged in the boad, I had a problem. I first noticed when I tried to put the board into bootstrap mode, as detailed at the end of (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Neglection of U8 on Parts List
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I am not sure how significant this is but page 35 of the assembly instructions lists U8 as a 74HC374 and not a 74HC373 chip as the sender indicates. (...) William F. Conroy III conroyw@acm.org Lt Col, USAF (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: HB IR port
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Hi Terry, I believe the transmitter circuit already include the 40Khz carrier. You need to write code to modulate the carrier with the low frequency of your information that you want to transmit too. You can do it with simple on/off at the lower (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Odometers
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"You pass this way but once, do it right" (...) Exactly the problem. So I've kind of rigged my motor code to take care to create more than 7 speeds. For instance, by alternating between to levels of PWM very quickly you can fake more motor speed (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Flame detection (Cool Sensor....)
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(...) Yoni, (everyone else) An interesting site: www.infusionsystems.com These guys produce some interesting sensors. Cheers! (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Odometers
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(...) Tom, The problem most likely is not with the code but with the motor driver software. At the present time, the handy board motor driver routine only allows you to select from 7 power levels to the motor. With only 7 levels to choose from, you (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | Mini Rebound RC
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I have seen alot of talk in the mail archives on converting RC cars (motors) and the jist i get is that they just draw two much current and are to fast. There is a smaller version of the Rebound RC car called the Mini rebound has anyone had any luck (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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| | HB IR port
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Hello everyone, I'm interested in trying, possibly using the 40 Khz IR emitter port on the HB. What is required to activate it? If it is code driven, does it bog down the controller much? Also if it is code driven, does anyone have some sample? Is (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Neglection of U8 on Parts List
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Hi, I noticed that U8 was neglected from the parts list. If anyone was wondering you can get it from Mouser. The part number is 570-CD74HC373E. Attn: Fred you might want to update the parts list. Thank You, Peter Eacmen (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Please repost Sample Sonar Schematic
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I deleted the message about the sample sonar schematic posted today in my mailbox after reading it since I thought it was also posted on the website. I couldn't find it, so can someone please repost it on this mailing list or send me the original (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Odometers
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Tom, What kind of encoders are inside these i.e., Hall Effect Sensors (magnetic), or IR LED emitters/detectors (optoelectronic)? Jose-Alfredo Esguerra WSU Mechanical Engineering Student Autonomous Mobile Robot Project (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Digital Sensors & IR control (repost)
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Hi! I'm new on this list. I'm in the process of making what I hope will be an automonous mobile robot, controlled by the Handy Board. I want to add digital sensors to my program, and I've tried to do so, but the program unloads itself when I try to (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Please repost Sample Sonar Schematic
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It is now linked from the HB Software Resources page. -Fred (URL) I deleted the message about the sample sonar schematic posted today in my (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Digital sensors & IR control
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Hi! I'm new on this list. I'm in the process of making what I hope will be an automonous mobile robot, controlled by the Handy Board. I want to add digital sensors to my program, and I've tried to do so, but the program unloads itself when I try to (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | digital and analog ports...
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Hello all, I've run into a small problem with some of my digital and analog ports. When I check their current values (analog(??) and digital(??)), some of the values change, and some don't. I've checked the IR sensors, and switched the good ones (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Analog ports....
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Hello to all, I've run into a small problem with my analog ports. I've got 3 IR transmitter/recievers hooked up to 3 ports, and the "levels" that they are reading is stuck. What I mean is that if I print out to the LCD screen the current values of (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Odometers
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Has anyone used odometers to make their bot drive in a straight line. I am trying to do this and it seems like the delay in reading the encoder values from 1 line to the next causes problems. I have tried taking two results after sleeping for 0.3 (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | COX SERVOS
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I have a 10-14yrold COX micro servo that will rotate freely in both directions when applied straight DC. Does anyone know if these older servos operate differently than PWM. This would be a great solution vs hacking my new servos. (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Adam's schematic / sending large files to the list
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Everyone.... I would like to take this moment to appologize to those who were inconvenienced by my email. It was only after I had sent it that I realized the implications. oops! I will, however, submit the code that I use (it's simple) and some (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Vector2X
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(...) I will try to get a package together tonight that will have to schematics, and the icb file as well as some C demonstration code. I thought I damaged my compass a week ago, but it turns out I broke a wire. I have a schematic, and all the (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Adam's schematic / sending large files to the list
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Hi all, a few reactions to Adam's multi-sonar schematic: * looks like a clever idea and it's an extremely clearly drawn schematic. I put a copy up at (URL) Adam, if you would ZIP up and e-mail me the code you use to drive this, along with any other (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | System time &square waves
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I am still having trouble with the my program and thought that I might ask whether there is any code or does anyone know of a way to identify the frequency of digital square waves with the handy board. Joe Martin joema@mpx.com.au (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Thanks.
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Hello, Thank you to everyone for all the help with the Handy-Board. In particular, thank you Fred Martin and Randy Sargent. Keep up the good work. -Luke (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | Re:Re:System time
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Pandit, It turns out that we where both wrong about your program.It does not work because the time over which d adds 1 to itself is not defined the program does not count at a rate of one unit per millisecond.I have in fact found that it will at (...) (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | Re: your mail
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The LCD pins are just the databus, and some strobes. No power here, just information. And not much possibility for PWM either, since databus timing is constrained by the CPU bus timing. Best to hook something stuctured to the databus, ie the (...) (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | Re: your mail
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What is it that you want to accomplish by doing this? Drive your motors? According to the CPU and Memory diagram, the LCD control lines come directly from the HC11 microprocessor. The voltage is generally about 5 or so, but the lines cannot output (...) (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | (no subject)
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HI! I had an Idea..... What would happen if I were to wire some motors to the LCD output (to screen)? But for me to really do that, I need a couple of things answered: 1) How many volts does it run at? 2)Did anyone ever try this? Advice? Thanks.... (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Vector2X
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I have just recvd and read over the docs of my newly acquired Vector2X compass. I would greatly appreciate any assistance that an experienced user might have to offer. Although it looks as though the wiring overhead is minimal, I would like to (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Runtime Error 3
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Peter, Are you familiar with C in general? I think if you put a static value in the [] of the array declaration and fix the increment of f (f+1) to f++ or f=f+1, then you'll be OK. Try it. ---...--- Adam B. Cox check out my web page Computer (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Re:Re:System time
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Hi Joe, I kind of guess that this result will come up as I mentioned that I do not fully understand the intention of the program. I would suggest that you put sleep(onemilisec); in the time keeping process it self in side the while(1) loop for the (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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