 | | Handy board Expansion
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hi, I have gone thru the Handy board expansion schmetic circuit version 3.0 by Mr.Fred Martin whcih updated on the June 14,1998. I have some doubts : 1) What and where is the the Analog pass-through connector (J4) and Motor power pass-through (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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anton, You might want to think about getting rid of all those square roots. Take a look at what you are really trying to do and decide if you need the square root. For example, if you are just compairing two distances to see which is greater, you (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Need Simple IC editor
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Howdy. Thanks to everybody who gave me advice when I wrote about some basic issues. Your responses included links to a C- compiler, a C tutorial, an electronics tutorial, and more! I managed to get my HB up and running and have begun tinkering (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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the other issue that should be mentioned re: changing clock speed is that it messes up the baud rate of the serial communications. if you plan to use interactive C, would have re-assemble the pcode program with a different baud rate constant, to (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | RE: speed of the board
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You shouldn't lose place if the mouse is serviced by input counters and interrupt routines, so whether 2 MHz is fast enough depends on how often you need the positions calculated from the mouse counters. You won't be able to get that as fast as the (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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(...) I haven't used the Polaroid module with my HB, but I have used them a lot with 68332 micro-processors. I does sound like you may have an electrical noise problem (not EMI, but noise conducted through the power bus). The only way I've got the (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | speed of the board
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Hi guys, I am worried about the 2MHz clock speed of the HB. The robot that I am building has a mouse in the bottom of it and I am writing the program to read the number of digital pulses and calculate the position relative to the starting point. (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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You may be trying to draw more current that your external battery can handle. The HB Nicd battery can supply alot of current, both surge abd continuous. This may be why it works in this case. If your external battery is not NiCd, it might cause a (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I had this same problem when I got mine a few weeks ago. I ended up putting a capacitor from pin 1 to pin 3 on U2 of the sonar driver board. I also had to take out the 1k resistor from the BINH. It kept BINH at 1 V instead of Zero and that seamed (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Polaroid trouble again
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Hi! I am having trouble with my Polaroid sonar: When I keep my HB hooked up to external power, I will only get correct readings up to 20 inches. As soon as I use battery power without hooking it up to external power, the readings are correct up to 6 (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I have no experience with the sonar but having followed this mail list for a while ... Is it possible that you are triggering the sonar too frequently? Mike (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | HandyBoard For Sale
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I have an extra one extra controller board that I assembled and tested. Never used in a project. Controller 2x16 line LCD Nicad Batteries RS-232 Interface/ Charger Board RS-232 Cable $225 If interested: Mike Davis ipscone@halcyon.com -- ---...--- (...) (26 years ago, 1-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Digital out puts
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Please see the FAQ, specifically: (URL) the answer. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Digital out puts
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Hi guys, The handy board specification does not tell the number of digital outputs it has. I need at least four digital outputs from the board in order to make my robot function. Is there any way I can do this? Thanks, -anton (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | unsubscribe
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please unsubscribe me. I may be in as les@psi.bc.ca thanks (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: power glitch
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Please see the FAQ: (URL) is a known issue, with a simple fix: make sure to bootstrap with the board with pcode_hb.s19. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Update on the expansion board.
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Hi. The beta testers are still discovering issues, so I'm not ready to release the design just yet. I'm particularly waiting for results of multi-servo testing. But, it appears that the basic design is sound, and only minor rework (if any) will be (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | power glitch
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I have just started useing my handy board and have had to deal with many power glitches. I don't know if this happens often, or if something is wrong. It seems to happen at any time, even when I have only turned the board on and done nothing else. (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: beginner
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"Handyboard for Dummys"... No, just kidding. Maybe not just yet. :) Check the HB HP for the "HB Technical Reference". You can download it. Gleason Electronics sells HB kits and Assembled HB's. They have a starter package. Get IC 3.2 from Newton (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | ir reflectance sensors found !!!
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Howdy, When browsing through the catalog of CONRAD ELECTRONICS (www.conrad.de) I found an IR reflectance sensor with build in logic to measure distances between 10 and 80 cm. I requested the datasheets and they arrived today; I am gonna order (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | HB and the Bloomington HS Solar Bike Team
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Hello All, I posted a little note a while back about our use of the HB on the two bikes that our local high school is using in solar bike races in Topeka and Akita, Japan. Well the races are over and I thought that some of you may be interested in (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Need PWM generator chip
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(...) look for the LM629 on the national semiconductors (URL) offer free samples. However, the one i'm talking about is surface mount. .---...--- . . . | Remi Desrosiers | "My Youth in Arcadia" ICQ# 7228856 | harlock@videotron.ca . (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | beginner
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Hi every body... I need help guys! So far in my life I haven't done any thing like this, but I like to learn. Is there an idiot's guide for a beginner to start programming a handy board? Can some body tell me where to buy a handy board and which (...) (26 years ago, 30-Jul-98, to lugnet.robotics.handyboard)
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| | Need PWM generator chip
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I'm looking for a chip that will generate PWM waveforms. I know they exist, but I don't have information at my fingertips. Thanks for any tips! --greg ***...*** * Greg Starr, Professor * * Department of Mechanical Engineering ph (505) 277-6298 * * (...) (26 years ago, 30-Jul-98, to lugnet.robotics.handyboard)
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| | IC floating point bug
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Has any new information on the IC floating point bug come up? I have been coding neural networks into my robot and was having problems. A simple 'test' network of simple values ran fine, but when I manually entered a real evolved network with many (...) (26 years ago, 29-Jul-98, to lugnet.robotics.handyboard)
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| | Re: recherche de logiciel C Interactif comme prisenti dans le livre
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please see (URL) your message you said: (...) (26 years ago, 29-Jul-98, to lugnet.robotics.handyboard)
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| | recherche de logiciel C Interactif comme prisenti dans le livre
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N'ayant pas accés à un micro équipé d'un lecteur de disquette et ne connaissant rien du protocole FTP, je souhaiterais obtenir de votre part la version Gratuite du C Interactif Mes coordonnées : Claise Jerome 23 avenue marcel pagnol 60870 villers st (...) (26 years ago, 29-Jul-98, to lugnet.robotics.handyboard)
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| | Re: 68hc11F1
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Hello mike, (...) I also wanted a small board with MCU, memory, serial and a bus to the outside world. This way i made a general io board and could connect anything to it. (...) You can buy the hc11F1 in 4 speeds, with a freq up to 16 Mhz, setting (...) (26 years ago, 29-Jul-98, to lugnet.robotics.handyboard)
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| | Re: What types of IBMs does IC Run on?
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i'm pretty sure the DOS version of IC runs on 286's -- it may even run on 8086's that have the 8087 math co-processor. fred In your message you said: (...) (26 years ago, 29-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Digital In and Analog Out Header
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It should read: ooo...ooo Signal ---...--- ___...___ 47K RESISTOR NETWORK ___...___ ooo...ooo +5V ---...--- ___...___ ooo...ooo Ground ---...--- Regards, Patrick --00---...--- Low cost MIT Handyboard supplie (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: AC adaptor
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Hi All, That color code on inductor should read: BROWN(1), BLACK(0), GOLD, SILVER which is (1x10^0)uF => 1uF. Sorry for the confusing and we will mark that in the future. Thanks. Patrick --00---...--- Low cost MIT Handyboard supplier and Official (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: What types of IBMs does IC Run on?
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I would guess this means that IC needs a math co-processor, in other words, a 486 DX or higher. -- Justin Kao <jkao@bigfoot.com> <jkao@flash.net> <ICQ 5903051> (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | interfacing V2X compass
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HB Folks, I'm currently using the HB to interface to a Vector 2X compass. I'm using the compass in RAW slave mode, so it's different than the hardware interface that's documented on the HB web site. But I did notice that the documented interface (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | polaroid ultrasonic detector
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I'm trying to make the polaroid ultrasonic motion detector compatible with the crickets. Does anyone know where I can find a data sheet for these detectors? I unfortunately broke the last one I was using. I think I must have exceeded either the (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: IC Floating Point Bug
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(...) If you notice, the constant is PI/2. If you add more significant digits you can even get "a/b" to become 0.5, that is twice the correct answer rather than half of it!!! The reason the bug concerns me so much is that since "a" and "b" print out (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: AC adaptor
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Please see the FAQ for the answer to the adapter question: (URL) the L1, that substitution may or may not work. try it; if your motors don't work right, it could be that. Fred In your message you said: (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | What types of IBMs does IC Run on?
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Greetings, I have recently gotten the free version of IC working. It was a battle and it seems that the type of host processor makes a difference. Running IC on an old IBM XT (8088) CPU produces the following error whenever a routine using floating (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: IC Floating Point Bug
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(...) <snip> I get the same results with version 3.2. Curiously, if I remove the last digit in the a = 1.570796 statement (or replace it with a zero), then I get the correct answer. I guess it has something to do with specifying too many significant (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | AC adaptor
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I figured out all of my problems were caused by using an ac-dc adaptor with the wrong voltage. What is the correct output voltage for the adaptor that should be used with the handyboard? Also, I cannot find L1, the iron core inductor. I ordered my (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Update
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Sorry, not the handyboard but the expansion board Bill James | work: 972.480.2306 Product Test Specialist | Pager: 972.598.6201 w-james2@ti.com Precision Analog & Interface Department Polymath in Training | Have Spacesuit will Travel (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Update on the expansion board.
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Fred, I was wondering how the beta test of the handy board is going. Is the board a double sided board or a multilayered board? When will you be posting the artwork, I am interested in trying to make one? Thanks and keep up the good work. Bill James (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Various Basic Issues
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(...) Joseph, I am new to the handyboard myself but as a professional software engineer, I can give you some pointers on the software issues. When they say that IC is a subset of C they mean that there are certain ANSI C features that will not be (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: 68hc11F1
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(...) For the H-bridges look for the LMD18200T at (URL) also the LM689 for motion control, using PWM as output and quadrature encoder (4bits?) as input. However I think the command that must be sent are 8 parallel bits :( (...) | Remi Desrosiers | (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: 68hc11F1
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Hello Mike, Sorry for the cryptical message, I don't have a handyboard running at 16 Mhz, i made my own board, currently with a 68hc11F1(@16Mhz), 32 K external RAM, 32k External flash. My programs are run from the flash, leaving aprox 32 k of stack (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Digital In and Analog Out Header
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Hello All, Just a quick question, On the handyboard there is a socket header for the 7 analog inputs, and 9 digital outputs. There is actually three rows of headers for these inputs. I am enquiring as to what are the three headers for? I am (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Various Basic Issues
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<snip!> (...) I believe it is a subset of striaght C. However, I never learned C: I junped straight into C++ before even getting my HB. However, programming was of no dificulty to me, even thought I only knew C++ (...) IC will work on a computer. I (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | FS: Extra HandyBoard for sale
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I have one extra HandyBoard that I will sell if anyone needs one. It is a fully assembled and tested board with Serial Interface/Charger Board and cases. It has never been used in a project (about 2 months old). I built two of these and find that I (...) (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | [Fwd: Various Basic Issues]
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit Content-Disposition: inline Content-Length: 1148 (26 years ago, 28-Jul-98, to lugnet.robotics.handyboard)
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| | IC Floating Point Bug
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I've been making use of floating point for the first time on the HB and am having problems. The following program demonstrates the kinds of bugs I've been encountering: ----(cut here)---...--- int main() { float a; float b; float c; /* This program (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | sonar.c for the handyboard
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Hello, I have a handyboard and 6500 series poloroid ultrasonic ranging system. I have downloaded the sonar.c programs used to drive the transducer for distance measurements. There appears to be a problem, or atleast I think there is, with it. The (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Sumo-Robots
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look at (URL) for th Dutch sumo-robotics Greetz Emiel ---...--- (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | Re: motor power problems
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In a message dated 98-07-24 20:49:35 EDT, you write: << Has anyone had similar problems, and if so how did you solve them? I know there's a way to provide a separate power supply for the motors, but I'd rather not cut traces on the board except as a (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | Various Basic Issues
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Howdy from Texas. I have set myself the goal of making a robot with the handyboard -- just for the learning of it. Until 2 days ago I had zero knowledge of electronics, although I am teaching myself using some kits and books. I also do not know C (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | Re: troubleshooting
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ok, i finished the digital input circuit and the first time i turned it on both green and red lights stayed illuminated so i checked the orientation of all the chips and they were correct so i removed and reinserted them for good measure. This (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | Re: IR Emmiter and Detector for RW Pro
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Hi ! You get a fantastic collection of datasheets and component specs at www.questlink.com regards..... Rajaraman. -----Original Message----- From: Javaid Iqbal <javaid@student.unsw.edu.au> To: Handy Board <handyboard@media.mit.edu> Date: Sunday, (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | ELMO
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Hello all, From December 1997 until now I've been working on my Master's project. It consisted of a theoretical part and a practical part. In the practical part I made a little mobile robot using a Handy Board. In the next couple of weeks I will be (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | 68hc11F1
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Hello all, Thanks for all the replies that you have send. My board is now working, at 16 mhz with flash and ram. Richard (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | RE: fischertechnik
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First of all, the HandyBoard works fine with fischertechnik. I've been using fischertechnik for a variety of purposes since about 1980. I've also used Lego Technic, although less extensively, for ten years or so. Size/Scale: If you build identically (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | Re: troubleshooting
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In your message you said: (...) good.... (...) yes, this is normal -- before you load pcode_hb.s19, the LCD is just as you describe. (...) d (...) I'm not clear the problem. if you enable "ignore feedback", does it then download properly? if so, (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | troubleshooting
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I have a problem assembleing my hanyboard. I am at the stage where i am doing the digital input circuit. Before this I successfully loaded pcode_hb.s19 into the handyboard and the interactive C message appeared. However, before i loaded pcode_hb.s19 (...) (26 years ago, 27-Jul-98, to lugnet.robotics.handyboard)
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| | Re: motor power problems
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in short, the answer is: "you can't use 3 to 4v motors with the Handy Board." basically, these motors are cheap toy motors that are incredibly noisy from an electrical standpoint, plus they want to draw far more current than the Handy Board's motor (...) (26 years ago, 25-Jul-98, to lugnet.robotics.handyboard)
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| | motor power problems
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Hi, everyone. I recently bought a preassembled handyboard from the Robot Store in Hong Kong, and I'm having trouble with motor power. My robot frame has two motors that can run at 3-4.5V. I was planning to use 5AA Nicads as a power supply for the (...) (26 years ago, 25-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Help!
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Fred, I decided not to use the external battery for now and try and get the sonar working using the directions on the web page. Instead of connecting the power throught the Motor Power header, I have simple connect V+ and GND to TIC3's PWR and Grnd (...) (26 years ago, 24-Jul-98, to lugnet.robotics.handyboard)
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| | Re: What about Fischertechnik?
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REF: Fischertechnik as building components for robots Greetings, We considered using Fischertechnik for building our robots but unfortunately, they occupy more or less the same volume as LEGO parts and our robots had to be small (first within a 12 (...) (26 years ago, 23-Jul-98, to lugnet.robotics.handyboard)
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| | Config register 0x3c trauma
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You all may recall my problems downloading to my board and receiving a "config register set to 0x3c" error. I am glad to report there was a very simple solution, but it was a nightmare to debug. So allow me to share my wisdom so other unfortunate (...) (26 years ago, 23-Jul-98, to lugnet.robotics.handyboard)
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| | PID filter source code
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Hello all, Is there anyone hwo has information about motion control, and specially about writing a PID filter for the HC11. I want to control a 3-axis machine. The 3 engines all have encoders and i want to write a PID filter where i can control the (...) (26 years ago, 23-Jul-98, to lugnet.robotics.handyboard)
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| | What about Fischertechnik?
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I assume the Handy Board (HB) can be used with Fischertechnik products and parts. Is this correct? I just ran across Fischertechnik and was wondering if you all have any comments (preferably based on experience) about how this line of products (...) (26 years ago, 22-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Recharging a Battery
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(...) That's a Gel Cell I assume (that's what I call them anyway). Depending on how you use your battery, you can charge it one of two ways (listed on the chart on your battery). I choose to charge my Gel Cells (I have a bunch of different types) (...) (26 years ago, 22-Jul-98, to lugnet.robotics.handyboard)
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| | Recharging a Battery
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I have a 'sealed rechargeable' Lead-Acid battery. It's specs are 12 volts at 2.0 Ah. It also has a nifty chart on the outside saying: | Charging @ 20 Deg. C | Voltage Regulation | Initial Current | | Standby Use | 13.50-13.80V | No Limit | | Cyclic (...) (26 years ago, 22-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Memory usage
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This question how has an answer in the FAQ. Please see: (URL) is the answer now on the FAQ page. Fred How much of the Handy Board's 32K memory is available for user programs running under Interactive C? Here is an approximate breakdown of how (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Memory usage
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I don't have a handy board but am considering getting one. I like what I have seen so far! I have searched the FAQ and the mail list archives but can't find the answer to my question. How much of the 32k does Interactive C take up? OR MORE TO THE (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Need Help to solve the algorithm.
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The paper referred to is at ftp://cherupakha.med...Martin.pdf My personal advise is that you simply *get started*. hook up your motors and start driving your robot around. see what it can do, how it moves. then connect sensors and gain an intuition (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | RE: Need Help to solve the algorithm.
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Are you asking for how to do the ded reckoning from counting steps, or how to get the sonar to measure your location relative to nearby walls? Mike Ross ---...--- From: phillip chia[SMTP:philchia@s...et.com.sg] Sent: Monday, July 20, 1998 3:38 AM (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Help!
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I have tried the official Handy Board Sonar hookup from the Web sie and didn't get very good results. Most of the time, the sonar would produce seemingly random numbers (including negatives). Every once in a while, it would give a constant value of (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Help!
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In your message you said: (...) what kind of ext batt are you using? are the diodes in series with that? what voltage do you have on the sonar when it's in operation? are the sonar's ground and the HB's ground connected? fred (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Need Help to solve the algorithm.
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May I suggest that you get a copy of a paper that Fred Martin wrote (should be on his website, that is where I got it). It talks about the experience of several of his students and their approaches and pitfalls is designing a robot not too (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: LCD routines
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Hello, I have developed a machine code programming system for programming the handyboard. It is similar to the Buffalo routines on the Motorolla 68HC11 chips. It allows a relatively simple way of machine code interaction to the display. The program (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | LCD routines
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I would like to be able to use the LCD screen on the handy board while using just straight assembly programs. Is there anyone that has some example code, or know where I can look for explanations of how to do this. Thanks, Joe Hoffmann E-Mail (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Sonar Help!
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Hi, I am having problems getting my Polaroid sonar to work properly. Following Kent Farnsworth's directions, I have hooked up the sonar: Sonar ====> Handy Board ECHO TIC3 (Top position) V+ TIC3 (Middle) GND TIC3 (Bottom) INIT PIN 9 of 2nd L293DNE (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | re: paralell port
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Somebody request some info about paralllel port look in thisd site for an example writing in C (URL) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Need Help to solve the algorithm.
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Hello, I really need help to solve the alogrithm in using the HD with interactive C program . Presently. I'm constructing a mobile robot to move within a battle field of 5metres by 5metres. In side the battle filed, the "mines" are visible with (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Another HandyBoard for sale
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Hi all, I also have a Handyboard for sale, but with a 20x4 display and the IR demodulator. No casing, however. Price is just slightly more at $235, includes shipping. It has a A0 processor. I'm selling it because it's a bit "overpowered" for my (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Comm problems
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Hi all, I am currently having problems getting my HB to talk with my computer. I am using IC 3.2. Because of time and work pressures I have not been able to play witht my bot for a couple of months. Everything worked fine then. I didn't change (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | (Fwd) Extra HB For Sale
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Oops! I had my date set incorrect, on my PC. This was sent out on July 19th not June 10th. ------- Forwarded Message Follows ------- From: "Mike Davis" <ipscone@halcyon.com> To: handyboard@media.mit.edu Date sent: Wed, 10 Jun 1998 08:41:19 -0700 (...) (26 years ago, 19-Jul-98, to lugnet.robotics.handyboard)
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| | Parellel port control
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Has anybody tried using the "delay function, outportb function and inportb function" that comes with Borland C++ 5.01. I am trying to control a set of LEDs conncted to my printer port using a C++ program. My program woudn't compile. The error is (...) (26 years ago, 19-Jul-98, to lugnet.robotics.handyboard)
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| | RE: SPI problems
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Serial libraries are wwriten for Serial port,not for SPI port! Are you needing use the spi like a standard oitput port or like a SPI (synchronus serial port)???? Is the device spi compatiible? If yes, you need the portd to work like a SPI port. if (...) (26 years ago, 19-Jul-98, to lugnet.robotics.handyboard)
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| | beta testers wanted for LEGO MindStorms
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Hi all, LEGO is officially looking for beta testers for their new MindStorms product scheduled to ship this fall. I'm not sure what their selection criteria are, other than that you must live in the States and have Pentium running Windows 95. It's a (...) (26 years ago, 18-Jul-98, to lugnet.robotics.handyboard)
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| | I'm Sorry!
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Sorry that my last message was sent in HTML format. Hopefully, it will not happen again Phil Hahn (26 years ago, 18-Jul-98, to lugnet.robotics.handyboard)
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| | Re: LM20X21A
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(...) Erm... I am just guessing here, but, I don't think it would be unreasonable to suspect that this particular LCD uses the Hitachi LCD chipset that just about every LCD manufacturer utilizes.. and every LCD chip fab'r emulates. HM44780 is it? (...) (26 years ago, 18-Jul-98, to lugnet.robotics.handyboard)
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| | HB Stress Ability
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Hello! Does anyone know how much stress can be put on a HB?? I'm into rocketry and thought about putting it in my rocket that I'm building. I was wondering: Will it work while flying in the air with the increaced G-force and high speeds? Thanks! (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Handy Board Keeps crashing
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I keep getting errors that there is extra bytes on the stack. I reset the board a couple of times and that does not help. I appreciate any help. Faris (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Config register 0x3c
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As no one has any insight into why I'm getting a config register value of 0x3c when downloading pcode, I am into speculation mode. To refresh people's memory: All of DL, DLM, and HBDL refuse to download the pcode to my chip, and HBDL reports that my (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Simultaneous Control of Multiple Servos
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That's the way I thought it had to be done. What I was considering was routines that moved each leg the same short distance (for straight line walking). Walking would consist of very short increments of movement. Now, this seems like it would move (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Gleason Reserch
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Do you know what is going on with Gleason Research ??. Thay are not responding the e-mail !! Ricardo Barrenechea rbarre@cis.com.ar (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | RE: Simultaneous Control of Multiple Servos
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I have included site addresses that I have found useful. (URL) Maker of the Hexapod robot using a buffer of sorts (D-type latches) for simultaneous control. Definitely worth a look, he's put a lot of information into this site. (URL) Creator of (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Simultaneous Control of Multiple Servos
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I would suggest that just getting a walking robot to walk with coodination and then being able to turn in place and in an arc will be challenging enough to begin with. Just adding enough intelligence to adapt to rough terrain and the change gaits (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Simultaneous Control of Multiple Servos
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You are correct to assume that all legs should be in sync with each other and that all the legs on the ground should be moving at the same rate in the same direction to move straight (sometimes you don't want to move straight!). BUT now think of the (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Simultaneous Control of Multiple Servos
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I have asked this before and not received much regarding this question. So, here goes again. In building a walking robot, how important is it to control the motion of all legs simultaneously? Seems like that pulsing one at a time creates the (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | SPI problems
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I am trying to connect my Handyboard with a Motorola 68HC11A1FN chip inside with a AD7858L- 12-bit ADC. In my IC code I first write to the DDRD (Port D Data Direction Register) ($1009) and activate SCK(bit4), MOSI(bit3), MISO(bit2). Then I write to (...) (26 years ago, 16-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Handyboard/RWP without p-code
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Hi I suggest that you contact ImageCraft. (URL) or info@imagecraft.com They have a C compiler for 68HC11 CPU's that will do what you want, including a library for the HandyBoard (see attached e-mail) ! I have no affiliation with ImageCraft (other (...) (26 years ago, 16-Jul-98, to lugnet.robotics.handyboard)
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