 | | serial communication
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Hi, Does anyone know the what is the most suitable port settings to use ? The Bits per second, number of data bits and stop bits, parity bit and the flow control type. Thanks for helping... (28 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | Compling *.ICB files
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Hello, Does anyone have any tips on compling *.ICB files on Windows NT? I have IC 3.2. Using the as11_ic.bat file works with much modifications to the the *.asm files. The web based complier at Newton Labs compiles the code, but loading the ICB file (...) (28 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | arithmatic operation(more)
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Hi all; I have also reckon that following numbers are also giving 2 in answer if divided by same numbers. 5.1,6.1,7.1,4.6,5.6,....4,1.92.3, 2.8,3.3,3.8,8.2,8.7,...10.2,10.7, thanks javaid iqbal (28 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | Arithmatic operation
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Hi all, I am dividing 4.1 by 4.1 in following manner and getting answer 2. instead of 1. Dividing 4.2 by 4.2 give 1 result, dividing 4.6 by 4.6 again give 2. Except 4.1 and 4.6 rest all numbers give 1 result. I am using IC 3.2. Any help in this (...) (28 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | Re: motor port problem
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hi Fred, Why there is 2 holes each for the positive and negative supply on the pin jack (J13)? I thought that just insert one hole each for the positive and negative supply only. I need to know why the J13 is designed for 1x4 holes before i decide (...) (28 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | robots
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I WANT TO BE ON THE LIST. (28 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Sharp IS1U60 availablity
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(...) How about a replacement of the IS1U60, which you can find in JAMECO Part No. 106382 or Part No. 131908 Though a little bit expensive. joema (28 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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| | Sharp IS1U60 availablity
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I'm looking to purchase about 12-15 IS1U60s to use as optical bump sensors and I'm having trouble finding someone that has them in stock and doesn't want $5.50 for them. Sterling Electronics, 781-938-6200, sells the part for around $1.75, with a $25 (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Analog Expansion Header On Handy
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Hi, I knew that the analog expansion header in connected to the PE0 to PE3. How should I call the analog command ? For example, if ( digital (11) ==1 ) ......... or if (analog (3) ==1 ) ......... Hence, how should I use to apply into writing a (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Power Expansion Header On Handy
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hi, I came to know that the power expansion can be used on J13 ( 1x4 pin jack). However, why there is a 2 positive holes and 2 negatives on this header? If i'm using a pair of DC motor 12V each, and i supply a 12v alkaline or NIMH rechargable (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Other batteries... -Reply
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I guess what I'm wondering if the recharge circuit on the Handyboard Serial/charger board will work well with a sealed lead-acid/gel-cell. r than the pleasure of smelling boiling H2SO4 what could happen?? ould be convienent to just use the HB (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Other batteries...
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Just a quick anecdote about Gel-Cells. I have a small and useless robot that simply rolls around on the floor and bumps off things. The motors are powered by a small Gel-Cell. I had run it that day and run the motor batteries flat, so I rigged a (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | RE: PE4
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Rajbala, PE4 is the 3rd pin on the 68HC11. Just by looking at the schematics in the HB manual I would think that it probably does connect to analog input 4. Joe Martin (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Help Y0-Y5
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Sorry for my bad english ! i want to write - i have a big problem, i want to use the ports Y0-Y5 but i don´t know how i use them. Bernd Klein (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Help
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Hallo All , i have a big problem, i want to use the ports Y0-Y5 but i don´t know why. I need a ports for write and read. On Saturday i have my first sumo-robot contest and i need this ports !!!! I´m want to use a Sharp GP2D02 Distance Sensor, for (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Other batteries...
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A gell cell battery is charged via a maximum allowed charging voltage. If the charger doesn't limit the charging voltage to less than 14 volts it will shorten the life of a 12v gell cell considerably. A Ni-Cad uses a constant charging current, but (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Re: motor port problem .
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hi , Attached from the previous mail, I have already solved the problem listed below. It is the 7404 is damaged .What causes it? Any ideas? RIght now this problem that melted my socket on the L293, the supply I used is 12V supply to my 2 DC motors. (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Re: motor port problem .
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hi, I have a big problem. I followed the method of yours that just lift up pin 8 of one L293 and wirewrapped it. The positive supply is wirewrapped to pin 8 . How about the negative supply of the batteries should insert or wirewrapped? I inserted (...) (28 years ago, 19-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Miniboard/download mode
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(...) Check the voltage at the MOBD pin on the chip (not the socket, not the bottom of the board). If it is 5V with the switch in the one position, and ground (0V) in the other position, you may have a defective chip. Otherwise I'd guess open (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Miniboard/download mode
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Hi all, I have a miniboard I built recently that won't go into download mode. In the note called "mb-debug.txt" on ftp://Cherupakha.media.mit from Chuck McManis he describes the exact problem I have. "If the RED LED light ups, or the motor LEDS (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Other batteries...
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Is it ok to use batteries of the sealed lead-acid type (from a UPS). I have V 7.5 Ah and I was wondering if the battery charge circuts would work correctly if I simply replaced the NiCd pack with the lead-acid battery. Are there any considerations (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Re: I overcharged my handyboard.
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|
(...) What is the battery voltage? Does it work with a different battery or DC adapter? --Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ ' ` ~~~...~~~ ` ~~~...~~~ Wendy Parson, Virtue is insufficient temptation. Will Bain, & Tatoosh (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Watchdog and Handyborad.
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Anyone konw if is possible to implement a watchdog in the Handyboard? I try but the program hangs when i try to display something in the LCD. Thanks in advance. Germán Gentile (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | RE: low-cost robot platform
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The platform in question was based on the 'Hercules' r/c car that is available at some of the FAO Schwarz stores. This platform appears to be identical to what was used by the USC entry in the 1997 Robo Cup competition. Clem (ctaylor@SRTC.COM) has (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | low-cost robot platform
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A couple of weeks ago, someone wrote and said that Todd Graham had told them where to get a "cool, low cost" robot platform. I was wondering what, where, and how much was that platform? Information would be appreciated. thanks james jones James C. (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Serial Communication %!*#!!--Please Help
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Hi Peter, There was recently a discussion on the list where it was revealed that the network style cable does NOT work to connect to HB's together. If you go back to the FAQ there will now be correct instructions for making a cable to link two HBs. (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | finding handyboard parts
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Hi all This is a list i compiled when building my handyboard. I found some parts Quite hard to find and spent a lot of time reading through catalogs etc. So i thought it might save someone a lot of time. The list is pretty much complete and i now (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Re: 32V DC Motor
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While on the subject of motors and H-bridges. I recently ordered a L298 based motor controller kit from JCM Electronics. Unlike the L293, the L298 supports breaking and has two bits for direction and one enable bit. It would be easy to add use an (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | 32V DC Motor
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hi i'm trying to use the handy-board to drive a 32V DC motor. a webpage at the handyboard website showed that this can be done by cutting the original power trace and simply plugging in a new external power source(a 36V battery pack?). what i would (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Serial Communication %!*#!!--Please Help
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I need for two HBs to communicate via the serial port. I'm using the "network" style cable. With Randy Seargent's serialio routines and the code that is in the HB FAQ. Please Help my project is due the Monday after Thanksgiving. Any input would be (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | HB not responding
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Hi, I have successfully downloaded the pcode_hb.s19, but my computer can't synchronized with my Handy board. It always return the message "Handy board not responding". What should i do now ??? I'm using Windows 95 on a 233Mhz machine, and i have try (...) (28 years ago, 18-Nov-98, to lugnet.robotics.handyboard)
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| | Availability of Expansion board?
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What is the status of the Handyboard expansion board? The latest page update from Fred appears to be Jul 20th, and indicated that the board might be available at the end of the summer. Todd (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | PE4
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Hi : It is given in the standard ir_detect() routine that the detector should be connected to PE4? Can anyone tell me what is PE4 ? Is it the same as analog input 4 ? Thanks . Rajbala (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | RE: 32V DC Motor
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Greetings, We are using a LMD18200-based H-bridge circuit from Wirz Electronics to drive our motors. We simply removed a L293 chip from its socket and ran the signals (a short distance) to the LMD18200 circuit. Marco A. A. de Oliveira (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | RE: 32V DC Motor
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Just a quick note.. As i remember if you stack the SN??? chips to get the current rating you also have to piggyback a L293D as these incorporate the anti-spike protection diodes as the others don't Russ..... -----Original Message----- From: MAR (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | LEGO: looking for gears
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Is there an inexpensive way to get a large assortment of many LEGO gears? Third parties? -Doug Blank (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | Re: 32V DC Motor
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There's an alternative to th4e L293D chip that fits the Handy Board. This chip can supply 1A. I know you need 2+ Amps but a common method adopted by some people is piggybacking two or more chips. (You put one on top of another to allow the curent to (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Please use subject headers on all mail
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(...) Thanks Liddy PLEASE !!! Use subject headers on your e-mail. Beam; Handyboard; PIC; MICROE; MicroMouse; Motors; LEGO; and etc. Any letter case is better than no classification of the subject. Thanks Ed Spike 73,33 -- (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | Re: 32V DC Motor
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Edmund, I recently received 2 LMD18200 chips from National Semiconductor through their free samples order (limit 2/day, 5/week). These chips deliver up to 3A continous output, and up to 6A peak. They are ideal for driving DC/ Stepper motors. All the (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | Re: motor port problem .
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Philip I would first suspect that the motor chip has blown. This is eash to check since the Handy board has two L293 chips. Swap them (disconnect your motor connections) and run testmotors(). If the problem follows the chips, replace the bad one. (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | Re: I overcharged my handyboard.
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Madhu: I would be very surprised that you overcharged the batteries to the point of no function. Your batteries would have to have gotten very hot for that time (batteries deteriorate in a charger due to evaporation of electrolite water). Generaly (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | Re: motor port problem
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you may have blown one of your L293D chips. try swapping the two chips to see if the problem then migrates to motor 1. if it does, then you have blown an L293D. there is more info on debugging motor problems in the FAQ. See the answer to "One of the (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | RE: Which M68HC11 to use
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I am using the E1FN version myself without any problems (after getting through some problems during implementation). I believe that the F describes the type of package used (square version as needed on the 'standard' board). Ronald (...) (28 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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| | Which M68HC11 to use
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I am planning to build a HandyBoard, and am in the "Gathering Stage". I just recieved the docs from Motorola; the "HC11 Reference Manual", and the "MC68HC11A8 Programming Reference Guide". The Parts list for the HandyBoard calls out for the (...) (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | I overcharged my handyboard.
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I think I overcharged my handyboard, I chargedf it for two days. I charged my handyboard using the Normal charge method. My handyboard is not responding at all. There is no power bulb glowing. Do you have any solution. I had to complete my project. (...) (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | Please use subject headers on all mail
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thanks (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Request for Books on Robotics
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Mobile Robots: From Inspiration to Implementation by Joseph L. Jones, Anita M. Flynn; As its title suggests, this book convers everything you need to know to build a mobile robot. They discuss the design of their brain (a MC68HC11 design that looks (...) (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | correct procedure when downloading pcode_hb.s19
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hi I am at present building a handyboard from Fred's assembly manual, however it appears I might have a problem. I have connected the serial interface board to the handyboard. The hb is placed into bootstrap mode by holding down the stop button. The (...) (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | motor port problem
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hi, i really need help urgently. Currently, I running my robot using 2 DC motor on port 2 & 3. I used external power supply to the L293D (pin 8). I did not cut the trace. I used Alkaline battery 12V recharagable . when I run my robot, it is running (...) (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | (no subject)
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Hi! all, I charged my handyboard for two days. Any problem iam going to get. Please respond me quickly as i had to do my project. thank u. Madhu (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | Broken Board (SPI??)
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Hi, I'm using the Polaroid 6500 ranging board with the sonar routines on the HB web site. When I call the sonar on one HB it returns -1 but when I try it on another HB it works fine. So it isn't the sensor. Could anyone tell me which conections on (...) (28 years ago, 16-Nov-98, to lugnet.robotics.handyboard)
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| | Request for Books on Robotics
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Could people please recomend some books about lego robots, using the handyboard or other controllers, or more general textbooks on the topic of educational robots? Thank you, Rachel Arens (28 years ago, 14-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Monitoring household power consumption
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Hi all, I found an interesting article by Don Lancaster in May 1998 issue of the magazine, Electronics Now. Maxim makes a chip (MAX125) that will convert accurately four channels of analog data to 13 bits accuracy, plus talk about a device for $79 (...) (28 years ago, 14-Nov-98, to lugnet.robotics.handyboard)
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| | Re: NiCd Charger
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Russ: In a message dated 98-11-13 04:48:38 EST, you write: << ... power rating of resistor = 15Volts * 200mA = 3Watts Series resistor needed = 75 Ohms @ 3 Watts. ---...--- ------- The 75 Ohms bit seems reasonable to me but 3Watts must be way to (...) (28 years ago, 14-Nov-98, to lugnet.robotics.handyboard)
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| | Re:
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Hi everyone, The mistake you make in your calculation is that in your calculation you take the entire 15V for the resistor and this leaves no voltage for charging your NiCad. Do the same thing again and deduct your NiCad voltage from the 15V you (...) (28 years ago, 14-Nov-98, to lugnet.robotics.handyboard)
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| | FT639 and Lynxmotion IRPD
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Has anybody try to interface a FT639 to a Handy Board ? Has anybody try to interface a Lynxmotion IRPD kit to a Handy Board ? (28 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | Re: how to adapt a voltage signal?
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You could use resistors to make a 1/10 voltage divider. If you need high input impeadance, you could build an Op-Amp circuit to divide the voltage by 10. Most ADC chips have a pin that is the reference voltage for the high end of the scale--set this (...) (28 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | how to adapt a voltage signal?
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greetings to all i dont know if it has been asked before, but im trying to use son extra ADCs on my handyboard, trouble is they have a 0 to 5V range (analogue) but im trying to adapt the signals in the ranges of 0 to 50 volts, how do i make them (...) (28 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | Re: your mail
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(...) 3 Watts is correct. Look at the resistor on the HB charger board. It's pretty hefty too. -Scott (28 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | encoder
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hi, I need to know what is really the 'processing time' that used in encoder especially used when a pulse is actually being recorded. I load the file "encoder.lis" into the standard lib file. I'm using a optical encoder which is a slotted wheel. (...) (28 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | (no subject)
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Hi all, Ok now i know how to charge my NiCad batteries i have laying around. Thanks to Brett and Scott for the info. I have been doing my sums to try and work out the series resistor i need to charge a 2Amp NiCad at C/10, but my figures dont seem (...) (28 years ago, 13-Nov-98, to lugnet.robotics.handyboard)
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| | Re: questions
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(...) Thanks for the info and the code. got it. But I need something like an implementation of Proportional-Integral Controller or P-I-Differential Controller (Feedback Control Loops), which we always see on any control books. Thanks in advance. (...) (28 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | Re: questions
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(...) Sure. I wrote the attached program to keep my robot tracking in a straight line (it used to arc across the floor). It's not very elegant code, but it works. Note that some of the constants will need to be tweaked for your particular (...) (28 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Connecting two HandyBoards through their serial ports
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Gads Bill, you are right and my info in the FAQ is dead wrong. I have updated the FAQ with the corrected information. *Thanks a lot* for working this one through. There are few things more annoying than completely wrong documentation (compiler bugs (...) (28 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Connecting two HandyBoards through their serial ports
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|
Hello, everyone: Richard Drushel helped me solve the problem that I was having in getting two HandyBoards to communicate through their serial ports by suggesting that I check to be sure that the wiring on the RJ11 cable I was using corresponded to a (...) (28 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | questions
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???...??? Does anyone have a PID Control code in Handyboard? (I mean using the smooth PWM and shaft encoder routine). Thanks in advance. joema (28 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Monitoring household power consumption
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(...) energy (...) power (...) results (...) true (...) showing the (...) the (...) round (...) Right. If you're trying to do that, good luck!!! If I ABSOLUTELY had to do that, I would try to use the reflectance of the disk. On the black spot I (...) (28 years ago, 12-Nov-98, to lugnet.robotics.handyboard)
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| | RE: Monitoring household power consumption
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I purchased a power meter from Brand electronics. They have a few different models. There is one that is suitable for measuring the costs of one device and there is a larger one that has to be hardwired into your house. Check out (URL) are pretty (...) (28 years ago, 11-Nov-98, to lugnet.robotics.handyboard)
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| | Handy Board PLease!!
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If Anyone is selling ther Handy Board Please Tell me!! I rreeeaaally neeeeed it for some Science Proj..! thank you! (28 years ago, 11-Nov-98, to lugnet.robotics.handyboard)
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| | RE: Monitoring household power consumption
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Actually, that little black band is a relic of earlier days when people (like myself) had jobs that occasionally required them to sit with a stopwatch and count turns. A slide rule was then used to calculate power consumption. Each meter had a (...) (28 years ago, 11-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Monitoring household power consumption
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(...) Good application, although it is a bit of a challenge. (...) Do you want to measure the individual devices, or the whole house? To do the individual devices you would have to have sensors right next to the devices. To monitor each circuit in (...) (28 years ago, 11-Nov-98, to lugnet.robotics.handyboard)
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| | Wrong chip on handy board?
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Hi, I was trying to use the digital inputs for my project. Whether I ground the inputs, or I connect them to high, a read from 0x7fff gives me "76". (My connections are correct, as per your drawing in this mail archive). I finally discovered, that (...) (28 years ago, 11-Nov-98, to lugnet.robotics.handyboard)
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| | Monitoring household power consumption
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In the interest of reducing my reliance on the commercial power grid for my home's electrical power requirements I want to consider switching to more energy efficient devices and to at least partial solar power or other alternative power sources. To (...) (28 years ago, 11-Nov-98, to lugnet.robotics.handyboard)
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| | Handy Board
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Hi.. If you wanna sell your handy board. Please Tell me! I really need it for some Science project Thank You Verry Much. (28 years ago, 11-Nov-98, to lugnet.robotics.handyboard)
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| | RV: The Spi port is fragile?
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Anyone can help me? I have a ASAP proximity reader connected to the SPI port. I find some 68HC11 never detect signaling coming from Asap to the SPI port. Others work excelent. Except at 2 or 3 months begin working that fail definitively. I replace (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Unix sources for dl for E1
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I have been using various boards (6.270, Handyboards and fingerboards) for a long time and on various platforms (Macintosh mainly). I am willing to use my handyboard from linuxPPC on my macintosh, so i recompiled dl, ic and mon. It works fine with (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: Charging Batteries
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The HB wall plug charger MIGHT do the job, sort of... Generally you need a charger that makes about 15V under load to charge a 12V (nominal) battery pack. Do NOT use an auto battery charger unless you have a way to reliably control the CURRENT to (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Charging Batteries
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No. You need to limit the current going through the nicad when you charge it. Typically it's some relatively small fraction the the current the battery can supply. Car battery chargers can supply a LOT of current. Hooking a small nicad to a car (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Serial communication between HandyBoards
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Hello, everyone: One of my students and I have been trying to get two HandyBoards to talk to each other over their serial ports, but we are having trouble. We first wired a 4-wire modular connector the way the FAQ says to. No smoke -- a good sign. (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Great Battery Opportunity!? & External Motor Power Question.
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Hi all, I just got my Tech America catalog in the mail (1-800-877-0072). On the back cover they have this 'portable power' thing which just might be able to be used for a robotics application...for only $30!!! Here's the specs: 8 Amp Hour sealed (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Charging Batteries
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Hi all, Just a quick question on charging different types of batteries. I have got a 6Amp 12Volt Nicad battery out of a security alarm panel, can i charge this using a normal lead acid charger that normally charges car batteries, If not what is the (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: IR output connection
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The GPIU58X is not an IR proximity switch but the hack provides an analogue level relating to the intensity of the received signal. Novasoft also sell the IR receivers (it's where I got mine from and I'm based in the UK). The address of Novasoft is (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: IR output connection
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Hi John, Just read your message about IR ranging. Do you have a site address as I can't seem to find the site using a web search, also what is the usual working range for standard IR collision detection as I have been looking through some catalogs (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: IR output connection
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Using a 'hacked' GPIU58X (see Novasoft website for acrobat file describing changes required) you can get an analogue reading relating to the distance from an object. The transmitting LED has to be modulated at the correct frequency and should be (...) (28 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | IR output connection
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Hi All: With a lot of help from you all , I am finally able to send out a modulated signal from one HB which the other can recognize. :) Now I am trying out obstacle avoidance using the IR. I tried to use the standard ir_detect() function with the (...) (28 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | Machine vision -Reply
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(...) Has anybody had any experience interfacing machine vision systems to a robot controlled by a handyboard? The German company Joker Robotics does something using a QuickCam style camera interfacing an HC11 board robot. I think they use the (...) (28 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | Teaching IC
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Does anybody know of a emulater for IC that can be used to teach IC without having the board connected? ___...___ Ian Roberts Mechanical & Manufacturing Engineering Swinburne University of Technology Hawthorn, Vic 3122, Australia. phone (61)(3) (...) (28 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | Machine vision
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Has anybody had any experience interfacing machine vision systems to a robot controlled by a handyboard? (...) (28 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | The Spi port is fragile?
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I have a ASAP proximity reader connected to the SPI port. I find some 68HC11 never detect signaling coming from Asap to the SPI port. Others work excelent. Except at 2 or 3 months begin working that fail definitively. I replace the 6811 but nothing (...) (28 years ago, 8-Nov-98, to lugnet.robotics.handyboard)
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| | Lasers
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Hi: Has anyone ever worked with laser beams and making handyboards recognise them? I think the wavelength is around 600 nm but I haven't been able to come up with a sensor which could recogonise the laser signal alone and no other signal. Rajbala (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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(...) This idea sounds very interesting, but I see 2 problems... First, a GPS reciever doesn't actually contain a compass, so it cannot correctly point you to another location while you are standing still. To determine what direction its facing, a (...) (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | RE: Some Parts
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Drew, I just got through finding all of the stuff during the last 2 weeks: B.G. Micro has the 68HC11 and the 32K static (great prices, too). Newark has the Dallas Semi voltage monitor and the TI motor drivers ($20 minimum order). One other option (...) (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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Robbie Berg and Capt. Jack Rutledge: I'm a big fan of the Handy Board, but you might want to also consider using a 3Com PalmPilot. The current model, Palm III, has a backlit 160x160 graphics display, a 2MByte memory, and while I haven't used it, (...) (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Some Parts
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Drew, Last year I was involved in getting parts for the Missouri Area Robotics Society. We were making boards as a club project. I found most of the parts from Digi-key and Mouser Electronics. The rest came from: Wirz Electronics, JDR Micro devices, (...) (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: To step or not to step
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Russell , Having that encoder will help you a lot. One of the biggest problems with using steppers is that they will stall when you get to higher speeds. What ever program you use to drive the steppers should have a part that asks "has it made the (...) (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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Although not sure, I think that a wearable could perform better then a palm pilot for the firefighting task. Here are some pointers: [Georgia Tech] (URL) Lab] (4 URLs) [UoToronto] (URL) it helps, Ozan (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Follow-up on DS1233 problem
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Hello, all: Just following-up on yesterday's message about the HB resetting during the initial download. Removing the DS1233 and replacing it with a reset switch produces a working configuration. There was also one stuck digital input, but swapping (...) (28 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: nicad battery
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It might take a bit longer to charge but I don't see a problem I actually use a 12V 3AH gell cell to power my robot and Handy Board -----Original Message----- From: Pat Benoy <benoy@SLU.EDU> To: handyboard@media.mit.edu <handyboard@media.mit.edu> (...) (28 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: To step or not to step
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I encountered the same problem with the DC motors I use on my robot. I used a reflective type encoder that read a black and white stripe of the driving wheels, but did not work reliably due to lack of resoulution and interference from ambient light. (...) (28 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: nicad battery
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(...) I'm sure that would be fine. The important things seem to be the 9.6 volts and the relatively high current capacity that nicads provide. The larger the amp-hour rating, the longer you can go before recharging. -- Will , , __@_/ \_@__ |/ | /__, (...) (28 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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