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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 (...) (26 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 (...) (26 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. (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (26 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 (...) (26 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. (...) (26 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. (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (26 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 (26 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 (...) (26 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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