 | | 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 (...) (26 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. (26 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 (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (...) (26 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 (26 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 (...) (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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