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| i am sorry, but i have never readied that software. to debug, use a logic probe and check all of the 28 pins of the RAM chip. address, data, and enable lines should be flashing when the HB is turned on. if you see a line stuck at 0 or 1 that might (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.899)
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| | Re: POWER GLITCH
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| (...) Please see the FAQ, specifically: (URL) I am also looking for a servro motor, any (...) Please see the "Get One" pages, specifically: (URL) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | HOW TO UNSUBSCRIBE
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| Wowsa! It appears to be time for the periodic "how to unsubscribe" reminder. The *only* way to unsubscribe is to send mail to Fred Martin, fredm@media.mit.edu, asking to be removed. All other methods have proven in the past to be futile. Once again, (...) (26 years ago, 2-Feb-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Cannot download pcode on a Mac G3
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| Hello everyone, I've been having a problem downloading pcode to a handyboard or rugwarrior board from my Mac G3 (266 Mhz desktop model). When I try to download the bootstrap code, it reports that the bootstrap failed after 000 bytes, etc.. etc... (...) (26 years ago, 3-May-98, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: IC
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| i am unable to reproduce the problem. perhaps comms between IC and your board are still unreliable. try writing a program that repeatedly prints to the LCD screen the result of 123 * 2. my guess is that it will work perfectly. also, make sure you (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Battery Level Indicator
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| 1. yes, you probably killed your analog 5. the analog inputs are very sensitive to over voltage. if your ran more than +5v directly into the input, you probably killed it. next time you're playing with funky voltages, put a 5K resistor in series (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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fred
(score: 0.898)
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| | Re: Dual Coaxial power jacks?
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| good beginner questions... (...) you can use either. if you use the one on the interface, then power goes through the phone cable to charge the HB. if you use the one on the HB, then power goes through the phone cable to operate the ckts on the (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Analog Ports
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| yes, it's the 47K pullup that's causing the IR's to not work. slice through the trace connecting the 47K to the sensor input pin on the underside of the printed circuit board. fred In your message you said: (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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fred
(score: 0.898)
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fred
(score: 0.898)
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| | Re: Expansion Board Files
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| take the files out of the expansion-libs directory, and put them in the libs directory. over-write any previous files by the same name. make sure IC is configured to load lib_hb.lis on boot. that should be it... not sure where you're getting hung (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Toy motors
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| sorry, send my msg before it was done. right, this is a good answer. you buy a device called an "electronic speed controller". this connects like a servo to the HB and has outputs to drive high current DC motors. you also connect a separate power (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Toy motors
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| right, this is a good answer. you buy a device called an "electronic speed controller". this connects like a servo to the HB (3 wire connection) and has outputs to drive high current DC motors. you also connect a separate power supply to the device. (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Stack Overflow
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| IC is implemented using lex and yacc (tools originally on unix systems for building parsers and compilers, which generate C code that be compiled into apps on many platforms). as someone pointed out, if yacc barfs, it's because you've got an (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Downloading
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| yes, there was a linefeed bug in the expsens.c file in hbexplib.zip. it should be fixed now. please re-download from the expansion board software page and try again. let us know if this fixes the problem. thanks a lot. fred In your message you said: (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Interactive C-OS8 Downloading Problems
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| cappy, did you use my new "6811 Downloader MCL" version? this has been tested on a variety of Macs running system 8.5 and 8.1. please download it from (URL) me know if this works to download from your 6500. have you ever used the serial port on this (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: ROVER
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| are you using 74HC04, and not plain 7404? you must use all HC type chips in the Handy Board. fred In your message you said: (...) (26 years ago, 2-Feb-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: Expansion Board Files
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| argh!@ my last email (which may arrive before this one) is in reply to this. repeating it in the proper context: yes, there was a linefeed bug in the expsens.c file in hbexplib.zip. it should be fixed now. please re-download from the expansion board (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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| | Re: HB Expansion kit
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| (...) yes. this was omitted from the assem instrcts and i've added it now. (...) look at the parts list for things that are referred to as "xx-pin male header". these have a part number; e.g., J3, a 14-pin male header. look for J3 on the PCB (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)
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fred
(score: 0.898)
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