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 | | Re: R: Reading Serial Port
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| also remember that at 9600 baud or higher, you may not see the flashing of the serial LEDs. try setting the baud rate to 300 or even 110 if you're doing visual-flash debugging. fred In your message you said: (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | two servo code
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| (...) Hey Randy, it would be cool if you could modify that code to use TOC3, which is free and available on the expansion bus, rather than disabling the piezo. Maybe somebody else wants to do this. -Fred (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: -POWER-GLITCH-
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| Make sure your downloader is configured to download "pcode_hb.s19" and not any of the other variants (eg pcode_r22.s19). Avard, please send me an email and let me know if this solves your problem. -Fred In your message you said: (...) (28 years ago, 26-Jan-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: handy board analog inputs
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| yes, they do. In case you didn't know, schematic diagrams for the Handy Board are available from the web site. They show this wiring, including the fact that the user knob is wired to PE7. -Fred -- This message was composed using Articulate Systems' (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: 8 bits A/D bus
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| Please read Appendix B of the 6.270 Robot Builders Guide. This explains how to interface latches with the Handy Board. See (URL) Hello, (...) s (...) k (...) e (...) (27 years ago, 14-Jan-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: motor port problem
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| (...) to make the connector more physically and electrically stable. (...) of course, only 2 connections are needed to make a ckt. (...) you should figure up to several amps of current flow. (...) it should work fine. good luck. fred (...) (26 years ago, 21-Nov-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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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: 1.028)
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| | Re: Handboard w/Servo Question
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| (...) the code is contained in the freeware Interactive C distribution, in the libraries directory. It's named servo.c and servo.icb. There may also be a servo.lis file to load both of the other two. -Fred (29 years ago, 14-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Faulty Digitals
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| it might be the processor, but more likely there is a board short connecting the dig ins to ground (input 7) and pwr (input 8). measure resistance between the inputs and the gnd and pwr rails to check. fred (...) (25 years ago, 23-Apr-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: GP2d02 Problems
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| as was mentioned, problems loading ICB files are usually due to bad linefeeds. there is a FAQ entry on this, which explains how to solve it: (URL)Greetings all! (...) (25 years ago, 6-May-99, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | (no subject)
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| did you perchance use a different telephone cable when plugging in your HB? if so, please see the FAQ for an answer. if not, there was some kind of short, either at the rj11 connectors or on the HB. -fred In your message you said: (...) (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: DC adapter
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| Good question. Answer: DO NOT USE REGULATED ADAPTERS WITH THE HANDY BOARD. I will add this to the FAQ, because it is not obvious, but the HB power circuitry was designed explicitly for CHEAPO UNREGULATED WALL WARTS ONLY. sorry, Fred In your message (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: strange IC files?
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| i think it would be good if beta users cc'ed their bugs along the handyboard list--I am interested in hearing how it's working but don't have time to bang on it directly. Perhaps others feel the same way. -Fred (29 years ago, 17-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: 600 mA Limit
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| I just realized that getting 1200 milliamps running two motors bi-directionally is equivalent to running four motors uni-directionally at 2400 from a total power dissipation standpoint. I.e., there are still 600 milliamps running through each (...) (29 years ago, 28-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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fred
(score: 1.028)
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| | Re: HB IR transmit circuitry problem
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| what value are you using for the R4 resistor? There was an incorrect value in some of the Handy Board documentation and it might not be fully expunged. Also, are you using a polypropylene capacitor for C6. -Fred -- This message was composed using (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | using 7.2v battery with HB
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| this actually should be fine. the characteristic of nicads is to have a fairly level output voltage as they discharge, and then drop off sharply when the power's all gone. so it should be no problem. fred (27 years ago, 29-Mar-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: SPI?
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| (...) this is correct... (...) but this is not. the Handy Board communicates with the desktop computer using the SCI: serial communications interface. The SPI is for high speed (up to 1 megabaud) sychronous (i.e., separate clock signal) transfer to (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | HB web servers down
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| hi all, we had a filesystem upgrade last night and both of the Handy Board web servers (el.www.etc and lcs.www.etc) are presently down. Hope to have at least one of them running later today. Fred (26 years ago, 2-Sep-98, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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fred
(score: 1.028)
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