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| Hi everyone, I have been receiving word of people having orders 8 to 10 weeks old with Digital Micro Systems/Prabal Dutta that have not been filled. I would like to assess the situation more generally. If you presently have items back-ordered at (...) (27 years ago, 17-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.076)
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| | Re: 3V motors
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| Also, something to keep in mind regarding the motor drivers is that "lowering the power" doesn't change the drive voltage. I assume (ok, here's a chink in the argument, if this is wrong, I hope Fred or someone will correct me) that the handyboard (...) (27 years ago, 6-Aug-97, to lugnet.robotics.handyboard)
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fred
(score: 0.076)
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fred
(score: 0.076)
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fred
(score: 0.076)
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| | Re: int/float to string routines?%nu
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| [Jeff Keyzer] spake unto the ether: (...) Look at my serial I/O routines (Fred has them on the HB ftp/website with the other user-contributed software), specifically the functions in conio.c and serialio.c. I have both float-to-ASCII and (...) (27 years ago, 2-Aug-97, to lugnet.robotics.handyboard)
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fred
(score: 0.076)
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| | Re: Corrupted or Invalid Pcode?
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| James, Thanks for following up. The reason for this behavior should be fairly evident -- there are traces very close to the mounting screw holes. Your metal washers must have shorted them together, affecting wires to the memory. I do mention to use (...) (27 years ago, 11-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.076)
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| | DLM problem help
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| When I tried to download the S19 code to my mini board by using Fred Martin's dlm, I got the error message "board memory error." The bootstray program was OK to dwonload to the 256 RAM and it can sys the board successfully. However, it could not (...) (27 years ago, 28-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.076)
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| | DLM problem HELP PLEASE
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| When I tried to download the S19 code to my mini board by using Fred Martin's dlm, I got the error message "board memory error." The bootstray program was OK to dwonload to the 256 RAM and it can sys the board successfully. However, it could not (...) (27 years ago, 28-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.076)
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| | Re: Which 68HC11x1xx
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| (...) Fred, Where can one find info on the A1 vs E1 differences you mention. This is not in the 68HC11 reference manual (pink book). Thanks, Clay Timmons ctimmons@asic.sc.ti.com Dallas Personal Robotics Group www.dprg.org (27 years ago, 24-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.075)
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| | Re: voice synthesis
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| Jeff, JDR Microdevices sells the General Insturments CTS256AL2 chip (GI8642CAA) for ** $4.95 **. This is (I think) a slightly newer version of the same chip that Radio Shack used to sell. I bought one of those with an order from JDR, but haven't had (...) (27 years ago, 5-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.075)
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fred
(score: 0.075)
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| | Re: FW: Serial Communications.
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| Hi Fred: The Mini SSC does have a TTL-mode, but it needs inverted data i/o mode. Rather than figuring out how to do that in s/w I just used the MAX232 because it was easy and it made debugging easy into a dumb terminal program on my PC. I've had (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.075)
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| | Re: voice synthesis
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| (...) [snip] RC Systems, Inc. makes a low-cost ASCII to voice board that provides far better performance than the now-discontinued General Instrument speech chip set many are familiar with. The RC Systems product is a small board with a CPU and a (...) (27 years ago, 1-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.075)
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| | Exp Board ETA?
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| I was wondering whether there was an estimated date for the availability of the said expansion board for the HB... there is a design and schematics for a proposed Exp Board on the web site from February and I remember a thread of discussion and (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.075)
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| | Com port trouble with IC
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| I recently bought a Handy Board which works fine, but my version of Interactive C wants to communicate with the board via COM1 only. The port I have available, without completely changing my computer setup, is COM3. How do you get IC to change ports (...) (27 years ago, 20-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.075)
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| | Re: No messages since May 5,1997
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| (...) Dear Alex, If you have not been receiving messages from the Handy Board list then it is likely to be the simple case of your mailer bouncing a message and my removing you from the list, as per the stated policy. I frequently and without (...) (27 years ago, 28-Jun-97, to lugnet.robotics.handyboard)
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fred
(score: 0.075)
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fred
(score: 0.075)
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| | RE: Corrupted or Invalid Pcode?
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| I've discovered the problem. When I mounted the Handyboard, I used metal standoffs. When the board is mounted, it doesn't work. When it isn't, it does. The solution then I guess is to use nylon washers to isolate the Handyboard from the standoffs. (...) (27 years ago, 11-Jul-97, to lugnet.robotics.handyboard)
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fred
(score: 0.074)
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| | Re: NiMH batteries?
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| (...) Well, that is one of the great benefits of NiMH batteries is that they can be charged without ever having to completely cycle them. They are really convienient in Cel phones since you can use a trickle or 'zap' type charge on them no matter (...) (27 years ago, 16-Jun-97, to lugnet.robotics.handyboard)
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fred
(score: 0.074)
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| | Re: stacked L293's
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| It sounds like you have some kind of short in your L293B/D circuit. Do you have any single chips you can try separately? This method of stacking chips does often work, but you might have blown one, and then the two of them are fighting each other. (...) (27 years ago, 14-Jun-97, to lugnet.robotics.handyboard)
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fred
(score: 0.073)
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