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 | | Re: Sonar questions (technical ones!)
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| Good questions!! (...) The polaroid number/widely quoted number is 0.9 MILLISECONDS PER FOOT -- or 1.11 ft/ms. hence the conversion matches! I think also I have this wrong on my HB sonar page! This confused me for a while too. (...) Yes, this is (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.098)
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| | Re: Wall Following
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| (...) Correction: the problem has been the *bane* of your life--not the bain. I'm the bain of everyone's life. (...) The best solution to the problem that I've seen is in the 6.270 Robot Builder's Guide, which can be downloaded off of the documents (...) (27 years ago, 25-Mar-98, to lugnet.robotics.handyboard)
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fred
(score: 0.098)
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| | Re: RJ11 cable
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| please see the FAQ on this, look for the entry on "help my interface board is smoking and R11 is turning black!" (that's what happens if you get it wrong) fred (...) (27 years ago, 22-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.098)
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| | Re: downloaded
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| (...) Laurent -- just to be clear -- your problem is that you can't bootstrap your board from a G3 Mac, but after you do get it booted, everything's OK? Fred (27 years ago, 20-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.098)
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| | (no subject)
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| assuming the battery is not yet connected (which would be the case of you're building the HB and following the directions), the charge LED means that the HB is drawing some current. fred In your message you said: (...) (27 years ago, 17-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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fred
(score: 0.097)
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| | Re: Expanding the memory of the handyboard
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| Dear Kevin, Please forgive this non-answering of your question, but I am curious as to what kinds of hardware projects/software objectives were your students working on when they ran out of 'hc11 memory, and how did they deal with this circumstance? (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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| | Re: pa7 9600 serial output
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| (...) You have to re-write the bit_delay loop to take up four times as much time. Just multiply the delay count value by four, e.g., "LDAB #148". Fred (following is the 9600 code.) * take up 0.1042 millisecs * 208 cycles bit_delay LDAB #37 bit_loop (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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| | downloader for SGI
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| Hi Fred, I like to connect my handy board to an O2 platform. Could you please tell me where I can find downloader for unix system? many thanks, nari (27 years ago, 12-Mar-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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fred
(score: 0.097)
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fred
(score: 0.097)
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| | public apology
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| Yes -- I didn't think very hard and in retrospect it's fairly evident that Jan-Sipke's code is just the starting step. Sorry for being such a blunderhead. (Jan-Sipke and I have been exchanging some private messages and I think he's closing in on a (...) (27 years ago, 14-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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| | Re: 9v lego motors
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| Everyone is complaining about the price of LEGO motors. There is a new product, a gear reduction motor, that is a great value. It is a super efficient DC motor with a built in gearbox that can be used for direct drive, or with one stage of gear (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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| | Re: Interrupt for serial data
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| Jan-Sipke, You're really pretty far away from having this work. It's not just a matter of redirecting the serial interrupt; when you get there, you have to: * store incoming character in a buffer * advance the buffer pointer * check the buffer for (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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| | Re: Fw: questions on IC
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| re: #1, in a sense, the stuff you downloaded *is* there, but IC doesn't know how to access it until you re-download. So yes, each time you restart IC, you must re-download your project. re: #2. there are not good reporting tools for memory usage. i (...) (27 years ago, 12-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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| | Re: Serial line interrupt
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| you could write an ICB driver that accepts the incoming serial char interrupt and buffers it up. other than that slowing down the PC is probably the best option. fred In your message you said: (...) if (...) ry (...) ng (...) (27 years ago, 11-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.097)
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| | Re: 68hc811
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| I don't remember troubles trying to reset configs on the e2's, but it's possible i never tried to disable the eeprom. have you tried using motorola's pcbug utility? fred In your message you said: (...) (27 years ago, 9-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.096)
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fred
(score: 0.096)
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| | Polaroid sonar connector
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| Does ANYONE out there know how I can get my hands on a couple of the sockets that will accomodate the 9-pin Burndy connector plugs that come with the Polaroid sonar modules? I've searched the web, but haven't been able to find what I'm looking for. (...) (27 years ago, 7-Mar-98, to lugnet.robotics.handyboard)
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fred
(score: 0.096)
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| | Re: encoder function
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| Tom, it seems that your routines measure frequency but Yoni wanted to count transitions. Yoni, the approach is similar to what Tom has done in that you must use the timer input channels to get high frequencies. In the TCTL2 register, set the input (...) (27 years ago, 7-Feb-98, to lugnet.robotics.handyboard)
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fred
(score: 0.096)
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