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Hi all, I was wondering if anyone could recommend an IR transmitter for use with the Handy Board's IR output (J7). If possible indicate manufacturer/part no. or supplier/catalog no. if possible. I was also wondering if anyone could tell me how (or (...) (27 years ago, 17-Aug-97, to lugnet.robotics.handyboard)
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| | Re: positioning of robot
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First, my appologies that this posting is off the mailing list's intended topic (the HandyBoard) but as it seems to be drawing a lot of interest I am hoping that continuing it is ok with everyone?) (...) Ok- first a disclaimer - I am not an (...) (27 years ago, 16-Aug-97, to lugnet.robotics.handyboard)
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| | Re: positioning of robot
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I had some questions regarding John Whitten's recent posting about different drive types. (...) How is the math to figure out the narrowest space a vehicle can turn around in done? (What formula -- or formulas -- are used? Don't just give names, (...) (27 years ago, 16-Aug-97, to lugnet.robotics.handyboard)
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| | thanks
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As I just hooked up my Vector 2x compass to my handyboard and it worked the first time, just like my sonar did, I just want to say, thank you all very much for all of the help everyone gives. Thanks -Jim (URL) (27 years ago, 15-Aug-97, to lugnet.robotics.handyboard)
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| | Re: positioning of robot
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I missed the first posting, I liked the summary posted by John Whitten. Youcan take his posting one layer "up" to get at the abstractions if you want. These are: 1. Points of contact with the surface - More increases stability. 2. Drive Train (...) (27 years ago, 15-Aug-97, to lugnet.robotics.handyboard)
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| | Re: positioning of robot
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I think the Tyco ZIG ZAG makes a great platform. It is a treaded vehicle with a center motor/wheel set that moves it sideways. I haven't complete a robot with it yet but you may want to look into it. jm (...) (27 years ago, 15-Aug-97, to lugnet.robotics.handyboard)
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| | Re: positioning of robot
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(...) Howdy- (...) No problem- as long as you get the relevant points across- that's what counts :) (...) Ok- that's a very good basic question. Here are the pluses and minuses for each type of drive system: 2 WHEELS: The two wheel drive system on (...) (27 years ago, 15-Aug-97, to lugnet.robotics.handyboard)
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| | HB sampling rates
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Hello all, Does anyone know the maximum sampling rate possible on the HB for an analog input being polled in Interactive C 3.1? Thanks, Colby (27 years ago, 14-Aug-97, to lugnet.robotics.handyboard)
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| | Re: More juice
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This subject was discussed some time ago. The discussion yeilded the following: When you put two batteries in parrallel on paper, the voltage is exactly the same. In real life, the two bateries will have slightly different voltages and one will (...) (27 years ago, 14-Aug-97, to lugnet.robotics.handyboard)
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| | Re: type conversion
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D> Hello, Does IC do type conversions like C? More specifically, if D> I have a persistent int that needs to become a global float to be D> used by a function, can this code do the conversion? D> persistent int ifactor; D> float factor; D> void (...) (27 years ago, 13-Aug-97, to lugnet.robotics.handyboard)
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| | type conversion
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Hello, Does IC do type conversions like C? More specifically, if I have a persistent int that needs to become a global float to be used by a function, can this code do the conversion? persistent int ifactor; float factor; void foo(void) { ifactor = (...) (27 years ago, 13-Aug-97, to lugnet.robotics.handyboard)
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| | Handyboard for sale...
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Hi all, I'm offering to sell a Handyboard that I built a few months ago. When I was building my board I ordered double of all the components to get over some minimum orders. My plan was to sell the second board to offset some of the cost of the (...) (27 years ago, 13-Aug-97, to lugnet.robotics.handyboard)
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| | HOW TO UNSUBSCRIBE
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greetings all, this is the periodic reminder to please NOT send unsubscribe requests to the list en masse. to unsubscribe, write DIRECTLY to me, Fred Martin, fredm@media.mit.edu. regards, fred (27 years ago, 13-Aug-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Unsubscribe . . . Thanks, Phil! (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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| | READ THIS AND AVOID BLOWING YOUR CHARGER BOARD
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(...) the list archives are linked from the Mailing List page, which is linked from the HB Home Page. (...) Yeah, that's wrong. phone handsets use a physically different plug, so they're not going to be a problem b/c they don't plug in right. The (...) (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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| | Re: your mail
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(...) Yep. You used the wrong phone cord between the HB and the serial interface board. Fred recently answered that question on this group, I'd direct you to the archives of this list but I don't know where that is. The phone cord, I *think*, is (...) (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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| | (no subject)
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It looks like I used a network style RJ11 instead of a telephone style RJ11. Thanks for everyone's help. Colby Leider Dartmouth College (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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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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| | Re: charger board
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It looks like your resistors are burned due to the short circuit between pin3 and pin4 of J10 on the charger board. I guess what you need is to replace those resistors (R11 and R12) and yellow LED, and the charger board will work again. Those (...) (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Hello all, I was charging my HB the other day, and suddenly, the two resistors right by the yellow "charge" LED on the serial interface ckt. went up in smoke. Has this happened to anyone else? Colby (27 years ago, 12-Aug-97, to lugnet.robotics.handyboard)
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