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 Robotics / Handy Board / *1294 (-10)
  IR Demodulator
 
Hello Everyone, I have had absolutely no luck in getting a IR Demodulator for my HB. I have tried every source given on this sight and even more. Can anyone help me to locate this part? Sharp (IS1U60) Having No Luck! Bill Rose (28 years ago, 21-Jan-97, to lugnet.robotics.handyboard)
 
  Re: mosfet H-bridge
 
I would also be interested in plans for such an H-Bridge. I have two 12Vdc motors than take 3.5 Amps at full load (actually gearhead motors so I get lots of torque @50 RPM) but they have surges us to 12 - 14 Amps at start-up and if they get stalled. (...) (28 years ago, 20-Jan-97, to lugnet.robotics.handyboard)
 
  RE: mosfet H-bridge  [DAT]
 
Sure, I've built several. The only "trick" to MOSFET bridges is that if you use all N-channel FETs you need a charge pump on the upper FETS. (look out for typos, this was done 'off the cuff' so to speak.) Chuck's Simple MOSFET Tutorial ---...--- (...) (28 years ago, 20-Jan-97, to lugnet.robotics.handyboard)
 
  mosfet H-bridge
 
Hello, does anyone know how to build a mosfet hbrige and, if so, could they pass that on to me? It is my understanding that the mosfet hbridge does not heat up near as much as the transistor hbridge nor does it have any loss of voltage or current (...) (28 years ago, 20-Jan-97, to lugnet.robotics.handyboard)
 
  Re: Sensors
 
(...) Voltage. (...) Yes. (28 years ago, 20-Jan-97, to lugnet.robotics.handyboard)
 
  More Sensors
 
What is the smallest difference between voltages that the HB can differentiate between at its analogue inputs.I am very grateful for the information which has already been supplied in reponse to my queries and have found it useful though not (...) (28 years ago, 19-Jan-97, to lugnet.robotics.handyboard)
 
  Re: Robot Soccer Teams
 
Perhaps someone can post it on their HomePage or something so that we all can read it. :) (...) (28 years ago, 19-Jan-97, to lugnet.robotics.handyboard)
 
  Twitchy servos
 
Hi. I also have the problem of twitchy servos, but I am currently only using one of them. The servo is used in steering and it constantly twitches. Although, when I have nothing else hooked up to the board and have only the servo running, no twitch. (...) (28 years ago, 18-Jan-97, to lugnet.robotics.handyboard)
 
  Re: Ranging
 
(...) The Polaroid sensor (50-60 KHz, 1.5-30 feet but maybe more from the air?) is $49 (minumum two) direct from Polaroid. They are in the FAQ or I can look up the ordering stuff if you are interested. There is plenty of documentation for using the (...) (28 years ago, 18-Jan-97, to lugnet.robotics.handyboard)
 
  Robot Soccer Teams
 
I just read in Nuts & Volts about your triumph!! What an impressive feat! Doesn't it get boring having your robots beat the competition 15 to zip? Just kidding.. I can imagine the excitement you all must have felt to see your creation take off seem (...) (28 years ago, 18-Jan-97, to lugnet.robotics.handyboard)


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