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 Robotics / Handy Board / *3934 (-10)
  Re: motor selection
 
Where is your source and how do the Cirrus compare to Futuba in price? At a local hobby store in Houston I bought 2 Futuba 3003 (I think) that are the replacements for the 148 which I believe are no longer being made. They cost me about $13 but list (...) (26 years ago, 11-Jun-98, to lugnet.robotics.handyboard)
 
  Re: input impedance
 
(...) Hmmmmmm.. as I recall, there are 47k pullups on those inputs. These are used to condition the signals when used as a digital input. The 'HC11 pink book suggests that any input resistance of greater then 10K will "...degrade A/D accuracy." The (...) (26 years ago, 11-Jun-98, to lugnet.robotics.handyboard)
 
  Re: Question about Sharp IR demodulators
 
I had a similar experience, except that all my IR demodulators were from Radio Shack; two were some I'd gotten in a "grab bag" quite a few years ago, and the others were brand new. The original one reacted to 40KHz the way you describe yours doing - (...) (26 years ago, 11-Jun-98, to lugnet.robotics.handyboard)
 
  motor selection
 
Can anyone tell me what is a good servo motor? I haven't had any experience and would like some input on names of servos to choose from. I am looking for a model number and company. Chris Rhodes (26 years ago, 10-Jun-98, to lugnet.robotics.handyboard)
 
  Question about Sharp IR demodulators
 
Hi everyone, First, sorry for the blank message just now -- hit the send button instead of the cancel. I'm working on a project where I've got robots hunting targets equipped with a 40 kHz oscillator circuit which is continuously pulsing an IR LED. (...) (26 years ago, 10-Jun-98, to lugnet.robotics.handyboard)
 
  (no subject)
 
--- Paul E. Rybski --- (URL) (26 years ago, 10-Jun-98, to lugnet.robotics.handyboard)
 
  Extra HB For Sale
 
I have one extra HandyBoard that I will sell if anyone needs one. It is a fully assembled and tested board with Serial Interface Board and cases. It has never been used in a project (about 2 months old). I built two of these and find that I am only (...) (26 years ago, 10-Jun-98, to lugnet.robotics.handyboard)
 
  Re: Windows NT experiences?
 
I use IC 2.8 under NT with no problems. Before you can use IC under NT, you`ll have to turn off the COM-port your HB is connected to under NT, or else NT won't let IC use it. You can delete the COM port in the `ports` part in you configuration (...) (26 years ago, 10-Jun-98, to lugnet.robotics.handyboard)
 
  input impedance
 
Does anyone know the impedance onto the sensor inputs on the HB and/or any suggestions for setting them to receive signals sent at 220K Ohm. Joe Martin joema@mpx.com.au (26 years ago, 10-Jun-98, to lugnet.robotics.handyboard)
 
  Re: Windows NT experiences?
 
I've been using IC3.2 on Windows NT/4.0 with very few problems. I used to have IC lock up occasionally, but only when I disconnected the Handy Board at weird times. Once I was more careful about disconnecting the Handy Board only when IC was at a (...) (26 years ago, 9-Jun-98, to lugnet.robotics.handyboard)


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