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 Robotics / Handy Board / *7379 (-10)
  Problem on loadind Expansion board files
 
hi all, I had post a message about the exp board days before. Actually, the problem had not been solved yet. I post the following message that was shown when I was trying to load the exp files to the board. I don't know why this happen, since my (...) (25 years ago, 27-Feb-00, to lugnet.robotics.handyboard)
 
  Re: Solar charging and OWI Arm
 
Oops. I just realized I forgot to tell you how to connect the solar panel. Solar panels are almost always installed with a diode to block reverse voltage that would actually suck energy out of your battery when the sun goes down. For a small solar (...) (25 years ago, 27-Feb-00, to lugnet.robotics.handyboard)
 
  Re: Solar charging and OWI Arm
 
Any 12 V solar panel would help to add some juice to the battery, but the board probably can't live on just 40mA. The recommended adapter is 500 mA, which would charge the battery about a dozen times faster. Still, I have some solar cells just (...) (25 years ago, 27-Feb-00, to lugnet.robotics.handyboard)
 
  Solar charging and OWI Arm
 
Hi, Has someone builded a battery charger for the HB, using a solar panel, is a 12 v / 40 mA panel enough for that?, and how to connect it?. Also, has someone tried the OWI robotic arm ? Thank You Jose Luis (25 years ago, 26-Feb-00, to lugnet.robotics.handyboard)
 
  Re: HandyBoard A/D converter?
 
This calls for a signal conditioning amplifier. Since you're not worried particularly about slew rate (the handyboard won't do much more than 12khz sample rate) you can pretty much use any op-amp you want. Ideally you'd use a single supply one, set (...) (25 years ago, 26-Feb-00, to lugnet.robotics.handyboard)
 
  Re: HandyBoard A/D converter?
 
The 68HC11 has references for the range of the A/D converter. In the HB design they are hardwired to 0 and +5. I believe the pin is Vrh at (URL) and is currently wired to +5. --chris prosser From the motorola manual: 2.2.7 A/D Reference and Port E (...) (25 years ago, 26-Feb-00, to lugnet.robotics.handyboard)
 
  Re: colour sensor caliberation
 
May I suggest you test your system for response to invisible light? You could shine an Infrared LED onto it to see what you read. There are also "UV Cutoff" Filters available at photography shops supplying color darkroom equipment (UV from the bulb (...) (25 years ago, 26-Feb-00, to lugnet.robotics.handyboard)
 
  Re: KIPR Kit
 
Hi, In the kit you will find a number of pulleys about 1 inch in diameter. These are narrow enough to fit through the sensor. They have six holes in them and if they are on an axle, will give you 12 pulses per revolution - 2 pulses per hole. One (...) (25 years ago, 26-Feb-00, to lugnet.robotics.handyboard)
 
  HandyBoard A/D converter?
 
Dear Handy Board Masters, I am trying to use the handy board for some A/D conversions. The converter is set up on a 5 volt scale, the converter is an eight bit converter. Over this range I get a resolution of 19.5mV per Step. My application is (...) (25 years ago, 26-Feb-00, to lugnet.robotics.handyboard)
 
  LUGNET spammed (was: Semiconductor Specific Search Engine)
 
Hey, folks, (and Todd Lehman in particular) Did you catch this spam over in lugnet.robotic.handyboard? I hope that this trend doesn't continue. :^( LUGNET is one of the few Internet institutions I use that is nearly 100% content, and spam-free. (...) (25 years ago, 26-Feb-00, to lugnet.robotics.handyboard, lugnet.general)


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