 | | Re: Serial LED is not lighting up during charger board assembly
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Hi Scott, as I mentioned before i only assembled some 6.270 boards, but no handyboard. So what's follwing is only what i guess. I can't check this out here. Are you able to measure (always with pin7 J9 as ground reference) +9V at pin2 U16 and -9V at (...) (23 years ago, 26-Aug-01, to lugnet.robotics.handyboard)
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| | Re: Question about necessary tools for HB assembly
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Hi Scott, I assembled three 6.270 boards (kind of grandpa of handyboard) some month ago and didn't need an Oscilloscope or a Logic Probe. I guess you'll only need such things if you run into trouble with getting started with your handyboard. So, try (...) (23 years ago, 26-Aug-01, to lugnet.robotics.handyboard)
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| | Serial LED is not lighting up during charger board assembly
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I'm in the middle of assembling the Serial Interface and Batt. Charger board but have run into a snag. While testing the serial circuit, I was able to see the +-9V values on pin 2 of U16. However, when testing the transmit and receive functions of (...) (23 years ago, 25-Aug-01, to lugnet.robotics.handyboard)
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| | Question about necessary tools for HB assembly
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Howdy all, I'm getting ready to finally begin assembly of my HB and I have a question regarding the "necessary" tools for this. In the assembly guide, the last tool it states as needed is a Logic Probe or Oscilloscope. I've used O-scopes before but (...) (23 years ago, 24-Aug-01, to lugnet.robotics.handyboard)
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| | Re: Help neeeded in S19
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Hi Chee, I used the assembler code of this shaft encoder software to create my own. Although using them in C is quite simple, programming in assembler much toucher - but very nice. Take a look at my website (URL) for the altered shaft encoder code. (...) (23 years ago, 23-Aug-01, to lugnet.robotics.handyboard)
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| | Re: Help neeeded in S19
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Hi To solve your problem you don't need to learn s19 code. You must only something like encoder0_low_threshold= 75; in your program (c and nod s19). You must only replace the 0 (zero) according to your used analog port. For further information refer (...) (23 years ago, 22-Aug-01, to lugnet.robotics.handyboard)
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| | Help neeeded in S19
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hi, I am using handy board to control my robot. In order to implement dead reckoning, I brought a pair of shaft encoders which give 1000 counts per revolution. I have downloaded encoder driver (.icb file)from Handy Board website "(URL) And, I wish (...) (23 years ago, 21-Aug-01, to lugnet.robotics.handyboard)
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| | Re: Is Expansion Board Servo Voltage Suppose to Be 9v
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Make sure you measure the voltage under load. Without a load the diodes won't look like they're dropping anything. Fred (...) (23 years ago, 15-Aug-01, to lugnet.robotics.handyboard)
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| | Re: Is Expansion Board Servo Voltage Suppose to Be 9v
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Yes, Fred, the diodes are in place. I Assume that is where I should start to test for opens, shorts and, bad diodes. Thanks for the help. Andy "Fred G. Martin" <fredm@alum.mit.edu> wrote in message news:200108150241.WA...net.com... (...) (23 years ago, 15-Aug-01, to lugnet.robotics.handyboard)
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| | Re: Is Expansion Board Servo Voltage Suppose to Be 9v
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Do you have the dropping 2n540x diodes in place? they should drop the 9.6v batt to the 5-6v servo voltage. Fred (...) (23 years ago, 15-Aug-01, to lugnet.robotics.handyboard)
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