 | | Handy board Expansion
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hi, I have gone thru the Handy board expansion schmetic circuit version 3.0 by Mr.Fred Martin whcih updated on the June 14,1998. I have some doubts : 1) What and where is the the Analog pass-through connector (J4) and Motor power pass-through (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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anton, You might want to think about getting rid of all those square roots. Take a look at what you are really trying to do and decide if you need the square root. For example, if you are just compairing two distances to see which is greater, you (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Need Simple IC editor
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Howdy. Thanks to everybody who gave me advice when I wrote about some basic issues. Your responses included links to a C- compiler, a C tutorial, an electronics tutorial, and more! I managed to get my HB up and running and have begun tinkering (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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the other issue that should be mentioned re: changing clock speed is that it messes up the baud rate of the serial communications. if you plan to use interactive C, would have re-assemble the pcode program with a different baud rate constant, to (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | RE: speed of the board
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You shouldn't lose place if the mouse is serviced by input counters and interrupt routines, so whether 2 MHz is fast enough depends on how often you need the positions calculated from the mouse counters. You won't be able to get that as fast as the (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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(...) I haven't used the Polaroid module with my HB, but I have used them a lot with 68332 micro-processors. I does sound like you may have an electrical noise problem (not EMI, but noise conducted through the power bus). The only way I've got the (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | speed of the board
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Hi guys, I am worried about the 2MHz clock speed of the HB. The robot that I am building has a mouse in the bottom of it and I am writing the program to read the number of digital pulses and calculate the position relative to the starting point. (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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You may be trying to draw more current that your external battery can handle. The HB Nicd battery can supply alot of current, both surge abd continuous. This may be why it works in this case. If your external battery is not NiCd, it might cause a (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I had this same problem when I got mine a few weeks ago. I ended up putting a capacitor from pin 1 to pin 3 on U2 of the sonar driver board. I also had to take out the 1k resistor from the BINH. It kept BINH at 1 V instead of Zero and that seamed (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Polaroid trouble again
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Hi! I am having trouble with my Polaroid sonar: When I keep my HB hooked up to external power, I will only get correct readings up to 20 inches. As soon as I use battery power without hooking it up to external power, the readings are correct up to 6 (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I have no experience with the sonar but having followed this mail list for a while ... Is it possible that you are triggering the sonar too frequently? Mike (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | HandyBoard For Sale
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I have an extra one extra controller board that I assembled and tested. Never used in a project. Controller 2x16 line LCD Nicad Batteries RS-232 Interface/ Charger Board RS-232 Cable $225 If interested: Mike Davis ipscone@halcyon.com -- ---...--- (...) (26 years ago, 1-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Digital out puts
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Please see the FAQ, specifically: (URL) the answer. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Digital out puts
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Hi guys, The handy board specification does not tell the number of digital outputs it has. I need at least four digital outputs from the board in order to make my robot function. Is there any way I can do this? Thanks, -anton (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | unsubscribe
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please unsubscribe me. I may be in as les@psi.bc.ca thanks (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: power glitch
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Please see the FAQ: (URL) is a known issue, with a simple fix: make sure to bootstrap with the board with pcode_hb.s19. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Update on the expansion board.
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Hi. The beta testers are still discovering issues, so I'm not ready to release the design just yet. I'm particularly waiting for results of multi-servo testing. But, it appears that the basic design is sound, and only minor rework (if any) will be (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | power glitch
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I have just started useing my handy board and have had to deal with many power glitches. I don't know if this happens often, or if something is wrong. It seems to happen at any time, even when I have only turned the board on and done nothing else. (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: beginner
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"Handyboard for Dummys"... No, just kidding. Maybe not just yet. :) Check the HB HP for the "HB Technical Reference". You can download it. Gleason Electronics sells HB kits and Assembled HB's. They have a starter package. Get IC 3.2 from Newton (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | ir reflectance sensors found !!!
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Howdy, When browsing through the catalog of CONRAD ELECTRONICS (www.conrad.de) I found an IR reflectance sensor with build in logic to measure distances between 10 and 80 cm. I requested the datasheets and they arrived today; I am gonna order (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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