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Hi, I what to built a four wheeled robot which uses differential steering. Have somebody an idea to transfer the motion energy from the motor powered back wheels to the front wheels? Jens (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | Re: before I reinvent the wheel
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before I reinvent the wheelI haven't actually done this, but I'm pretty sure the theory is ok... On the handyboard web page is the pa79600 icb file which lets you use port a bit 7 as serial i/o. I have successfully used this to control some (...) (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | before I reinvent the wheel
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Has anyone used their HP48 to talk to a handyboard? (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | Using 12V supply with Expansion Board?
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Hello 'Botter, I think I am about to ask a stupid question but as a precaution, will the Expansion board be "ok" with a new 12V motor supply rather than the 9.6V connected to the Power Expansion header (J13)on the HB since the Expansion board and HB (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | (canceled)
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| | Re: Shaft encoder
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(...) The shaft encoder library routine available from the Handy Board web site works great for me. Just follow the links to Software, then Libraries, then Shaft encoders. Good luck! -- Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | RE: OVER 1 AMP
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You can also stack a few of the original chips to make em work in parrallel. (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | OVER 1 AMP
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Oh yeah, one more thing, how about connecting a 5 ohm resistor in series with a DC motor and there are 2 amps flowing, then the resistor is dissipating 20 watts of heat. Now I could have a higher value for the resistor, like 7, 10 ohms, I think that (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | OVER 1 AMP
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Thanks everyone for your help, Now, I recieved two good answers for my problems. 1) Built an H-Bridge 2) Use the LMD18200 Now has any one any documentation on an easy H bridge that I could build without wasting much time? The same goes for the (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | Shaft encoder
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To anybody, I have build a shaft encoder. Where can I get the software driver to evaluate the encoder data? Thanx, Jens (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | Re: OVER 1 AMP
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Do you know where the Caps Lock key is on your keyboard? Look for it, there is a little diode lighting up when it's on. If you see the little light, please do me a favor and before typing your email press the caps lock key once. GET IT? THANKS FOR (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Re: OVER 1 AMP
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(...) Yes. (...) Built my own H-bridge. (...) No, they would burn up. (...) Yes, it would burn them up. It is much easier to build and H-bridge. (...) A simple common collector H-bridge made out of TIP120 and TIP125 power transistors will handle (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Re: [OT] decoding the LEGO #9738 IR Remote Control
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Matt - - Downloaded Max Davies' files, ran them on my HandyBoard ... decoded the IR signal from both RCA and GE TV/VCR remotes with no problem, but with the LEGO remote it says "RC-5 NOT SUPPORTED". I guess that RC-5 is an IR encoding protocol ... (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | OVER 1 AMP
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HAS ANY ONE USED MOTORS RATED OVER 1 AMP WITH THE HANDY BOARD? IF SO, HOW DID YOU GO ABOUT INTERFACING WITH THE HB? DID ANYONE USE THE L293 D/B, OR THE SNJ74 ? IS IT A BAD IDEA TO PIGGY-BACK MORE THAN TWO OF THESE CHIPS IN PARALLEL, SAY 3 OR 4? THIS (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Purchase 6811s
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BG Micro has 'em. go to www.bgmicro.com, click on "Shop Online," and search for "68HC11". fred In your message you said: (...) (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | Purchase 6811s
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Anyone know where I can purchase some MC68HC11A1FNs. A Motorola web-site or something. - Thanks (25 years ago, 20-Sep-99, to lugnet.robotics.handyboard)
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| | [OT] decoding the LEGO #9738 IR Remote Control
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Hello All: This LEGO IR remote control (#9738) is making me crazy!!!! For those of you who haven't been reading this thread, what I want to do is the following: The LEGO IR remote control is GREAT for use with 'bots using the LEGO RCX for brains. (...) (25 years ago, 19-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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I'll vouch for the efficacy of the Fascinating Electronics board. I got one years ago after reading the series in Electronics Now/Radio-Electronics using it as a weather monitor. It works fine connected to an HP48 calculator for control of I/O as (...) (25 years ago, 19-Sep-99, to lugnet.robotics.handyboard)
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| | noice
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Hi everybody, I'm a novice in the field of microcontrollers, and I'm trying to use the handyboard with ICC11V5 and NoICEV2.5.2. The compiler gave me no problem (thanks to a search on this list archive!) but I can't get NoICE to work. Has anybody on (...) (25 years ago, 17-Sep-99, to lugnet.robotics.handyboard)
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| | Re: HandyBoard and Jini
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(...) Since the HB does not support Java/RMI/TCP etc it's not likely that you'll see Jini on the HB any time soon. However, it would be fairly straightforward to create Jini proxies on a host computer that act on behalf on the HB functions. I plan (...) (25 years ago, 16-Sep-99, to lugnet.robotics.handyboard)
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