 | | Re: Interrupt Programming
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(...) (27 years ago, 9-Dec-97, to lugnet.robotics.handyboard)
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| | Re: Expected 141, Received 91, After 60 chars received
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Sorry, I'm running DOS 6.22 on an old Compaq 386 SX25. I've built one other board with this machine as the host, but I did download the latest IC zip file. (...) -- I am Bill of Micro$oft. You will be assimilated. Resistance is futi*&^%$#@ THIS (...) (27 years ago, 9-Dec-97, to lugnet.robotics.handyboard)
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| | Re: Expected 141, Received 91, After 60 chars received
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what is your OS. If you are using Win31/Win95, try HBDL.EXE instead of DL. fred In your message you said: (...) (27 years ago, 9-Dec-97, to lugnet.robotics.handyboard)
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| | Expected 141, Received 91, After 60 chars received
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I am assembling a Handy Board and I am getting the above error when I try to download the pcode_hb.s19 using dl (dl pcode_hb.s19 -port com1). I have just finished assembling section 6.0.4. Everything seems to have been working up to this point. I (...) (27 years ago, 9-Dec-97, to lugnet.robotics.handyboard)
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| | Re: Recycled Sonar units
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fyi The bad news: I did the same thing only to realize that the sonar unit in the Spectra uses a custom IC to control the transducer. The receive or analog IC is the same as the commercial ones. I did find out the pin outs to the connector but (...) (27 years ago, 9-Dec-97, to lugnet.robotics.handyboard)
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| | Re: PCBS IN THE UK
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(...) Yes I am in the UK, full address detailed below. The price of my boards is £19-50 for the pair (Handyboard and Charger/IF) which includes first class recorded delivery postage to anywhere in UK or airmail to Europe and any other zone one (...) (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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| | Re: High current speed controllers
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Whoops, the url for my H-bridge design should be: (URL) previous version was missing the 'robotics' in the middle. Thanks to Mike for pointing that out. --Chuck (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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| | Re: tracking an IR beacon
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If you want to get into _all_ the details of tracking you might see if the local library has a copy of "Tracking Multiple Targets with Examples from RADAR" published by ArTech House. This book is crammed with densely worded (and annotated with math) (...) (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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| | Re: High current speed controllers
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As for your question about controlling a motor with a PWM signal versus an analog level controlled by a power transistor, the issue is efficiency and power dissipation. If you use a power transistor to set the voltage at the motor, it will have to (...) (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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| | Re: High current speed controllers
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I designed a high-current H-bridge to use with my Handyboard (the specs are at (URL) heat sinks on the MOSFETs the bridge can control 50A. (You can substitute fets to get more power). The known problems with this design so far are that the power to (...) (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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