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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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