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 | | diodes in h-bridge
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| What do the diodes across Q1-Q4 do, in Chuck's h-bridge design? I haven't figured that out yet.... (30 years ago, 20-Apr-96, to lugnet.robotics.handyboard)
| | | | | Code for Polaroid Sonar board
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| Hi Kent, I just wanted to let you know that your code for the Polaroid ranging boards is fantastic! It works right out of the box! Keep up the good work. - Prabal P.S. For anyone who doesn't know what I'm talking about, Kent wrote some code to (...) (30 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
| | | | | RE: diodes in h-bridge
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| When the motor power is removed, the motor generates a reverse voltage. This voltage can damage the transistors, the diodes provide a conductive path back to the power supply to absorb these spikes. Convieniently, N-channel MOSFETs (and other (...) (30 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
| | | | | Handy and mini boards
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| Has any one thought of the possibility of interfacing a miniboard to a handyboard? It would be a cheap way to get extra input/ motor control. Is this possible? (30 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
| | | | | Re: Handy and mini boards
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| (...) Yup. Worked for me. :-) I used port D on the HB as a 4 bit output, ran a cable from there to port C on the MB, and used one of the Y signals on the HB as a data ready line. On the MB side of things, I just sat in a loop waiting for YX (where X (...) (30 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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