Working on this when I can, Pneuman's controller has been upgraded from a chunky old PC with a synchronous serial connection to an Arduino (OMG Arduino!!!). A WiFly shield communicates with the user interface (a PC kiosk somewhere) and a 6-channel Darlington driver board fires the solenoid valves to pump his legs. Three analog inputs are used to capture the values from optical pickups aimed at a 3-bit grey-code encoder wheel fixed to the cranks of the bike. This gives a starting position for the uC to pedal from. Two digital inputs are used for the front and back travel limit switches.
Monday, July 26, 2010
Pneuman update
Working on this when I can, Pneuman's controller has been upgraded from a chunky old PC with a synchronous serial connection to an Arduino (OMG Arduino!!!). A WiFly shield communicates with the user interface (a PC kiosk somewhere) and a 6-channel Darlington driver board fires the solenoid valves to pump his legs. Three analog inputs are used to capture the values from optical pickups aimed at a 3-bit grey-code encoder wheel fixed to the cranks of the bike. This gives a starting position for the uC to pedal from. Two digital inputs are used for the front and back travel limit switches.
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