Paul, The Pololu board would not work to "amplify" the current capability of a standard r/c servo. The Pololu board is a bit to intelligent in that it has it's own processing capability and determines motor speed and direction via separate PWM and direction signals. Though the Pololu board has an h-bridge the board itself is not controlled like a typical h-bridge circuit. It is meant to be controlled be a microprocessor and not as something as crude as a hacked hobby servo.
The hack we are discussing replaces the internal and very basic h- bridge circuit of the servo with an external higher capacity circuit. This h-bridge circuit requires a PWM speed signal on one of either two inputs unlike the Pololu board which has only one input for the PWM speed signal and a second to determine direction. Simple h-bridge boards a few and far between. The Tecel was one, RobotPower simple h-bridge is the only other commercial h-bridge that I can recall offhand. Most servo hacks off this type I've read about usually involves making a custom h-bridge board, which actually isn't very difficult to do. Here's a link for one such project. http://130.94.182.150/mowers.htm (scroll down to "CONVERTING STANDARD R/C SERVOS INTO MONSTER SERVOS") Steve Tyng --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
