Speed and direction control of an 8A Brushless DC motor ($7) using an 18A ESC ($8) and a 10A Double Pole Double Throw [DPDT] relay ($10). Speed control is achieved by varying the duty cycle of a 50Hz digital pulse from the Arduino to the ESC signal wire. Direction control is achieved by wiring the ESC==Relay==Motor so that when the relay switches, it reverses two of the three phases to the motor.
Tuesday, February 28, 2012
Sunday, February 26, 2012
Landing Gear Motor w/ Momentary Switch
New (drill) motor attached to 9.6 Volt rechargeable battery and momentary dpdt (double pole double throw) switch.
Friday, February 24, 2012
Leon's Magnet Pump.mov
The Magnet Pump has a DPDT Reed switch with the battery leads shorted in the switch, and the battery in series with the coil on one side and the output capacitor wired in series through the other.
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