Testing Arduino motor shield with servo motor

Recently I’ve got Arduino motor shield. It is based on ladyada original mshield circuit. It uses two popular L293D quadruple half-H divers. It is cheap and reliable shield to drive various motors. These can be 2 hobby servo motors, 4 bidirectional DC motors or 2 (unipolar or bipolar) stepper motors. Load current is limited to L293D chips. Specification says that each channel can provide constant 0.6A and peak 1.2A. There is also a thermal shutdown to prevent circuit from damaging. Motors can be externally powered using voltage range from 4.5V to 36V. Each motor control channel is pulled down with resistor to disable any motor at power up. In this post we are going to try servo motor control There are couple connectors on motor shield where you can connect two servo motors using standard 3 wire connector (GND, VCC and PWM). There are two options in powering motor. You … Continue reading →