Category Archives: Hardware projects

This is a simple way for adding head lights, brake lights and tail light for a RC car. I used a LM324 op-amp to filter the PWM signal from the servo channels. The throttle channel is heavily filtered to get … Continue reading →

This is a double H-bridge that can be used with PWM to control the output current. It uses some NAND logic to make sure there will be no shoot-through shortening the supply voltage by opening both high-side and low-side MOSFET’s … Continue reading →

This is a simple pulse generator to use for testing purposes. It uses the LM324 operational amplifier, and the frequency can be controlled with a potentiometer. The LM324 chip is not that fast, so the frequency will be limited. I … Continue reading →