Category Archives: Hardware projects

Moody Useless Machine

This is a project i did a while ago. I made one for my self and two as gifts. I decided to crack open the one I had left, to get some photos and video of the inside. I also … Continue reading

Posted in Hardware projects | 97 Comments

RC car head, tail and brake lights LED control board

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

Posted in Hardware projects | 4 Comments

Double PWM controlled H-bridge for interfacing with an Arduino

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

Posted in Hardware projects | 11 Comments

Simple Pulse Generator using LM324 opamp

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

Posted in Hardware projects | 2 Comments