Posts in Circuits

How to calculate ceramic capacitor values along with a table of pre-calculated values.

This is a simple clapper project that can be used to turn appliances on and off.

Here's a simple relay circuit that can be driven by a low current output along with a PCB for it.

A I/O controller box using a U401 which provides a USB interface to a PC.

A 3D printed robot arm controlled using a Python script on a Raspberry Pi using a Wii remote controller.

This is the project page for raspberrypi-motion, a Raspberry Pi based motion tracking network camera.

How to sniff Raspberry Pi I2C communications with a Bus Pirate.

How to connect up a 24LC256 EEPROM to the Raspberry PI using the I2C bus and an already existing Linux kernel driver.

A brief introduction from unboxing to toggling an on-board LED for an Arduino UNO.

An introduction and complete tutorial to programming a 8-bit PIC16F688 Microchip PIC on Linux with inline programming and a sample program to toggle an LED.

This is a little power supply that provides both 12 and 5 volt DC outputs.

A simple bench variable power supply build for use with all sorts of projects.

Simple mounts I made to hold a Raspberry Pi for development projects.

How to etch circuit boards easily and quickly for prototyping and hobby projects.

A relay box that interfaces a PC parallel port.