Part 1 – I was working on a project for someone who needed a keypad for password entry. I couldn’t find my 3×4 keypad, but found a 4×4 keypad in one of my parts boxes. I modified the example sketch

Today I hope to add some clarification to a popular project, based on a Nintendo DS Touch Screen, with breakout board from Sparkfun ($10). The concept is simple. Print out a picture of your buttons, sliders, etc., slide it under

One of our upcoming projects is a wireless controller for model railroading. A tiny Arduino installed in the engine with a wireless receiver and a H Bridge motor controller chip will allow us to go forward, reverse, coast, brake, and

A few posts ago we discussed building your own I2C display to reduce the pin count from 6 to two. We have also added 5 inputs to this project, a video of the commercial version, and posted the instructable that

The “Internet of Things” is one of the most exciting topics around these days. Millions of internet enabled gadgets sending data to a data storage & reporting server, and retrieving data back for local control or display. Our last post

Build your own IOT service! Collect sensor data and send it to a web/database server. Today’s project uses an Arduino equipped with a Ethernet shield, and a DHT-11 temperature / humidity sensor. Arduino UNO Arduino Ethernet Shield DHT-11 Module (ESP8266