Bill Rowe's Olduino

Ok, this is just cool! Bill Rowe has taken the stripped down 8-bit computer kit called the Membership Card that is powered by the RCA 1802 and created a shield for it so that it can use Arduino shields. Not only that but he's developed a C compiler to make the job of writing code easier. He's used this tech to interface colour LCD displays, ultrasonic sensors, and currently, he's running it as a web server and you can toggle the hardware remotely. This is nearly 40 year old technology. Amazing!