The Surface Mount Merit Badge is the perfect way to learn surface mount soldering, then proudly show that you know how.
The Volksduino is a low cost, high power, shield compatible, complete Arduino clone kit.
48 Analog inputs for the Arduino. If that’s not reason enough to use this: you can also use any of those 48 as digital inputs.
Arduino, how does it work? The Breaduino shows you how, by walking you through the process of constructing a clone on a breadboard. (Limited Supply)
The “Knight Rider” circuit, old-school. No microcontrollers, only discrete logic, just like 1972.