In 1976, a 6×7 inch breadboard from AP was about $50. Meanwhile, back in 1974, [Cooper] wanted to put together circuits easily. His solution? A wooden board, some copper pipe, rubber bands ...

As you can see, it’s just narrow enough to leave one row open on the breadboard for jumper wires ... For your convenience we’ve embedded the schematic after the break, along with [Frank ...

Before opening the Arduino software, wire up the Arduino according to the circuits page using the 8MHz minimalist breadboard circuit but with a 10k pull-up resistor on the reset pin (physical pin 1).

Fundamentals of analog filter design and linear circuits are covered in a book and kit of parts that are available on Kickstarter, which ends on April 16, 2025.