He’s been working on DIL-Duino, a minuscule form factor Arduino in an 8-pin DIP format. Built with an ATtiny85, the board has an area of just under 75 square millimeters (less than 8 mm x 10 mm).

You have to pull an extra wire from the sensor’s input voltage to your Arduino’s AREF pin, ... Somewhere around -15 C any load will make the cell look like empty. Report comment. Bunsen says: ...