Add a typing interface to your project with this microcontroller-friendly miniature keyboard. We found the smallest PS/2+USB keyboard available, a mere 8.75" x 4.65" x 0.6" (220mm x 118mm x 16mm)! It's small but usable to make a great accompaniment to either a microcontroller project or a computer such as the Beagle Bone or Raspberry Pi.
15 rows of double 5-hole rows + 48 individual holes. 2 power rails with positive/negative markings. 2.1" x 1.3" (54mm x 33mm), 0.063" thick FR4. 1.2mm / 0.047" drill holes. 4 x 0.125"/3mm drill mounting holes spaced on a 45.5mm x 25.4mm / 1.8" x 1" rectangle.
This breakout AVR board is a prototype design with minimum components. We took the business-card-sized AVR target board from Evil Mad Scientist Laboratories and added a few components to make an AVR dev board that has only the bare minimums!