Parts list and buy links: • 28-pin DIP IC Socket - $0.30 - buy mouser • 16MHz crystal - $0.55 - buy mouser • momentary push-button switch - $0.15 - buy mouser • 1k ohm resistor - $0.05 - buy mouser • LM7805 5v voltage regulator - $0.35 - buy mouser • 2 x 22pF capacitors - $0.12 - buy mouser • 10nF capacitor (ceramic disc code '103') - $0.10 - buy mouser • 22uF capacitor - $0.02 - buy mouser • ATMe
![Perfboard Hackduino ($8 Arduino-compatible Circuit)](https://cdn-ak-scissors.b.st-hatena.com/image/square/a755ea4c0895dad4e8be0e707190349011dbea00/height=288;version=1;width=512/https%3A%2F%2Fcontent.instructables.com%2FFP1%2FG1SF%2FG8XPR3E5%2FFP1G1SFG8XPR3E5.jpg%3Fauto%3Dwebp%26frame%3D1)