tinyRemote A 12 keys IR remote controller using ATTINY414, with learning capability Designed for soldering practice Reference code in directories "remote" and "learn" bare pcd available at TINDIE Annotation PCB Top view PCB Bottom view Schematic BOM Description Package Quantity Designator Tactile switch smd 6 x 6 12 npn transistor BC817 SOT-23 1 Q2 LED green 0805 1 D3 Ceramic capacitor, 1nF 0805 1 C3 Ceramic capacitor, 1uF 0805 1 C1 Micro-controller ATTINY414-SS SOIC-14 1 U1 Resistor 4k7 0805 3 R5, R6, R7 Resistor 18 ohm 0805 3 R1, R2, R3 Resistor 470 ohm 0805 1 R4 Diode Schottky, MBRA340 SMA 1 D1 IR photo-transistor, PT17-21B 0805 1 Q1 IR LED D=3mm 3 D2, D4, D5 Pin Header 1 x 4, pitch 2.54 mm, straight 2 J1, J2 Battery holder, 2 x AAA, Keystone 2468 1 UPDI/UART to CP2102(usb2ttl) connection UPDI UART CP2102 + + 3V3 4k7 RXD TXD UPDI TXD RXD - - GND