Physical computing wireless tutorial - Remote control with RFM69HCW packet radio

Easy Arduino TX/RX. How to pack different data-types in a struct and transmit it over several hundred metres using RadioHead

Setup

You can click the image to play the associated YouTube video

Schematic

BOM

€  54,00 2 Adafruit Feather M0 RFM69HCW microcontrollers
€  19,00 EREMIT 1S 10000 mAh Li-Po battery
€  14,00 Olimex 1S 3000 mAh Li-Po battery
€   2,00 CdS photoresistor
€   1,00 Breadboard trim potentiometer 10kΩ
€   1,00 Tactile button momentary switch
€   1,00 Red LED (generic)
€   7,00 Pololu power HD Micro Servo HD-1900A
€   2,00 8 Ohm 0,2W loudspeaker (generic)
€   1,00 ON Semiconductor TIP120 NPN Darlington-transistor
€   8,00 2 Half-size transparent breadboards
€   2,00 Breadboard mini modular black
€   1,00 Jumper cables
€   2,00 1µF 10V el. cap, 100Ω, 1kΩ and 4,7kΩ resistors
€ 115,00

Useful links

μc https://www.adafruit.com/product/3176
RadioHead library https://www.airspayce.com/mikem/arduino/RadioHead/
Servo https://www.pololu.com/file/0J321/HD-1900A.pdf
Transistor https://www.onsemi.com/pub/Collateral/TIP120-D.PDF