![Heating System Control with a Raspberry Pi, Part 2: Wiring and Code, first version – CareTech Computing Heating System Control with a Raspberry Pi, Part 2: Wiring and Code, first version – CareTech Computing](https://www.caretech.io/wp-content/uploads/2017/12/RasPiB-GPIO_lightbox.png)
Heating System Control with a Raspberry Pi, Part 2: Wiring and Code, first version – CareTech Computing
![Farnell Electronics on Twitter: "See the full #RaspberryPi 3 Model B+ GPIO 40 Pin Block & PoE Header Pinout here: https://t.co/gxiAtOoCyj https://t.co/OucW0CcETr" / Twitter Farnell Electronics on Twitter: "See the full #RaspberryPi 3 Model B+ GPIO 40 Pin Block & PoE Header Pinout here: https://t.co/gxiAtOoCyj https://t.co/OucW0CcETr" / Twitter](https://pbs.twimg.com/media/DYULSXmWAAAZTaI.jpg)
Farnell Electronics on Twitter: "See the full #RaspberryPi 3 Model B+ GPIO 40 Pin Block & PoE Header Pinout here: https://t.co/gxiAtOoCyj https://t.co/OucW0CcETr" / Twitter
![Raspberry basics: Project 29a Raspberry PI Zero W board - Raspberry Pi GPIO Pinout at Acoptex.com / ACOPTEX.COM Raspberry basics: Project 29a Raspberry PI Zero W board - Raspberry Pi GPIO Pinout at Acoptex.com / ACOPTEX.COM](https://acoptex.com/uploads/raspgpiopinspro_3.jpg)