used Hardware
- ESP8266 2* 4€ = ~8€
- Kuman Relay Shield 8ports 2* 10€ = ~20€
- PCF8574 2* 7€ = ~ 14€
- power cable 2* 5€ = ~10€
- sockets 8* 2€ = ~16€
- shelfs 2* 2€ = ~4€
Kuman Relay Shield Module 8 Kanäle Relais Modul Brett 5V für Arduino UNO 2560 1280 PIC DSP AVR ARM STM32 Raspberry Pi DSP K30
I2C Expander PCF8574: WINGONEER PCF8574 IO Erweiterungsplatine I / O-Expander I2C-Bus Auswertungs-Entwicklungs-Modul
... and some power cable and some sockets