Netzer module

Around the Netzer module, a number of relais are mounted.

• 1 Pump relais (at Pin GPIO 0)
• 2 Valve relais (at Pin GPIO 1 & GPIO 2)

There also 4 switch buttons inputs wired

• button 1 to  start pump only (at Pin GPIO 4)
• button 2 to  start pumping with valve 1 (at Pin GPIO 5)
• button 3 to  start pumping with valve 2 (at Pin GPIO 8/SPI CS)
• button 4 to  toggle through the operation modes (block, auto and manual) (at Pin GPIO 8/SPI INT)