KNX Garden Sensor

KNX control unit to read garden sensor values.

Key features

Supported sensors / inputs:

• 1x 4-20mA current loop input (e.g. TL-136 water pressure sensor for cistern fill level)
• 3x 16bit analog inputs (e.g. for Truebner SMT 50 humidity / temperature sensor)
• 1x 10bit analog input (e.g. for Truebner SMT 50 humidity / temperature sensor)

Requirements

• Arduino pro mini (3,3V or 5V)
• Siemens BCU (KNX bus coupling unit)
• Some soldering skills
• [Optional] Fits best into Phoenix Contact EH 45 FLAT DEV-KIT KMGY case

Setup

# Compile and flash to Arduino
./build-and-flash

Usage

1. Connect sensor devices
2. Connect to KNX network

Current sensor values are transmitted periodically to pre-configured group addresses.