This repository hosts the OpenKNX-based firmware for an Elcom-1+n KNX Gateway that can interface a legacy Elcom-1+n doorbell system with KNX. It supports both the main doorbell (via connector #6) and storey call ("Etagenruf"; via connector #3) as well as actuating the door opener.
Its hardware is based on the OpenKNX UP1 System used in combination with a custom application PCB.
- R1, R2: 0805 10 kΩ SMD resistors
- R3: 0805 100 Ω SMD resistor
- R4: 0805 100 kΩ SMD resistor
- R5, R6: 0805 1 kΩ SMD resistors
- D1, D2: SOD-123 1N4148 SMD diodes
- C1, C2: 0805 10 uF 10 V SMD MLCC
- Q1: SOT-23 BSS138 SMD MOSFET
- K1: Zettler AZ850-5 relay
- U1: LiteOn LTV-827 optocoupler
- J2: 2.54 mm 3-pin screw terminal
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This project is not endorsed by or affiliated with Hager.