All work
Smart metering · Zephyr
iQ DSMR meter reader
Firmware for a LoRaWAN meter reader that reads real-time electricity and gas consumption from Dutch smart meters (DSMR P1) and reports it to the cloud, with Bluetooth LE configuration.
- Client
- YOBIIQ B.V.
- Role
- Embedded Software & IoT Consultant
- Period
- 2023 - Present
What I built
- DSMR P1 client parsing electricity and gas telegrams (DSMR 3.0 and later)
- Pass-through port that shares the meter feed with third-party equipment
- Two opto-isolated pulse inputs for water or other meters
- Optional relay output for consumption-based control
- Temperature and humidity reporting alongside meter data
- Remote updates over LoRaWAN FUOTA (multicast) or BLE DFU
The device
Wall-mounted meter reader (140 x 140 x 20 mm, IP30), powered by the smart meter or over USB-C, for the Netherlands, Belgium, Luxembourg, Austria and Sweden. CE, EMC and RED certified for the EU.
Technologies
- Zephyr RTOS
- DSMR P1
- LoRaWAN
- FUOTA
- Bluetooth LE
Next case study
RM200 relay controller