NUCLEO-WL55JC2
The STMicroelectronics NUCLEO-WL55JC2 is a development board based on the STM32WL55JC microcontroller that comes with a built-in temperature sensor and a light sensor. The NUCLEO-WL55JC2 board supports a wide choice of Integrated Development Environments (IDE) and an expansion connector for Arduino UNO V3. Suitable for rapid prototyping of LoRaWAN® end nodes by adding sensors and actuators.
About this device
The STMicroelectronics NUCLEO-WL55JC2 is a development board based on the STM32WL55JC microcontroller that comes with a built-in temperature sensor and a light sensor. The NUCLEO-WL55JC2 board supports a wide choice of Integrated Development Environments (IDE) and an expansion connector for Arduino UNO V3. Suitable for rapid prototyping of LoRaWAN® end nodes by adding sensors and actuators.
The NUCLEO-WL55JC2 supports 2 regional frequency plans and operates as a Class A LoRaWAN device. A payload codec is published in the repository, so uplinks are decoded automatically when you onboard it to The Things Stack.
Key features
- Sensors: light, pressure, temperature, humidity.
- Payload codec included, uplink decoder ready for one-click activation.
- 2 frequency plans supported: CN470-510, EU433.
Vendor
At a glance
More from STMicroelectronics International NV
NUCLEO-WL55JC1
STEVAL-ASTRA1B
Hardware specifications
| Model ID | nucleo-wl55jc2 |
| Dimensions | 64.5 × 70 × 19 mm |
| Weight | 34 g |
| Operating temperature | -40 °C to 100 °C |
Sensors & capabilities
Certifications & compliance
Standards
Network profiles
Capabilities are defined per firmware version and frequency plan, exactly as published in the repository.
Firmware LoRaWAN_End_Node v1.0.0
| Frequency plan | MAC | Reg. params | Class | Join | Max EIRP | Certified |
| CN470-510 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 19 dBm | — |
| EU433 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 12 dBm | — |
Firmware LoRaWAN_End_Node v1.1.0
| Frequency plan | MAC | Reg. params | Class | Join | Max EIRP | Certified |
| CN470-510 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 19 dBm | — |
| EU433 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 12 dBm | — |
Firmware LoRaWAN_End_Node v1.2.0
| Frequency plan | MAC | Reg. params | Class | Join | Max EIRP | Certified |
| CN470-510 | 1.0.4 | RP002-1.0.1 | A | OTAA | 19 dBm | — |
| EU433 | 1.0.4 | RP002-1.0.1 | A | OTAA | 12 dBm | — |
Frequency plan coverage
Live decoder playground
Decode any hex payload client-side with the device's published codec, the exact code The Things Stack runs.
// pick an example or paste a payload, then Decode
Example uplink from The Things Stack
The full JSON message your application receives via MQTT or webhook when this device sends the payload above, raw bytes, decoded fields and radio metadata included.
// decode a payload above to see the full envelope
Codec source
// loading codec…
Add to The Things Stack
Manual setup
Create an application
In The Things Stack console, go to Applications → Create application and pick a unique application ID.
Register an end device
Choose From the LoRaWAN Device Repository and search for “NUCLEO-WL55JC2”. Select your firmware version and frequency plan.
Enter device credentials
Provide the DevEUI, JoinEUI and AppKey printed on the device label or QR code.
Power on & verify uplinks
Within a few minutes you'll see the join request and decoded uplinks in the Live data tab.