LoRa and LoRaWAN Field Node
Compare raw LoRa packets with LoRaWAN device activation, uplinks and duty-cycle constraints.
Topology and objective
Sensor node → LoRa gateway → LoRaWAN network server → application.
Hardware and tools
- Supported development board
- USB data cable
- Current-limited supply
- Serial monitor and logic analyser when applicable
Security and RF safety
- Use only permitted regional bands and power.nProtect root keys and frame counters.nRespect duty cycle, airtime and fair-use limits.
Practical procedure
- Confirm legal frequency plan for the region.nWire SPI radio and verify chip version.nConfigure OTAA test credentials.nJoin the network and send a compact uplink.nObserve gateway metadata, RSSI, SNR and downlink limits.
Telemetry / payload
{"port":10,"payload_hex":"19025A","temperature":25.0,"battery":90}Starter code / config
Use OTAA with unique AppKey/NwkKey placeholders; never reuse production keys.Expected results
| Checkpoint | Expected | Tool |
|---|---|---|
| Join | Join accept received | Network consolenUplink |
Troubleshooting
| Symptom | Check | Action |
|---|---|---|
| Join fails | Check keys, frequency plan and gateway | Correct region/credentialsnNo decode |
Local-only sandbox
Commands & telemetry simulator
Send command
Simulator ready. No network connection is used.