Plug the board in over USB, pick it below, click install. No toolchain, no downloads.
The camera node. Ships with an OV2640; pair it with a Wio-SX1262 on the edge pins. Defaults to sender because it has a camera.
The cheap base station. This is the radio board that plugs into the connector underneath the XIAO — it cannot be combined with the camera, which is fine at the receiving end. Defaults to receiver.
No camera interface. Defaults to receiver.
16 MB flash, 2 MB PSRAM, OLED. The comfortable base station. Note the high-power variant reaches 28 dBm, above the 27 dBm ERP ceiling of the 869.4 MHz band — the firmware refuses to configure it there.
The protocol itself compiles for this part, but the firmware around it does not: it is built on WiFi, NVS and a filesystem the nRF52840 does not have. Making it work means writing a different application — images off over USB or BLE, no access point — rather than adding a few conditionals. It is on the list, not in this build.
The board raises a WiFi access point called LoRaITP-XXXX.
Connect to it and open http://192.168.4.1 — that page has the
images, the airtime budget, and the settings: which end of the link this
board is, which regulatory region, and how many bytes a picture may cost.
Both ends run the same firmware. Flash two boards, set one to sender and leave the other on receiver.
EU868_G3 (500 mW, 10 %) from the settings page
once it does, and read
docs/duty-cycle.md
before you do.