The hardware for phase 1 and 2 of the project used an off the shelf chip which implements 4FSK modulation in the 400 or 900 MHz bands. The Nucleo board is a development vehicle, the mini-node is an end-user device.
- NucleoCC2. An off the shelf evaluation board that supports 4fSK in the 400MHz band, but is limited in output power. Has a built-in debugger that can be used for programming and software development. Available from electronic distributors.
- Mini Node. An end-user device that attaches to a Pi Zero host processor, delivers a full +20dBm output, has limited debugging capability and is field upgradeable.
| Platform | Processor | Host | Modulation | Frequency | Power Output |
|---|---|---|---|---|---|
| Nucleo CC2 | STM32WL33 | n/a | 4FSK 100Kb/.s | 420-450MHz 902-908MHz | +14fBm |
| Mini Node | STM32WL33 | Pi Zero | 4FSK 100Kb/s | 420-450MHz | +20dBm |
Production Status
The Nucleo board is in distribution as long as supplies last. Due to a lack of availability of the Pi Zero and the WL33, the mini node has been put on hold indefinitely. Both nodes are supported by the unified firmware platform.