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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Ivor
Pity you can't caption or annotate pictures.
The board is similar to the rak5010, but includes a voltage convertor so has native 3.3v IO and exposed I2C, also connects more of the BG96 IO for both AT and GPS serial streams and uses a MAX17048 'fuel gauge' for useful/reliable battery state. I haven't included sensors since I think it's easier/better to hook those up with I2C (e.g. I found the on board temp sensor of the 5010 was pointless since it heated up with the board)
Exposed both the NRF and BG96 to USB, added a JTAG socket.
I've had to make two manual patches on the board, but have also just blown the BG96 🤦♂️
Will switch to a USBC connector, and currently using a TP4056 for the charger, but I'm considering switching to something more advanced since I definitely need to do another build and board update.
Also using a Holyiot-18010 NRF module, but wondering if there's a better choice for this.
(and lesson learned SOD523 diodes are the work of the devil, going to swap those on the next design.)