So, I've been researching and doing more tweaks to the radio PCBs. There's been a few commits to the git, mostly adjustments with grounding and ground pours. The main part about this update is the addition of an adapter PCB. This PCB converts the 2.54mm header into snap fit JST connectors breaking out the SPI to a 6 pin connector with power and ground, and USART broken out to a 4 pin connector with power and ground as well. With this addon adapter the S1G radio modules can be used by embedded devices in lieu of USB connectivity.

3D Views

The PCB press fits ontop of the radio modules and can be screwed down. I am going to design some 3D printable spacers/standoffs to sit between both PCBs. There will be other adapters down the line to make interfacing with the S1G simple for many different applications, there will also be a printable housing that supports these modular adapters. Stay tuned for more updates on the project!