Finalised Hardware

The hardware is now working properly, v2.5 of the board. Firmware is still WIP. Hardware files attached to this release.

Initial version introducing compatibility with FreeFi232 Firmware

This version of the firmware is the first version really targeted directly at the FreeFi232 hardware. It is aware of the hardware flow control select jumper, and also controls the additional RS232 signals available on the FreeFi232 hardware. It is aware of, but ignores, the DTR signal.

Version for use with LoLin/NodeMCU

This version of the firmware is still targeted directly at the NodeMCU board. There are errors in the schematic, but I'd recommend using this release if you wish to use a NodeMCU together with a level shifter. Later versions start to be targeted towards the FreeFi232 hardware.