STM32_T12_858D PCB

These boards are based on Alexander's project: https://www.hackster.io/sfrwmaker/stm32-based-soldering-and-rework-station-e3955b#overview
and on this project https://easyeda.com/johngr/stm32-soldering-desoldering-station
I just made it my own way and I think it's more convenient to make it at home.  PCB is actualy singlesided with some wire jumpers on the upper side. Power supply and relay are located on an additional board.

Final version 11 - size of the main board is reduced to 80,6mm/99mm. Now it's possible to fit it verticaly in ATX power supply case. PCB is modified according last version of the schematic.