A driver built around a microcontroller instead of 74-series logic. The author offers it as a building block: “not supposed to be a finished product, but a building block for some DRSSTC project”. It was published because “the STM32 microcontroller family is very popular right now, also among hobbyists”. An STM32G474RBT6 on a 24 MHz crystal does the comparison work in silicon. The feedback current transformer comes in on J1 through a US1A clamp bridge and a 3.3 V zener and goes straight to the chip’s own comparator inputs. Four IXDD614PI gate drivers in two pairs give two independent half-bridge outputs with separate enable lines. SWD and a debug header are brought out, and a jumper selects burst mode. The repository has a second, worked sheet: the same core turned into a complete DRSSTC board with two pots, a switch, an op-amp cascade, I²C, serial and a twelve-pin expansion connector. Documentation is sparse: no licence file, no README, and the title blocks on both sheets are blank.
Schematics and photos
schematic: the driver core (KiCad, 19 May 2025) 
schematic: the worked DRSSTC example board
Sources
This is the card from the driver tree, written from what the builder published. Send corrections through the forum.