I've built my own tube amps and pedals. Once you've got the basics down, it's not hard. Just BE CAREFUL with the high voltage!
That being said, maybe try this pedal instead?
https://c2celectronics.com/product/black-eye-pcb-set/
HahahahahahhaHA! I got it working! I had to have a buddy fix the code so it would compile and I futzed around with the MIDI CC numbers, but we're there man!