Several of the members who have ordered boards, have asked for details on where I go the various parts.
The best place to start is the
OnStep forums . Here you can access the wiki and through it, the design and BOM lists at EasyEDA. I've attached 2 spreadsheets from my Mouser order that may help. Things not in the BOM include the nodeMCU I used, stepper drivers and header pins for the MCU - these were things I already had from other projects. I ordered from Mouser as they had all parts in stock and I use them for electronic components.
They charge $25 delivery for orders under $60
I got the ESP32
nodeMCU from eBay. Stepper drivers (TMC2130) were bought through Aliexpress.
If there is any other info I can provide, please ask.