Home - AlistairSymonds/SympleAstroFocus GitHub Wiki

Welcome to the SympleAstroFocus wiki!

Here we have documentation for various user interactions with the SAF. If there's something which isn't clear or needs more detail - please open an issue.

First you'll need to download the driver from the latest releases - and a FW binary too if flashing yourself.

Releases: https://github.com/AlistairSymonds/SympleAstroFocus/releases

Depending on which option you're using for HW one of the following reading orders is suggested:

Ordered preflashed board from me directly

• https://github.com/AlistairSymonds/SympleAstroFocus/wiki/Initial-and-Sensorless-Homing-Parameter-Selection

Ordered an assembled board from JLCPCB

• https://github.com/AlistairSymonds/SympleAstroFocus/wiki/Programming-the-microcontroller
• https://github.com/AlistairSymonds/SympleAstroFocus/wiki/Initial-and-Sensorless-Homing-Parameter-Selection
• Extra HW needed:
  • STLINK to program PCB

Creating your own HW from readily available TMC2209 and STM32f103 modules:

• https://github.com/AlistairSymonds/SympleAstroFocus/wiki/Bluepill-and-bigtreetech-TMC2209-assembly-Guide
• https://github.com/AlistairSymonds/SympleAstroFocus/wiki/Programming-the-microcontroller
• https://github.com/AlistairSymonds/SympleAstroFocus/wiki/Initial-and-Sensorless-Homing-Parameter-Selection
• Extra HW needed:
  • STM32F103 Bluepill devboard
  • TMC2209 Stepper Module
  • 1k resistor
  • Means to wire up/connect the two modules
  • STLINK to program Bluepill