1 How to Re-program (reverse engineer) e-ink (epaper) Price Tags (Shelf Labels)
Linked mostly without comment when people ask about reprogramming electronic tags, and appears to show how Hanshow devices can be flashed.
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Linked mostly without comment when people ask about reprogramming electronic tags, and appears to show how Hanshow devices can be flashed.
Phil's Lab is the usual suggestion for flashing a custom STM32 board over USB with DFU and CubeProgrammer, avoiding a separate hardware programmer.
Offered as a practical walkthrough for loading a hex file onto a bare STM32 chip over SWD with an external ST-Link programmer.
Linked as a possible way to change an Arduino's USB firmware so it acts as a HID device, though commenters had not confirmed that it works.