Embedded software from JeeLabs
Embello Home Page
Forth Library Documentation
The “HY-STM32F1xxCore144 Core/Dev Board” is an STMF103 board sold by
It has an STM32F103ZE with additional RAM and flash memory.
The LED is on PF6, “1” is on.
Schematic: as PDF (copied from the HotMCU site).