STM32F103RET6 Orao

23LC1024 serial SRAM I used in the version with the STM32F103C8T6 microcontroller turned out to be a bit too slow though, so I decided to make new version with the STM32F103RET6 microcontroller.

Electronic schematic

The circuit generates a composite PAL video signal and the programs are loaded via analog audio input or from SD card.

Finished electronic circuit

In operation

Loading from tape (actually mp3 played on mobile phone)

Loading from SD card


stm32f103ret6_orao.bin  BIN file to burn into STM32F103RET6 microcontroller

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