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
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In operation
Loading from tape (actually mp3 played on mobile phone)
Loading from SD card
Downloads
| stm32f103ret6_orao.bin | BIN file to burn into STM32F103RET6 microcontroller |