A TV Transmitter from an STM32
6 hours ago
- #Analog Electronics
- #Microcontroller Hacks
- #TV Transmission
- An STM32 microcontroller generates VHF TV transmission using internal oscillators and analog multiplexer.
- Video is produced via the MCU's DAC and op-amp multiplexer, switched at VHF frequency, but lacks color and audio.
- Audio is created by modulating the USB internal RC oscillator to a 5.5 MHz offset from the vision carrier.
- The current implementation is black-and-white only, as it doesn't generate the PAL color sub-carrier yet.
- Alternative approaches include adding composite video input or using single-board computers like Raspberry Pi Zero.