Three SPI Busses Are One Too Many on This Cheap Yellow Display
1 min read
Summary
The Cheap ESP32 Yellow Display has become popular with users due to its low cost and variety of useful on-board peripherals, but some have found issues when using more than two simultaneous SPI interfaces.
To solve this, blogger Mark Stevens has devised a simple hardware modification, posting instructions for others to follow along.
This modification allows the LCD display and SD card to share the same SPI bus, while retaining their individual chip select lines, freeing up a SPI host for additional SPI devices, such as an additional SD card.
The hack involves cutting a track and wiring, nothing overly complex, but it could help others trying to maximise the board’s functionality.
Stevens also provides further inspiration for things to do with the board.
