At present, esp32 is used to test and drive OLED, which proves that the display is normal. It may be replaced by other low-power MCU in the future.

In addition to the 3.3V power supply, the OLED needs to provide an additional 12.5V voltage, which can be provided separately by tps61040dbv. It has very low static power consumption, 28 μ A。

Of course, if you have a more suitable chip recommendation, please leave a message in the comment area below. Thank you very much.