TTGO T-Beam V1.0 & OLED & deep sleep needs proper power design

End Devices (Nodes) Hardware
23

Three possible workarounds for the I2C issues caused by (ill-behaving) external display:

  • Use a different OLED display module. Assuming this is an incidental and not a more generic (SSD1306?) OLED module related issue.

  • Use a separate/second I2C bus (with different IO pins) of the ESP32 for the display.

  • Connect the display via an I2C bus isolator like TCA4311A.