Jun 22, 2022

• I see UART traffic on the programming port, but R11 is a pull-down to GND for IO0. This needs to be a pull-up to 3V3

  • Board mod to follow short term

  • Does not affect programmer if R11 is left unloaded

  • Leave R11 empty and IO0 will pull high via ESP32 pull-up

Flashing the device is a success

Document photo of programmer setup below. No components are loaded yet. Programmer is supplying the voltage and EN/IO0 signals.

Open

Jun 24, 2022

• DS18B28 functions

• BME280 based I2C port works

• Adding Power supply circuit now

Jun 28, 2022

• LDO is running

• ADC values for VBAT monitoring are sane

• Still need to plug in anemometer and wind vane.

• Handing this build off to a local co-worker for extended feedback.

• Added an OLED monitor port for basic diagnostics (not to be connected all the time due to current draw)

• Moving on to my load/charge switch module on next unit

Jul 5, 2022

• Rain gauge is functioning

• Wind anemometer and vane operate

Summary of PCB bugs

• R11 tied to GND, not 3V3, tie right side of R11 (ESP32 towards you) to 3V3 somehow.

  • Use jumper wire or solder to 3V3 in an unused I2C port connection point

• C6 is not needed as C10 value controls the RC time constant on EN pin

• C8 is redundant? C3 already covers output from LDO