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We are integrating the ESP32 onto the PCB directly and removing the devkit. We cannot get low currents without it.
Load Switch Evaluation
Mode | Icc measured | |
|---|---|---|
Deep sleep only | 10,4mA | |
Deep sleep with Wifi stop | 197µA | |
Deep sleep with WiFi stop and accessory power off | 104µA | |
Deep sleep with WiFi stop, accessory power off and EEPROM | 271µA | |
Deep sleep with WiFi stop, accessory power off, activated EEPROM, deactivated GPIO33 in deep sleep | 250µA |
Sensor Management
Sensor | Supply | Comments |
|---|---|---|
DS18B20 | 3V3_ACC | |
Rain tip | 3V3 | WAKE_EVENT driven |
Wind Speed | 3V3 | |
Wind Direction | 3V3_ACC |
3 x I²C-Port | 3V3 |
3 x I²C-Port | 3V3_ACC |
LUX
3V3_ACC
Photo resistor | 3V3_ACC | |
**We need to consider a debounce circuit or an external I2C counter chip for wind evaluation. For now, I prefer to use a time slice based approach. We can WAKE periodically to take wind evaluation data without powering up the WiFi radio.