Solarstation-ESPHome

Solarstation for Solarthermie with ESP32, ESPHome, HomeAssistant

Komponents:

1. ESP32 https://de.aliexpress.com/item/1005003413562394.html
2. LED or OLED Display https://de.aliexpress.com/item/4000790549724.html
3. Integration with HomeAssistant
4. Case (3D-Print?)
5. 2 Way Relay https://de.aliexpress.com/item/33038634587.html
6. MAX31865 https://de.aliexpress.com/item/1005001351273869.html

Input:

1. 4x TemperaturSensor ds18b20
2. 2x PT100
3. Setting for delta, Wlan, Language

Output:

1. Pumpe Solar GPIO32
2. Pumpe Circulation GPIO33
3. LED

Dallas: You can actually connect multiple sensors to a single pin and use them all at once.

4x ds18b20 will be connect to ESP32: - GPIO14 - GPIO25 - GPIO26 - GPIO27

Pinout description for a ESP-WROOM-32 see hier: https://www.studiopieters.nl/esp32-pinout/

PT100 with MAX31865: https://esphome.io/components/sensor/max31865.html

• VIN connects to 5V (3V3 will output 3.3V), or directly connect 3V3 to 3.3V
• 3Vo is not used by ESPHome
• GND connects to ground
• CLK connects to the SPI clk_pin / GPIO18 /GPIO6
• SDO connects to the SPI miso_pin / GPIO19 /GPIO7
• SDI connects to the SPI mosi_pin / GPIO23 /GPIO8
• CS connects to a free GPIO pin / GPIO5 /GPIO17
• RDY is not used by ESPHome