| title | summary | date | lastmod | draft | toc | type | featured | tags | menu | |||||||||||
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Hardware Guide of Pool Controller |
2020-05-28 |
2020-06-02 |
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This Hardware Guide will describe how to setup the hardware of the controller.
- 1 * ESP8266 NodeMCU Controller (Amazon)
- 2 * DS18B20 Temperature Sensors (Amazon)
- 1 * Relais-Module 5V (Amazon)
- 1 * Breadboard and wires to connect (alternativly soldering of the circuit)
The circuit of the controller could be found on following image based on a breadboard wireing:
{{< figure library="true" src="../pool-controller_breadboard.png" title="Breadboard Circuit of Pool Controller" lightbox="true" >}}
The source Fritzing file could be found in GitHub project: pool-controller.fzz
The ESP8266 is connected using following PINs. You can find the constant values within the sources
of main.cpp (first column of table) which are associated to the pins.
| Constant in Source | PIN of ESP8266 | Description |
|---|---|---|
| PIN_DS_SOLAR | D5 | Pin of temperature sensor (DS18B20) for solar storage |
| PIN_DS_POOL | D6 | Pin of temperature sensor (DS18B20) for pool water |
| PIN_RELAY_POOL | D1 | Pin to connect relais for pool pump |
| PIN_RELAY_SOLAR | D2 | Pin to connect relais for solar pump |
{{% alert note %}} TODO: improve PIN usage (see https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/) {{% /alert %}}
In my environment I use the USB to power the ESP8266 via small USB-Power-Adapter andan additional 230V power plug to be used as source for the power of the pumps which are switched via the relais.