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If you stumble across any bugs, feel free to leave an issue or even better - a pull request. 🙂
Unless noted otherwise, all information applies to the latest release.
Example hardware requirements:
- ESP8266 (D1 Mini)
- I²C-LCD-Display with 4x20 characters (HD44780 2004 with I²C Backpack)
- 4 Breadboard jumper wires (Dupont, Female-Female)
- a soldering iron (if I²C backpack or pin headers on the D1 Mini are not soldered, you can get both presoldered!)
1. Electronics:
The electronics are very simple here as we use the I²C backpack on the display. If the I²C board has not yet been pre-soldered to the actual display, solder it! The same applies to the pin headers on the D1 Mini. Then all you have to do is connect everything with the Dupont cables as shown in this table:
Pins to be connected:
| I²C Backpack | D1 Mini | other ESP8266 |
|---|---|---|
| GND | "G" or "GND" | |
| VCC | 5V | |
| SDA | D2 | GPIO4 (SDA) |
| SCL | D1 | GPIO5 (SCL) |
The result should then look something like this:
2. Changing config files, compiling and flashing:
- Please check out this wiki-page for installation instructions!
3. Are you wondering what the display is showing?
- For more information about different screens this wiki-page will help.
4. Be happy and stare at your display to watch the power flows. And of course don't get mad about you solar system. 😉