Control brightness using smartdisplay button widgets.
- SmartDisplay with RS485/Modbus interface
- Arduino (Uno or Mega2560)
- RS485 shield for Arduino (https://www.dfrobot.com/product-1024.html)
- RS485 dongle
- ModbusMaster (Install using Library Manager)
Reference GUI design for 3.5":
| Widget ID | Type | Style | Pos X | Pos Y |
|---|---|---|---|---|
| 0 | Button | 3 | 180 | 160 |
| 1 | Button | 2 | 100 | 160 |
| 2 | Number | 1 | 100 | 160 |
| 3 | Text | 4 | 100 | 160 |
Please note that only Widget ID and Type matters. You are free to change other attributes.
