You have a function today that allows to reduce the brightness of OLED screen SSD1306 connected to our Arduino.

We added this code using the Adafruit library:
adafruit/Adafruit SSD1306@^2.5.7 adafruit/Adafruit GFX Library@^1.11.9
We will create a function:
void OledDisplay::brightness(uint8_t level) { display.ssd1306_command(SSD1306_SETCONTRAST); display.ssd1306_command(level); }
We can add values in the following range: 0-255
For level = 255
, all pixels are turned on → maximum brightness.
For level = 127
, approximately half will be lit → medium brightness.
For level = 20
, few points will be lit → very dim.
