Keyestudio ESP32 - 5. Test Result; 6. Knowledge Expansion

ESP32 Starter Kit
(continued from previous page)
}
5. Test Result
After connecting the wiring and uploading code, open serial monitor to set baud rate to 9600, and the analog value will
be displayed, within the range of 0-4095.
6. Knowledge Expansion
We will control the brightness of LED via a potentiometer. As we know, it is influenced by PWM. However, the range
of analog value is 0-4095 while that of PWM is 0-255. Thus, a “map(value, fromLow, fromHigh, toLow, toHigh)”
function is needed.
Wiring Diagram
8.5. Arduino Project 115