Keyestudio ESP32 - 3. Test Code

ESP32 Starter Kit
2. Wiring Diagram
3. Test Code
A water flow light means that LED lights go from left to right and then from right to left. In this experiment, we use
continuous pins, so that “for” statement can be utilized not only to set output mode (replace pins with circular variable
in code) but to output.
/*
keyestudio ESP32 Inventor Learning Kit
Project 6 Water Flow Light
http://www.keyestudio.com
*/
void setup() {
for(int i = 12;i <= 15 ;i++){ //Use "for" loop statement to set IO12-IO15 pin to␣
˓→output mode
pinMode(i,OUTPUT);
}
}
void loop() {
for(int i = 12; i <= 15; i++){ //Use "for" loop statement to light up␣
˓→LED on IO12-IO15 pin in sequence
(continues on next page)
8.5. Arduino Project 61