Button Control Modules with ESP32
Introduction
We did a lot of experiments, and for each one we needed to re-upload the code, so can we achieve different functions through an experiment? In this experiment, we will use an external button module to achieve different functions.
Components Required
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ESP32 Board*1 |
ESP32 Expansion Board*1 |
Keyestudio DIY Purple LED Module*1 |
Keyestudio Button Module*1 |
Keyestudio Rotary Potentiometer*1 |
Keyestudio Obstacle Avoidance Sensor*1 |
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Keyestudio Line Tracking Sensor*1 |
Keyestudio DIY Joystick Module*1 |
Keyestudio HC-SR04 Ultrasonic sensor *1 |
Keyestudio DIYCommon Cathode RGB Module *1 |
Keyestudio XHT11 Temperature and Humidity Sensor *1 |
Keyestudio ADXL345 Acceleration Sensor*1 |
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MicroUSB Cable*1 |
3PDupont Wire*6 |
4PDupont Wire*3 |
5PDupont Wire*1 |
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Wiring Diagram
Test Code
//**********************************************************************
/*
* Description : Multiple sensors/modules work together
* Auther : http//www.keyestudio.com
*/
#include "xht11.h"
#include "adxl345_io.h"
//ADXL345 sda-->21,scl-->22
adxl345 adxl345(21, 22);
//xht11 to gpio15
xht11 xht(15);
//rgb is connected to 4,0,2
int ledPins[] = {4, 0, 2}; //define red, green, blue led pins
const byte chns[] = {0, 1, 2}; //define the pwm channels
int red, green, blue;
//Rocker module port
int X = 35;
int Y = 34;
int KEY = 32;
//Potentiometer pin is connected to analog port 33
int resPin = 33;
//Trace sensor pin connected to IO port 14
int TrackingPin = 14;
//LED is Connected to GP5
#define PIN_LED 5 // the pin of the LED
#define CHAN 3
//Obstacle avoidance sensor is connected to GP27
int Avoid = 27;
//Ultrasonic sensor port
int Trig = 13;
int Echo = 12;
//Key module port
int button = 23;
int PushCounter = 0;//Store the number of times a key is pressed
int yushu = 0;
unsigned char dht[4] = {0, 0, 0, 0};//Only the first 32 bits of data are received, not the parity bits
bool ir_flag = 1;
float out_X, out_Y, out_Z;
void counter() {
delay(10);
ir_flag = 0;
if (!digitalRead(button)) {
PushCounter++;
}
}
void setup() {
Serial.begin(9600);//Set baud rate to 9600
pinMode(KEY, INPUT);//Button of remote sensing module
ledcSetup(CHAN, 1000, 12);
ledcAttachPin(PIN_LED, CHAN);
pinMode(button, INPUT);//The key module
attachInterrupt(digitalPinToInterrupt(button), counter, FALLING); //External interrupt 0, falling edge fired
pinMode(Avoid, INPUT);//Obstacle avoidance sensor
pinMode(Trig, OUTPUT);//Ultrasonic module
pinMode(Echo, INPUT);
adxl345.Init();
for (int i = 0; i < 3; i++) { //setup the pwm channels,1KHz,8bit
ledcSetup(chns[i], 1000, 8);
ledcAttachPin(ledPins[i], chns[i]);
delay(1000);
}
}
void loop() {
yushu = PushCounter % 8;
if (yushu == 0) { //The remainder is 0
yushu_0(); //rgb displays
} else if (yushu == 1) { //The remainder is 1
yushu_1(); //Displays the high and low levels read by the tracking sensor
} else if (yushu == 2) { //The remainder is 2
yushu_2(); //Display temperature and humidity value
} else if (yushu == 3) { //The remainder is 3
yushu_3