Objective:
HTU21D is a temperature/humidity sensor with IIC port, voltage 3.3V. In this project, we will use Arduino to get temperature/humidity data from this sensor and display the values to serial terminal.
Parts and Devices:
Arduino UNO R3 x 1
USB cable x 1
Breadboard and jumper wires
HTU21D sensor module
10k ohm Resistor x 1
Circuit Graph:
Sample code:
#include
#define HTDU21D_ADDRESS 0x40 //Unshifted 7-bit I2C address for the sensor
#define TRIGGER_TEMP_MEASURE_HOLD 0xE3
#define TRIGGER_HUMD_MEASURE_HOLD 0xE5
#define TRIGGER_TEMP_MEASURE_NOHOLD 0xF3
#define TRIGGER_HUMD_MEASURE_NOHOLD 0xF5
#define WRITE_USER_REG 0xE6
#define READ_USER_REG 0xE7
#define SOFT_RESET 0xFE
byte sensorStatus;
void setup()
{
Serial.begin(9600);
Serial.print
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