Sht30 temperature and humidity sensor transmitter RS485 high precision industrial grade modbus waterproof high temperature dustp
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Customer reviews
5
N
N***i
Color: Model 2, Logistics: AliExpress Standard Shipping
It works!
Here is some Arduino code to read the sensor, using a RS485 to TTL MAX485 Module:
#include
byte modbusAddress = 0x01; // The sensor's modbus address, or SlaveID
const int DEREPin = 7; // The pin controlling Recieve Enable and Driver Enable on the RS485 adapter
modbusMaster modbus;
void setup()
{
Serial.begin(9600);
pinMode(DEREPin, OUTPUT);
Serial3.begin(9600, SERIAL_8N1); // we use Serial3 to connect to the RS485 adapter
modbus.begin(modbusAddress, Serial3, DEREPin);
}
void loop()
{
uint16_t hresult = modbus.uint16FromRegister(0x03, 0x0000, bigEndian);
float humid = (float)hresult / 10;
int16_t tresult = modbus.int16FromRegister(0x03, 0x0001, bigEndian);
float temp = (float)tresult / 10;
Serial.print("humidity=");
Serial.print(humid);
Serial.print(" temperature=");
Serial.println(temp);
delay(2000);
}
July 05, 2021
A
A***r
Color: Model 1, Logistics: AliExpress Standard Shipping
It works properly. The sensor reacts very quickly to temperature and humidity variations. It incorporates a green Led inside the plastic housing that blinks when sending data, use to check once mounted on your site, which works well.
It does not include any instructions, the only information available is the one on this web and it is in Chinese, you need to use a translator to understand something.
September 01, 2021
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