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เซ็นเซอร์วัดอุณหภูมิ วัดความชื้น ความแม่นยำสูง GY-213V-SI7021 Digital High Precision Temperature and Humidity Sensor Module
Must use 3v3 for Vin
Precision Relative Humidity Sensor ± 3% RH (max), 0–80% RH High Accuracy Temperature Sensor ±0.4 °C (max), –10 to 85 °C 0 to 100% RH operating range Up to –40 to +125 °C operating range Wide operating voltage (1.9 to 3.6 V) Low Power Consumption 150 μA active current 60 nA standby current Factory-calibrated I2C Interface Integrated on-chip heater 3x3 mm DFN Package Excellent long term stability Optional factory-installed cover Low-profile Protection during reflow Excludes liquids and particulates Applications: HVAC/R Thermostats/humidistats Respiratory therapy White goods Indoor weather stations Micro-environments/data centers Automotive climate control and defogging Asset and goods tracking Mobile phones and tablets Size: 1.3*1cm/0.51*0.39" ตัวอย่าง Code si7021 กับ Arduino โดยไม่ใช้ Library #include <Wire.h> const int ADDR =0x40; int X0,X1,Y0,Y1,Y2,Y3; double X,Y,X_out,Y_out1,Y_out2; void setup() { Serial.begin(9600); Wire.begin(); delay(100); Wire.beginTransmission(ADDR); Wire.endTransmission(); } void loop() { /**Send command of initiating temperature measurement**/ Wire.beginTransmission(ADDR); Wire.write(0xE3); Wire.endTransmission(); Serial.print("Temp"); Serial.print("\t"); Serial.println("Humidity"); /**Read data of temperature**/ Wire.requestFrom(ADDR,2); if(Wire.available()<=2); { X0 = Wire.read(); X1 = Wire.read(); X0 = X0<<8; X_out = X0+X1; } /**Calculate and display temperature**/ X=(175.72*X_out)/65536; X=X-46.85; Serial.print(X); Serial.print("C"); Serial.print("\t"); /**Send command of initiating relative humidity measurement**/ Wire.beginTransmission(ADDR); Wire.write(0xE5); Wire.endTransmission(); /**Read data of relative humidity**/ Wire.requestFrom(ADDR,2); if(Wire.available()<=2); { Y0 = Wire.read(); Y2=Y0/100; Y0=Y0%100; Y1 = Wire.read(); Y_out1 = Y2*25600; Y_out2 = Y0*256+Y1; } /**Calculate and display relative humidity**/ Y_out1 = (125*Y_out1)/65536; Y_out2 = (125*Y_out2)/65536; Y = Y_out1+Y_out2; Y=Y-6; Serial.print(Y); Serial.println("%"); delay(300); Serial.println(); delay(1000); }   |
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Exchange or return policy
Every item comes with a 30-day warranty. However, there are certain conditions that apply:
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The customer should not be responsible for any self-inflicted damage, such as incorrect power connections (for example, supplying 5V instead of the required 3.3V for a sensor).
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The product must be in perfect condition, without any breakage or damage caused by electricity (e.g., short circuits leading to electrical fires).
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The store does not accept product exchanges due to customer misunderstandings, such as purchasing the wrong size for their project or buying something without eventually using it. Customers can inquire about the product details and ensure compatibility before making a purchase by contacting us through our Line account @modulemore during business hours. Please note that there may be delays in response between 12:00 PM and 2:00 PM.
Return Policy: To initiate a product return, customers must provide the original receipt or a copy for quick verification. Returns can be sent to our store address by following these guidelines:
- Provide a detailed description of the damaged item(s).
- Mention any tests or experiments conducted by the customer.
Please note that the store reserves the right to make the final decision regarding product replacement or refund.
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Arduino compatible board, Iot, ESP32, ESP8266, Nodemcu, Raspberry pi, micro:bit and etc.
Mobile number : 0831710868
E-mail : paheyisoicus@gmail.com
E-mail : paheyisoicus@gmail.com
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