Fingerprint Sensor AS608 - A Beginner's Guide
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
read tutorial →The Temperature and Humidity Sensor DHT22 Module is a temperature and humidity sensor with digital output designed for climate logging, weather nodes, and room monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Temperature Range: -40-80℃ / resolution0.1℃ / error <±0.5℃; Supply Voltage: 3.3V to 5V DC; Interface: Digital GPIO.
| Product | Sensor style | Standout |
|---|---|---|
| Temperature and Humidity Sensor DHT22 Module | temperature and humidity sensor with digital output | Current item |
| Temperature and Humidity DHT11 Sensor | temperature and humidity sensor | digital output, humidity sensing |
| Temperature Humidity Sensor HDC1080 | temperature and humidity sensor with I2C | digital output, humidity sensing |
| Temperature and Humidity Capacitive Digital AM2302 DHT22 Sensor | temperature and humidity sensor with 1-Wire | SPI interface, analog output |
This sensor is a good fit for weather stations, room monitors, greenhouses, incubators, and climate data loggers.
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.
Useful add-ons include probe mounts, thermal paste if needed, and a data logger, depending on how you plan to power, mount, and log the sensor.
| Product | Temperature and Humidity Sensor DHT22 Module |
|---|---|
| Temperature Range | -40-80℃ / resolution0.1℃ / error <±0.5℃ |
| Humidity Range | 0-100%RH / resolution0.1%RH / error±2%RH |
| Supply Voltage | 3.3V to 5V DC |
| Size | 38 x 20mm |
| Wiring map | VCC,GND,S |
| Interface | Digital GPIO |
| Category | thermal heat temperature sensors |
Connect power and ground, then wire the output pin to a digital GPIO input. Check whether the module uses active-high or active-low logic in your code. Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.
1 × Temperature and Humidity Sensor DHT22 Module
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One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
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read tutorial →Share what you built. Photos, BOM, what worked, what didn't.
view thread →Symptom + what you tried + clear photo = answers within hours.
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