DHT11 - Humidity and Temperature Sensor - ElectroDragon

Specification: Dimension 28mm*12mm*10mm Main chip DHT11 huminity sensor Voltage: DC 5V Digital output Humidity Range: 20—90%RH Humidity  accuracy: ±5%RH Temperature range: 0—60℃ Temperature accuracy: ±2℃ Temperature and humidity measurements are a nice addition to many hobby projects. But [Rajendra Bhatt] makes the point that many of these sensors have a price tag that is well above what most hobbiests […].
Specification: Dimension 28mm*12mm*10mm Main chip DHT11 huminity sensor Voltage: DC 5V Digital output Humidity Range: 20---90%RH Humidity  accuracy: ±5%RH Temperature range: 0---60℃ Temperature accuracy: ±2℃ Temperature and humidity measurements are a nice addition to many hobby projects. But [Rajendra Bhatt] makes the point that many of these sensors have a price tag that is well above what most hobbiests are willing to spend. He decided to take an in-depth look at the DHT11 sensor; which you can get your hands on for under $1.6 if you know where to look. The four-pin device uses a 1-wire protocol. [Rajendra] discusses the ins and outs of the communications, demonstrating the part using a PIC 16F628. It’s a snap to connect to your project, requiring VCC, GND, and a pull-up resistor on the single data line. We’ve already seen it used on at least one project, and hope to see more of this little guy in your own hacks. Documentations: DHT library from arduino Hackday description page  Read all the codes on this wiki page. Buck order price $1 for more than 50pcs order, price will automatically update in the cart page.

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