Overview
Grove-Temperature & Humidity Sensor Pro is a high accuracy temperature and humidity sensor based on the DHT22 module (also known as AM2302 or RHT03). High-cost performance and high precision make it ideal for temperature and humidity monitoring of Arduino and Raspberry Pi, you can also use it to make a thermometer and hygrometer.
The DHT22 includes a capacitive humidity sensor and a high precision temperature sensor. The range of humidity sensor is 0 to 99.9 %RH with ±2% accuracy while the temperature sensor ranges from -40 to 80℃ with ±0.5℃ accuracy. With the help of a built-in 8-bit microcontroller, the DHT22 converts the analog output of those two sensors to the digital signal, and output both temperature and humidity data via a single pin.
Compared with the DHT11, this product has higher precision and wider measurement range, but the usage and code are almost the same. Simply put, if you need higher measurement accuracy, this product will be a better choice.
Tech specs
|
Item |
Min |
Norm |
Max |
Unit |
|
VCC |
3.3 |
- |
6 |
V |
|
Measuring Current Supply |
1 |
- |
1.5 |
mA |
|
Standby Current Supply |
40 |
- |
50 |
uA |
|
Measuring range (Humidity) |
5% |
- |
99% |
RH |
|
Measuring range (Temperature) |
-40 |
- |
80 |
°C |
|
Accuracy(Humidity) |
- |
- |
±2% |
RH |
|
Accuracy (Temperature) |
- |
- |
±0.5 |
°C |
|
Resolution (Humidity) |
- |
- |
0.1% |
RH |
|
Resolution (Temperature) |
- |
- |
0.1 |
°C |
|
Repeatability(Humidity) |
- |
- |
±0.3% |
RH |
|
Repeatability (Temperature) |
- |
- |
±0.2 |
°C |
|
Long-term Stability |
- |
- |
±0.5% |
RH/year |
|
Signal Collecting Period |
- |
2 |
- |
S |
|
Respond Time 1/e(63%) |
6 |
- |
20 |
S |
Get Inspired
Display real-time meeting room availability, synchronized with Google Calendar through Arduino IoT Cloud.
Watching back a slideshow of some of your favorite times of the past years is a great way to reflect on what’s happened and get excited for the future. The Electronic Cats crew wanted to incorporate this concept into a more simplified, interactive form which resulted in the Garrita project. Garrita is a homemade platform that lets an Arduino GIGA R1 WiFi with GIGA Display Shield transform into a highly mobile slideshow thanks to its larger onboard memory capacity and convenient layout. This year, the Electronic Cats were able to take their image shifter concept even further with Michi: an existing project that turns any conductive object into a capacitive touch-sensing controller. Whenever one of Michi’s inputs are toggled, the board sends a signal to the GIGA R1 WiFi that causes the current slide to advance to the next one. In order to go from a locally stored image to something on the Display Shield, users first transform their images into a more suitable format via the LVGL conversion tool. Once downloaded, the resulting files can be easily bundled into a Sketch before they become accessible in the application code. To see more about how the Electronic Cats built Garrita, you can read their write-up here on Hackster.io.
