VMA345
V. 01
–
10/02/2020
3
©Velleman nv
4.
What is Arduino
®
Arduino
®
is an open-source prototyping platform based in easy-to-use hardware and software.
Arduino
®
boards are able to read inputs
–
light-on sensor, a finger on a button or a Twitter
message
–
and turn it into an output
–
activating of a motor, turning on an LED, publishing
something online. You can tell your board what to do by sending a set of instructions to the
microcontroller on the board. To do so, you use the Arduino programming language (based on
Wiring) and the Arduino
®
software IDE (based on Processing).
5.
Overview
General
The CM2302/DHT22 is a temperature and humidity composite sensor. It uses dedicated digital
module acquisition technology and temperature and humidity sensing technology to ensure
high reliability and excellent long-term stability. The sensor includes a capacitive wet sensor
and a high-precision NTC temperature sensor connected to a high-performance 8-bit
microcontroller, ensuring the product's excellent quality, fast response, anti-interference ability
and cost efficiency. Each sensor is being calibrated in a highly accurate humidity calibration
room.
Compared to the DHT11, this sensor is more precise, more accurate and works in a bigger
range of temperature/humidity, but its larger and more expensive.
Applications
HVAC, dehumidifiers, testing and testing equipment, consumer products, automotive,
automatic control, data loggers, home appliances, humidity regulators, weather stations, and
other related humidity detection control.
Features
•
ultra-low power consumption
•
long transmission distance
•
standard digital single bus output
•
excellent long-term stability
•
high-precision NTC
6.
Connection VMA345 to a VMA100/Arduino
®
UNO
VMA100/Arduino
®
UNO
VMA345
5V
VCC
GND
GND
digital pin 2 (or other one)
DAT
Содержание VMA345
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