How to connect DHT22 and Soil Monitor

Dear all,
How do I connect a DHT22 SKU (018-DHT22) and Soli Moisture SKU (SEN0114) on a breadboard?
On an Arduino Uno R3 Borad.
Kind Regards,

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Hi Mendel, Welcome to the forum :slight_smile:

The first thing you will need to check is the pinout of all three devices. The pinout for your Arduino can be found here: The Full Arduino Uno Pinout Guide [including diagram]
The soil moisture sensor has an analog output signal and can run on 3.3V or 5V, so it’s easiest to connect its 3 wires to the 5V pin for power, The Analog to Digital Converter 0 input (ADC0) for signal, and the ground reference connected to the ground pin. I’ve highlighted these three connections in the diagram below.

Your soil moisture sensor cable has a female header socket output (the same as the Arduino sockets) so I’d recommend connecting it with prototyping wire like these: Jumper Wires - Connected 6" (M/M, 20 pack) Australia


Hi Mendel,

Just following up for the other DHT22 sensor, we have a tutorial on connecting one to an Arduino available here:


Thank you for your assistance.