Lonely Binary
AccountCart
The TK39 at an angle: a black board with a gold border and a large white DHT22 sensor cage with a grid of square vents lying over its right half, four sensor leads soldered beside it, DHT22, GND, VCC, NC and DATA printed on the left, SINGLE WIRE and TEMPERATURE HUMIDITY along the bottom, -40°C TO 80°C, 0-100% RH beside the cage, and a right-angle four-pin header out of the left edge.
VR

View it in VR

This board opens in a VR headset: life-size, or big enough to stand beside, with every pin and every part named where it sits. Open this address in the browser on a headset such as Apple Vision Pro or Meta Quest.

learn.lonelybinary.com/vr/tk39
You have this

DHT22 Temperature and Humidity Sensor

A DHT22 on a TinkerBlock board, the TK39: temperature from −40 to 80 °C to ±0.5 °C and humidity from 0 to 100 % to ±2 %, in tenths, on one data wire. The 10 kΩ pull-up is fitted, so it is three wires and one library. Feed VCC what your board's pins run at, and read it no more than once every two seconds.

Temperature
±0.5°C, −40 to 80 °C
Humidity
±2% RH, 0 to 100 %
Wires
3GND, VCC, DATA
Supply
3.3 to 6V; use your logic voltage
Start here · 01 DHT11 or DHT22Open the board in 3D

Turn it over and see the three holes to wire: GND, VCC and DATA. NC reaches nothing, and the 10 kΩ pull-up on DATA ends at VCC, so VCC is your board's logic voltage.

Product questions & answers ↓

The whole handbook9 articles · 45 minQuick referencePDF · 360 KBDHT22 block model (GLB)GLB · 1021 KBDHT22 block CAD (STEP)ZIP · 917 KBDatasheetPDF · sparkfun.comCodeZIP · 1016 BPinout and specsThe pin table, and the questions people ask first
Community

Product questions

See what other owners have asked, and read their solutions.

Ask a question ↗

DHT22 Temperature and Humidity Sensor

Loading discussions…

View all on the community ↗Read here. Sign in to the community to post or reply.
Need another
Comes in this kit — not sold separately
DHT Sensor Kit: 3 × DHT22 and 3 × DHT11
Order or missing parts?

Email us or reply to your order, and quote tk39 — that identifies the product. If something is missing from the bag, your order is the record of what shipped.

Take it with you

Point a phone camera at the code and this page opens there. It is the same address as the one printed on your box, so it is also what to show someone you are passing the board to.