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The TK38 at an angle: a black board with a gold border and a blue DHT11 sensor cage with a grid of square vents lying flat across its top, two round mounting holes, DHT11 printed under the cage, GND, VCC, NC and DATA over four pads, a small resistor, lonely binary up the left edge, SINGLE WIRE up the right, and a right-angle four-pin header out of the front 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/tk38
You have this

DHT11 Temperature and Humidity Sensor

A DHT11 on a TinkerBlock board, the TK38: temperature from 0 to 50 °C to ±2 °C and humidity from 20 to 80 % to ±5 %, in whole numbers, 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: the pull-up ties DATA to it.

Temperature
±2°C, 0 to 50 °C
Humidity
±5% RH, 20 to 80 %
Wires
3GND, VCC, DATA
Supply
3 to 5.5V; use your logic voltage
Start here · 01 Two numbers, one pinOpen 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 · 40 minQuick referencePDF · 395 KBDHT11 block model (GLB)GLB · 930 KBDHT11 block CAD (STEP)ZIP · 738 KBDatasheetPDF · cdn-shop.adafruit.comPinout and specsThe pin table, and the questions people ask first
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DHT11 Temperature and Humidity Sensor

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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 tk38 — 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.