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The TK50 at an angle: two cream-coloured transducer cans with square-mesh fronts standing on a black board with a gold border, lonely binary and open-source is love printed behind them, a sound-wave symbol between them, ULTRASONIC DISTANCE SENSOR along the bottom edge above four header pads, and a right-angle four-pin header's pins reaching out past that 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/tk50
You have this

Ultrasonic Distance Sensor

Distance by echo timing, on an RCWL-9616 that runs from 3 to 5 V and speaks GPIO, I2C, UART or 1-Wire, chosen by two solder jumpers. No divider on a 3.3 V board. Soft and angled surfaces are where it quietly lies to you.

Supply
3–5V, no divider needed
Range
2cm to about 3 m
Accuracy
±1cm under a metre
Interfaces
GPIO, I2C, UART, 1-Wiretwo solder jumpers pick one
Start here · 01 What the echo measuresOpen the board in 3D

Turn it over and pick a mode: all four holes in GPIO, I2C and UART, three in 1-Wire, where TRIG carries everything and ECHO is left empty. Nothing sits between the chip and the header, so VCC is your board's logic voltage.

Product questions & answers ↓

The whole handbook11 articles · 55 minQuick referencePDF · 470 KBModel (GLB)GLB · 2.2 MBCAD (STEP)ZIP · 2.0 MBTransmitter datasheetPDF · datasheet.lcsc.comReceiver datasheetPDF · datasheet.lcsc.comPinout and specsThe pin table, and the questions people ask first
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Product questions

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Ultrasonic Distance Sensor

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Need another
Comes in this kit — not sold separately
TinkerBlock Ultrasonic Distance Sensor Kit
Order or missing parts?

Email us or reply to your order, and quote tk50 — 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.