Lonely Binary
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The TK115 at an angle: a black board with a gold border, the tiny square SC7A20H chip between two round mounting holes with small resistors, capacitors and an LED around it, a drawing of a falling figure at the top, lonely binary up the left edge, I2C at the right, and a right-angle four-pin header along the front edge labelled GND, 3V3, SCL and SDA.
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/tk115
You have this

3-Axis Accelerometer

A Silan SC7A20H accelerometer on a TinkerBlock board: tilt, orientation, shakes and drops over two shared I²C wires, at address 0x19, with the pull-ups fitted. 3.3 V only.

Address
0x19fixed, WHO_AM_I 0x11
Range
±2–16g, four settings
Resolution
1mg a count at ±2 g
Supply
3.3V only, pull-ups fitted
Start here · 01 What an accelerometer feelsOpen the board in 3D

Turn it over and see all four holes wired: SDA and SCL each have a 4.7 kΩ pull-up to 3V3, always connected, and the chip answers at 0x19 because its address pad is left open underneath.

Product questions & answers ↓

The whole handbook11 articles · 50 minQuick referencePDF · 450 KB3-Axis Accelerometer model (GLB)GLB · 1.1 MB3-Axis Accelerometer CAD (STEP)ZIP · 918 KB3-Axis Accelerometer drawing (PDF)PDF · 2.4 MB3-Axis Accelerometer drawing (DXF)ZIP · 144 KBDatasheetPDF · wmsc.lcsc.comPinout and specsThe pin table, and the questions people ask first
Community

Product questions

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3-Axis Accelerometer

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Need another

Not on general sale yet. Reply to your order and we will sort out a spare — quote tk115.

Order or missing parts?

Email us or reply to your order, and quote tk115 — 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.