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The TK51 at an angle: a long black board almost covered by a dark four-digit seven-segment display with white segments, a right-angle four-pin header sticking out of the left end, and a round mounting hole at each corner. The 3D model's stock display draws a decimal point after each digit, where the TK51's own display has a colon between the middle two.
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/tk51
You have this

TM1637 4-Digit Display

Four seven-segment digits on two ordinary pins. The TinkerBlock TK51 with its clock colon, the clock set, the digit set with decimal points, and the one bit that behaves differently on each.

Signal wires
2CLOCK + DATA, not I2C
Supply
5V, or 3.3 V; pull-ups to VCC
Digits
0.56inch, with a colon
Brightness
8steps
Start here · 01 Four digits, two wiresOpen the board in 3D

Every pin and part: the TM1637 under the display, the two 10 kΩ pull-ups on CLOCK and DATA, the two capacitors, and the spare pads at the far end that carry the same four signals.

Product questions & answers ↓

The whole handbook13 articles · 60 minQuick referencePDF · 322 KBModel (GLB)GLB · 2.2 MBCAD (STEP)ZIP · 1.7 MBDatasheetPDF · raw.githubusercontent.comPinout and specsThe pin table, and the questions people ask first
Community

Product questions

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TM1637 4-Digit Display

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Need another
Comes in these kits — not sold separately
TinkerBlock 46-Piece Sensor Module KitTinkerBlock TM1637 Segment Display Kit
Order or missing parts?

Email us or reply to your order, and quote tk51 — 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.