Lonely Binary
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The TK89 at an angle: a black board with rounded corners and four round holes, a steel-framed colour screen showing lonely binary and a row of colour bars, a blue strip along the screen's left edge, eight right-angle pins out of the left edge labelled BL, RST, DC, SCL, MO, CS, 3V3 and GND, and lonely binary up the right 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/tk89
You have this

1.8-inch TFT Display

A 1.77-inch colour TFT, 128 by 160 pixels, with an ST7735S controller on SPI, on a TinkerBlock board with an eight-pin header. 3.3 V only, with nothing on the board to shift 5 V signals down: an Uno goes through a TK97. The backlight stays off until BL is driven HIGH.

Pixels
128 × 16016-bit colour
Screen
1.77inches, sold as 1.8
Logic
3.3 Vonly; an Uno needs a TK97
Talks
SPIwrite-only, plus CS, DC, RST
Start here · 01 The eight pinsOpen the board in 3D

Turn it over and see the eight holes: five go straight to the panel's ribbon socket, BL to the transistor that keeps the backlight dark until it is HIGH, and 3V3 and GND to the panel. The two solder jumpers are beside them, both open.

Product questions & answers ↓

The whole handbook10 articles · 50 minQuick referencePDF · 385 KB1.8-inch TFT model (GLB)GLB · 1.6 MB1.8-inch TFT CAD (STEP)ZIP · 2.6 MBST7735S datasheetcrystalfontz.comPinout and specsThe pin table, and the questions people ask first
Community

Product questions

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

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1.8-inch TFT Display

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Need another

Not on general sale yet. Reply to your order and we will sort out a spare — quote tk89.

Order or missing parts?

Email us or reply to your order, and quote tk89 — 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.