The TK21 at an angle: a long black board with a gold border, a low black thumb joystick with a round dished cap on the left, a right-angle six-pin header along the top edge labelled KEY, Y, X, BTNS, 3V3 and GND, two small red buttons at the bottom middle, four square black buttons in a diamond on the right, a mounting hole in each corner, and lonely binary in gold in the middle.3D
You have thistk21

Slim Joystick

A thumb stick and six buttons on one long TinkerBlock board, on six pins. X and Y are two potentiometers, read on analog pins; KEY is the click under the stick, LOW at rest and HIGH when pushed; and all six buttons share BTNS, one analog pin, through a ladder of 10 kΩ resistors that gives each its own voltage. One button reads at a time.

Buttons
6on one analog pin
Stick tilts
16degrees each way, X and Y
Wire
6pins, no NC
Board
62.4 × 30.4mm, wider than a block

Turn it over and see the six holes: KEY, Y, X, BTNS, 3V3 and GND. X, Y and BTNS are analog, KEY is digital, and all six buttons share the one BTNS pin.

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Slim Joystick

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Need another

Not on general sale yet. Reply to your order and we will sort out a spare — quote tk21.

Order or missing parts?

Email us or reply to your order, and quote tk21 — 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.