The soft keypad 5-pack: a flexible membrane keypad with blue number keys and red A to D, star and hash keys, four smaller keypads and five small black adapter boards below it, and the teal I2C MATRIX KEYPAD KIT box.

You have thissoftkp

I2C 4x4 Matrix Membrane Keypad, 5 Sets

A 4×4 keypad on two I²C wires instead of eight GPIO pins. The TK85 adapter, the soft and heavy-duty keypads, the two keymaps they need, and how to put two on one bus.

In the box: 5 + 5keypads + adapters
Signal wires: 2SDA + SCL
Supply: 3.3 / 5V, your board's
Address: 0x20as shipped

Start here · 01 Sixteen keys, eight wires The reference

Product questions & answers ↓

The whole handbook11 articles · 50 min DatasheetPDF · ti.com Pinout and specsThe pin table, and the questions people ask first

Community

Product questions

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

Ask a question ↗

I2C 4x4 Matrix Membrane Keypad, 5 Sets

Loading discussions…

View all on the community ↗Read here. Sign in to the community to post or reply.

Need another

I2C 4x4 Matrix Membrane Keypad, 5 Sets

Buy direct Buy on Amazon

Order or missing parts?

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