Description
Five 16-key soft membrane keypads, each with an I2C adapter that cuts the wiring from eight pins to two. For PIN entry, menus and control panels.
Highlights
- Two signal wires. The PCF8574-based adapter reads the 4x4 matrix over I2C, on SDA and SCL.
- Stick-on mounting. Adhesive backing fixes each keypad to a panel, enclosure or desk.
- 3.3 V or 5 V. Runs at your board's logic voltage.
- Five complete sets. A keypad and an adapter for each project, plus a storage box.
In the box
- 5 × 4x4 soft membrane keypad, adhesive back
- 5 × I2C adapter with 8 right-angle pins
- 1 × storage box
Specifications
- Keys: 16 (4x4 matrix)
- Interface: I2C via PCF8574 adapter
- I2C address: 0x20 as shipped
- Supply: 3.3 or 5 V
Works with
Arduino, ESP32 and other microcontrollers with an I2C keypad library such as Keypad_I2C.
Questions
Switches
I2C 4x4 Membrane Keypad + Adapter, 5-Pack
SKU B0G2KZW8KX
$19.99incl. tax
In stock · ships within one business day
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3+ items5% off$18.99 USD each
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Free shipping over $35
- Ships worldwide
- 30-day returns
- 12-month warranty
Frequently bought together
What's in the box
parts, each with its own handbook
Tap any part for its wiring, example code for Arduino and MicroPython, and a 3D model you can turn over.
Stuck? Ask the people who made it
Email office@lonelybinary.com with your setup and what it is doing. Our product team answers within 24 hours.
