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Delivery time approx. 5 working days
- Manufacturer: Adafruit
- Order number: EXP-R15-549
- Manufacturer part number: 1824
- Availability: 0
- country of origin: CN
- HS code: 85423990
- Weight (kg): 0.03
This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of plastic with... more
This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of plastic with sturdy plastic buttons. The keys are connected to a matrix so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad.
There's a great Matrix Keypad Arduino library that should work great with this item with minor adjustments. It's basically a sturdier version of our Membrane 3x4 Matrix Keypad and comes with 7 header pins pre-soldered on for easy plugging. Starting from the left there are three column pins, and then to the right are the four row pins.