One Pin Keypad

Name: One Pin Keypad
SKU: 15194
Price: 6.70 USD
Availability: Discontinued

One Pin Keypad makes a typical matrix keypad far easier to wire, much easier to program, and saves you a ton of digital I/O.

Designed by Progetto in Canada

Product Retired

This product is no longer available for sale.

The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.

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One Pin Keypad makes a typical matrix keypad far easier to wire, much easier to program, and saves you a ton of digital I/O.

THIS PRODUCT CAN BE ORDERED WITH A CHOICE OF PRE-SOLDERED HEADERS OR THEY CAN BE INCLUDED SEPARATELY, IT CAN ALSO BE ORDERED WITH A 4X4 MATRIX KEYPAD Please note: Arduino Nano, Breadboard, LCD displa…

THIS PRODUCT CAN BE ORDERED WITH A CHOICE OF PRE-SOLDERED HEADERS OR THEY CAN BE INCLUDED SEPARATELY, IT CAN ALSO BE ORDERED WITH A 4X4 MATRIX KEYPAD

Please note: Arduino Nano, Breadboard, LCD display, ADS1115, and Raspberry Pi are NOT INCLUDED.

What is the One Pin Keypad?

One Pin Keypad makes using a matrix keypad so much easier and lets you reserve your precious I/O pins for other purposes. A 16 button matrix keypad typically requires 8 digital inputs on a microcontroller or single-board computer. The most popular Arduinos limit you to only 14 digital pins, so a 16-button keypad leaves you with only 6 pins for the rest of your project. This resource-shortage may lead to a costly design trade-off or a more costly microcontroller upgrade. The One Pin Keypad module eliminates the need for all of these digital inputs. As its name implies, One Pin Keypad uses only one pin (an analog input) plus GND and VCC connections, so wiring your keypad is a snap! For Raspberry Pi users, it also requires an ADS1115 analog to digital converter, which is also really easy to wire.

One Pin Keypad Dimensions: (L) 23 mm x (W) 15 mm x (H) 11.5 mm (Quarter for scale)

Raspberry Pi Links: Instructables Raspberry Pi tutorial, Python Package