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, Ships from Canada
Please note: Arduino Nano, Breadboard, Raspberry Pi, LCD display and are NOT INCLUDED. Don't need a keypad? Click here. What is the One Pin Keypad? One Pin Keypad makes using a matrix keypad so muc...Read More…
Please note: Arduino Nano, Breadboard, Raspberry Pi, LCD display and 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 it's 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.
Dimensions: (L) 23 mm x (W) 15 mm x (H) 11.5 mm (Quarter for scale)
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