Building a membrane keypad prototype for Arduino

Membrane keypad is a great input device where you need protection from moist. If you look around you will find that many toys have them. Kitchen, bathroom appliances also may have such buttons. In many areas membrane keypads are replaced by capacitive buttons. Membrane switches are still mechanical device which can wear our or break. If you would like to experiment with membrane switches and probably build something with it, then check out Paul‘s guide on how to build one by yourself. He used a copper foil tape to make a conductive layers of keypad. He designed keypad and its inner layouts with Adobe illustrator. He stacked a 4×4 keypad and connected it to Arduino to give a test. This is perfect for non intense input devices and you can design your own layout and labeling. Continue reading

Interfacing numeric keypads to Arduino

Numeric keypads are great way to add simple human data input in to embedded system. These are very easy to connect and program. Tronixstuff have written a tutorial on how to interface numeric keypad to Arduino and see typed chars on LCD screen. If you follow connection recommendations then you can simply download an Arduino keypad library and start using right away. Continue reading

Arduino – keypad interface

In many embedded projects you need some input device like keypad. You don’t need to mess around by making your own keypad – it is better to use one that looks nice and is reliable. So following project simply interfaces a standard 12 button keypad to Arduino. By using Arduino you even don’t have to write a lot of code as there are libraries available that allows to interact with keypad. By following this tutorial you’ll learn how to read keypad with Arduino and prompt for password via serial terminal. Continue reading