If you want to add a keypad to your Arduino project, the options are pretty limited. There’s that red and blue 4×4 membrane we’ve all seen in password-protected door lock projects ...

A new accessory from Mobee, which makes some inductive charging accessories for the Magic Mouse and Apple Keyboard, aims to use the Magic Trackpad as a Numpad replacement. The accessory is simply 3 ...

Whenever a button is pressed contact is made between particular row and column. 4x3 Keypad pins can be directly connected to microcontroller i/o port of this board. Figures above: Keypad logic table ...

Once the rows, columns, and other layers were glued up, [Peter] could connect this keypad up to a microcontroller. The code is very easy with the Arduino keypad library, and should stand up to the ...

The Grand Market keypad is an early optional puzzle in Silent Hill 2 that rewards ammo and health items for your trouble. So if you want a little help in the opening hours of the game, we've got ...

You need to enter the correct Nurse's Station keypad code on 2F of Brookhaven Hospital in Silent Hill 2 so you can get the Moldy Radiograph required to solve the X-Ray viewer puzzle. It takes ...

The Grand Market is directly southwest from Big Jay's, on the corner of Neely and Sanders in Eastern South Vale. While its doors are locked, there's a keypad on its side door that requires a 4 ...

Keypad phones, believe it or not, are still in use, and there is a surprising amount of variety to choose from. Some of the phones include 4G connectivity, cameras, and are built to last. If you ...

Keypads are usually arranged in a matrix format to reduce the number of I/O connections. A 12-key keypad is arranged in a 3 4 format requiring 7 connections. A 16-key keypad is arranged in a 4 4 ...

To the back of the store is an open gate players can go through and find a metal door with a keypad. Finding the code for this keypad can be confusing, so here is all you need to know about the ...

The Silent Hill 2 Grand Market keypad code can be found close to the locked door, but you won't that know until you get it. Even then you won't find a lock combination, just a note narrowing down ...

The entrance is all boarded up, but a side entrance will let you enter, if you can figure out the Keypad code. To get a large hint as to what the Keypad solution is, head southeast onto Sanders ...