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Keypad - 12 Button

3.45
A basic 12 Button Keypad. The buttons are setup in a matrix format and it has 7 output pins used to indicate which of the 12 buttons is being pressed.

Availability: In Stock.

Code1+
4611 £3.45
(£4.14 incl VAT)
OR

A basic 12 button keypad for user input. The buttons are setup in a matrix format. This allows a microcontroller to 'scan' the 7 output pins to see which of the 12 buttons is being pressed. 

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Posted by Arthur C, Tuesday, 8 July 2014 on product Keypad - 12 Button
  • 0
    vote
    A: The PICAXE-20 Project Board - Product Code: 3718 This also needs the PICAXE-20M2 IC Product Code: 3728 And a PICAXE USB Download Cable -Product Code: 3716 It is powered by 4.5V (4xAA batteries) but there is no battery cage included so that is item 4xAA battery Cage with Clip Stock Code: 2235-01 Alternatively you could use an Arduino or Arduino clone: RedBoard - Programmed with Arduino Product Code: 4681 Arduino Uno Main Board -R3 Product Code: 4622 Both of these can be powered and programmed by USB. The Uno uses USB Cable A to B Product Code: 4109 The Redboard uses USB Type-A to Micro-B USB Cable Product Code: 4125
    Posted by Aaron Sturman on Tuesday, 8 July 2014
Posted by Connor Taylor, Tuesday, 10 June 2014 on product Keypad - 12 Button
  • 0
    vote
    A: A link on the data sheet says the contact limit is 24VDC and 20mA. You are unlikely to be using anything as high as 24V but I would be very careful to limit the current through the keypad. It would be very easy to put more than 20mA through the contacts unknowingly and that might damage the keypad.
    Posted by Aaron Sturman on Tuesday, 10 June 2014

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Ask Kitronik Using PIR Sensor..
Video Using A PIR Sensor & Keypad In An Alarm
A video about using a PIR Sensor and a keypad in an alarm taken from our Ask Kitronik Live event 2012.
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