# KeyPad

**URL:** <https://forum.makecode.com/t/keypad/3863>\
**Category:** Maker\
**Created:** [October 12, 2020, 8:28pm UTC](https://forum.makecode.com/t/keypad/3863 "2020-10-12T20:28:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Fish](https://avatars.discourse-cdn.com/v4/letter/f/bc8723/32.png) [@Fish](https://forum.makecode.com/u/Fish)\
**Post date:** [October 12, 2020, 8:28pm UTC](https://forum.makecode.com/t/keypad/3863/1 "2020-10-12T20:28:02Z")

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Need some help. I am trying to program a ADAfruit feather M0 for use with a matrix keypad.

1. For the keypad, I need to scan pins and think I need to write a pin low to read the opposite pins of the matrix. I ham having problems getting the pin back to normal state, not high or low so I can read the other side of the matrix.

2. I need to send over a enter key, but can’t find

> **[CHristapherenese/keypad](https://github.com/CHristapherenese/keypad)**
>
> A MakeCode project. Contribute to CHristapherenese/keypad development by creating an account on GitHub.

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**Author:** ![richard](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/richard/32/5417_2.png) [@richard](https://forum.makecode.com/u/richard)\
**Post date:** [October 13, 2020, 12:26am UTC](https://forum.makecode.com/t/keypad/3863/2 "2020-10-13T00:26:30Z")

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Do you have any details on the keypad you’re using? maybe a part number or tech sheet?

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**Author:** ![Fish](https://avatars.discourse-cdn.com/v4/letter/f/bc8723/32.png) [@Fish](https://forum.makecode.com/u/Fish)\
**Post date:** [October 13, 2020, 1:09am UTC](https://forum.makecode.com/t/keypad/3863/3 "2020-10-13T01:09:41Z")

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Standard 4x4

> **[Membrane 3x4 Matrix Keypad + extras](https://www.adafruit.com/product/419)**
>
> Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of a thin, flexible membrane material with an ...

This is a 3x4

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**Author:** ![Fish](https://avatars.discourse-cdn.com/v4/letter/f/bc8723/32.png) [@Fish](https://forum.makecode.com/u/Fish)\
**Post date:** [October 16, 2020, 2:04am UTC](https://forum.makecode.com/t/keypad/3863/4 "2020-10-16T02:04:20Z")

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Any help