Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

4x4 keypad question on pulldown resistors

Status
Not open for further replies.

HommerSimpson

New Member
Im making a 4x4 keypad out of an old remote. Should I put pull down resistors on it or is this something that some chips need and some dont ? Very New to all this.
Thanks Greg
 
if you are using the following configuration of 4x4 keypad - **broken link removed** - there is no need of pull up/down resistors since the pins are all connected to the microcontroller.
 
right now im connecting to a at89c51. But in the future it will be PIC chips... I still have to order some.. just got pickit 3 in mail... so im playing with parts and peaces & making things..
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top