Comments on: Interfacing PC keyboard to AVR microcontroller

By: farhan bashir zia

farhan bashir zia — Wed, 28 Jul 2010 07:09:42 +0000

hi, i want to interface the keyboard to my 80C52 microcontroller for my moving message display. please i need a c code to connect the keyboard with microcontroller. plz help… thanx

By: abhishek

abhishek — Sat, 03 Jul 2010 07:19:55 +0000

thanx 4 d article
i need to interface using atmega8l
in assembly language
can u pls send me d coding…….
at abhishek_mtv@yahoo.com

By: Julkahendri

Julkahendri — Fri, 18 Jun 2010 01:17:14 +0000

Hi, i want get data from PC keyborad and Display to 7 segment, you have program asambling?
please help me..
send me at julkadoank@gmail.com
thanks

By: beni

beni — Thu, 06 May 2010 10:41:34 +0000

i’d like to use keyboard in messsage display without pc using basic langguage. could you help me?

By: eirini

eirini — Sat, 20 Sep 2008 14:49:24 +0000

hi! im trying to do the same project but in assembly. If anyone have it done and would like to share it , it would be helpful!

Thanks in advance. Any offer is welcome!

By: dewi

dewi — Wed, 09 Jul 2008 07:44:34 +0000

Dear Mr. or Mrs..
i have tried this program but i couldn’t compile or make it. An errors said that there’s no pgmspace.h and ina90.h header in this program. And at scancodes header, it said that it needs array.. i don’t know where’s the problems, and i ask you to give me advice to solve this problems..
thank you..

By: dE_jana

dE_jana — Sat, 07 Jun 2008 16:33:47 +0000

dear scienceprog..
this is a good article,thank’s a lot.
i’m using AVR ATMEGA8535 for displayed character on dot matrix.
since i try to running C language program that you’ve made. it seems i found error. i cannot find header called ‘pgmspace.h’.where i can find that header?
please help me scienceprog,thank’s for your attention.

By: harris

harris — Sat, 05 Apr 2008 21:55:35 +0000

Very good job.Im impressed
I would like to help me connecting my ps2 keyboard in stk500(AVR atmega16 mcu) and make my leds flash when i stroke a key . The board has 8 leds but i think i’ll need 11 to present the 11 bits. Any idea? Or i will make except portD and portB as output? In assembly would be nice. Ihave avr studio to connect with stk500.
Thanks

By: kooshall

kooshall — Fri, 04 Apr 2008 02:37:12 +0000

Hi how to use this code in ave studio 4, and is it possible to use a usb to ps/2 converter (ie usb keyboard instead ps/2)

thanks

By: Big Mess o’ Wires » Keyboarding

Big Mess o’ Wires » Keyboarding — Sat, 23 Feb 2008 17:52:35 +0000

[...] It turns out that only four of the pins on the PS/2 connector are used by the keyboard, and two of those are power and ground. The other two are data outputs generated by the keyboard when a key is pressed. No data needs to be sent to the keyboard, so the interface is very simple. The two data outputs from the keyboard are clock and data, both normally high. When a key is pressed, the clock signal pulses low 11 times, and the data signal sends 11 bits of data in sync with the clock. Bits 1-8 are the scan code data byte. Bits 0, 9, and 10 are start, parity, and stop bits, and can be ignored. More data details can be found in this write-up of interfacing a PC keyboard to a microcontroller.Â [...]