Pages: [1]   Go Down
Author Topic: Nokia LCD screen wiring help with Uno  (Read 1187 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Full Member
***
Karma: 0
Posts: 134
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I am trying to hook up my Uno with this LCD screen but I dont have a level shifter and I am not understanding the wiring in the below tutorial since it uses a level shifter and I dont have one. It also says in tutorial I can hookup without the level shifter (Arduino Uno has 3 v pin so why not) so can anyone help me with the wiring? I cant figure out how to connect Uno to this LCD with backlight without any level shifter.

I have tried reading various other tutorials but everyone seems to use some sort of chip.



http://ladyada.net/products/nokia5110/
Logged

Essex, UK
Offline Offline
Full Member
***
Karma: 4
Posts: 150
Arduino rocks
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

It also says in tutorial I can hookup without the level shifter
It's talking about the backlight.

Quote
(Arduino Uno has 3 v pin so why not)
Because the Uno GPIO levels that you are going to connect to the display are at 5V.

Quote
I have tried reading various other tutorials but everyone seems to use some sort of chip.
And rightly so. There are other ways to translate levels but an IC offers guaranteed equal propagation delays for all its ports which is important when you're translating the levels of a data bus.

You really should get a level shifting IC...
Logged

Home of the Nokia QVGA TFT LCD hacks: http://andybrown.me.uk

Offline Offline
Full Member
***
Karma: 0
Posts: 134
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

It also says in tutorial I can hookup without the level shifter
It's talking about the backlight.

Quote
(Arduino Uno has 3 v pin so why not)
Because the Uno GPIO levels that you are going to connect to the display are at 5V.

Quote
I have tried reading various other tutorials but everyone seems to use some sort of chip.
And rightly so. There are other ways to translate levels but an IC offers guaranteed equal propagation delays for all its ports which is important when you're translating the levels of a data bus.

You really should get a level shifting IC...

okay fine. If I go to radioshack or w.e do I ask for any level shifting IC or a specific model? sorry I am kind of new to this..
Logged

Essex, UK
Offline Offline
Full Member
***
Karma: 4
Posts: 150
Arduino rocks
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

This is the one you want to ask for:

http://www.hobbytronics.co.uk/74hc4050
Logged

Home of the Nokia QVGA TFT LCD hacks: http://andybrown.me.uk

Offline Offline
Full Member
***
Karma: 0
Posts: 134
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

This is the one you want to ask for:

http://www.hobbytronics.co.uk/74hc4050



i went to the shop today and they had     74HC4050D     74HC4050DR2     74HC4050M and I am not sure which one of these I need to buy.
Logged

Essex, UK
Offline Offline
Full Member
***
Karma: 4
Posts: 150
Arduino rocks
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

It looks like the IC is available in different packages - the suffix, or part of it, indicates the different package types. If you're working with a breadboard then you need a DIP package. The other types are likely to be various surface mount packages.
Logged

Home of the Nokia QVGA TFT LCD hacks: http://andybrown.me.uk

Pages: [1]   Go Up
Jump to: