Pages: [1]   Go Down
Author Topic: LCD displays with pixel control?  (Read 1194 times)
0 Members and 1 Guest are viewing this topic.
London
Offline Offline
Full Member
***
Karma: 0
Posts: 168
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

From what I've seen so far, the LCD displays I've found are generally character-based.  Are there any affordable (under £40) LCD displays that allow me to send pixels?  Basically I want a graphical display, with graphs etc, not just text.

Is there such a thing in a simple-to-use package, or will I have to stump for a £50+ device like these ones from Active Robots?
Logged

Current Projects: Rodentometer - Hamster Endurance Moni

Arlington, MA, USA
Offline Offline
Sr. Member
****
Karma: 0
Posts: 259
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Maybe something here will strike your fancy:

http://www.adafruit.com/category/63
Logged

London
Offline Offline
Full Member
***
Karma: 0
Posts: 168
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Ooh hello smiley Some of those look good.  I'll keep digging and try to find a UK supplier for some of those, at least I know what to search for now.
Thanks.
Logged

Current Projects: Rodentometer - Hamster Endurance Moni

Arlington, MA, USA
Offline Offline
Sr. Member
****
Karma: 0
Posts: 259
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

You're welcome. Good luck, and have fun!
Logged

London
Offline Offline
Full Member
***
Karma: 0
Posts: 168
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Before I start looking too deeply at supplies, is there anything particularly Arduino-specific to watch out for?  What worries me is that some specify that a certain amount of buffer RAM is required.
Logged

Current Projects: Rodentometer - Hamster Endurance Moni

London
Offline Offline
Full Member
***
Karma: 0
Posts: 168
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Ignore that last - it's lazy and RTFM-worthy smiley  I'll dig about here and on the interwebs a bit first
Logged

Current Projects: Rodentometer - Hamster Endurance Moni

London
Offline Offline
Full Member
***
Karma: 0
Posts: 168
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I've been looking at the Graphical Display section of SK Pang, and they have a couple of interesting devices there that might fit the bill.

There is one, the "Graphic LCD 128x64 STN LED Backlight", which claims to "utilize the extremely common KS0108B parallel interface chipset".

The other is the "Serial Graphic LCD 128*64 (ST7565/67 ctrl)".

Are these going to be relatively simple (whatever that might mean smiley-wink ) to get going on my Arduino Uno?  From what I've seen on the forums, the KS0108B will eat up a LOT of pins (13), but I might be able to mitigate that with some serial-to-paralel schenanigans.

They also have a "Graphic LCD Serial Backpack" that might solve that pin problem for me, by exposing a simpler serial interface.

Any advice, tips, clues or corrections greatfully accepted smiley

(PS. I assume it's okay to post loads of links to a commercial site like this, if it's in specific context of questions?  If not give me a smack and I'll desist in future)
Logged

Current Projects: Rodentometer - Hamster Endurance Moni

Seattle, WA USA
Offline Offline
Brattain Member
*****
Karma: 638
Posts: 50331
Seattle, WA USA
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
PS. I assume it's okay to post loads of links to a commercial site like this, if it's in specific context of questions?
It is, if you are posting in the appropriate section of the forum. This section is for discussion of products and services that members can provide. Since this is not the context of your postings, they belong in Project Guidance.

A serial LCD will be the easiest to connect to the Arduino. One wire for power, one for ground, and one wire to send data to the LCD. If you need to get data from the LCD, and it provides any mechanism for doing that, a 4th wire is needed. The data out and data in lines connect to digital pins - 0 and 1 if you want to use Serial to talk to it (not recommended) or any two other pins and use NewSoftSerial to talk to it.
Logged

London
Offline Offline
Full Member
***
Karma: 0
Posts: 168
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Aha, I'll put my purchasing q's in with my project stuff next time then smiley

I've stumped up for one of the serially-interfaced displays, and I shall report back how I get on when it arrives!
Logged

Current Projects: Rodentometer - Hamster Endurance Moni

London
Offline Offline
Full Member
***
Karma: 0
Posts: 168
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I bought a nice SparkFun Graphic LCD Serial Backpack and a Graphic LCD 128x64, which excitingly arrived yesterday.

I got the backpack attached to the screen, and connected to my Arduino, and so far have a nice bright blank screen, but no response to serial comands smiley

Ran out of time then, so no idea what I've got wrong yet.  I rebuilt my robot a bit to make the arduino extractable so I can play with the screen in isolation.  For now assuming I've done something wafty, so will cross fingers and have another stab this evening.  Expect questions smiley-grin

I think it's something to do with using SoftSerial, at 9600, when the backpack defaults to 118000, so I'll tinker about with configuring it using the real serial io pins to talk at 9600.
Logged

Current Projects: Rodentometer - Hamster Endurance Moni

Pages: [1]   Go Up
Jump to: