DOG LCDs

[TK.]

A new driver is available for DOG displays

A precompiled test application is available in the MIOS Download section, and a schematic here

They are looking sexy, no? :)

And these are btw. the fastest LCDs I ever tested! (benchmark result: 1.61 mS!)

And the power consumption of the backlight is extremely low, so that the 7805 of a core module doesn't get hot.

Backlight colour and display variant can be freely combined - just select the colours you like.

(I'm using a "EA DOGM163S-A" with black background, combined with the white backlight "EA LED55X31-W"

There is enough space under the LCD to stuff some additional components, like a "DINX1":

Sideview:

Only Drawback I've noticed so far: currently no displays with 20 characters per line are available - it would be the ideal solution for MBSID V2. And two displays could be combined to a 40 column display.

For applications which don't rely on special sizes, like MB64, MB64E, MBCV, etc... these displays are recommented from my side to everybody, who wants to give his MIDIbox frontpanel a special touch :)

Best Regards, Thorsten.

[nILS]

Nice :D This make nILS very happy, I've been waiting for this for too long! Awesome!

[stryd_one]

Ahh I do love these!

Has anyone ever asked if they can do a run of 20 character displays? maybe we would be lucky :)

Edit: nILS you shoulda just asked, I had a driver half written about two years ago when smash put me onto these :)

It's just the 16 char thing that stopped me.... darnit :(

[/tilted/]

Has anyone ever asked if they can do a run of 20 character displays? maybe we would be lucky :)

Or maybe a 55 character version??

(MBLC)

[buhler]

Has anyone ever asked if they can do a run of 20 character displays? maybe we would be lucky :)

20 characters would be lovely, i'm scared of my PLED's now because Wilba keeps telling me they're gonna break soon.... :(

[moogah]

Wow, these have alot of good things going for them!  PCB mount, smaller footprint, better availability of colors (Full RGB Backlights!!!)..

Hopefully they become popular and we see more sizes and models released!

[diablojoy]

;D just the thing have just tried to to order 3 each of these eadogm162s-a with ealed55x31-rgb

soselectronics in slavakia only place i could find that had them in stock and small quantities min USD 100 ORDER

will have to wait and see how i go http:/www.soselectronic.com will post on result

[diablojoy]

recieved dog lcd's today

international postage costs damn expensive USD $75

but they were ok to deal with and soselectronics were still the cheapest place i could find

even taking the postage into account

postage cost was included in the min order price

of USD $100 cheers  ;D

[philetaylor]

These dog displays look great!

If anyone is interested, I have found a supplier in the UK called mmselectronics.

I also notice that there are also 128x64 and 128x32 graphic modules available now, it would be really good if they worked with MB, they use the sam SPI interface as the character ones so hopefully it is possible.....

http://www.mmselectronics.co.uk/lcdgraphicdog.htm

Phil

[stryd_one]

There's no driver yet, but it is possible.

Thanks man, how much are they from this distro you found?

[philetaylor]

The one-off price for the 128x64 is £12.49 and £8.70 for the 128x32, you also need a socket which costs £0.84 and a backlight, £2.98 for amber going up to £14.18 for RGB!

The 3x16 character displays are also available at £5.14 each

Phil

[TK.]

It should be possible to write a driver for DOG GLCDs, but I don't own such a display, accordingly I cannot support it

Best Regards, Thorsten.

[philetaylor]

Hi all.

I have now written a driver (well hacked one together) for these displays....

I have also written an SPI based driver for the 16x3 character LCD's. Technically it should be possible to have up to 8 of either the character or graphic displays. I was thinking about looking at combining the two into one driver but I don't think that MIOS allows mixing of GLCD/CLCD?

Anyway here is a picture of the GLCD, it is 128x64, I went with the amber backlight although there are many other options just like the CLCD version.

You will notice that it requires 8x 1uF capacitors, this removes the need for a high voltage supply for the LCD.

Once I have sorted out and tidied-up the driver, I will commit it.

Cheers

Phil 

p.s. Apologies for the crap picture, I hadn't realised how difficult it is to take a picture of an LCD!!!

IMG_0166.JPG

IMG_0166.JPG

[philetaylor]

Here is a slightly better picture!

[stryd_one]

Sweeeet.

I have also written an SPI based driver for the 16x3 character LCD's.

I am still racking my brain to figure out how a driver that requires about 8 times the number of instructions to write the same data, can be faster? Buh?!

[philetaylor]

I know, here are the figures from lcd_benchmark

DOG CLCD: 1677 *8 *100 nS = 1.34mS!

DOG GLCD: 4481 *8 *100 nS = 3.58mS!

I did manage to get a 1541 by removing most of the delay but I started to get problems so this is about the best I could get....

Phil

[ultra]

beautiful!

[Sasha]

Very nice. And pretty fast!  :)

[TK.]

Phil: the MIOS32 driver is working as well:

(display + touch panel donated by Ultra :))

Best Regards, Thorsten.

[philetaylor]

Phil: the MIOS32 driver is working as well:

Brilliant. Did you have to change much to get the driver working??

EDIT: btw, what capacitors did you use???

[TK.]

The display output was working immediately, there was only a minor issue in the APP_LCD_Clear() routine (6 lines cleared instead of 8 )

Best Regards, Thorsten.

[philetaylor]

Nice  :)

I have also written a driver for the DOG clcd using SPI, it seems quite a bit quicker than the parallel driver so do you think it is worth committing? If so what should I call it? dog_spi ?

It would be useful if people wanted to use more than 2 of them.

Cheers

Phil

[TK.]

Yes, would be nice if you could add this driver as well. "dog_spi" sounds ok

MIOS: In order to select the display, just add a "USER_LCD_Select" function (with exactly this name) to the driver, it would make it compatible to clcd_multi

MIOS32: the function to select a LCD device is already part of MIOS32, the LCD number is stored in mios32_lcd_device. This function is only used for CLCD drivers, as we need to address the displays separately once special characters should be initialized. GLCD drivers usually allow to combine multiple displays to a big screen without any restrictions, so that a device selection isn't required.

Best Regards, Thorsten.

[TK.]

The MIOS32 based DOGM touchpanel driver

Best Regards, Thorsten.

[ultra]

tk and phil: thank you!

i'm really looking forward to being able to get what i want out of my live controller.  this is gonna rock.

for those who don't know:  this is for a $15 touchpad that can be attached to the low cost DOG character lcds (the m size) available at mouser.

so now we all have the ability to put touchscreens on our midiboxes for x/y pads and menus. :)