Displaying Videos and Images on 4Dsystems uOLED Serially

[astanapane]

as from the display,

it is small but very nice. You can use it in small projects and text is visible.

For my project i need the 3,2 inch display. I know it is expensive but i have to use the touch also.

regards,

[astanapane]

you can see here my video.



i will post the code later on. It is based on the code you provided with a small changes.

Regards,

[astanapane]

i have noticed that when i power the system with only one 5 volt regulator, it gets very hot.

The regulator is about 1Amp. Is it possible to get so hot?

I think that the pic16f88 the Display and the RFID - 12 does not get more that 700 mA.

As from the datasheet of the Dipslay, the minimum is 500 mA. Is that means that the backround is black color?

There is also an option to program the display for low power and sleep mode.

[Ioannis]

What is the input voltage to the 5V regulator?

Suppose it is 12V. Then 12-5=7 volts drop on the regulator.

With a 0,7A current this gives a 0,7 x 7= 4,9 Watts of heat on the regulator. Too much! That is why it gets hot.

Here is a very good link to calculate heat sinks. Read it all as it has very good points.

http://sound.westhost.com/heatsinks.htm

To quickly end with your problem, put the regulator on a large aluminium heatsink,say 4x4x2 cm or lower input voltage to 8 volts.

Ioannis

[astanapane]

Hi Ioannis,

i will try to drop the input voltage to see what will happend.

You are right, the input voltage at the moment is 12V. Which means that we have drop of 7V.

The current though from the display is too high. I dont understand why for this kind of small lcd.

I will also try a heatsink.

thanks a lot.

[rmteo]

For my project i need the 3,2 inch display. I know it is expensive but i have to use the touch also.

I have one of the 3.2 inch displays that I no longer need. Let me know if you are interested.

[astanapane]

yes i am.

please pm me for the price please

[astanapane]

apart from that (High heat on the voltage regulator), is there anyone that manage to use the display off command?

when i used the command, i managed to power off the dipslay. But i couldnt powered up again. It seems it doesnt work.

As from my measurements, the current of the circuits is 1,3 A. This is too much.

Only the display gets about 0,7A to 0,8A when you use all the pixels in white color. (very bad).

That's why it is needed to use the power off comands.

Regards,

[Ioannis]

Maybe there is a sleep command?

Power off means that it may not communicate again, as it is ... off!

Ioannis

[astanapane]

hi Ioannis,

there is a sleep command but i think it does not turn the display backlight off.

I will try it and keep you updated.

Regards,

[astanapane]

what i have noticed is:

when you use the sleep mode ($5A) it turns off only display like a clear lcd command.

when you use the display off command $59 it completes shut down the display.

i managed to turn on the diplsay again. I'm happy but still the program has a lot of bugs, because i dont know if this procedure is safe for the display.

what i mean:

first i initialize the display by the command $55 which is also the autobound.
this has to be paused for approximatelly 200ms or more. I have put it on 1000 ms.

Then after all i use commands to display pictures.

The first picture is the logo.

In order to shut down the display, i use the $59,$00 inside the gotosub logo, and then i turn off the display.

Then when i use a tag to RFID reader, inside the tag_found command i use the command $59,01 to turn on the display.

i will upload a video so you understand what i do. Do not panic for my bugs.....i know there are a lot but have in mind that i'm not a programmer and i dont know how to use the interrupt command at all.

thanks for understanding.

[astanapane]

here is the video of what the $59,$00 command does