LPD8806 Digital Light Wand + SD Card + LCD

[is0-mick]

Hi Guys,
Someone kindly sent me some LPD8806 strip to create a version of my Digital Light Wand with LCD + SD reader light painting tool.

You can select a bitmap image on the SD card using the LCD display, and then send it to the strip.

If anyone wants the code, its available here:
http://pastebin.com/ueJhzQbK

Some pictures of it in action
http://www.flickr.com/photos/68646769@N ... otostream/

Mick

[is0-mick]

I’ve now added the Gamma Lookup Table that I came across in one of the LPD8806 examples, which seems to do a better job of converting 8bit RGB values to 7bit RGB due to the way our eyes work!

Previously I was just bit shifting, but the Gamma lookup helps produce an image that looks more comparable to the input image.

The image produced by bitshifting seemed to lack a little contrast and seemed too bright.

I’ve uploaded a picture to flickr produced with the new code so you can compare.

New code is now here:
http://pastebin.com/NbgLWdNF

Mick

[larryp61]

Hello is0-mick,
Do you have a schematic for the project? Like how to attach the sd, lcd and buttons? Thanks

[larryp61]

Sorry didn't know there was prebuilt shield for this.

[tbitson]

What shield are you using?

[is0-mick]

Just a one I picked up from ebay.
If you search for arduino lcd keypad, it should bring it up.

Here is a video of it on youtube.
http://www.youtube.com/watch?v=Mh-LZx1As4E


Mick

[owenlab]

Hi Mick, it's possible to adapte this sketch with the HL1606 strip?
I saw your other code for 1606 strip, but run with LSB file and i need a sketch that runs with BMP or JPG file...
Could you write a sketch for this scope please?

really thanks a lot

Owen