LPD8806 Digital Light Wand + SD Card + LCD
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LPD8806 Digital Light Wand + SD Card + LCD

by is0-mick on Mon Nov 12, 2012 5:55 am

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
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Re: LPD8806 Digital Light Wand + SD Card + LCD

by is0-mick on Tue Nov 13, 2012 6:32 am

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
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Re: LPD8806 Digital Light Wand + SD Card + LCD

by larryp61 on Fri Nov 16, 2012 11:09 pm

Hello is0-mick,
Do you have a schematic for the project? Like how to attach the sd, lcd and buttons? Thanks
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Re: LPD8806 Digital Light Wand + SD Card + LCD

by larryp61 on Sat Nov 17, 2012 12:23 am

Sorry didn't know there was prebuilt shield for this.
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Re: LPD8806 Digital Light Wand + SD Card + LCD

by tbitson on Sat Nov 17, 2012 8:17 am

What shield are you using?
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Re: LPD8806 Digital Light Wand + SD Card + LCD

by is0-mick on Sat Nov 17, 2012 1:57 pm

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
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Re: LPD8806 Digital Light Wand + SD Card + LCD

by owenlab on Thu Nov 22, 2012 7:50 am

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
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Re: LPD8806 Digital Light Wand + SD Card + LCD

by bigmike3516 on Mon Aug 19, 2013 5:38 pm

Hello Mick,
Do you think You can help me to adapt this sd card read function to my code, Im having serial conflict problems with my bluetooth module. Any help is greatly appreciated. Thanks!
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