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Home / MISC Areas / Mattel JuiceBox
juicebox montage
issues related to linking multiple juicebox images

New Messagejuicebox montage (modified 0 times) eveneye
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someone made a post about powering multiple juicebox units for a montage. I'm doing the same thing (3x3), so I decided to create a thread to address all the other things that might come up in this project.

1)slideshow- I noticed images will load at different speeds depending on the complexity of the image, for instance, a white image is going to load much faster than one filled with random noise. This presents a problem because the images wont be in sync. My solution is to have the juicebox array trigger the next picture using a relays. Relays could also be used to navigate to the slideshow on startup. Is there an easier/cheaper solution than using relays?

2)removing the interface- Ideally, I dont want to see the juicebox logo or interface at startup. The easiest solution would be to use a relay to turn off the backlight until the slidshow starts, but you can still kinda see the pictures. Ideally, there would be a relay on the power of the lcd itself. I got a link to this screen from the juicebox wiki http://www.giantplus.com.tw/22-lcd_module_gpg24164is1.html It says the power is on pin 8. It would be easiest to break the lead on the main pcb but given how the cord is all twisted, I'm not sure exactly which one is 8, and that assumes this pinout is the same for the juicebox! anyone know?

3)splitting images- i can whip up a photoshop script for this in no time, so making images fit the montage should be a breeze, just watch your nomenclature

4)controller hardware- right now im prototyping with a basic stamp 2, but ill probably finish off with something cheaper like a pic, anyone else interested should post what theyre using so we can share code.

09-10-2006 18:45:11

New MessageRE:juicebox montage (modified 1 times) eveneye
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now that i've laid out all the technical stuff, i wanted to throw out some creative uses ive thought of for doing this.

-audio/midi/sensor controlled- i think it would be cool to trigger different images or change the speed/patterns in the montage based on external input, it could work with sound, like a crazy ipod dock, or be part of a midi controller, or maybe just be triggered by an IR/sonar sensor to trip out anyone walking by.

-changing landscape- if you had a landscape, you could have different things going on in different parts of the montage, including ghetto >> animation. this could work along with sensors/input to create an interactive piece.

-juicebox cube- with 6 of these going for $25 on overstock, its worth trying to create a picture frame cube thing. the images could all show different views of a lanscape or something, so it would be like looking into a 3d world. wooooo....

-midi gui- i spend a lot of time building midi controllers, and having a color lcd display information is very helpful. For instance, One lcd could display a list/grid of effects for a given song, and a second screen could display which knob/slider controls which parameter. A microcontroller could move to the right screen based on input (although expect a slight delay). Its kinda cheesy, but for the price theyre going for, its not a bad value.

anyone else got any ideas?

09-10-2006 18:56:36

New MessageRE:juicebox montage (modified 0 times) jasonharper
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There shouldn't be any difference in loading speed based on image complexity - the .JBP format has no compression, it's exactly 57600 bytes of data that is simply copied into RAM, regardless of what the picture looks like. However, you're going to need external control of the buttons anyway, to start the slideshow at exactly the same time on all units, Relays would work, but it should be possible to drive the button signals directly from a microcontroller (assuming that it's running at 3.3V, just as the Juicebox circuitry is).

The backlight current almost certainly passes thru the big power resistor on the PCB - at least, I can't think of any other reason why such a resistor would be present. That would give you a much more convenient place to break the circuit in order to hide the startup logo & interface. Relays would be more reasonable here, since more current is involved than any microcontroller can directly deal with, however MOSFET transistors would be smaller and noiseless.

09-10-2006 19:11:17

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