Posts: 7
Joined: Sat Nov 12, 2011 10:27 pm
Contact: Website

Re: Projector-based Computer

Sun Nov 13, 2011 2:11 pm

I plan on creating a projector-based computer which will have the following key components:

~$35 - RaspberryPi (Model B)
~$370 - Microvision SHOWWX+ HDMI Laser Pico Projector (Or an equivalent projector)
~$10 - Camera Module

The plan is to allow for gesture recognition... if this doesn't pan out, USB keyboard FTW.

Estimated Cost: ~$420 (Shouldn't cost more than this)

I'm hoping to find a cheaper projector which will be compatible with the RPi...

Posts: 55
Joined: Thu Jul 28, 2011 11:21 am

Re: Projector-based Computer

Sun Nov 13, 2011 2:48 pm

Something that may help you out with this is a look at the Wiimote project. This is an open-source project that harnesses the tech inside a Wiiremote to create an interactive whiteboard for very little money.

Posts: 7
Joined: Sat Nov 12, 2011 10:27 pm
Contact: Website

Re: Projector-based Computer

Sun Nov 13, 2011 4:00 pm

Thanks! I'll be sure to check it out.

One thing I do want to do (after creating this) is to create a wearable see-through display. The software with this project should easily translate to the new display. I'm basically trying to create something like this (someday in the future): http://www.microvision.com/wea.....obile.html

Posts: 1
Joined: Fri Sep 09, 2011 12:27 am

Re: Projector-based Computer

Sun Nov 13, 2011 6:41 pm

I actually have a similar idea in mind. http://info.ee.surrey.ac.uk/Pe.....l/tld.html looks promising for motion tracking and gesture recognition, but the octave-based port isn't working yet, so it currently won't run on ARM. (Unless Matlab has an ARM version that I'm not aware of...)

Posts: 30
Joined: Tue Jan 03, 2012 11:18 pm

Re: Projector-based Computer

Fri Jan 20, 2012 7:36 am


Depending on price this is the perfect Pi interface.  Especially if the keyboard is bluetooth (which Linux already has down pat).  The screen is HDMI.

Though I must admit to being enamoured of the idea of a pico-projector screen and one of these keyboards:


Welcome to the future.
Raspberry Pi (Raspbian) Tutorials by a fellow noob:

User avatar
Posts: 1015
Joined: Tue Oct 18, 2011 11:38 am

Re: Projector-based Computer

Fri Jan 20, 2012 10:03 am

See some great demo's with mini projector/camera set-ups, would be excellent.


I was thinking about similar things, but wondering about real budget ways to do it.

So far I was thinking a few IR proximity sensors to mimic a basic dpad/mouse plus two action buttons, would be enough for menu driven interface.

As for display...driving a LCD Alphanumeric display but would be nice to project it somehow though (would need to take it apart without it breaking to put a suitable backlight on).

Otherwise, possible to use some persistence LED (POV) type trick, but would need some way for it to move it etc. Still that's all the fun!
A Magazine for Raspberry Pi Users
Read Online or Download for Free.

My new book: goo.gl/dmVtsc

Meltwater's Pi Hardware - pihardware.com

Like the MagPi? @TheMagP1 @TheMagPiTeam

Posts: 6
Joined: Fri Jan 20, 2012 3:02 pm

Re: Projector-based Computer

Fri Jan 20, 2012 8:40 pm

I would like so see this running on a raspberry pi.

Posts: 29
Joined: Mon Sep 19, 2011 4:11 am

Re: Projector-based Computer

Sat Jan 21, 2012 11:37 am

The Showwx+ is an excellent device because all pixels are in focus thanks to the scanning laser. So when projecting onto uneven, or curved surfaces, the image is always in focus. But it puts out only 15 lumens.

If the image does not need to always be in focus, then also consider the similarly priced AAXA P3 projector. 1024x600 at 50 lumens. LED based. (Twice as thick)


Posts: 7
Joined: Sat Nov 12, 2011 10:27 pm
Contact: Website

Re: Projector-based Computer

Thu Mar 08, 2012 3:19 am

I've ordered my RPi... late because I did not receive an email saying it was available ... I should get mine around April - May.

I've bought a used Microvision SHOWWX+ HDMI Laser Pico Projector for ~$250 from amazon. Since its output is only 15 lumens, I've changed the project a little bit... I plan on creating augmented reality glasses. I'm not sure how well this will work (waiting for the projector to arrive so I can play around with the idea), but on paper it looks good. The projector's "infinite focus" feature is a must for it to work.

Worst case scenario, I'll go back to the original plan.

Posts: 1
Joined: Wed Aug 22, 2012 9:03 pm

Re: Projector-based Computer

Wed Aug 22, 2012 9:05 pm

I see this post is one year ago :) just wanna ask if gesture recognition projects worked on Raspberry pi or not

Return to “Other projects”