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Conundrum
Sat Feb 06 2016, 05:27AM Print
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Hi all.
I came up with this after watching the latest "Mission Impossible"...

How about setting a challenge which seems impossible but can be done with someone who has enough skills in the art of kludge-fu, circuit herding and the Dark Arts.

For example, making a projector that fits into a Pi Zero, costing less than £20 but has a sensible resolution and only uses the same amount of power that is available from the 5V on the mini HDMI connector itself.
It doesn't have to work all the time just when triggered from software.
Bonus points if it recycles old hardware people would never think could possibly be used in this way.
No cheating using wireless power unless the Pi somehow supplies it, or using a pre-charged battery.

Pics soon smile
If anyone wants to attempt such a mind boggling feat, they have until midnight on Februrary 29th to present a Youtube video of their completed hardware and software via dropbox or other service.

Prize is as usual a box of goodies which has indeterminate mass, sent by SD/etc.

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jdub1581hv
Sat Mar 05 2016, 06:13AM
jdub1581hv Registered Member #55219 Joined: Tue Jun 09 2015, 11:21PM
Location:
Posts: 80
It's too late, and I don't have any unused ones around, but a fairly simple way would be to use a small LCD from cell phone etc.., few mods to the casing, and you can use it as a projector..
Problem comes with getting the right driver for the lcd, as many of those are not easily salvaged.. But if brave enough to try, go for it..
Just wanted to share..
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Conundrum
Tue Mar 08 2016, 03:34PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Yeah, I had an idea similar to use a colour lcd from a camera evf, but run the rgb drives from a single output and use phase sequential colour.
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jdub1581hv
Tue Mar 08 2016, 04:02PM
jdub1581hv Registered Member #55219 Joined: Tue Jun 09 2015, 11:21PM
Location:
Posts: 80
When looking up random lcd's and how to interface with them I found a vid showing the hack... Thought it interesting, then saw this post... :)
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Conundrum
Sat Mar 19 2016, 03:19PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Intriguingly I found the camera this screen was pulled out of.
I think its basically a 1st gen micro LCD probably analogue, B/W but has a white LED backlight and polarizing sheet on its front.
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