Thread: DIY – Wireless USB monitor

Originally Posted by HiJackZX1

I don't like to kill ideas, but once I started to work on this project, I thought it would be cool in the beginning. Then issues came up that I didn't like. First off passing the thing around seems mediocre. Second is having to recharge it. I would have to haul it out my car every time to recharge the battery. Third, it was just easier to simply add more screens to my install, built into the car. Now everyone has their own dedicated screen. Only thing I can see this being good for is for presentation, say your at a car meet and not everyone wants or can fit in the car, then you pull that out and what not.

I see where your coming from, after looking at the cost of a standard li-ion charger, this project is not gong to be anywhere near cheap. this is starting to be a long term goal, mostly for use at car shows, meets, etc.

once built, charging would be a huge issue. idealy, I would like to use a ipod plug, mostly because ipod chargers and acc. easy to come by. but the reality is that it will probably use a cig. lighter adapter.

also, getting everything in a small, easy to handle package is going to involve alot of creative thinking/rearranging. even if I were to use the mimo screen, I still have to fit a battery, usb hub, possibly a charger, and assorted cables, without it becoming extremly heavy..

instead of a laptop battery could i use this

http://www.batteryspace.com/li-ion18...gedisplay.aspx

and if i used this would i be able to use this to charge it

http://www.bestbuy.com/site/Powermat...ive%20charging

and i was wondering if this would work

http://www.instructables.com/id/Wood-Induction-Charger/

i was thinking the above because i could make a locking mech and it would add to the security of the car. no one would see the screen and want to steal it. it would just be wood....

the biggest problem with lipo's is that they are a more sensitive to charging, and over-discharging, and most are expensive--that pack you linked to is $125!!

i'll post some of the ideas i have been coming up with here--

all lipo packs not only need to be charged carefully--just search youtube for a charging lipo pack blowing up--if charged wrong, they could take your house/car with them... anyways, the multi cell packs also need to be ballanced, and this is primarily why the packs and chargers are normally so expensive.

but, i have found a solution for it! e-flight, a rc plane/heli company has a super small, 3 cell balancing charger, for cheap-- it retails on their websit for about $30:
http://www.bladehelis.com/Products/D...rodID=EFLC3115

i have also found 3 cll batteries for cheap(another $30)--
http://www.amazon.com/1000mAh-11-1V-...0128057&sr=8-3

so that would get you a a pack and a balancing charger for about $60-70!

the problem though is to keep everything compact, the carger is going to have to stay external, and the battery will need some slimming mods done to it(assuming that they could even be done)-- that pack is huge when your trying to stick it to the back of a 7" screen...