PROJECTION BOMBING

Step 8 ALT. SET UP: NO CAR / DEEP CYCLE

A more proper method of powering electronics from a battery is to use a deep cycle marine battery. Deep cycle batteries, unlike car batteries, are designed to provide continuous power for a longer duration. They will definitely outlast car batteries in deep cycle applications ( http://www.uuhome.de/william.darden//carfaq7.htm#differences ). Use this in combination with an AC power inverter to power your projection system without need for a car or city provided lamppost. If you use a 250 watt projector and a 100 Ah battery you should be able to project for 2 - 5 hours. You can use a battery charger to recharge the battery. You can put the battery, inverter and projector in a large rolling luggage bag and pull it around the city from location to location.

Connecting to a deep cycle battery is the same as connecting to a car battery and all the same processes from the tutorial and inherent dangers still apply.

MATERIALS:

• 12 Volt 100 Amp Hour Sealed Lead Acid Battery
• 10amp Deep-Cycle Battery Charger

Currently we are testing with a West Marine SeaVolt 12V Deep-Cycle 90, and a West Marine 15A Amp Battery Charger. More to come on this setup soon.

Comments

[robot.ranermann]

Alright, so I plan to get a 4000 lumen projector, a 12v 100amp deep cycle battery and a 2000w ac power inverter. Do I need a secondary battery? I really don't want to use a car but would a generator work? Or am I ok with those three items.

Also, would a 100mw green laser damage my camera? I guess I should ask about cameras.... what's a good (and cheap) camera for this?
Thanks

[tristantech]

A 100AH battery will last 36 minutes:

100AH / (2000W / 12V) = ~0.6 Hours

0.6*60 = 36 min

Adding a secondary battery in parallel will increase capacity.
Using a generator would work, but it will be noisy.

A 100mw laser will damage an unprotected camera. I have seen 100mw lasers burn thin plastic.

[Mama Joy]

I do dvd presentations in rural Kenya and most often I am at venues that are off-road. I need a battery to power my set-up that is not too heavy.

I have the following equipment:

A Sony 2000 lumen lcd projector. On the back plate it says:100 - 240 volts/ 2.4 - 1.0 amps, 50/60Hz.

An Armco DVD-DX600 dvd player. On the back it says: AC 240 volts -50Hz -25W

An AMPEX AX575MS amplifier. On the back it says:

18W+10W*2(RMS)
P.M.P.0.1000w, Impedence 4(OHM)

Frequency response: subwoofer amplifier: 20hz-20hz; satellite amplifier 100hz-20Khz; subwoofer speaker:20hz-300hz; satellite speaker 100hz-20khz; separation: >45dB; S/n ratio >75dB

What’s the total load?

What size battery do I need to run this rig?

 Do I need a marine battery?

 A deep cycle battery?

[mjrodriguez]

Why don't you try by using some cell phone projector?   any chinese brand...

[wattermelon]

IS this legal? Can you get hassled or harassed by the man for doing simple projections (given that your material is not of the offensive type)?