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Can I power a monitor from 5 volts?

even if I have to open it up can I run this on 5v using a buck converter or by modding the screen? The screen is a RCA DRC69702 that came with a dvd player and all I want to is power it freom a two port battery. one port will be hooked up to the monitor and one to the raspberry pi.

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jschlager10 months ago

i know this is an old thread but I was able to convert the DRC69702 to 5v. See picture to see how. You will need to disconnect the 7vcc lead going to the display controller board then connect 5v after the 5v regulator. I connected the 5v source directly to the regulator output.

IMG_20160615_223110.jpg

Sorry, the answer is the same as your question in October

https://www.instructables.com/answers/how-do-I-make...

Sorry, can't be done. Not enough power available, unless you have a convenient >>5A 5V supply.

nerd7473 (author)  steveastrouk3 years ago

http://www.ebay.com/itm/7-inch-LCD-Screen-Driver-Display-Board-Monitor-for-Raspberry-Pi-HDMI-VGA-2AV-New-/221388853541?pt=LH_DefaultDomain_0&hash=item338bcdd125

found a different screen it said 5~24v input so it might just work though if it does I would need to make a enclosure

That's a neat unit. The leds along take ~170mA though.

nerd7473 (author)  steveastrouk3 years ago

ok I think it will work if I plug it into a 5v 1a battery pack with two ports one for the screen and one for the pi

Have you found a power consumption figure then ? I couldn't see one in the datasheets only "TBA"

nerd7473 (author)  steveastrouk3 years ago

no, I was just stating what my plan was for hooking up power...

did I already give you the screen link for a different display that might work?

http://www.ebay.com/itm/7-inch-LCD-Screen-Driver-Display-Board-Monitor-for-Raspberry-Pi-HDMI-VGA-2AV-New-/221388853541?pt=LH_DefaultDomain_0&hash=item338bcdd125

The monitor would work with 5v 1-2a correct?

I couldn't see that 1-2A in the data. If you've found it, go for it.

Why is it so vital it runs on 5V ?

I couldn't see that 1-2A in the data. If you've found it, go for it.

nerd7473 (author)  steveastrouk3 years ago

actually was just guessing the amperage didn't see it on the sheet either

nerd7473 (author)  steveastrouk3 years ago
nerd7473 (author)  nerd74733 years ago

and a one amp battery?

9.Output: 5V=2A,9V=1.5A,12V=1A

So, no. You can't get enough ENERGY from the source.

nerd7473 (author)  steveastrouk3 years ago

but the label had said that it would run on 9-12v at 1a with 2.5a max. I honestly just want a screen to run on five volts for my pi. I also want it to be 7" diagonal

http://www.ebay.com/itm/5V-9v-12v-Dual-USB-Power-Bank-6x18650-Battery-Charger-Box-for-iPhone-5S-5-Note-3-/301064905968

nerd7473 (author)  nerd74733 years ago

at five volts

nerd7473 (author)  steveastrouk3 years ago

I must agree with Steve 9 to 12 volts 1 amp up from 5 volts depending on the efficiency of the supply 3 to 5 amps is a lot more than a USB and a lot of computer power supplies are made for.

Even 1 amp 12 volt AC to DC adapters are hard to get but if you can get one it is your best bet to power your screen.

You could use a slow charge charger from your USB to a built in rechargeable battery then run the screen from the battery however you would need a auto shutdown for when the battery is low.

nerd7473 (author)  Josehf Murchison3 years ago

I looked up the display's manual it takes to much power for 1 of the 5 to 12 volt step up power modules three can handle it unfortunately most computers USB outputs can't. The module is 5 watt 2 amp peak current output it will only take that for a moment, the screen is 12 watts.

nerd7473 (author)  Josehf Murchison3 years ago

hmm what if it is a two port battery one for the pi one for the screen

Are you using a power pack or a computer to power it?

If your computer can handle the load and you are using that module you need 4 ports. 3 for the 3 modules in parallel needed to power the screen and one for the pi.

nerd7473 (author)  Josehf Murchison3 years ago

I may just go "screen hunting" to find the right one with high resolution

Which ever way you go good luck.

nerd7473 (author)  Josehf Murchison3 years ago

ok thanks

nerd7473 (author)  Josehf Murchison3 years ago

I am going to use a power pack for the pi and the adapters off of a hub so I could possibly run it

bwrussell3 years ago

5V is enough to power 2 LEDs in series. I'd be shocked if you found a screen that was useable @ 5V. You're also going to be limited by current, monitors draw a fair bit. Is it a Li-ion?

nerd7473 (author)  bwrussell3 years ago
nerd7473 (author)  bwrussell3 years ago