Thread: Best way to power the liliput touchscreen?

Use the Opus, I done that, and its working fine.

I ran a line from my Opus in the trunk too. That way it will only receive power when the computer is on.

so just connect the 2 wire from the car cigarette adapter to the +12 and -12 output to the motherboard power supply cable? as in connect the 2 wire to 2 of the wires on the atx block(20 wires), or do i wire it to the opus some other way?

Thanks

Originally Posted by gtd86

so just connect the 2 wire from the car cigarette adapter to the +12 and -12 output to the motherboard power supply cable? as in connect the 2 wire to 2 of the wires on the atx block(20 wires), or do i wire it to the opus some other way?

Thanks

No, you can power the Lilliput monitor directly from the Opus's regulated +12V output without going through the car cigarette adapter. Here's what I did - run two wires (18 AWG) from the Lilliput to the Opus. At the monitor end of the wire, solder a barrel plug (get the correct size) that fits into the monitor's DC in jack. At the Opus end, I soldered the wires into a Y power splitter (+ve to yellow and -ve to black) - the one that has a female connector that plugs into the Opus 4-pin power connector for hard disks and splits into 4-pin hard disk power connectors. This way you can disconnect the wire if you need to bring the PC into the house.

The tricky part is getting the polarity right. Measure the voltage at the barrel plug BEFORE plugging it into the Lilliput. The center connector should be +ve and the outer connector should be -ve.

Connect it to your battery at your own risk... (don't do it)

how much of a draw does the Lilliput put on the Opus? dont wanna over load it...

how would that relate to the Watts it would draw from the PSU? That is my main concern...

BTW.. Nice work on that.. Read about it earlier