Thread: DennisK power question

i used a radio shack plug for each board... you can get the generic tips and just solder leads onto them.

the vga controller takes 12v on the pin and gnd on the barrel.
if you have the correct touchscreen cable, then you can use a barrel plug for that too. but that one is 5v on the barrel and gnd on the pin. this info is buried in the forum somewhere.

i used an industrial ac-dc power supply that i have for bench testing, but you can use power from your computer power supply if you want. the screen doesnt pull that much power.

also, im not sure if you have done this yet... but you might have to fix the hirose cable that DennisK sent you. the factory cable is wired slightly wrong. essentially, the controln board is sending out data on 8-bits per color. the sharp screen in the kit is only 4-bits per color. you need to move some wires on the connectors so that the screen is getting the "higher numbers bits" for each color. DO A SEARCH ON THIS. there is a very good explaination of what you need to do... there is also a link to the datasheets and the connection pinouts on the board here. i know because i posted them several times. if you dont do the color fix, the screen will look like crap and your gonna get really ****ed that you spent money on something that looks bad.

~mike

im glad to help...

as for powering it in the car... i have 2 sproggy supplies built so i might put on in the dash and one in the trunk/boot. that way i can run power to each area seperately and give myself some flexibility on switching things on and off... or i might just run power wires up from the supply that is in the computer. i have yet to decide on what im doing in the end... im taking an ultra slow route to getting this done!!!

~Mike

Originally posted by inline4
wanna build me a sproggy?

if you send me all the parts i can put it together for ya.... for a small fee of course.

if you need parts, i *might* be able to get some for ya, but i cant guarantee anything...it would be a lot easier for you to pick up parts for yourself

~mike

i think you have gotten a little confused

what i bought is something similar to this...radioshack adaptaplug
if you cant see the URL the part number is 273-1723 at radioshack. this one that i have shown is probably not the right plug/barrel size. i have just shown it for an example. you will need to bring in the controller card and the serial cable in order to size the plugs you need for each component. they have "tester" plugs that you can put in the power hole... to see what size you need.

there are 2 pins that you have to solder leads onto...one leads to the hole in the middle, that will be the "pin" connection on the controller card. the other pin on the small plug will be for the barrel connection. you can easily test to see which one goes where by using a multimeter, test the resistance between one pin and the barrel... if there is high resistance then you have the wrong pin. if there is low resistance then you have the pin that corresponds to the barrel.

i hope you dont get too confuesed by my using the term pin to describe the connections on the adaptaplug and the pin on the controller card.

~mike

edit... you can also use the radioshack 273-1743 if you dont want to solder to the pins... but i would recommens that you super glue the outsides together (not the pins) so that it cannot come apart and be put together incorrectly....