Page 1 of 1
need help powering LK204-25 V from just the serial cable
Posted: Sun Aug 31, 2003 8:28 am
by Gooey
Hi i have got a display as mentiond in the title, had it mounted internally but am now making a box for it to be external
I am slightly confused how to wire it up to power from only the serial cable and have a couple of questions
1 - Do I have to add and extra power source eg splice it from a molex connector then connect it to the correct wires on the serial cable, or does it just draw power from the serial port itself,
2 - which jumper needs soldering is it the one directly under the serial port on the display?
thanks in advance for any replies hope someone can help me
Posted: Wed Sep 03, 2003 11:32 am
by Miles
Hello...
With the part number you provided to me you can easily apply power via the DB9 connector. You must be aware that the model number you have is a "V" option and this implies that the unit will run on 7-12 Volts. This however is not the case if you apply voltage via the DB9. The voltage source must be an external 5 Volts as it does not run through a regulator. The solder jump just below the DB9 must be made and voltage ran to pin 9 of the DB9. The other connections of course are Rx, Tx and ground.
Posted: Sun Sep 07, 2003 10:57 am
by Pheonix
Remember though, you could custom make a lead, as Serial will only use two cables. So you could use CAT5, with two cables for signal, two for 5V and 1 for ground...or similar
And you could get a plug end for it for the external box, and then split it off at the PC. I've done this before and it works quite well!
Posted: Mon Sep 08, 2003 10:25 am
by Miles
Thanx for the good suggestion Phoenix...that'll work quite well!!
Posted: Mon Sep 08, 2003 11:52 am
by Pheonix
NPs
Posted: Tue Sep 09, 2003 4:43 am
by Gooey
Thanks for the replies
What i ended up doing was taking some 6 core alarm wire, a floppy drive power header and a male and female serial header and just split the connections at either end of the cable to make the connections, one other mod was i got 2 spare molex plugs and mounted them to an empty PCI bracket so now I have external power from molexes, but after doing this, I think it may have been better to mount it into the pwer supply itself right next to where the power cable plugs in, ah well it'll do for revision 2 anyway lol
again thanks for the help, and i must say Matrtix Orbital displays combined with LCDC kicks ass, just wondering is there gonna be any 4x20 usb LCDs with the fanbus and thermal probe support coming out
Posted: Tue Sep 09, 2003 8:57 am
by Miles
Coming soon...release date still to be determined!!!
Posted: Tue Sep 09, 2003 4:58 pm
by Gooey
nice one
hope it aint too long, new case project means new lcd display