MP3Car.com - View Single Post - ciruitry and solder help for ibm laptop lid switch

Wiredwrx · 02-18-2006, 03:28 PM

Quote: Originally Posted by hooraysimpsons

Hello,
I am trying to use the lid switch on my ibm r40e thinkpad laptop to automaticlly put the laptop into standby and bring it out of standby. I want to hook it up so that when power is supplied (the car is on) then the laptop thinks the lid is open and when power is not available the laptop thinks the lid is closed.

I have a multimeter but there are six leads into the switch on the mobo as far as I can tell so I was wondering if anyone could help me figure out what to measure? Here are a couple links to some pictures of the switch. I apologize for their quality.

http://students.engr.ncsu.edu/ans/pics/im1 good view of all six leads
http://students.engr.ncsu.edu/ans/pics/im2 better focus but can't see all the leads

Once I have measured what is needed then I will also need some help determined what circuitry I need to make it work. Also if there is a kind of solder that I should be using for this. Right now I have Rosin-core solder.

Thanks a lot,
Paul

There is no standard for any switch. The fact that there are 6 leads doesn't really tell us much. You will need to test all the wires against each other with the "continuity" setting of you Multimeter to determine which contacts are "close" or connected when the button is pressed.

Then, just solder wires to those contacts (you will probably only need 2 wires on two contacts) and bring them out to a relay that you can control with the ignition or with another switch.

Now, are you sure that the screen switch will put the laptop into standby or hibernate and take it out when it is open??

Michael

02-18-2006, 03:28 PM	#2
Wiredwrx Calm Down Or Get A 2 Week Vacation -Love The Forum Policeman Join Date: Jan 2003 Posts: 3,604	Quote: Originally Posted by hooraysimpsons Hello, I am trying to use the lid switch on my ibm r40e thinkpad laptop to automaticlly put the laptop into standby and bring it out of standby. I want to hook it up so that when power is supplied (the car is on) then the laptop thinks the lid is open and when power is not available the laptop thinks the lid is closed. I have a multimeter but there are six leads into the switch on the mobo as far as I can tell so I was wondering if anyone could help me figure out what to measure? Here are a couple links to some pictures of the switch. I apologize for their quality. http://students.engr.ncsu.edu/ans/pics/im1 good view of all six leads http://students.engr.ncsu.edu/ans/pics/im2 better focus but can't see all the leads Once I have measured what is needed then I will also need some help determined what circuitry I need to make it work. Also if there is a kind of solder that I should be using for this. Right now I have Rosin-core solder. Thanks a lot, Paul There is no standard for any switch. The fact that there are 6 leads doesn't really tell us much. You will need to test all the wires against each other with the "continuity" setting of you Multimeter to determine which contacts are "close" or connected when the button is pressed. Then, just solder wires to those contacts (you will probably only need 2 wires on two contacts) and bring them out to a relay that you can control with the ignition or with another switch. Now, are you sure that the screen switch will put the laptop into standby or hibernate and take it out when it is open?? Michael __________________ ...I love the French language...especially to curse with...Nom de Dieu de putain de bordel de merde de saloperies de connards d'enculés de ta mère. You see, it's like wiping your *** with silk, I love it. www.yellinlawoffice.com