Please, help me with this 3_state switch !?

ANSWER : so, at the end, it was a switch. I had to do it the hard way :( have a look at the last picture.


could someone help me with this 3-state switch ??? I would like to remove it from the PCB, solder some wires and make ARDUINO + MOSFETs to control it = instead of me, manipulating the switch, I want the arduino to do that for me.

Unfortunately I'm not able to find out which PINs I have to connect together to simulate the switch. I did some measurements and make matrix - if it could help to find out which pins to put together.

Thank you in advance.


P.S. : The voltmeter was set to 2000mV, and the RED_positive probe was attached to the NUMBER pins

Picture of Please, help me with this 3_state switch !?
sort by: active | newest | oldest
Re-design7 years ago
show us the back side of the "switch".
zholy (author)  Re-design7 years ago
I have uploaded the other side as well.
Re-design zholy7 years ago
It is definately a pair of switches. I assume that when the case is on the item that there is a button that slides the contacts back and forth.

By looking at the contacts in the last photo you should be able to figure out the pattern by seeing which contacts make connection in the positions you were able to switch to.

With out knowing how many positions you could switch to we can't figure out the switch from here.
zholy (author)  Re-design7 years ago
Hmm ... when I'm reading your reply, probably I realised a new information. Do you call BUTTON things, that slide as well ??? I thought, that when something SLIDES it is SWITCH ... and when you press something DOWN it's BUTTON. But from your reply I understand it like this : switch is something that will make contact between points and BUTTON is the thing, that operates the SWITCH ??? Is it correct ??? When it comes to the positions - I have found that out. There was no other options :) :) :) after I have destroyed the switch and manually pull those pins out. Drastic, but it cost me less nerves than by desolder all those pins. The pump just didn't suck the solder away ... and the solder wick didn't take all the solder away. Any way, now I do know which positions belongs to which state so I'm able to operate it (for now, just manually. Thanks
zholy (author) 7 years ago
After taking it apart and destroying the switch - I was able to find out how to operate it. To bad, that my desoldering skills are not good.
framistan7 years ago
The "switch" you are talking about looks to me like the solder-side of a DPDT (double-pole-double-throw) relay Starting at the LEFT side of your yellow-box picture... there are 2 pins by themselves. That is the relay's COIL. Now lets look at the 6 pins grouped to the RIGHT of the yellow box. The CENTER 2pins are the movable arm of the relay. The outer 4 pins (2pins on left and 2 pins on the right) are the STATIONARY contacts. You can use an OHM meter to determine which 2 are normally closed when relay is NOT energized. I have never seen a 3-state switch ... and I am pretty sure you are using a 2-state relay not a 3 state switch. I just worked on a relay like that at my job yesterday. If the relay says DPDT it is only 2 state. I only see 6 actual pins for the relay... the other 2 pins as explained above are just the relay-coil likely 6 volt coil. If the coil gets 6 volts... the relay switches.
zholy (author)  framistan7 years ago
Well ... at the end, it was a switch.
zholy (author)  framistan7 years ago
Framistan ... thanks for your fast reply. Thanks to you, I have realised, that I didn't make measurements just in the rows by them self. And that seems to be the "trick" from what I've seen on pictures of DPDT. But one thing still confuses me. If it is relay, then it is the smallest one I've ever seen. It just 12x6x4mm big. And the other thing - relays should have coil - but if there is a coil, what is the need for the "switch"/manual changing of the positions ON_ch---OFF---ON_s ???What will the coil do in this case ??? Thanks again.