Hi,
I'm trying to turn on my radio by sending a pulse from my arduino to a latching relay. The radio is powered by a 9volt battery. So basically I want the arduino to send a pulse to the relay which will make the relay latch and thus turn the 9volt battery on.

The Relay I am using is the Omron G6EU-134p. It is a 5v single coil latching relay. At the moment there is a connection between pins 7 and 12 but I do not know how to make this unlatch and therefore make a connection between pins 7 and 10?

I don't know how to unlatch the relay and I'm unsure as to how I should build this circuit? ie should pin 12 of the relay go to the 9v radio battery & pin 10 to gnd? Please see attatched pin layout of the relay.

Thanks in advance,
Mark

 

Reverse polarity for latch/unlatch. (set/reset)

What made you choose this relay?

Dual coil set/reset seems a better choice.
Or even a standard relay.

 

I stand corrected.
http://datasheet.octopart.com/G6E134PUS24DC-Omron-datasheet-10842056.pdf

Page to page 6 of 8. Hints on correct use.

This may be of interest to other uninformed relay users like myself.

Wow!!!!
Omron owns patent on this circuit.

 

You cannot power a relay straight from the arduino either.. The pins cannot provide enough current. You need to construct a relay driver with a transistor or mosfet or optocoupler.
Personally I would just use a regular relay and not a latching one too.

And all you would need to do is cut the red wire from the battery to the radio.. Then attach the one cut end to pin 7 and the other cut end to pin 12.. thus breaking the power circuit with the relays contacts.