bi stable 2 coil relais switch



  • I have no idea where to start, I have a bi stable relais with 2 coils 3v, I want to use it as a batt powered switch using one button. So push once A2 is High for 1 sec, push a second time A3 is high for 1 second. The latest status must be stored in case of a power failure. Does anyone have start code for this project? Most imporatant is how to store the last status of one of the coils.



  • after reading some documentation , I can use a double 'door, window and push' button. the status is not inportant because the state of the relais is stored in the relais itself.


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