I am working on a project to put electronic locks on "Jack and Jill" bathroom doors. I am building this project in blocks and my first block is the lock/unlock button (switch). While some blocks will likely require a microprocessor, I would like to built the button with discrete components.
I have chosen an RGB LED momentary button (similar to arcade type buttons) and need help making it latching and being red in one state and green in the other. I love Wendy's 555 latching design http://forum.allaboutcircuits.com/threads/submission-555-bistable-multivibrator.40717/, but I have been unable to get it to work with an RGB LED. I believe it is because it only has one cathode while her design uses two separate LEDs and thus two cathodes.
My question: Is it possible to modify Wendy's design to work with an RGB LED, if not, can someone recommend an alternative latching circuit?
Thanks in advance
I have chosen an RGB LED momentary button (similar to arcade type buttons) and need help making it latching and being red in one state and green in the other. I love Wendy's 555 latching design http://forum.allaboutcircuits.com/threads/submission-555-bistable-multivibrator.40717/, but I have been unable to get it to work with an RGB LED. I believe it is because it only has one cathode while her design uses two separate LEDs and thus two cathodes.
My question: Is it possible to modify Wendy's design to work with an RGB LED, if not, can someone recommend an alternative latching circuit?
Thanks in advance
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