I am an absolute beginner in electronics. So far I have created a circuit with 2 LEDs and 2 SPST pushbuttons, each controlling a different LED. Very simple, you should get the idea without me drawing a circuit.
I've been trying to figure out how to add a third pushbutton, which would control both two LEDs at the same time, without altering the functionality of the two existing two pushbuttons.
Is it even possible to achieve this with 3 SPST pushbuttons, without adding any other components? If not, I am interested in learning what would be the simplest design to achieve this. Thank you.
Best Answer
No. Without adding extra components (Diodes) you can not use SPST buttons.
simulate this circuit – Schematic created using CircuitLab
If you use a DPST or DPDT switch instead, quite easy to find, you can avoid the diodes. You would ignore the extra pins on the DPDT switch.
simulate this circuit