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Step 5Solder on the transistors
OK, remember how you just figured out which of the button's leads had a high voltage on them and which were at ground? Cool.
Now we're going to solder transistors to the buttons so that we can control the current flow from another circuit. And by 'we', I mean you. I already did it. That's where all these pretty pictures came from
OK, so you'll want to solder the collector lead of your transistor to the high voltage pin of the button, and the emitter lead to the ground pin of the button. Bend the base lead out of the way, so that you can get to it later. Do this for each button.
Now we're going to solder transistors to the buttons so that we can control the current flow from another circuit. And by 'we', I mean you. I already did it. That's where all these pretty pictures came from
OK, so you'll want to solder the collector lead of your transistor to the high voltage pin of the button, and the emitter lead to the ground pin of the button. Bend the base lead out of the way, so that you can get to it later. Do this for each button.
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