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Step 5Test it and clean up
That's it!
Now you need to test it. Make sure the board on the keyboard is in place properly, plug in the USB cable into your computer, test the keys to make sure it works ok, and... press caps-lock. Can you hear the music?
Yes? Victory! Tidy-up the wires with electrical tape, make sure you can close the keyboard properly and put it all back together. Congratulations, you're done!
No? Here are a few things to check that could have gone wrong:
You can use a screw-driver to short the left and right pins of the transistor (not the middle), you should hear the music. If not the problem might be with the music module itself.
You can unsolder the wires from the LED side and touch them to a 1.5V battery (red one to the positive), you should hear the music. If not, then the transistor is probably at fault (is it really an NPN?)
Good luck!
Now you need to test it. Make sure the board on the keyboard is in place properly, plug in the USB cable into your computer, test the keys to make sure it works ok, and... press caps-lock. Can you hear the music?
Yes? Victory! Tidy-up the wires with electrical tape, make sure you can close the keyboard properly and put it all back together. Congratulations, you're done!
No? Here are a few things to check that could have gone wrong:
- The solder connections could be dry, weak or otherwise dodgy. Check them carefully.
- The transistor could be the wrong one or the wrong way around, or soldered at the wrong location on the music module.
You can use a screw-driver to short the left and right pins of the transistor (not the middle), you should hear the music. If not the problem might be with the music module itself.
You can unsolder the wires from the LED side and touch them to a 1.5V battery (red one to the positive), you should hear the music. If not, then the transistor is probably at fault (is it really an NPN?)
Good luck!
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