OSKITONE OKAY 2 Synth, Инструкция по сборке

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Putting it all together
Testing and debugging
With everything connected, plug in the IC chips to their
sockets, add a 9v battery, turn it on, and press one of the
buttons. If it made a sound, it works!
Now go through all the buttons and make sure that they each
make a sound. The notes won’t be in tune yet and will be
incredibly low, but they should get lower in pitch as you move
left.
If not, try these debugging steps:
●
Turn the boards over and check all solder joints. A
majority of problems are caused by insufficient or
errant soldering. Familiarize yourself with what a good
joint looks like in the “Adafruit Guide To Excellent
Soldering”
● Using a multimeter’s voltage meter, check that each
board is getting power. Then refer to the circuit
diagrams in the appendix to make sure the power is
getting to the appropriate IC pins.
● If the LED light turns on but the two IC boards aren’t
getting power or working, check to see that the bus
diodes are in the right direction.
●
Check that SPST_VR is acting like a potentiometer by
measuring its output resistance with a multimeter. The
resistance should get lower as you press buttons from
right to left.
●
If there’s buzzing, check for any metal scraps stuck to
the speaker’s magnet
●
If you’ve got the OKAY 2 and its output jack is behaving
inconsistently, review its diagram from before and
make sure it’s contacts are working and wired correctly