Step 2: The circuit
There is nothing special about this circuit. Using the ATtiny45 you would need to connect everything to the right pins, and connect the 7805 correctly, but if you are using the arduino you probably won't even need a board, sense all the components are for interface. I simply connected all my parts to header pins and attached the headers to the female headers on the arduino board, this way I could easily remove everything when I want to use my arduino for something else in the future. construction of the circuit should be pretty strait forward as you simple connect everything to the right pin, with no need of extra hardware.
on the arduino, the frequency pot goes to A0, the tempo pot goes to A1, the record button goes to pin 9, the tempo LED goes to pin 10 and the speaker goes to pin 11.
On the ATtiny 45, you will have to choose what pins everything will go to since the sketch is setup for the arduino and you will need to change the pins. be sure to put the speaker and button on either pins 0 or 1 (5 or 6 on the chip).
If you use the arduino to do this, there are a ton of unused pins and plenty of space in the code for you to add your own personalized affects. Maybe add a glide button, or maybe even an LFO pot. There are practically no limits. Even with the ATtiny45 you could replace the tempo LED with a button/pot and add some extra affects.
on the arduino, the frequency pot goes to A0, the tempo pot goes to A1, the record button goes to pin 9, the tempo LED goes to pin 10 and the speaker goes to pin 11.
On the ATtiny 45, you will have to choose what pins everything will go to since the sketch is setup for the arduino and you will need to change the pins. be sure to put the speaker and button on either pins 0 or 1 (5 or 6 on the chip).
If you use the arduino to do this, there are a ton of unused pins and plenty of space in the code for you to add your own personalized affects. Maybe add a glide button, or maybe even an LFO pot. There are practically no limits. Even with the ATtiny45 you could replace the tempo LED with a button/pot and add some extra affects.
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TobaTobias says:
Jun 27, 2012. 11:38 AMReplyI dont understand pin 1,2,3. Whats N.L?
21
Higgs Boson (author) says:
Jun 28, 2012. 11:34 AMReplySorry my hand writing is not the best. It says N.C. meaning not connected, and pins 2 and 3 are connected to the wiper pin of the two pots.
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