Optical Theremin Assembly Instructions
Welcome to the Optical Theremin Assembly Instructions! If you’re new to circuit-building, this is a great kit because it’s easy to build and it makes some crazy sounds. Let’s get started!
Match your kit with this picture to make sure you have all the parts.
If any components are missing, please let us know!
IC Socket, Capacitors, and Resistors
Solder in the IC socket. Line up the half-moon notch with the notch on the PCB.
C1 and C2 are .1uF ceramic capacitors. R2 is a 1M resistor.
Ceramic capacitors and resistors are non-polar so don’t worry about negative or positive leads.
Black is negative, Red is positive
Wire up the DC jack as shown. P=Pin S=Sleeve C=Connect
If you do not want to install the 9V DC jack and only install the 9V battery clip you will have to short the S and C pins for the 9V DC Jack like shown in the picture below*.
* Your PCB may not look exactly like the photo, that is ok. What is important is that you short the same pins as shown in the photo.
Use the pictures above.
The A100k pot will be wired on pins 1 and 2. The B1M pot will be wired on pins 2 and 3.
Don’t worry about the extra pins on the potentiometers.
Wire the pots to the PCB… R4=A100k R5=B1M
When installing the pot, some pots come with nubs near the shaft that may get in the way of installing the circuit into a case. Check for a nub and clip as necessary.
Wire as shown in the picture above.
Wire as shown in the picture above. S=Sleeve (ground) T=Tip
If you are using 1/4″ jacks, please use the diagrams below to wire them in properly.
R3 and R1 are the optical resistors. Wire them up in any way you choose!