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!

BOM Layout

Match your kit with this picture to make sure you have all the parts.

If any components are missing, please let us know!

Assembly

Attention: Changes may occur after the Assembly Instructions are created and the photos may not reflect those changes. Always use the BOM to verify the placement of components.

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.

Power Supplies

Black is negative, Red is positive

Wire up the DC jack as shown. P=Pin S=Sleeve C=Connect

DC Jack Pinout

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.

Short these contacts to get the circuit to work without the 9V DC Jack

Potentiometers

Use the pictures above.

The B1k 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=B1k 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.