Posc is a battery powered, pocket sized oscillator. It has two square wave oscillators, one of which is controlled by changes in the user’s skin resistance over two metal contacts. The pitch of the second square wave oscillator is controlled by manipulating the amount of light received by the light dependent resistor. The Posc can be set to work in either stereo or mono output through a standard 1/4" audio jack, so is compatible with a wide range of audio equipment. It is ideal for use with guitar amplifiers and effects pedals, PA systems, and can even be plugged directly into your computer or Hi-Fi audio inputs. Download a PDF of the instructions and schematic here For a PDF of the PCB artwork click here – Note: It’s a mirror image used to make a laser toner transfer, you may have to reflect it depending on your method for printing PCBs. A free effects rack for the Posc is also available from our software page. Soldering equipment not included.

Kit Contents

• 1 x Posc Printed Circuit Board (Available in Green, Red, Black or Blue)
• 3 × 1KΩ Resistors
• 1 × 3M3Ω Resistor
• 2 × 0.1µƒ Ceramic Capacitors
• 1 x Super Bright 250mcd LED
• 1 x Light Dependent Resistor
• 1 x Power Switch
• 1 x Stereo 1/4" Jack Socket
• 2 x NE555 Timer ICs
• 2 x Zinc Plated Body Contacts
• 1 x PP3 9V Battery Clip
• 1 x Length of 0.2mm Multistrand Wire
• 1 x Small Heat Shrink
• 1 x Large Heat Shrink