Effect type: overdrive Pedal description Rated as one of the best guitar overdrives, this DIY project is the ZeN and is based upon the famous Zendrive. The board of this project is designed to fit in a 1590A enclosure or similar, but if you haven't previous experience we recommend to build the project in a 1590B or 1590BB enclosure. Controls Gain Tone Volume Voice   Kit contents Capacitors                 1x        100pF 50V Ceramic Disc Capacitor 1x        3.3nF 0.0033uF 100V 5% Polyester Film Box Type Capacitor 1x        100nF 0.1uF 100V 5% Polyester Film Box Type Capacitor 2x        470nF 0.47uF 100V 5% Polyester Film Box Type Capacitor 1x        47uF 16V 105C Radial Electrolytic Capacitor 5x11mm 1x        100uF 16V 105C Radial Electrolytic Capacitor 5x11mm Transistor                 2x        2N7000 MOSFET N-CHANNEL 60V 0.2A              Diodes                 3x        BAT41 Shottky Barrier Diode Resistors              3x        1K OHM 1/4W 1% Metal Film Resistor 3x        10K OHM 1/4W 1% Metal Film Resistor 1x        470K OHM 1/4W 1% Metal Film Resistor 1x        2M OHM 1/4W 1% Metal Film Resistor Potentiometer                 1x        100K OHM Logarithmic Taper Potentiometer Round Shaft PCB 9mm 1x        10K OHM Linear Taper Potentiometer Round Shaft PCB 9mm 1x        500K OHM Linear Taper Potentiometer Round Shaft PCB 9mm 1x        50K OHM Linear Taper Potentiometer Round Shaft PCB 9mm   IC'S 1x        NJM4558 4558 Dual Operational Amplifier General Purpose IC   NOTE:            We recommend to use 9mm pots if you are going to build this project in a 1590A enclosure, but if you choose a bigger box, you can use full size pots.                Hardware                 1x        ZEN PCB BOARD    1x        1590A Style Aluminum Diecast Enclosure 1x        3MM BEZEL LED HOLDER CHROME METAL             1x        DC Power Jack 2.1mm Enclosed Frame With Switch External 2x        6.35mm 1/4" Stereo Phone Jack 1x        3PDT STOMP FOOT / PEDAL SWITCH             4x         Knob DAVIES 1900H CLONE Black        1x        AWG 22 BLACK HOOK-UP WIRE 1FT (30CM) STRANDED             1x        AWG 22 RED HOOK-UP WIRE 1FT (30CM) STRANDED             1x        AWG 22 WHITE HOOK-UP WIRE 1FT (30CM) STRANDED      NOTE: This kit is for the 1590A version, if you're going to use a 1590B or 1590BB enclosure you can use other jacks and knobs and you could add a battery clip using one stereo jack and one mono jack.   Important: We recommend to use low profile jacks in order to gain more space but the TAYDA enclosed jacks listed in this kit will work too. The board has enough space to put the electrolitic caps in horizontal but if you can find 100uF and 47uF 5x7mm or 6x7mm, these will work perfect in the standard position.       PCB DESIGNATORS: Capacitors C1 470nF C2 100pF C3 100nF C4 3,3nF C5 470nF C6 100uF C7 47uF Diodes D1 BAT41 D2 BAT41 D3 BAT41 IC'S IC1 NJM4558 Transistors Q1 2n7000 Q2 2n7000 Resistors R1 2M R2 470K R3 1K R4 10K R5 1K R6 10K R7 10K R8 1K Pots GAIN 500kB TONE 50kB VOICE 10kB VOL 100kA                       SCHEMATIC: