The Concept

• Two half sized pedals
• Pedal A, aka “Fission”, splits an input signal into two, providing an independently controlled amount of boost to each signal
• Pedal B, aka “Fusion”, mixes two input signals into one, proving intuitive balancing and overall volume control
  • Note: Some documentation may refer to “Fission & Fusion” by their former project title, “This & That”

Main Uses

• Running various effects in parallel rather than series
  • Clean || Fuzz
  • Distortion || Flange
  • Reverb || Delay
  • etc…
• Exclusively use “Fission” to create stereo output
  • Connect to two different amps
  • Record two different tracks/effects at the same time
• Exclusively use “Fusion” to mix two different instruments

Enclosure & Physical Designs

• Fully designed in Fusion360, to be 3D printed
• Each pedal shares the same overall dimensions for uniformity
• “Fission”: 1 input jack and 2 output jacks
• “Fusion”: 2 input jacks and 1 output jack

Signal Routing & Bypass

• When engaged: Input(s) → Circuit → output(s)
  • ~500 kΩ input impedance
  • ~175 Ω output impedance
• When bypassed: Input → Output (True bypass)
  • LED indicators disconnect when bypassed

Power Supply

• Source: 9 VDC (standard guitar pedal supply)

Circuits

• Each pedal uses different LED configurations to visually differentiate from one another
• “Fusion” utilizes a dual-gang potentiometer as apart of it’s mixer design
• Each pedal amplifies their input(s) by ~5x
• Each pedal maintains proper phase alignment
• All in/outputs are buffered for maximum signal quality/preservation

PCB Designs

• PCBs are mounted to their respective pedal’s roof using 2 potentiometers
• All components used are THT
• In/output jacks as well as DC jacks connect via quick connects

3D Printing

• 3mf file provided
• Layer height: 0.16 mm
• Infill: 20%
• Walls/Ceilings/Floors: 3
• Supports: Snug supports enabled
• Fuzzy skin (optional): Enabled on outer walls of both body and bottom