How do I edit the user configurable options?

The user configurable options are accessible through CHOMPI's microSD card.

Instructions

Step 01: Turn off CHOMPI if not already off

• You should never try to remove the microSD card from CHOMPI while it is powered on

Step 02: Remove microSD card from CHOMPI

• Carefully remove the microSD card from the slot located on the right side of the rear panel, next to the handle
• TIP: The slot is designed with a round hole in the center that nicely fits a 3.5mm cable end, ballpoint pen, or something similar
• NOTE: The card is spring loaded so watch for any flying SD cards ;)

Step 03: Insert microSD card into your computer

• Using a standard microSD card adapter, load the card onto your computer just like any other external hard drive or storage device

Step 04: Backup your files (optional but recommended)

• Now is a great time to take a second and backup your files and presets that are currently being stored on the card
• It’s good practice to select all of the files in the root directory of the card and simply copy them into a new folder on your computer

Step 05: Open the options.json file with a text editor

• Tip: Create a copy of the options.json file onto your desktop to make the edits. We do not recommend editing directly on the microSD card.
• Use a simple text editor to open the options file

Step 06: Make preferred changes to the options file

• Use the text editor to change any options to your preference
  • Record Latch - Determines the behavior of the CHOMPI Key (sample record) while in CHOMPI Mode
    • false (default) = Momentary Press Action, 
    • true = Latch/Toggle Press Action"
  • Midi In Channel - Sets Midi Input Channel for both the USB-C and 3.5mm Midi Inputs
    • 1 - 16
    • 1 (default)
  • Midi Out Channel - Sets Midi Output Channel for both the USB-C and 3.5mm Midi Outputs
    • 1 - 16
    • 1 (default)
  • Tape Slew On - Activates/Deactivates Tape Slew effect when the Looper START & STOPS Playback
    • true (default) = Tape Slew Activated
    • false = Tape Slew Deactivated
  • Monitor Position - Determines which input monitor position that CHOMPI will automatically boot up in
    • 1 - 3
    • 1 (default)
  • Pitch Quantize In Shift Menu - Toggles behavior of pitch quantization (5th & Octaves) for both sampler and looper engines
    • true (default) = Fine Tune primary knob function, Pitch Quantization while shift is held down 
    • false = Pitch Quantization primary knob function, Fine Tune while shift is held down

Step 07: Save and replace the options file

• Save your changes before closing the text editor
• Replace the options file on the microSD card with the newly saved options file

Step 08: Eject microSD card from your computer

• Safely remove the microSD card from your computer by using the “Eject” option

Step 09: Reinstall microSD card back into CHOMPI

• Carefully reinsert the microSD card back into CHOMPI
• WARNING: due to the way the panel enclosure is designed, it is possible to miss the card slot and drop your microSD card into the enclosure. If this happens, simply remove one of the side panels and shake the microSD card out