This add-on module makes your controller no longer have snapback. With 10 switches to set capacitance, 6 for the horizontal axis and 4 for vertical, you have a lot of fine control.
These modules are very compact and fit into the handles easily. For installing, you need a screwdriver to open the controller (sold separately) and a soldering station. Additional solder or flux is not strictly needed as the wires are pre-tinned with extra flux by me.
Installation time: ~7 minutes. Snapback adjustment time (when using SmashScope / oscilloscope): ~3 minutes.
1. Open the controller, take out the mainboard, remove the black rumble holder.
2. Solder the wires to the potentiometer pins as shown on the photo. Fine tweezers are recommended for this step.
3. Cut out space for the wires in the black rumble holder (shown in the photos).
4. Reinsert the rumble holder into the controller mainboard and move the wires into the cut out space in the rumble holder.
5. Insert the controller mainboard into the front shell again.
6. Remove the yellow protective layer of the sticky foam pad, ideally with fine tweezers, but it can also be done by hand.
7. Position the snapback module close to the black rumble holder, so that it fits into the space between there and the front shell handle, and press it against the controller mainboard firmly for 5 seconds.
8. Adjust capacitance: flipping switches up enables them, 1-6 are for the horizontal axis and 7-10 are for the vertical axis.
The more capacitance you activate (by flipping the switch up), the more you reduce snapback. For example, flipping up swtiches 3, 5 and 9 gives you .22+.47 = .69 uF for the horizontal axis and .47 uF for the vertical axis, which is the ideal amount most of the time (on new / lightly used controllers with default stick knobs).
PCB type: lead-free, ENIG (gold-plated) for maximum durability and compliance with RoHS (Restriction of Hazardous Substances, such as lead).
Solder type: lead-free (RoHS compliant).
Wire type: silicone coated, more flexible and won't melt / cause toxic fumes during soldering, as 'normal' PVC wires do.
Ideal for Gamecube controllers produced in 2008 and newer (JP white, 2014 & 2018 Smash editions), as these are produced with lead-free solder. Also compatible with older controller editions from before 2008 though.
Designed for usage in Nintendo Gamecube controllers, but can also be installed to other controllers that use stick potentiometers.
PCB design and original idea by me (Kadano), PCBs produced and partially assembled by factory. Soldering of the 10x switch and the 4 wires (pre-tinned for easy soldering) as well as quality control done by me.
Additional instructions and details: https://sites.google.com/view/kadano-s2d