This is follow-up video to https://youtu.be/f_gnoU22Dj0 where the design-errors are demonstrated.
Download of the schematics with the optimized components and instructions:
https://www.ak-modul-bus.de/stat/funktionsgenerator_bausatz_xr2206_kit,pd1010!0,,XR2206-KIT.html
Support Roger on Patreon: https://www.patreon.com/kainkalabs
This video is about how to fix them and make a really useable mini function-generator out of the badly designed 7$ Ebay XR-2206 kit.
A user has commented that the used XR-2206 is probably a counterfeit chip.
This is confirmed here live by exchanging the chinese-supplied XR-2206 chip with a genuine one.