The Stable Diffusion community has found a way to create QR codes without the need for a custom-trained ControlNet model. Generating QR codes requires the AUTOMATIC1111 Stable Diffusion GUI, ControlNet extension, and a high fault tolerance QR code. The method involves generating an image similar to the QR code with img2img and using ControlNet during the sampling steps. The success rate of generating functional QR codes is about one in four, and some prompts blend more naturally with QR codes than others. The article includes step-by-step guides and tips for generating QR codes with Stable Diffusion.
https://stable-diffusion-art.com/qr-code/