How to make a QR code to accept payment in cryptocurrency?

Question

bitcoin

I want to make a website with useful services based on machine learning.
For starters, I want to accept payments only in crypto.
I think that it will be convenient to receive in a QR code, a person brings a smartphone with a QR code to a webcam and simply pays with ether or bitcoin, nothing needs to be entered anywhere. Most people don't like to do this.
I wonder how this is done?

Answer 1

Text to generate, URI (without square brackets):
and generation .
Through Google (template):
PS: interactive generator - here .

Answer 2

https://bitcoin-generate-qrcode.com/