It was reported that some (citation needed?) apps were unable to decode the default QR background. The i command was introduced to flip the color of the QR code. Updated code is at Github.
https://github.com/arduinoenigma/EnigmaQRClock
New Inverted view:
![](https://cdn.hackaday.io/images/7266951475232983627.jpg)
Original view:
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