Excellent post about creating a clock that shows the time in QR-code, thus making it only readable by using a QR scanner/reader. Completely useless, of course, but a fun way to use surplus LCD boards.
Excellent post about creating a clock that shows the time in QR-code, thus making it only readable by using a QR scanner/reader. Completely useless, of course, but a fun way to use surplus LCD boards.
[…] converter (ADC) via SPI to read a temperature sensor with Python. It is based on the work for the Quite Rubbish Clock featured on this blog […]