Instead he looks at using the 1.1V internal reference. He’s written some short example code that let’s you measure the incoming line voltage based on that internal reference.

You can characterize a semiconductor device to be its own temperature sensor by using an accurate four-wire measurement technique.

It’s an easy to build high voltage power supply that interfaces with an Arduino. After harvesting a flyback from the power board of a CRT, [Andrew Moser] added a new primary coil to the transformer.

How to use a spectrum analyzer, rather than a scope, to measure noise soruces that degrade ADC performance.

The EasyNixie Arduino compatible low-voltage Nixie Tube driver module has emerged as a versatile and user-friendly tool for hobbyists and professionals alike.