Tag: Vcc library

Calibrating Your AVR MCU

The featured picture is by OpenClipart-Vectors on Pixabay.

Building one’s own MCU board, one often does not use a crystal or resonator. Instead, the internal RC-oscillator is employed, which can be quite inaccurate. Similarly, if one wants to use the internal reference voltage to measure the supply voltage, it turns out that the reference voltage can deviate from its nominal value quite a lot. Both, the RC-oscillator and the internal reference voltage can be calibrated, though. In this blog post, I describe a simple method to calibrate both using only a UNO board and a multimeter employing the avrCalibrate library.

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Running on Batteries

Featured image by Andreluiz Cunha from Pixabay.

Running on batteries does not carry your Arduino project very far? Well, when you want to run an Arduino project on batteries, you have to spend some thoughts on minimizing power consumption. Here we will look at what you can do when you use an AVR MCU. Often you will be able to reduce the average current consumption to a few microamps!

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