I often get questions about how to measure voltage with microcontrollers. We will look at this topic, at the quality of built-in and external Analog-to-digital converters, and I will show you some “secrets.”
In this video, we will:
- See how ADCs work
- Look at how we can determine the quality of ADCs
- Compare the ADCs of different microcontrollers with external chips
- Learn how to tweak the calculations to get the best out of any ADC
- See how we can extend the range of ADCs
- Discover some “hidden” things of Microcontrollers and their ADCs
- Look at different external boards and their usage
I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, EEVblog, and others.
Links:
ESP32 dev board: http://s.click.aliexpress.com/e/_dZRlwBw
ESP32 Breakout: http://s.click.aliexpress.com/e/_dYPpD2c
ADS1115: http://s.click.aliexpress.com/e/_d9kxGU8
PCF8591: http://s.click.aliexpress.com/e/_dTanrOc
AD7705: http://s.click.aliexpress.com/e/_d6fDmrw
Nice looking ADC (AD7606): http://s.click.aliexpress.com/e/_dYHWm0A
Voltage reference: http://s.click.aliexpress.com/e/_d6N3GHc
Voltage Divider: http://www.ohmslawcalculator.com/voltage-divider-calculator
ADC Theory: https://e2e.ti.com/blogs_/archives/b/precisionhub/archive/2014/10/07/adc-accuracy-part-1-is-accuracy-different-from-resolution
DAC Theory: https://en.wikipedia.org/wiki/Digital-to-analog_converter
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Supporting Material and Blog Page: http://www.sensorsiot.org
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