In this video, we show how to configure an Arduino UNO board for precise voltage measurements. A good-quality power supply is required for this. Also, you must know the exact value of the reference voltage the AD converter is using. Do not simply assume that it is 5 V or so, measure it. If you follow the instructions carefully then you too can take accurate measurements with an Arduino board.
#Arduino @Arduino
Contents
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0:00 intro
0:15 Analog-to-digital converters
1:12 analogRead()
1:57 Convert to volts
2:49 Floating-point calculations
3:36 A practical application
5:15 Better resistors
6:38 Measure the reference
7:41 Use a good power supply
8:52 analogReference()
10:00 Interference
10:59 Summarizing
Resources
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* Arduino UNO Rev3: [ Ссылка ]
* A good multimeter: [ Ссылка ]
* A good power supply: [ Ссылка ]
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