DEC #04 High precision current measurement - ACS758 and Arduino with ADS1115 16-bit ADC

[@fensrg]

2 двунаправленных acs758 подключенных встречно и ads1115 в дифференциальном режиме повысят точность! Можно еще добавить повтор замеров с усреднением значений, например усреднение по 10 выборкам.

[@ManousosGrillakis]

you could connect 5v to input 1 of ads1115 and in code take that measurement and divide it by 2. that then is your middle point of the acs758. in code then .. voltage = (ads.readADC_SingleEnded(0) - ((ads.readADC_SingleEnded(1))/2) )*0.0001875; current = voltage / 0.04; // 40mV/A current even if 5v goes up and down a little it will compensated in code

[@DigitalElectronicsCircuitsLab]

Yeahhhh good suggestion.... Thank you for commenting

[@bagusdwi6215]

Hi, i have a question. If i change the current sensor to sct013 5A/1V and using esp32 with 3.3V, do i only need to adjust the program in sensitivity from 40 to 5 ? And whats the value of 13333 will be ? And then my measurement will be working?

[@whatwhatdidtheysay...lyric2373]

Goog job! Excellent work!

[@robertguerard6217]

I would have liked to see you insert a 10nF capacitor between Vout and ground on the ACS758 to reduce the noise or at least talk about the effects of this capacitor size on noise since you mentioned it earlier.

[@whatwhatdidtheysay...lyric2373]

Actually, it would be cool to see a few different-sized capacitors tried. Because as you increase cap size you lower noise but reduce rate of change. Might be able to find an "ideal" capacitor value

[@UserName-cb6jz]

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[@DigitalElectronicsCircuitsLab]

Thank you so much my friend!

[@przoch5835]

thank you, very well and clearly explained

[@UserName-cb6jz]

Great video! 👍🏻

[@jeffbluejets2626]

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[@dakshparmar5983]

I am getting the below error message C:\Users\kishore\Documents\Arduino\current\current.ino: In function 'void setup()': C:\Users\kishore\Documents\Arduino\current\current.ino:12:18: error: 'Digital' was not declared in this scope Serial.println(Digital Electronics lab); ^~~~~~~ exit status 1 Compilation error: 'Digital' was not declared in this scope

[@DigitalElectronicsCircuitsLab]

Write this line as : Serial.println ("Digital Electronics lab"); I hope it will resolve the issue

[@Drxxx]

Super videi

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[@DigitalElectronicsCircuitsLab]

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[@sorinal1234]

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[@DigitalElectronicsCircuitsLab]

website is down for the time, Sorry my friend. Will be live soon