Hello,
I am a fanatic ESP32 mini user (MH ET LIVE or Wemos/Geekcreit D1 mini/WEMOS TTGO Mini D1 ESP32) because of its compact size.
But i am experiencing major issues with the huge tolerances on the ADC's accuracy. Analog sensor measurements are way too inaccurate for serious measurements. At 1.5 V the ADC input can register from 1.3 tot 1.6volt. This is a huge problem for temperature sensing etc etc.
Are there higher grade boards out there with the ESP32 chips that measure analog voltage very accurately ?
Better ADC i/o accuracy ESP32 boards?
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Re: Better ADC i/o accuracy ESP32 boards?
Just use external adc.
Better esp32 adc will need a new esp32 version.
Better esp32 adc will need a new esp32 version.
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Re: Better ADC i/o accuracy ESP32 boards?
Do you mean that it is a chip problem and not a pcb problem?
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Re: Better ADC i/o accuracy ESP32 boards?
unfortunately yes.
flaming_crossbow wrote: ↑Thu Feb 27, 2020 8:39 pmDo you mean that it is a chip problem and not a pcb problem?
- jgustavoam
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Re: Better ADC i/o accuracy ESP32 boards?
Hi,
My project is not compact, but very accurate and stable.
In fact, it uses one external DVM.
https://www.elektormagazine.com/labs/es ... -voltmeter
My project is not compact, but very accurate and stable.
In fact, it uses one external DVM.
https://www.elektormagazine.com/labs/es ... -voltmeter
Retired IBM Brasil
Electronic hobbyist since 1976.
Electronic hobbyist since 1976.
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