consecutive analogRead()

Question

Has anyone noticed that if calling analogRead() in a consecutive way that the value drops by a bit as opposed to just doing a single read?

And is this to be expected?

I am using a Seeeduino XIAO.

You need a short delay between analog reads, more about it here: https://www.quora.com/Why-is-a-little-delay-needed-after-analogRead-in-Arduino — Nino, Jul 18 '21 at 15:10
@Nino Thank you. That would explain it! (Add it as answer and I mark it as solution.) — MeSo2, Jul 18 '21 at 15:23

score 1 · Accepted Answer · answered Jul 18 '21 at 15:49

1

You need a short delay between analog reads due to the time it takes to complete a reliable ADC reading. In depth technical explanations can be found here, note that it refers to AVR architecture.

answered Jul 18 '21 at 15:49

Nino

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consecutive analogRead()

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