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Seeed-Studio / Seeed_Arduino_DopplerRadar

Arduino library for DopplerRader
MIT License
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How to set detection distance #12

Closed x29a closed 1 year ago

x29a commented 1 year ago

Hi,

in the product page and over in the wiki it is stated, that the detection distance is 10m.

While performing tests, i can only reach about 2m free line-of-sight.

The protocol datasheet does not state a related command. Or is this the "threshold"?

How can the detection distance be adjusted? Board is powered with 3.3V.

Thanks!

x29a commented 1 year ago

Ok, after extensive testing outside (no other objects blocking) i found out that this is indeed related to the threshold.

The value of 1024 from the examples roughly translates to the 2.5m i stated above, going down to 20 resulted in about 9.3m detection, but starting to become flaky.

So with less threshold, the state might toggle more, so it needs to be adjusted to the application.

I will see where this information is best kept and provide a PR, then close this issue.

PS: operating voltage does not matter, as the infineon chip itself operates at 3.3v anyway.