RPM goes negative above 30k

[drhugobr]

Hello, I've used this library on my arduino pro mini, and everything seems to be working fine on my FRskyX10S with an RX8R receiver, the problem is after the turbine (kingtech K80F, Xicoy ECU) reaches an RPM above 30K, then it starts to go down to ZERO and then goes negative to -30K and then back to zero, almost as a sine wave,

a little log of RPMs, Real vs indicated:

Real - Idicated
0 - 0
10k - 10k
30k - 30k
50k - 10k
60k - 0
70k - (-10k)
80k - (-20K)

and so on. any idea of whats wrong and how to fix it?

[RealTadango]

I noticed this too added a fix 4th of july. It works correct for my up to 150.000k. Could you be using the old code?

[drhugobr]

Thanks for the answer. But I've cloned the repo and uploaded to Arduino with wIth few changes that shouldn't really matter. Em seg, 29 de nov de 2021 12:45, RealTadango ***@***.***> escreveu:

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I noticed this too added a fix 4th of july. It works correct for my up to 150.000k. Could you be using the old code? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#17 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACSGEDGUDUVQXFFCFITKON3UOONYRANCNFSM5GTXXKKQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.