Calibration Problem

[muratgortekin]

Hello there,

I have a problem with calibration. I have used the following link in the .ino and excel calibration file.
https://github.com/muratgortekin/atm90e26_esp8266
I'm reading the values by zero. I'm using a current transformer. I can't change what I did. What's wrong with that?

[whatnick]

Have you changed the checksum value to match your new calibration parameters? One of easiest approaches is to apply a multiplier in your Arduino firmware.

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On Wed, Apr 24, 2019 at 9:22 AM Murat Görtekin ***@***.***> wrote: Hello there, I have a problem with calibration. I have used the following link in the .ino and excel calibration file. https://github.com/muratgortekin/atm90e26_esp8266 I'm reading the values by zero. I'm using a current transformer. I can't change what I did. What's wrong with that? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#17>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADX7BB3UUA2UUTU7Q7CAUDPR74CFANCNFSM4HIAWNHQ> .

[muratgortekin]

How do I read Checksum? Can I see directly from the serial monitor? Checksum2 is giving an error. Do I have to write the value? Does this ATM90E26 chip calculate itself? Can you tell me the steps, please?

[whatnick]

Please look at the other issues here and the code. Yes the ATM90E26 calculates it, if you read the docs please implement the same in Arduino code ..

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On Wed, Apr 24, 2019 at 1:21 PM Murat Görtekin ***@***.***> wrote: How do I read Checksum? Can I see directly from the serial monitor? Checksum2 is giving an error. Do I have to write the value? Does this ATM90E26 chip calculate myself? Can you tell me the steps, please? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#17 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADX7BD54M2NLOZVLIBJQ53PSAYCNANCNFSM4HIAWNHQ> .

[muratgortekin]

Thank you for your help. I think the calibration job looks okay for the voltage. But I can't read the current value. It always sends the value 0.

[muratgortekin]

Are the MMD0-MMD1 pins connected to GND or connected to VDD? Is it the problem? I have implemented the GND for MMD0 and the VDD for MMD1.

[XingyumLee]

do you know how to work out the Lgain,what do the two frequency mean?