How to see ON/OFF status by using SCT-013 via Raspberry Pi?

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SUMMARY

The discussion centers on using the SCT-013 non-invasive current sensor with a Raspberry Pi and MCP3008 ADC for online machine monitoring. The user, Coskun, reports issues with the sensor providing both ON and OFF signals regardless of the actual machine status. The community suggests that a clearer description of the circuit and observed signals is necessary to diagnose the problem effectively. The importance of labeling the time axis on the oscilloscope readings is also highlighted to better understand the machine's operational status.

PREREQUISITES
  • Understanding of SCT-013 non-invasive current sensor functionality
  • Familiarity with Raspberry Pi GPIO and interfacing
  • Knowledge of MCP3008 ADC usage for analog signal processing
  • Basic skills in interpreting oscilloscope readings
NEXT STEPS
  • Research how to calibrate SCT-013 for accurate current readings
  • Learn about Raspberry Pi signal processing techniques
  • Explore MCP3008 ADC configuration for optimal performance
  • Investigate best practices for oscilloscope signal analysis
USEFUL FOR

This discussion is beneficial for hobbyists and engineers working on IoT projects, particularly those focused on machine monitoring and sensor integration using Raspberry Pi and ADC components.

Coskun
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Hello,

I'm trying to make a project and I have a trouble. The project is 'online monitoring of machine'. I will show ON if machine works and OFF if machine does not work. And the rule is: I can not effect machine by my circuit. So it looks so simple. I bought SCT-013 non-invasive current sensor and connected it to the Raspberry Pi over MCP3008 ADC. When I run the program I see ON and OFF both even machine works. I just need ON or OFF according to machine status. I checked the signal from SCT-013 by oscilloscop and the signal is like below here. If you guys have ideas please share with me.

Best Regards.
Coskun.
 

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Engineering news on Phys.org
Welcome to PF.

I do not think you will get helpful answers unless you state your question better. What does your circuit look like? What do you observe? What do you expect to observe?
 
+1

The time axis isn't labelled. It appears to show the machine coming ON four times. Is that correct?
 

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