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Connect SCT013 with ADS1115/RaspberryPi
December 23, 2020 2:00 AM
A current transformer SCT013 ( https://www.seeedstudio.com/Non-invasive-AC-Current-Sensor-20A-ma-p-2054.html ) has a 3.5 mm jack at the end.
How do I physically connect this jack to an ADC like ADS1115 which has male header pins to receive analog signals?
I have seen some documentation wherein people have cut the cable of SCT013, soldered it to a male header pin; and then connected it to ADS1115 with F-F jumper cables.
However, is there any way out to interface this SCT without cutting the cable?
If you could please let me know how do we go about this, I would be very much thankful.
This topic was modified 3 weeks ago 4 times by ranjanpal
December 23, 2020 3:59 AM
Ehm, I'd consider either cutting the cable, or ordering a male connector (3.5mm stereo / Sony male jack - matching the female connector) and wire that to the ADC so you can easily remove or replace the SCT013.
This seem quite trivial, so maybe I did not understand your question?
December 23, 2020 4:36 AM
Thanks a lot for your suggestions.
I referred to following youtube video (
at 7:10 video timer.)
Instead of soldering the wire to male header pins, can I directly connect the red and white wires of the SCT (that has been cut) to GPIO pins of micro-controller using F-F jumper wires?
December 23, 2020 4:45 AM
It seems you may not want to connect the SCT directory to the Arduino.
A quick look makes me think he actually uses some sorts of voltage divider before connecting it to the Arduino.
I would assume he does this for a very good reason 😉
December 23, 2020 5:16 AM
Hmm, that is interesting (and well hidden haha).
From what the spec sheet tells us, I think you're right.
0-1V should be just fine for the Analog pin on an Arduino.
Keep in mind though:
I do not have the equipment here to test and you may blow up your Arduino worse case scenario (even though be very unlikely).
Personally: I'd just connect it directly, relying on the specs (0-1V output) and being very aware that any experiments I do with my Arduino could damage it.
I also have to say that with all the silly things I have done with my Arduino, I can only say that they are quite resilient.