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Measuring current over time
Moderators: adafruit_support_bill, adafruit

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Measuring current over time

by DilvishEhldar on Mon Feb 04, 2019 1:55 pm

When I measure current in my circuits I often see the display jumping around wildly. It will down in the 10mA range then I'll see a few numbers hit 200-500mA. I am not surprised by this, as I am definitely doing things that will vary the current... manipulating NeoPixels for example. What would be great is a tool that would capture current samples, graph them and let me add them up (with interpolation) to calculate the total mAh pulled during a time period. Maybe a multi-meter with a PC connection via a USB cable to software that would do this. I have googled a fair amount but have not had any luck yet.

Any suggestions would be appreciated.

DilvishEhldar
 
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Joined: Sun Aug 12, 2018 2:58 pm

Re: Measuring current over time

by adafruit_support_bill on Mon Feb 04, 2019 2:05 pm

We do have current measurement sensors that can be connected to an Arduino or Raspberry Pi to collect the data and relay it to your computer:
https://www.adafruit.com/product/904
https://www.adafruit.com/product/1164

adafruit_support_bill
 
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Re: Measuring current over time

by DilvishEhldar on Mon Feb 04, 2019 2:19 pm

This is great. I can build my own little meter with this breakout board, capture the data and do anything I want with it. Too bad last last order just shipped, I could have added this in. I swear shipping costs are going to kill me.

Thanks!

DilvishEhldar
 
Posts: 14
Joined: Sun Aug 12, 2018 2:58 pm

Please be positive and constructive with your questions and comments.