Sensor ACS712

[mms112]

hi guys,
I'm using ACS 712 and mcp 3004 and i don't know how to read the current measurement from the sensor.
can u help me plz

[Brandon92]

Because it is the same question I copied my post to here:

can u show us the circuit plz

Did you check/read the link in this post, there are some schematics and a detailed explanation:

Maybe you should read that post
https://www.raspberrypi.org/forums/vie ... lit=acs712

I did explain all the equation there.


It will give you what we found about the ACS712, its resolution and the problem with the VCC power.
The ACS712 Vout has a VCC/2 offset so you need to read the 5V to have good readout.

Edit:
I copied this post to:
viewtopic.php?f=91&t=277847&p=1682632#p1682632

And to answer your question. What do you correctly have and was doesn't work.

[mms112]

it always give me zeros

[Brandon92]

it always give me zeros

You need to provide more information than that, because we can not see what you already tried or not. We would like to know:

• what is your code
• how did you connect everything
• a clear picture of your setup, so we can check it