DougieLawson wrote: ↑

Fri Dec 21, 2018 9:48 am

I don't think I can help much more. I've got MCP3008s but I don't have an ACS712 hall-effect sensor (and it would be 2019 before I can get one).

Thank you for your help
I continue my research and if I find I will say the solution here (and I really hope to find the solution )

Test it on your Arduino again. It works, if I plug a charge, I get good current on my Serial print (50mA) Test the MCP3008 with a potentiometer wired between Vref & AGND with the wiper connected to CH0 (pin#1). It also works, I test with multimeter, I have the same voltage display in my terminal I ...

I have just tried your code and I get the same result, with or without the voltage is the same.
I tried to redo a voltage measurement with the mcp3008 on channel 0 and it works. I'am sure that my ACS712 works and MCP3008 too

Have you grounded any unused analog pins on the MCP3008? What the voltage between the Vref (pin#15) and AGND (pin#14)? Thanks for your reply, Yes all unused analog pins are connected to the ground, and between Vref and AGND I have 5.06V. I really don't understand why analog output from ACS712 are t...

Hi all, I'am trying to use one ACS712 with MCP3008 and Raspberry, but I'm having problems. If I use my ACS712 with Arduino everything works well, I get good measurement current . But now I want to use this with my Raspberry. I use a MPC3008,ACS712 output is analog value. But when I try to read curre...