(Const. load project) Managing the amperage with arduino analog signal

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Currently looking to build a DIY lipo cell capacity tester that can deliver 5 amp charge and 10 amp discharge for a single cell and this will help me greatly.
I would have a question regarding going from a potentiometer to Arduino controlled. Could you use an analog output with an op-amp gainer to supply the voltage that the potentiometer is giving? Use the Arduino to supply voltage between 0-5v and use a gain of 2 to have a signal from 0-10v and so 0-10 amp possibility?



Not really understand the question. If you want to amplify the voltage from arduino from 0-5V to 0+10V, yes, you can use an OPAMP such as the LM324 and amplify the votlage with a gain of 2.



In the following project, you have done the current selection is done through a potentiometer. I would like to use the Arduino to do this task. Would it be possible to do so with one of the analog outputs of the Arduino connected where the potentiometer is connected in your project?

https://www.youtube.com/watch?v=88xuhR30-dY

Thanks for the very fast reply.



Yes. You could use a DAC such as the MCP4725 or use a PWM signal with a filter capacitor as here: https://i0.wp.com/henrysbench.capnfatz.com/wp-content/uploads/2015/10/LM358-PWM-to-ADC.png



Thanks a lot for the info. I'll do some research on the filter capacitor value as my source will be direct 5V. Incredible respons time and incredible project on your channel.






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Creating a DIY LiPo cell capacity tester with specific among us charge and discharge capabilities, such as 5 amps charge and 10 amps discharge, is a useful project for testing and analyzing battery performance.



 I recently bought two battery capacity testers in-order to test a box of 50 used Molicel IRC18650H Slope Game cells.



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