The only limitation I can see is the time it will take the test, but this is not an issue for my needs.
Is there something else that will require a hardware change?
Just the 30 odd Ampere test current The tester can deliver 7mA (safely).
I think I need to better detail my initial intention...
We don't need to push 30A on the capacitor to measure C and ESR
It will be fine to use 2 or 3 amps to perform the measure safely in few minutes.
I made some tests with a constant current PSU (set at 2V and 2A) and an oscilloscope, and for the purpose of my project I can verify my 350F Ultracaps easily and precisely.
Just to prove the concept of using my M12864 to automate the measure, the idea was to just have a specific firmware function to control a constant current source ,a dummy load (for the discharge) and read the values of C and ESR with the M12864.
Of course I will need to add external hardware to provide the extra current/sink, and modify the firmware to extend the measure time, but theoretically should work.
In this days I made the last mod on the case, adding a slot for the ICSP and another to easily connect to the UART, to the Frequency counter and to the PWM/square wave output (see picture)
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Mauro