Arduino for measuring Farads (vs micro/pico farads)
To measure capacitance requires either measuring (a) impedance versus frequency, or (b) dV/dt versus current.
The problem with measuring pF range capacitors is that of stray capacitances swamping the device under test (DUT). High impedances for (a) or low currents and short times for (b) are difficult to realise. Similarly, but less so, for nF ranges.
μF to mF are generally easy to measure, reasonable impedances, and reasonable currents.
When you get to Farads, you may have problems with the software. Generally only method (b) is used for this range. Some people who make meters for lower ranges may simply not bother providing high enough charging currents, or long enough reading times, to measure this high. There's no fundamental problem, if you wait long enough, but the firmware of particular meters may not allow you to. The maximum capacitance measurement specification will reflect the charging current and the maximum measurement time they've allowed.