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Milliohm Meter - Electronics For You
Accurate Milliohm Measurement – Kerry D. Wong
Open hardware Milliohmmeter, microohmmeter, microvoltmeter, and accurate ESR meter based on STM32F373 processor and AD8253 instrumentation amplifier (DIY do it yourself hobby construction)
Battery-Powered Circuit Measures Milli Ohms and Micro Ohms