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Simple and inexpensive way to make such an instrument, with which we can measure resistances with a resolution of 1 milliohm.

In practice, we very often need to measure low resistances. Measuring low-value resistances, especially those less than 1 ohm, is nearly impossible with a standard multimeter. On the other hand, an commercial milliohmmeter instrument is in the price range of several hundred dollars and is not cost effective for self builders.

This time I will describe to you a simple and inexpensive way to make such an instrument, for the production of which we will not need more than a few dollars. With this instrument we can measure the resistance of 0.001 Ohm or 1 milliom. The result is displayed on a 4-digit 7-segment display that is easy to read even at wide angles.

The ADS1110 uses an I2C interface to communicate with the microcontroller, and measures at 15, 30, 60, or 240 samples per second and has a built-in 1, 2, 4, 8 voltage amplifier. The measuring range is from 0 ohms to 150 ohms.”

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