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Multimeter click is a Click board™ designed to measure voltage, current, resistance, and capacitance properties of the components, connected to the input terminals. Each property measurement is done on a separate terminal. Each measurement section conditions the input signal from the respective input terminal and forwards it to a four-channel 12-bit A/D converter. All the inputs are equipped with the differential amplifiers, that allow both positive and negative signals to be measured. By utilizing the binary-to-decimal converter IC, it is possible to select the optimal range for the resistance measurement. Low internal resistance of only 0.1Ω for the current and high resistance of 1MΩ for the voltage measurement section, ensure no interferences with the measured circuitry, caused by this Click board™.
EXPAND 3 click carries DS2408, an 8-channel programmable I/O expander that communicates with the target board MCU through a standard Dallas Semiconductor 1-Wire interface (15.3 kbps or 100kbps).