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Ammeter click is a mikroBUS add-on board with circuitry for measuring electric current (both AC and DC).
Two onboard screw terminals (probe+ and probe-) are bringing in the current, which then passes through a shunt resistor. A voltage proportional to the strength of the current is generated accross the resistor. This voltage passes through an amplifier before it's fed into a 12-bit ADC which then outputs a digital value through the mikroBUS SPI interface.
The firmware processes the digital value to determine the exact amperage between 1mA and 1A for DC current. It's also possible to measure AC current by deriving the value from peak to peak measurements. At the same time, the voltage can be directly monitored through the AN pin.
The board uses either a 3.3V or 5V power supply (it's important not to power the board from the same power source you wish to measure). |
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Current Click is an add-on board used for the measurement of electric current. It features an INA196 current shunt monitor, MCP3201 12-bit ADC, MAX6106 voltage reference as well as two screw terminals. The board receives current from the output circuit connected to IN(+) and OUT(-) pins of the first screw terminal connectors. INA196 IC converts this current into a voltage. The second screw terminal is used for external shunt. In order to measure current values in various bands, you need to provide the shunt of the appropriate value. Four shunts with different values are provided in the package. Current Click communicates with the target microcontroller via mikroBUS SPI or AN lines. The board is designed to work with either a 3.3V or 5V power supply. |
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Hall current click is a high precision current sensor. It carries a galvanically isolated TLI4970-D050T4 miniature magnetic digital current sensor that utilizes the Hall effect to measure electric current. It can detect current levels from -49 to +49 amps, both AC and DC. The board carries two EXTreme ZPower connectors (IP- and IP+) to connect the conductor. The current rail is galvanically isolated from the interface to the microcontroller. The sensor readings are sent to the target board through the mikroBUS SPI (SDO, SCK, and CS) lines. The board uses a 3.3V power supply only.
Hall current click can be used with dangerous voltage levels. Use caution when working with current and the Hall current click - DO NOT TOUCH THE BOARD WHILE THE EXTERNAL POWER SUPPLY IS ON! |
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AC Current click can measure alternating currents up to 30A. The board features the MCP3201 ADC (analog to digital converter) and the MCP607 CMOS Op Amp, both from Microchip. The click is designed to run on either a 3.3V or 5V power supply. It communicates with the target MCU over an SPI interface, and the AN pin on the mikroBUS™ line. |
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