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AttoPilot Voltage and Current Sense Breakout - 45A
Price: $38.16
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Sparkfun Item #: SEN-10643 -

"This is a small voltage and current sense PCB. DC current is determined by measuring a voltage drop across a pair of parallel shunt resistors, then converted to a final analog voltage output by the TI INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. The PCB is supplied without leads or connectors. The pad sizes are large enough to accommodate 12 gauge heavy duty leads (see datasheet) but care must be exercised in soldering. Smaller gauge...

Gravity: Analog 20A Current Sensor
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Price: $25.38
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DFRobot Item #: SEN0214 -

This Gravity Analog 20A current sensor is based on the Hall current sensing principle. It can be used for AC or DC current measurement, has a wide voltage range, a small footprint, requires no soldering and has a high level of precision.We have added high-voltage isolation in the circuit design for safety reasons and a non-conductive acrylic plate has been attached to the bottom of the PCB to prevent accidents such as short circuits, electric shocks and any other potential danger.This...

Gravity: Analog 50A Current Sensor (AC/DC)
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Price: $25.08
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DFRobot Item #: SEN0098 -

This is a breakout board for the fully integrated Hall Effect based linear ACS758 current sensor. The sensor gives precise current measurement for both AC and DC signals.The thickness of the copper conductor allows survival of the device at high overcurrent conditions. The ACS758 outputs an analog voltage output signal that varies linearly with sensed current. This current sensor enables you to monitor currents in your project every second for energy saving or circuit protecting purposes. This...

Gravity: Analog AC Current Sensor
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Price: $34.30
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DFRobot Item #: SEN0211 -

nt to measure AC current it is impractical and hazardous to cut in to your live wiring. The analog AC current sensor developed by DFRobot is a good solution to this problem. Using induction you can measure AC current without intrusive methods. Place your AC wire inside the unit, connect the unit to the sensor board using the 3.5mm jack connector and connect the sensor board to an analog input on your microcontroller. Use this sensor to measure AC motors, lighting equipment, air compressors or...

KR Sense Current and Voltage Sensor - 45A
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Price: $38.44
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Sparkfun Item #: SEN-16407 -

The KR Sense 45A is a small voltage and current sense breakout board. DC current is determined by measuring a voltage drop across a parallel shunt resistor, then converted to a final analog voltage output by the INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. This version of the sensor features a maximum voltage tolerance of 51.8V at 44.7A, to be exact. Please be aware that KR Sense boards are supplied without leads or connectors. The pad...

KR Sense Current and Voltage Sensor - 90A
Price: $38.44
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Availability: Out of Stock
Sparkfun Item #: SEN-16408 -

The KR Sense 90A is a small voltage and current sense breakout board. DC current is determined by measuring a voltage drop across a parallel shunt resistor, then converted to a final analog voltage output by the INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. This version of the sensor features a maximum voltage tolerance of 51.8 Volts at 89.4 Amps, to be exact. Please be aware that KR Sense boards are supplied without leads or connectors....

Non-Invasive Current Sensor - 30A
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Price: $17.57
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Sparkfun Item #: SEN-11005 -

This non-invasive current sensor (also known as a "split core current transformer") can be clamped around the supply line of an electrical load to tell you how much current is passing through it. It does this by acting as an inductor and responding to the magnetic field around a current-carrying conductor. By reading the amount of current being produced by the coil, you can calculate how much current is passing through the conductor. This particular current sensor will measure a load up to 30...

SparkFun Coulomb Counter Breakout - LTC4150
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Price: $24.63
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Sparkfun Item #: BOB-12052 -

Odometers are extremely useful for cars, they tell you how far you have gone, wouldn't it be nice if you were able to have a device that does the same for electrical current? The LTC4150 SparkFun Coulomb Counter Breakout is here to be your odometer for current. If you are wondering: a coulomb is defind as, to put it simply, one amp for one second. This breakout is capable of constantly monitoring the current your sensor is using, is able to add it up, and will give you a pulse each time a...

SparkFun Current Sensor Breakout - ACS723
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Price: $15.80
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Sparkfun Item #: SEN-13679 -

The SparkFun Current Sensor Breakout is a high accuracy board that utilizes the ACS723 for moderate AC and DC current sensing applications. The ACS723 sensor uses a Hall effect sensor to output a voltage relative to the current flowing through the IP+ and IP- pins on the board. The advantage of using a Hall effect sensor, specifically, is that the circuit being sensed and the circuit reading the sensor are electrically isolated meaning that, although your Arduino is running on 5V, the sensed...

SparkFun Current Sensor Breakout - ACS723 (Low Current)
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Price: $28.16
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Sparkfun Item #: SEN-14544 -

The low current version of the SparkFun Current Sensor Breakout is a high accuracy board that utilizes the ACS723 for low to moderate AC and DC current sensing applications. The ACS723 sensor uses a Hall effect sensor to output a voltage relative to the current flowing through the IP+ and IP- pins on the board. The advantage of using a Hall effect sensor, specifically, is that the circuit being sensed and the circuit reading the sensor are electrically isolated meaning that, although your...

SparkFun Current Sensor Breakout - INA169
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Price: $17.57
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Sparkfun Item #: SEN-12040 -

The INA169 is a “high-side current monitor,” which means that you place a resistor (a “shunt resistor”) on the positive power rail and the INA169 measures the voltage drop across that resistor. The INA169 outputs a small current based on the measured voltage drop. If you place a resistor from the output of the INA169 to ground, you can measure the voltage at the output. Input common-mode and power supply voltages are independent and can range from 2.7V to 60V on the INA169 and quiescent...

Zio Current and Voltage Sensor - INA219 (Qwiic)
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Price: $16.29
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Sparkfun Item #: SEN-15176 -

The Zio Current and Voltage Sensor is a highly accurate current and power monitor. Utilizing the INA219, it's able to read DC current and power over I2C with up to 1% precision. This is a great fit for a variety of applications, including estimating battery life, tracking solar power generation, or monitoring electricity consumption. This sensor can measure voltage up to 26VDC and current up to 3.2A. The I2C interface makes it easy to daisy chain multiple devices and receive data via the Qwiic...