Current meters & Voltage meters
It is often important to know how much current is flowing or what the voltage is in a circuit. With these sensors, you can measure those values in different ways. The sensors are of course suitable for use with an Arduino.
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Comparator module LM393
A comparator module based on an LM393.
By means of the adjustable resistor you can control at which voltage the digital signal goes from 0 to 1 (an LED on the board will then also light up).
With 2 pins for input voltage and 4 pins with VCC, GND, AO (analog out), DO (digital out (on/off).
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Current Meter/Ammeter + Voltage Meter - INA3221
Current meter/Ammeter + Voltage meter with INA3221 chip.
Arduino library: https://github.com/switchdoclabs/SDL_Arduino_INA3221 In stock -
Current Meter/Ammeter + Voltage Meter 26V ±3.2A - INA219
The INA219 is a really cool little device that not only measures current, but also voltage. With a little multiplication you can even measure power.
In terms of voltage you just blow past the Arduino 5 volt limitation. You can even measure up to 26 VDC with the INA219 sensor.
At +/- 3.2A the current measurement range is suitable for most smaller ... In stock -
Current Meter/Ammeter 30A AC Contactless - YHDC SCT-013-000
Measure current without contact with this current meter based on the YHDC SCT-013-000.
The clamp is placed around the cable through which the current you want to measure flows. You do not have to interrupt the current circuit and your measuring circuit remains separated in this way.
Please see the website link below for a connection example. In stock -
Current meter/Ampere meter 20A AC/DC - ACS712
With this ACS712 sensor you can measure both alternating and direct current up to a maximum of 20A.
Suitable for measuring 230V mains voltage.
Sensor chip: ACS712ELC-20A
Connection voltage Vcc: 5V
The sensor module can measure 20A positive and negative. The output is 100mV per measured Ampere.
If no current is measured, the output is Vcc/2.
So a... In stock -
Current meter/Ampere meter 5A AC/DC - ACS712
With this ACS712 sensor you can measure both alternating and direct current up to a maximum of 5A.
Suitable for measuring 230V mains voltage.
Sensor chip: ACS712ELC-05B
Connection voltage Vcc: 5V
The sensor module can measure 5A positive and negative. The output is 185mV per measured Ampere.
If no current is measured, the output is Vcc/2.
So at ... -
External shunt resistor FL-2 0.5% - 100A 75mv
External shunt resistor for measuring high current up to 100A.
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USB Charger Doctor - In-line Voltage and Current Meter
Help! This patient is heating up! Is the voltage too low? Is the current draw too high? Is there a doctor in the house? Oh, thank goodness, the Charger Doctor is here! Right on time...Doctor, can you tell us what the current draw is? What about the voltage? Thanks to the Doctor, you will now be able to watch and care for your USB-powered projects.
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USB Discharge Tester with Switch 1A/2A
For testing power banks in combination with a USB current meter/voltage meter (see additional articles).
Switchable between a load of 1A/5W (LED lights green) and 2A/10W (LED lights red).
Attention! When loaded, the resistors on the tester become hot!
Keep the resistors clear of surfaces.
Dimensions: 72mm x 17mm In stock -
Voltage meter / voltage divider up to 25V
This DC voltage sensor can detect voltage from 0 to 25V. Sensor is based on resistance points pressure principle, and it can make the input voltage of red terminal reduce 5 times of original voltage.The max Arduino analog input voltage is 5 V, so the input voltage of this module should be not more than 5 V x 5 = 25 V ( if for 3.3 V system, the inpu...
In stock
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