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This module is based on a resistive divider principle design, make the interface terminal input voltage reduced 5 times, for Arduino analog input voltage up to 5V, then the input voltage of the voltage detection module can not be greater than 5V × 5 = 25V (if used 3.3V system, the input voltage can not exceed 3.3Vx5 = 16.5V). Because for Arduino AVR chips used in 10 AD, so the resolution of the analog module is 0.00489V (5V / 1023), so the voltage detection module detects a minimum input voltage of 0.00489V × 5 = 0.02445V.
Specification:
Voltage input range: DC0-25V
Voltage detection range: DC0.02445V-25V
Voltage Analog Resolution: 0.00489V
DC input connector: Terminal cathode connected to VCC, GND negative pole
Output interface:
+ 5V or 3.3V
- GND
S for Arduino AD pins
Package included:
10 X Voltage Sensor
Clarence Montgomery
Reviewed in the United States on December 31, 2024
Seems to work as advertised. Thanks!
Bob Loeffler
Reviewed in the United States on September 17, 2023
How do we power an esp8266 microprocessor with the battery while also checking the voltage with the voltage sensor? As soon as I unplug the USB cable, there is no power to the esp8266 anymore. I tried plugging a jumper wire onto the sensor's + pin and the other end to the 3V3 pin on the 8266, but that doesn't give it power. I also tried connecting the jumper wire to the 5V pin on the 8266, but still no power. If I connect the battery's wires directly to the 3V3 pin via a breadboard, my 8266 works fine. Anybody have any ideas? Is there any documentation for this Voltage Sensor board?
Warren
Reviewed in Canada on October 17, 2022
These boards work very well. I am able to send the voltage from a 12V battery to the A0 pin. No problems.With the correct code on the ESP8266 I can get and display the voltage from my 12V battery.
Trevor
Reviewed in the United States on December 16, 2021
Works good once you measure the actual resistance and incorporate those numbers in the program.
Daniel Rutledge
Reviewed in the United States on July 15, 2020
Works good. Slight varience in readings. Using with mcp3008 for reading voltage on raspberry pi. If you use this with raspberry pi make sure to use 3.3v to not burn out your gpio. And to stabalize readings pull multiple times and average reading. Adafruit mcp3008 tutorial works perfect.
Jae
Reviewed in the United States on March 23, 2020
Each and every one of the lot works perfectly.
Customer Review
Reviewed in the United States on March 20, 2019
These little modules work just fine for measuring voltage. Although anyone could easily make their own, these are so cheap, why bother making your own
Jerry
Reviewed in the United States on December 17, 2019
works well
S. A. ROBBINS
Reviewed in the United States on November 23, 2019
These are actually Divide By 5 Voltage Dividers consisting of 30K and 7.5K resistors. Accuracy is fair, about 1% and good enough for most applications. I am using them to scale down 50 watt solar panel voltages to within the 0-5 volt range of the Arduino Pro Mini's A/D inputs and they work good. Connections to the modules are a little strange but not a problem. For future projects though I will use individual 0.1% 30k and 7.5k resistors which I found recently at very good prices.
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