– This module utilizes a resistive divider design, reducing the interface terminal input voltage by 5 times. The Arduino analog input can handle up to 5V, limiting the voltage detection module input to a maximum of 25V (or 16.5V for a 3.3V system).
– With Arduino AVR chips utilizing 10-bit ADC, the analog module’s resolution is 0.00489V (5V / 1023). This results in a minimum detectable input voltage of 0.02445V.
– Voltage input range: DC0-25V
– Voltage detection range: DC0.02445V-25V
– Voltage analog resolution: 0.00489V
– Positive terminal connects to VCC
– Negative terminal connects to GND
– “+” corresponds to 5V (or 3.3V)
– “-” connects to GND
– “s” links to the Arduino AD pin
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