Voltage Detection Module. Output Voltage Equals Input Voltage Divide by 5 with Maximum Input Voltage of 25V
Voltage Detection Module
Features
This module is designed based on the principle of resistance voltage division, which can reduce the input voltage of terminal interface by 5 times.
The input voltage of Arduino analog input voltage is greater than 5V, so the input voltage of voltage detection module can not be greater than 5V×5=25V (if 3.3V system is used, the input voltage shall not be greater than 3.3vx5 = 16.5v).
Because the AVR chip used in Arduino is 10 bit AD, the analog resolution of this module is 0.00489v (5V / 1023), so the voltage detection module detects that the input voltage is 0.00489v×5=0.02445V.
Specifications
Voltage input range: dc0-25v
Voltage detection range: dc0.02445v-25v
Voltage analog resolution: 0.00489v
DC input interface: the positive terminal is connected to VCC, and the negative terminal is connected to GND
Output interface: + "connected to 5 / 3.3V," - "connected to GND, and" s "connected to ad pin of Arduino