Description:
<br />A simple but very useful module which uses a potential divider to reduce any input voltage by a factor of 5. This allows you to use the analogue input of a microcontroller to monitor voltages much higher than it capable of sensing. For example with a 0-5V analogue input range you are able to measure a voltage up to 25V. The module also includes convenient screw terminals for easy and secure connection of a wire.
<br />This module is based on principle of resistive voltage divider design, can make the red terminal connector input voltage to 5 times smaller. foe Arduino analog input voltages up to 5 v, the voltage detection module input voltage not greater than 5Vx5=25V (if using 3.3V systems, input voltage not greater than 3.3Vx5=16.5V).
<br />For Arduino AVR chips have 10-bit AD, so this module simulates a resolution of 0.00489V (5V/1023), so the minimum voltage of input voltage detection module is 0.00489Vx5=0.02445V.
<br />Voltage input range : DC 0-25 V.
<br />Voltage detection range : DC0.02445V ¨C 25V.
<br />Voltage analog resolution : 0.00489 V.
<br />Output Interface : ¡°+ ¡± connected 5/3.3V, ¡°-¡± connected GND, ¡°s¡± connected for Arduino AD pins.
<br />DC input interface : red terminal positive with VCC, negative with GND.
<br />By 3P connector, connect this module with the expansion of board for Arduino, not only makes it easier for you to detect voltage battery, can also use the IICLCD1602 LCD to display voltage.
<br />Size: 25mm¡Á13mm/0.98¡å¡Á0.51¡å(approx).
<br />Specification:
<br />Divider ratio: 5:1.
<br />Resistor Tolerance: 1%.
<br />Max input voltage: 25V.
<br />Resistor Value: 30K/7.5K Ohm.
<br />Package content:
<br />1 x 25V Sensor Module.