Voltage Sensor
BD 7.500
The Arduino analog input is limited to a 5 VDC input. If you wish to measure higher voltages, you will need to resort to another means. One way is to use a voltage divider.
It is fundamentally a 5:1 voltage divider using a 30K and a 7.5K Ohm resistor.
Keep in mind, you are restricted to voltages that are less than 25 volts. More than that and you will exceed the voltage limit of your Arduino input.
INPUTS
- GND – This is where you connect the low side of the voltage you are measuring. Caution! : This is the same electrical point as your Arduino ground.
- VCC: The is where you connect the high side of the voltage you are measuring
OUTPUTS
- S: This connects to your Arduino analog input.
- – (or minus): This connects to your Arduino ground.
- +: This is not connected. It does absolutely nothing… zilch… nada… jack diddly doo doo.
SCHEMATIC
The schematic for this is pretty straight forward. As previously mentioned, its just a couple of resistors. In fact, you could build your own in a pinch.
Choose Quantity
Product Details
Input voltage range: DC0-25V
Voltage detection range: DC0.02445V-25V
Voltage analog resolutions: 0.00489V
DC Input: positive terminal connected to VCC, GND negative pole
Output interface: “+” then 5 / 3.3V, “-” then GND, “s” then the AD Arduino pin