Arduino Monitor Solar Panel Voltage

Power for the solar monitor is connected to the voltage out of the controller. The ac current passing through the load is sensed by the current sensor module acs712 and fed to the analog pin a0 of the arduino wemos board. For measuring voltage we have to follow the given formula.

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230v ac 5v dc power supply module.

Arduino monitor solar panel voltage.

Wire is installed to sample the battery and solar panel voltage. The arduino analog input ports accept a maximum voltage of 5v. Hence the output voltage of the pv panel can be formulated as the following equation. Since the adc of the microcontroller is coded in 10 bits the resolution of the pv panel module voltage is 0 00489 v 5 1023 and the input voltage of this module must be more than 0 02445 v 0 00489 v 5.

The solar voltage monitor will stay connected to the test solar set up for a couple weeks. And suppose if you want to measure up to 10 volts then you have to use the given circuitry. In your design you can use nanoif you need the extra clock speed or possibly need to attach 5 v peripherals. Therefor the analog signals must be adapted by a circuit to match with these specifications.

Once testing is complete and updated post will be made. There is also a 5 volt arduino pro mini available that runs a 16 mhz clock. Circuit diagram of arduino based digital voltmeter. Just connect the solar panel output voltage to analog pin of arduino and convert that in digital and display result on lcd or computer.

If you decide to use a 5v arduino simply add a boost converter after the 3 3v supply amazon model xl6009 dc to dc converter. The 5v power supply module provides power to the microcontroller arduino wemos the current sensor acs712 and oled display. Voltage analog value resistor factor reference voltage.

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