ARDUINO LIPO BATTERY MONITOR HOW TO
ARDUINO LIPO BATTERY MONITOR SERIAL
ARDUINO LIPO BATTERY MONITOR FULL
ARDUINO LIPO BATTERY MONITOR CODE

Note that this setup can monitor the dc voltage feed through Arduino’s dc jack as well but there’s a one-diode voltage drop (0.5V to 0.8V) to consider when tweaking your code.

ARDUINO LIPO BATTERY MONITOR SERIAL

The serial monitor output you’ll get from the system then looks like this: Serial.print(batteryPercentage) Serial.println('%') Serial.print(voltage) Serial.print('VOLT, ') If (batteryPercentage > 100) batteryPercentage = 100 Įlse if (batteryPercentage < 0) batteryPercentage = 0 Voltage = voltage * (ResistorUp / ResistorDown + 1) įloat batteryPercentage = (voltage - minVoltage) / (maxVoltage - minVoltage) * 100 #define BATTERY_PIN 0 //A0įloat voltage = analogRead(BATTERY_PIN) * vRef / 1024.0

ARDUINO LIPO BATTERY MONITOR CODE

This is a simple piece of code useful for monitoring the battery percentage on the Arduino setup. As you can see there, it’s nothing but a couple of resistors wired as a potential divider! The hardware setup I use to monitor the battery status is shown below. LiPo Battery Guide Īn easy way to implement this is to make the microcontroller monitor its own battery status by using one of the analog input pins.

ARDUINO LIPO BATTERY MONITOR FULL

Quick Note: For a common 3S LiPo battery (11.1V nominal), the maximum voltage at full charge is around 12.6V, and the minimum voltage below which it should no longer be used is 10.2V. If so, the system can then display a low-battery warning message or switch itself off when the battery falls below the minimum required input voltage. This is because there’s no reverse-voltage protection on voltages applied to the Vin header.Īt this point, note that Arduino UNO Rev3 Schematic Why you need a Battery Status Monitor?Ī battery status monitor is a must-have in this application to prevent deep-discharge of the lithium battery and the brownout of the microcontroller. Warning! While powering your Arduino UNO thru the Vin header, reverse polarity of the Vin/GND power connection will kill your Arduino board. The commonly recommended input voltage here is 9VDC which is in between the recommended minimum and the maximum input voltages (7-12V).Īt this point, note that the voltage input header and the dc power jack are both connected to the same voltage regulator circuitry, which can take in voltages between 7-12V and convert them into stable 5V demanded by the AVR microcontroller. It’s clear from the official schematic that the only difference is the polarity reversal protection diode. Powering the Arduino UNO board thru the Vin female-header is basically the same as using the DC barrel jack. Obviously, this simple trick allows the onboard voltage regulator circuitry to stabilize the microcontroller power rail aright thus prevents the battery from frying Arduino’s sensitive electronics. And, as the voltage of the battery varies with use, I would always wire it through the Vin header. Usually, I’m using 3S LiPo batteries to power my standalone Arduino projects. Well, now you can go through this link to access that great post Arduino & 3S LiPo Battery! In this article, you can see an in-depth explanation of Arduino UNO’s power supply subsystem. Luckily, the Arduino’s internal power supply circuitry is designed to do the right thing no matter which recommended power source is plugged in! First off, it’s good to note down that, in addition to the USB power supply the external power sources for Arduino are linear/switching power supplies, and primary/secondary batteries of various types.

ARDUINO LIPO BATTERY MONITOR HOW TO

When you want to build a standalone Arduino project, the first thing to consider is how to power it once the setup is disconnected from the computer’s USB port.

Arduino lipo battery monitor