#Battery guard android how to#
I have a very detailed tutorial on how to change Pin code or password and how to change the name of a Bluetooth module using At commands. This is the Hc-05 Bluetooth module, it doesn’t matter if you use Hc-05 or Hc-06. Enough with the voltage sensor, now let’s talk about the Bluetooth module.īluetooth Module used in the wireless battery monitoring system: as the current is in microamps it won’t heat up the resistor.
#Battery guard android series#
So as the resistors are connected in series so the same current will flow through both the resistors. So with these resistor values, we can monitor voltages up to 25v maximum. If we increase the voltage above 25v the output voltage will increase and so will damage the analog Pin of the controller. We can find out the Output voltage, by using the voltage divider formula which is The maximum input voltage of this module is = 25 volts dc. Let’s perform calculations for this circuit. I recommend you should watch this tutorial for the best understanding.Īs you can see the values of the resistors used in this module are 30k and 7.5k. A few days back I uploaded a tutorial on Electronics Voltage Divider Circuit Basics, Practical use of Voltage divider, Datasheet & calculation. It simply consists of two resistors connected in series, which makes a voltage divider circuit. Let’s have a look at the circuit diagram of the voltage sensor, The input voltage of this module should be more than. The maximum Arduino analog input voltage is 5 VĪrduino AVR chip has 10 bit AD “Analog to digital converter” So
Now the question is how we know that the input voltage should be greater than. while the + Pin is not connected.Īs in the beginning, I said that we can measure dc voltages ranging from. The S Pin of the sensor module will be connected with the analog Pin of the Arduino Uno or Mega and the – Pin will be connected with the ground of the Arduino. On the other side, we have three male headers labeled as +, s and. The Voltage wire is connected with the VCC terminal and the ground is connected with the GND terminal. You can find that video on my YouTube channel.Īs you can see on one side we have a block terminal, this is where we connect the voltage and ground wires coming from the battery, solar panel, or any other source. But if you want to measure voltages higher than 25volts then you can watch my tutorial on how to modify this voltage sensor for monitoring higher voltages, in this tutorial I performed all the calculations. This is the Voltage sensor Module that we will be using for monitoring the battery voltage, This Module is capable of measuring the voltages ranging from 0.02445v to 25volts dc. I would appreciate your support in this way! I may make a commission if you buy the components through these links. This time I made a few changes, I added the long-range NRF24L01 Transceiver modules to increase the range.ĭownload the Bluetooth App: BlueserialApp battery Recently I uploaded another article on the battery voltage monitoring system “ Long Range Wireless Battery Voltage Monitoring System using NRF24L01 and HC05 Bluetooth“. This wireless battery voltage monitoring system can also be used for monitoring the Solar Panels, in fact, you can monitor anything so far the voltage that is to be monitored is less than or equal to 25volts.
#Battery guard android android#
In this tutorial, you will learn how to make your own wireless battery voltage monitoring system using Arduino, a Bluetooth module, and an Android cell phone. Wireless Battery Monitoring Project Description:
Circuit Diagram of the wireless battery monitoring system:.Bluetooth Module used in the wireless battery monitoring system:.Wireless Battery Monitoring Project Description:.
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