![]() Add in a few resistors, led, mosfets to turn on when we want to measure the voltage. I’m thinking of using the nRF24L01 module (as it’s pretty low cost), using an ATtiny24/44/84 which should give us 6S support and have it powered from the first cell of the LiPo, it shouldn’t take too much current from the first cell as we stay in sleep/power down most of the time. I’ve tried to be better now, checking packs every month, I’ve got some old packs for the RC car that hardly get used so I wrote down the idea to do battery storage voltage monitoring a few months ago so let’s make it happen. Initialize the LCD library with I2C address and LCD sizeĪdc_voltage = (adc_value * ref_voltage) / 1024.When finding out that one cell of my 3x 4S 1300mAh batteries were discharged to 3.3-3.4V (other cells were 3.7-3.8V) after not flying for 2-3 months, I was a bit surprised, these batteries were one of my first batteries purchased about 1.2 years ago. Floats for resistor values in divider (in ohms) Floats for ADC voltage & Input voltage measuring DC Voltage using Arduino and voltage sensor up to 25Volts Not only Arduino UNO microcontroller but also you can use Arduino NANO, etc., The communication pins SDA and SCL are connected to A4 and A5 of Arduino respectively. The power pins VCC and GND of LCD display are connected to 5V and GND of Arduino. The LCD display has 4 pins 2 pins for power and 2 pins for communication. On the other side the voltage to be measured whose +ve and -ve pins are connected to VCC and GND respectively. The – pin of sensor is connected to GND pin of Arduino. ![]() Circuit Diagram to interface voltage sensor with ArduinoĬonnect all the required components according to the below circuit diagram.Īs you can see from the above circuit diagram the voltage detection sensor module signal pin S is connected to Analog pin A0 of Arduino. Follow the below schematic diagram to build own voltage sensor with range 0-25V DC.Īs you can see from the above 2 resistors are connected in series and signal pin is connected between them. This circuit reduces the voltage by 5 times. we can even build the circuit by our own with a very few components as 2 resistors 7.5KΩ and 30KΩ. GND: Negative terminal for the external voltage source (0-25v)īuild Own voltage sensor using below Schematic diagram:Īs we already discussed this sensor works with the principle of voltage divider circuit.VCC: Positive terminal for the external voltage source (0-25v).3 pins are male head connectors which are to be connected to Arduino and other 2 pins has a plastic screw pin terminals where the voltage to be measured is connected. Voltage detection range: DC 0.02440V-25Vįrom the above pinout diagram we can notice there are 5 pins to voltage sensor module. ![]() Related: Measure AC current by interfacing ACS712 sensor with ESP32 Technical specifications: For 3.3V system the input voltage should not be greater than 16.5v as 3.3X5=16.5.For 5V systems the input voltage should not be greater than 25V.Which makes the voltage 5 times smaller, 25/5=5 thus with this we can measure up to 25V.Īrduino AVR chips have 10-bit ADC, so this module simulates a resolution of 0.00488V (5V/1024), so the minimum voltage of input voltage detection module is 0.00488Vx5(for 25v)=0.02440V. With the help of it the voltage is divided by 5. This Voltage sensor is small and low cost module whose principle is based on Resistive voltage divider circuit. Voltage Detection sensor Module overview: So, in this article we teach you, the principle of this voltage sensing module, how it works and how to interface it with Arduino and display the voltage values on 16X2 LCD display with I2C adapter and where it is useful. So, with the help of this Voltage sensor we can measure up to 25V from Arduino Analog pins. ![]() This works as a DC voltmeter with maximum 25V.Īs you all know Arduino and few other microcontroller can measure up to 5V directly from the analog pins, but if you want to measure the voltage beyond 5V, it is not possible and even if you connect more than 5V the chip may get damaged or burnt. In this Arduino Project, you will learn how to build an Arduino voltage sensor which can measure the DC voltages ranging from 0 to 25 Volts.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |