3/24/2021 0 Comments Arduino Battery Charger
Reply Chavan Swaraj Balasaheb says Thank you Can you suggest me battery Level indicator circuit for 3.7v 2.6Ah lithium ion battery cell Project detail:- We have made a charging station project for electric bikes.If you are interested in monitoring and maintenance of your 12V battery, this circuit might become handy.Why Battery Level Monitoring is Crucial All batteries have certain voltage limit to discharge, if it goes beyond the prescribed limit, the life span of the battery will reduce drastically.Being electronics enthusiasts, we all might have a battery for testing our prototype circuits.
Since we concentrate on the prototype during experiment, we care less on the battery. The proposed battery charger circuit will show you how much energy left in the battery, this circuit may be connected to battery, while you prototyping your circuits. When this circuit indicates low battery, you may put the battery to charge. The circuit has 6 LEDs, one LED glow at a time to indicate the voltage level of the battery. How it Works The circuit consists of Arduino which is the brain of the system, a potential divider which helps the Arduino to sample the input voltage. Calibrating LED Indicators The relation between LED and battery level is given below: LED1 100 to 80 LED2 80 to 60 LED3 60 to 40 LED4 40 to 20 LED5 20 to 5 LED6 - The Arduino measures a narrow range of voltage from 12.70V to 11.90V. A fully charged battery should have voltage above 12.70V after disconnecting from charger. A low battery voltage must not go below 11.90V for a 12V sealed lead-acid battery. When you turn on the circuit, it starts with LED test, where the LEDs glow up sequentially with some delay. Set the voltage of your variable power supply to precisely to 12.50V. Open the serial monitor. Rotate the preset resistor clock wise or counter clock wise and bring the readings to 12.50V. Now, reduce the variable power supply to 12.00V, the readings on the serial monitor should show the same or very close to 12.00V 5) Now, increase the voltage to 13.00V, the readings on serial monitor should also show the same or very close. At the same time when you increase or decrease the voltage, the each LED should turn onoff with different voltage levels. Once the above steps are done successfully, your battery level indicator circuit will be ready to serve the intended purpose. Adding an Auto Cut Off The above explained Arduino battery level indicator circuit can be further enhanced by including an automatic battery full charge cut-off facility. The following figure shows how this may be implemented in the existing design: Previous: 1.5V Power Supply Circuit for Wall Clock Next: Material Storage Level Controller Circuit About Swagatam I am an electronic engineer (dipIETE ), hobbyist, inventor, schematicPCB designer, manufacturer. I am also the founder of the website:, where I love sharing my innovative circuit ideas and tutorials. If you have any circuit related query, you may interact through comments, Ill be most happy to help Youll also like: 1. Required fields are marked Comment Name Email Notify me via e-mail if anyone answers my comment. Arduino Battery Charger How To Write TheI dont know how to write the program but I need if for a 9 volt battery and I need it to work with 5 LEDs. I also need the LEDs to be able to dim with a potentiometer from 100 bright to 0 (completely dark). Do you think you can help me with that I will be eternally grateful. Reply Swagatam says Thank you Tyler, however, my Arduino knowledge is also not good enough, so I wont be able to guide you with the required code modifications, and related info Reply Chavan Swaraj Balasaheb says Hello sir, Im Swaraj Chavan. I have a question What is the role of 330ohm resistance in the circuit Reply Swagatam says Swaraj, it is to protect the LEDs from over current.
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