For schematic and code visit my WebsiteARDUINO BASED MPPT SOLAR CHARGE CONTROLLER

what is Mppt( Maximum power point tracking) ?

"we use MPPT algorithm to get the maximum available power from the Photovoltaic module under certain conditions"

How MPPT works ? Why 150W solar panel does not equal to 150 w?

For example you bought a new solar panel from the market which puts out 7 amps. under charge the setting of a battery is configured to 12 volts : 7 amps times 12 volts = 84w (P=V*I) You lost over 66 watts - but you paid for 150 watts. That 66 watts is not going anywhere, but it,s due to the poor match of the solar output current and battery voltage .

After using MPPT algorithm we can get the Maximum available power

Battery gets is now 12 amps at 12 volts Output power is equal to p= V*I p=12*12=144w Now you still have almost 144 watts, and everyone is happy.

Specification of the project 1.This project is Based on MPPT(Maximum power point tracker) algorithm 2. LED indication to show the low mid and high level of charge stat 3. LCD (20x4 character ) display for displaying power,current,voltages etc 4. Lightning /Over voltage Protection 5. Protection For Reverse power flow 6. Over load & Short Circuit protection 7. Logging data through WiFi 8.Charge your Cellphone, tablets any gadgets throug USB port Electrical specifications : 1.Rated Voltage= 12V 2.Maximum input current = 5A 3.Load current support upto =10A 4. In put Voltage = Solar panel 12 to 24V 5.power of Solar panel = 50 Watts


Resistors ( 3 x 200R ,3 x330R,1 x 1K, 2 x 10K, 2 x 20K, 2x 100k, 1x 470K )

TVS diode ( 2x P6KE36CA )

Arduino Nano

( ACS712-5A ) Current Sensor

Buck Converter ( LM2596 )

Wifi Module ( ESP8266 )

LCD display ( 20x4 I2C )

MOSFETs ( 4x IRFZ44N )

MOSFET driver ( IR2104 )

3.3V Linear regulator ( AMS 1117 )

Transistor ( 2N2222 )

Diodes ( 2x IN4148 , 1 x UF4007 )

Capacitors ( 4 x 0.1 uF, 3 x 10uF ,1 x100 uF ,1x 220uF)

Inductor ( 1x 33uH -5A )

LEDs ( Red ,Yellow ,Green )

Fuses ( 5A)


rudi_black (author)2016-01-07

Hi.. does not MPPT also designed to convert from higher V-in to higher I-out lower V-out?
if yes, then what is needed to modify your setup to handle this case?
many thx..


buck converter

Ramyamchaitra (author)2016-05-16

Can i get d connections of buck converter ? N even the lcd display two more days to complete our project plz need help :(

shahreeno (author)2016-05-12

hi, nice project..

from the schematic the buck converter connector output pin is connected at 5V arduino pin. is suppose to be connected there or Vin arduino pin?

About This Instructable




Bio: Electronicslovers started in July 2011 with the mission to produce ideas to student and engineer or hobbyist to learn electronics practically. Electronicslovers provides information by ... More »
More by Electronicslovers:Check Electricity Meter Reading Wirelesly Using Arduino and GSM ModuleHow to Add Arduino Gas Sensor Library in to Proteus 7 & 8A Burglar Alarm Based on PIR Sensor With Sms Alert Using 8051
Add instructable to: