MPPT Solar Charger Prototype | 12V Lead-Acid Battery | Bulk Absorption Float

🔥This is my first prototype for the MPPT controller and I will post more results and a better version soon. Also a custom made PCB with everything ready.

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#Arduino
#MPPT
#Solar

[WereCatf]

This is not an MPPT-charger, it's just a lead-acid battery charger. MPPT specifically refers to extracting maximum power from the solar-panel; it keeps track of the voltage and current of the panel and adjusts the current so that the panel is always supplying as much power as it can. A simple approximation would be to periodically check the panel's open-circuit voltage and then keep the voltage at 80% of that.

[OstrowskiMariusz]

This is the battery charging controller only. For MPPT you need to implement additional algorithm, for example the constant voltage or perturb and observe method. However this is good base for start. Good job.

[MiniLuv-]

Looking forward to the MPPT control where the peak power point is continuously tracked. Thanks for a great video.

[mlab]

Where is MPPT Algorithmm? Do I miss something??

[metamud]

6:14 warning: missing snubber / flyback diode on relais schematic. Everytime the relay switches off a high peak current is now endangering Q3, your BC547.
Could use, e.g., a 1n4007 positioned on pins 2 and 5 so that current can flow TOWARDS the positive (pin 5, +5V) side.

[MartynDerg]

I'm not going to be attempting to build an MPPT controller but I am in the market to buy one and wanted to learn exactly how it works, and you delivered exactly that, the educational value of this video is brilliant, I feel I understand it way more now. thanks heaps!

[snipersquad]

Looks interesting. I'm glad for people like you who open-source their projects because I like electronics but not good at programing.

[hrithikhu]

Eagerly waiting for the better version of this project 🔥

[SupernovaSpence]

I might end up using your system for one of my projects :)

[kunalpagar]

Nice explanation.. since it is a three step lead acid battery charger with buck converter.. you can modify your code for mppt as well.. with only few lines. You can use mppt code during bulk charge only and rest time CC and CV charger.. in mppt code, you can calculate power and change the pwm duty cycle for max power only.. once you achieve voltage threshold, change the mode from mppt to CC and then CV..👍

[jackwilliams]

Your recent videos have been inspiring me a lot. Thank you for all the high quality content!

[Nando_]

so I'm not really capable to fully understand electronics and just bought Arduinos and sensors to start playing
but I would like to someday have a 12v battery/solar powered system running my optical fiber/wifi internet router, some charging USB outlets and my LED house lights, so if the power gone down I could still have the basics running (already have grid tie photovoltaic system and planning on installing solar water heating system)
since it all runs on DC I wouldn't need to convert it to 110v AC for the power bricks and internal LED lamp inverters convert it DC again, avoiding losing power by heat during the process
of course it have to accept grid charging when the sun spend some days not that bright... it's not really common here in Brazil, but it is possible to happen
I could do it all right now using existent products, but maybe I can make it on a better and smarter way (IoT)
you're project are just perfect to help me understand the needs... I'll keep watching
thank you mate 🇧🇷

[PhG]

A really nice project and an entertaining, educational video. Looking forward to see the final product. Hurry up !!

[josemanuelalogoadjomo]

I am always happy to be notified when you upload a new video, great WORK from EQUATORIAL GUINEA!!!! your advanced arduino series has changed my codding level
thanks

[PrUveTGoogl]

Однозначно спасибо за ваши видео уроки по програмированию микроконтроллеров 👍

[stephenpearce]

8:06. I suggest you relocate the LED1 across the relay coil which confirm the Q3 driver NPN is actually working. At present the LED1 is only indicating that a voltage has been applied to the Q3 Base and there is an assumption that the driver transistor Q3 is working correctly.
Overall a great little project. Like it and look forward to V2

[joshitoshi]

mppt charge controllers available in market are very costly, so if you could manage to make a working 30 amp or 50amp mppt charge controller with all features will definitely helpful to many diy fans. keep it up and hope to see a final working project.

[llleoha]

I might be missing something but this has nothing to do with MPPT. It is just lead-acid battery charger.

[alexscarbro]

An excellent video, very clearly presented. It’d be worth going over in more detail WHY MPPT is important.

[karljay]

I keep hearing how expensive these controllers are, yet it really doesn't look that complex. It's more complex than a standard battery charger, but it looks like someone should be able to make one themselves and save some money. I look forward to seeing the next version.