DIY Battery Monitor using SensESP/ESP32 for Openplotter, SignalK & NMEA2000 - Tech E12 - Après Sail

[@-suncheez-]

Thanks, man. Your projects are awesome. Pity you have so little subscribers with such useful things.

[@ApresSail]

Thanks! feel free to round up some more subscribers for me!

[@FredCyrdotcom]

Hi Jason, Thanks for sharing a lot of valuable video. I appreciate your work! By any chance, would you share the power point presentation you are using in the video?

[@ApresSail]

I just added a link to the description and here it is: docs.google.com/presentation/d/1gUk_Dv9XsKVsI_aG6KP8dv5CLRo1A5vv/edit?usp=sharing&ouid=108443467110705163627&rtpof=true&sd=true

[@pmgear]

awesome project, thanks for taking the time to share it.

[@ApresSail]

No Problem, anytime

[@LesCollier]

Nice video, you have saved me a lot of hard work, thank you

[@ApresSail]

No problem, thanks for watching

[@paulpvhl1930]

Just found your channel and appreciate it greatly, both content and production. About to start my project and a new channel for my sailboat; looks like a huge part of the work is already done for me -- except I'll be using 24v LFP, a 21 HP Westerbeke diesel and a pair of DIY electrified and air-powered old 6 HP outboard conversions with variable pitch props. Eventual goal is a boat pet that comes when I call and knows how to get to the next location when I ask it to and anchor effectively built of mostly recycled and repurposed parts. Looking forward to going through your github content. Many thanks. (Also appreciate your channel's name as a deeply philosophically meaningful outlook on life quite similar to my own. Cheers.

[@ApresSail]

Sounds like an awesome project!! let me know if you see anything on my Github you are unsure of. I have a another project coming up when I get chance with some automated switches.

[@paulpvhl1930]

@@ApresSail Thanks for this. I'm feeling much less procrastination now that I've found so much help!

[@arkadybron1994]

Slightly disappointed that you didn't use a hall effect current sensor instead of the shunt, but nevertheless, a much better than the average YT marine-electronics video.

[@ApresSail]

The Hall effect versions are more expensive than the Shunt version, and the 50mv loss is not a big deal really. For other viewers can you think of other pro's and cons of Hall vs shunt?

[@mrginoromano]

Thanks!Awesome project,I don't have NMEA2000 but Seatalk (first version), which canbus can I use? thanks for help and taking the time to share your projects.......

[@ApresSail]

No problem! if you have Seatalk 1, then you can connect it to your Raspberry Pi via an Opticoupler and be able to decode it. Take a look at my Tech Episode 2.

[@hephey63]

Nice video thanks a lot. Could you please post a picture of the battery with the shunt from the frontsite?

[@ApresSail]

I can't do it in the comments but I just updated the Github page at: github.com/Techstyleuk/SensESP_3_Battery_Monitor with 2 pics, I hope that helps. the shunts were smaller than expected, I didn't really look, I assumed the connection was going to be a standard battery terminal and it isn't. I am either going to mount these or buy something else. Vishay do one with bigger holes or there was one at Aliexpress that was mounted

[@hephey63]

@@ApresSail That is perfect - thank you so much

[@Coyotehello]

Hi Jason, nice detailed video, as usual. Are you actually writing all the code yourself? If so, Kudos to you, that is a fair amount of work. Quick question: The buck converter you are using could that power a small 5V bus bar? I am trying to find a clean way to provide 5V for all my 5V components (RPi, likely a McArthur hat, small computer accessories). What is your solution on s/v Après? Cheers, a.

[@ApresSail]

the buck converter I use is 3A and I use one for the RPI, with several peripherals, but then attached I have a 12V powered USB hub with 4 ports for extra RPI connections and a 2.4A power USB that you could power the RPI with, if you wanted too (amzn.to/49baLGN). I have a second hub at the helm for Maiana and the touchscreen. I thought the MacArthur Hat took 12V supply and provided safe shutdown, similar to the circuit that I use. Couldn't you just use that?

[@Coyotehello]

@@ApresSail Excellent information thank you. Yes the MacArthur does what you mentioned above and 12V to 5V.

[@Coyotehello]

@@ApresSail Yes, but apart from the MacArthur hat providing 5V to the Pi5 , how can I use that 5V for other peripherals?

[@ApresSail]

@@Coyotehello like I said, I would either use a 12v USB Hub - then every peripheral is locally powered - the one I use is up to 24watts. I have GPS dongle, RTL-SDR, RS422-USB (NMEA0183), wireless KBRD/mouse dongle and 10" Navstation touchscreen on one, Maiana and the 15.6" Screen touchscreen on another. with regard to the code, I wrote it with help from many examples and the literature for SensESP from Matti Airas - github.com/hatlabs/

[@Coyotehello]

@@ApresSail Cool stuff.

[@pietromaurizio8990]

Hi, interesting project. Can you provide me with the list of components and the link to the code?

[@ApresSail]

Links to components and the code can be found in the description - thanks

[@somyrab]

Can you turn up the volume?

[@ApresSail]

Sorry about that, I trying to improve the sound as we go forward

[@llablancheHermineBZH]

bonjour est il possible de monitore 4 batteries avec votre système en rajoutant un module can bus car j'ais un parc batterie de 3 x 4 batteries a regarde sur home assistant vidéo simple efficace merci beaucoup 👍👍 france bretagne Kenavo Good morning is it possible to monitor 4 batteries with your system by adding a can bus module because I have a battery bank of 3 x 4 batteries looked on home assistant simple effective video thank you very much 👍👍 France Brittany Kenavo

[@ApresSail]

The INA219 voltage/current sensor board has 4 possible addresses which means 4 can be used on one I2C bus, so you could monitor up to 4 quite easily. Over 4 you could use a multiplexer (amzn.to/49cVGoY) or there is a INA3221 which will do 3 batteries each and 4 addresses (12 batteries total) - amzn.to/3MoASRv. You would have to make some code adjustments but just using 4x INA219 would be mostly copy and paste from my code

[@llablancheHermineBZH]

@@ApresSail Thank you for answering my question so quickly because I have 12 batteries to look at and see the balancing of such a park is important to have good solar autonomy you just gained a subscriber Kenavo