Full Version: HAT2 case & connection questions
You're currently viewing a stripped down version of our content. View the full version with proper formatting.
Hi there!

This is my first post here. Thank you everyone for making this site, where one can learn a lot. And special thanks to Sailoog for making this happen. First, I am not new to linux and OpenCPN, but I am quite novice with raspberry-pi/raspbian and Open Plotter. Good thing is that I ordered my Moitessier HAT2, plug into my RPi4, connected my boat antenna (AIS) and everything works like a charm! But for today I have two questions:

When I get my HAT2 from Sailoog store, I didn't order the case at that time. Now things are a little weird for ordering overseas (I am based in North America right now). Does anyone know an alternative case (for RPi4+Moitessier HAT2) which would work with these settings? If it's in Amazon USA that would be great.

And another question, this one more technical. So I am preparing the electric panel in my small sailboat to welcome the RPi4. I have the 12v to 5v step-down converter, same as in
But here comes the noob question; how do I plug the 5v output to my raspberry-pi4, which comes with the usb-c plug type?? I couldn't find a cable with such characteristics in the internet. Any help would be appreciated. Thanks

Fair winds
Following as I am new also and these are great questions. I recently received my HAT2, no case, and have my boat in my backyard waiting to install. Thanks.
See this post on how to connect power
Thank you @SFH for pointing me to the GPIO option to power up my RPi. But I have those covered with my Moitessier HAT2 as in the pictures in

To be precise, I have the Moitessier HAT2 Part/Order number PE770010E05-UART, which comes with the HAT header J701, that (to my understanding) can only be used to draw up to 3.3V. See page 6 in

So again, if anyone can point me to other ways to power my combo (RPi4+Moitessier HAT2) that would be great, cos I am a little lost now. Actually I was following the diagram in Figure6 from
which still from the 12 to 5v goes into the RPi main power ...may I summon Mr. @mgrouch in here?

(2020-04-14, 06:35 AM)Sailabout Wrote: [ -> ]Could this help?

Thank you Sailabout! I guess that's the way to solve my problem. Unfortunately, it gets a little more complicated (to me) since the raspberry-pi4 comes with a USB-C for power supply, and that's a whole new world of connections (again, to me). I was just wondering is there was a simplify hack (amazon or alliexpress cable) to circumvent the RPi power supply in the boat: 12v -> Step-Down converter -> 5v -> USB-C connector -> RPi4.

I'll give a try in  the RPi forums. Thanks.