MAIANA Blue

[negrusti]

Would it be possible to buy the board or a kit from you?

[sebba]

Hello,
Yes, it is.
All my boards are populated now and I'm at the final stage with the base kit (base-kit PCB/mounting tube/antenna)
The complete base-kits should be ready within 1-2 weeks from now.

also, I just sent one base-kit board in Spain for final testing and I suggest waiting for these test's results first

[sebba]

Hello again,

I redesigned the NMEA0183 adapter, trying to fit it in a 52mm gauge form and type-C connector.
The switches can be also replaced with vertical type, same size, for mounting in regular shape box, like original design.
LEDs are regular 3mm LEDs, without light pipes, soldered on the PCB, bended pins (or straight).

This is what I got for now.
Ignore the colors

   
   
   

[Jon on Wildflowers]

Thank you for your efforts, looking forward to the results!

[sebba]

Thank you,
I started to redesign the gauge parts in OnShape
I added variables for resizing the gauge OD, ID, thread pitch and so on, important dimensions do not require sketch editing (only variables)
Project link here: https://cad.onshape.com/documents/96055e...b24bbfe50f (you need an account, free)
It is still under development... Still have some work to do for adding some PCB fixing-in-place solution and for the front frame etc. I don't intend to make it only for Maiana adapters, it should be somehow universal for DIY projects.
I printed the parts in ABS, 0.4mm nozzle, 0.2mm layer. I'll add some pictures soon.
Any suggestions are welcome.

[Jon on Wildflowers]

First antenna on test with NanoVNA



I recalculated the antenna for 161.5MHz, it is around 1cm longer than original
The original antenna seems to be tuned for 165MHz, wondering why....

And after some manual tunning (upper radiator shorted by 1mm):



It is time for outdoor and real life tests 

Just thinking out loud........am I correct in assuming that this antenna is a dipole design(style)? There are alternatives in the J-pole design....for example  https://edsantennas.weebly.com/ a side by side would be interesting......no?

[sebba]

thanks for your input
for now, I'll stick around the original design, as much as possible
as far as I know the antenna is a "flower pot antenna"
more details here:
https://vk2zoi.com/articles/half-wave-flower-pot/
https://nomonsuhendar.blogspot.com/2020/...lator.html

[sebba]

I need help! Thank you!

I'm somehow at the final steps with MAIANA production but I have some issues with the NMEA2000 adapter.
A copy of a functional firmware will help a lot. ECLIPSE IDE and STM programming are not my stronger points. So,,,

Does anyone have the latest version (v8.1) of the NMEA2000 adapter and can make a copy of the firmware? Preferably a board with STM32L432.
"Read All" and "Save" using STM32Cube Programmer after starting the adapter in DFU mode by holding the Boot button while powering on?

Thank you!