Looks good, but where's the antenna?
Doesn't look like there's much room for it on the top facing the sky

Flex2 said..
Nice work Al, looks the business! For sure I would add a leash but that's me, mr crashalot.

No way it's coming off Jim unless the elastic breaks..famous last words :)

Excellent work! I like it.

Alhop said..

Flex2 said..
Nice work Al, looks the business! For sure I would add a leash but that's me, mr crashalot.

No way it's coming off Jim unless the elastic breaks..famous last words :)

ha ha, my elastic broke last session doing nothing but gentle cruise after a year or so due to too much sun and salt, 5 cent leash saved the day. Each for their own.

I always use the USB connection to charge (as I'm too blind to solder directly to board). Original unit from whenever this thread started still working fine. I use the ready made chargers that have the ferrite already included as per the picture, downside is you have to extend the cables unless you use my shoulder mount or some other non boom mount design.

If you want to share your design can add it to the list of known designs below. Currently only Freezer and I designs listed. If there are any others out there I've missed let me know. I know Boz has a mast mounted design that doesn't require 3D printing which gets the screen where you are looking whilst sailing instead of having to glance at the boom.

www.printables.com/@Flex/collections/474942

Alhop said..

elmo said..
Have you links for the parts?

AU $1.58 50? Off | 1PCS GPS-01 Normally Open Cylindrical Magnetic Control Proximity Switch Embedded Reed Switch Waterproof
a.aliexpress.com/_mKqPg68

Still have to solder the charging unit to this. Cant find a complete one yet with a long enough cable.

AU $2.56 10? Off | YUXI Micro 2Pin Wireless Charging Injection Nolding Plus Welding Wire FPC Flexible Cable Crimping Installation
a.aliexpress.com/_mPSUJRa

that cool, both will make build a lot easier! Thanks for sharing!

Please ignore below, I fixed it.
Firefox, NoScript to blame.
And it's admin, admin

So what's the firmware update details.
I've tried every combination of Admin, Admin and admin, admin. And Esp32 etc.
But can't log in.

BigBoss said..
And the battery and wireless reciever?

The wifi is integral to the sp32, this is an amazing little board. It does just about everything.
There's plenty of room, for battery and wireless charger

BigBoss said..

decrepit said..

BigBoss said..
And the battery and wireless reciever?

The wifi is integral to the sp32, this is an amazing little board. It does just about everything.
There's plenty of room, for battery and wireless charger

I know ;-)

I am curious about the battery and wireless charging receiver. The housing is not that thick. If I guess the battery is a 405060 or 404865 1800mAH battery. Or the housing looks smaller then it is in real.

It is clear from the pictures posted by Flex earlier: www.seabreeze.com.au/Photos/View/18895470/Windsurfing/Exploded-view/?m=3&p=Flex2
Also at Printables where you can download the 3D files: www.printables.com/model/385444-jan-heynens-diy-gps-case-with-screen-centre#preview
It is nicely balanced with GNSS-receiver on sailside of boom, epaper on top and lipo on the other side.

How many satellites does the chip use at 20 Hz? The original u-blox M9 seemed to be limited to 16 by the firmware.

Great data info! Thanks Jan.

If you get a chance to compare the M8 and M9, both at 10Hz, it would be interesting to see if the error value differences change.

Thanks Jan, from that analyses I definitely agree, the M10 is the way to go. That's what I'll be using next.

A new SW 5.76 with next changes is available on Github :
Changes SW5.76
Sleeptime 3000s -> 21600s
nav_sat timeout 2000 ms -> 4000 ms
add 1h to speed screen, setting 9
bugfix wifiAP screen : name SoftAP
shutdown screen : Saving your session or Go back to sleep
Autodetect GPS only once, then saved in EEPROM, can be changed over the webserver (configuration), only set AUTODETECT again !
Added support for the ublox M9 (Beitian BK180/220 /280), logging@20Hz + 4 gnss simultan
@Bigboss :
My favourite is still the M10 (Beitian BE180 / BE220 / BE280), lowest current consumption, and 10 Hz is more then needed for our purposes. Standard, I always use the 5 Hz setting.
The size of the antenna has no big influence on the error, or the nr of sats (my experience).
Greetings, Jan.

rp6conrad said..
bugfix wifiAP screen : name SoftAP

Please don't rename the network. On the computer I use, it's a matter of luck if the network name shows in the list of wifi networks. For some ESPs, I see the network everytime right away, but for others, it never shows, and I need to type in network name and password. This is likely to happen to others, too, and can be quite confusing.

boardsurfr said..

rp6conrad said..
Sleeptime 3000s -> 21600s

I assume that's to extend battery life while not in use? I just had one unit go down to 1% in ~2-3 months. Have you measured the deep sleep current? I have a few development boards where the actual sleep current is much higher than what the descriptions claim. Just adding an SD card can increase it 5-10-fold, unless the board has a second power line that can be switched off.

Correct, just to save power. The only function is to update the battery %, so 4 times a day is more then enough. The BN / B74 should have a deep sleep current from less then 1 mA. I measured this once, and then is was 0.5 mA. With a full battery (2000 mAh), is should last for 2000 hours (80 days). Never tested or the type of SD card has a effect on the sleep current.

The name / password of the softAP did not change, it is still ESP32AP.
Greetings, Jan.

boardsurfr said..

rp6conrad said..
Sleeptime 3000s -> 21600s

I assume that's to extend battery life while not in use? I just had one unit go down to 1% in ~2-3 months. Have you measured the deep sleep current? I have a few development boards where the actual sleep current is much higher than what the descriptions claim. Just adding an SD card can increase it 5-10-fold, unless the board has a second power line that can be switched off.

this is interesting... my first 3 units I built last a week max before flat, it's only my most recent device that seems to not go flat so quickly and I thought there was an issue with that one...

they have all been the same components and build process so I am really confused what I've potentially done wrong.