Another DIY GPS logger approach

now light mounted in a case... so happy with how easy it is to turn off now... no more guess work!

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Rolz said..
now light mounted in a case... so happy with how easy it is to turn off now... no more guess work!

I see you're using the button battery flat.
Jan says it works better on it's side.
Can you confirm that with the LED?

The button battery has two flat sides and one round edge, N and S are on the edge apparently, so the flat sides have weaker magnetism. The advice is to use the magnet edge on instead of the flat side.

This is counter intuitive, the natural action is to place a flat side against the device. It would be good if you can see if it actually makes any difference to how far away you can get the LED to light up.

Now SW 5.74 is now on github with next changes :
SW5.74
Debouncing reed switch with 200ms @boot ( to prevent turning on with heavy shocks)
Shutdown screen 10s -> 5s
Bat voltage calibration limits min value 1.7 -> 1.6
Bugfix GPIO12 screens
Changed default settings when no config.txt
Add watchtdog to task0 + task1 separat, Time out = 60 s (to recover out of a locked screen)
Changed order Wifi screen, so IP is not in the middle anymore
Check bat voltage@boot, if too low back to sleep. This to prevent a bootloop
Separate Change_log.md file

github.com/RP6conrad/ESP-GPS-Logger/blob/master/README.md

Greetings, Jan

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rp6conrad said..
Now SW 5.74 is now on github with next changes :
SW5.74
Debouncing reed switch with 200ms @boot ( to prevent turning on with heavy shocks)
Shutdown screen 10s -> 5s
Bat voltage calibration limits min value 1.7 -> 1.6
Bugfix GPIO12 screens
Changed default settings when no config.txt
Add watchtdog to task0 + task1 separat, Time out = 60 s (to recover out of a locked screen)
Changed order Wifi screen, so IP is not in the middle anymore
Check bat voltage@boot, if too low back to sleep. This to prevent a bootloop
Separate Change_log.md file

github.com/RP6conrad/ESP-GPS-Logger/blob/master/README.md

Greetings, Jan

Thanks for the update! These seem to be some useful changes.
Unfortunately it doesn't seem to update. After flashing (Rtos5.74B73.bin) and restarting it still displays 'SW-ver 5.73'.
Anyone else having the same issue?

Yes, strange indeed, since the progress bar completes to 100% en then it restarts. I've tested it multiple times (also with a freshly downloaded bin file).
I also tried downgrading to an older version, but 5.73 is very persistent :D

Maybe my board is damaged somehow, since I had to remove the charging chip. I blew up the charging circuit due to reversing the polarity I then attached a separate charging circuit but I noticed power drain when in sleep; over night it lost 30%. So after removing the damaged chip all seems to work ok. Untill now :)

Did it worked before ? The short is most likely in the button gpio39 (waterintrusion ?). You can remove this button. There is no slide button on/off ? Do you have a multimeter ? You find more information here : github.com/RP6conrad/ESP-GPS-Logger#readme
There is a link to the build manual with the color coding.
Greetings, Jan.

First pooring experiment, with the compact case and a broken display (no gps or battery). Just to try. I made just enough for this flirst (half empty) case (50gr). It poors nicely from the display down until full.

Unfortunately, although it holds water, it does not hold the pooring epoxy. Why is that? Seems that I have to use 2k lack on the inside first... it runs empty, slowly but surely. Visible own the picture below:
Any tips are more than welcome.

Isn't there some sort of coating that helps the resin spread and adhere. We used to coat insects with it before surrounding them with resin.

^Like

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Freezer said..
First pooring experiment, with the compact case and a broken display (no gps or battery). Just to try. I made just enough for this flirst (half empty) case (50gr). It poors nicely from the display down until full.

Unfortunately, although it holds water, it does not hold the pooring epoxy. Why is that? Seems that I have to use 2k lack on the inside first... it runs empty, slowly but surely. Visible own the picture below:
Any tips are more than welcome.

3D prints are not water proof, hence the need to fill the case with potting epoxy, hoever, as you have found the boxes are also porous to the potting epoxy. It also looks like you have not covered the screen with a clear faceplate, and it looks like there is some capillarity and siphoning happening around the edges also. You need to seal the outside of the box before filling with epoxy. What most 3D printing people have found works best for water proofing is Rustoleum - a 2 part epoxy spray. It gives a nice finish to the 3D print too. I used botecote on my first pair, but to get a good finish you have to do each side seaparately. The Rustoleum is more forgiving, but does tend to run with gravity. Use a number of thin layers so you don't get drips.
I see you have designed your own boxes. If you are using Flex' boom mount box do not seal the inside of the box as it is designed with very little empty space and you may have trouble fitting the components in if some space is taken up by a coat of sealant.

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Freezer said..

Windxtasy said..

Freezer said..
First pooring experiment, with the compact case and a broken display (no gps or battery). Just to try. I made just enough for this flirst (half empty) case (50gr). It poors nicely from the display down until full.

Unfortunately, although it holds water, it does not hold the pooring epoxy. Why is that? Seems that I have to use 2k lack on the inside first... it runs empty, slowly but surely. Visible own the picture below:
Any tips are more than welcome.

3D prints are not water proof, hence the need to fill the case with potting epoxy, hoever, as you have found the boxes are also porous to the potting epoxy. It also looks like you have not covered the screen with a clear faceplate, and it looks like there is some capillarity and siphoning happening around the edges also. You need to seal the outside of the box before filling with epoxy. What most 3D printing people have found works best for water proofing is Rustoleum - a 2 part epoxy spray. It gives a nice finish to the 3D print too. I used botecote on my first pair, but to get a good finish you have to do each side seaparately. The Rustoleum is more forgiving, but does tend to run with gravity. Use a number of thin layers so you don't get drips.
I see you have designed your own boxes. If you are using Flex' boom mount box do not seal the inside of the box as it is designed with very little empty space and you may have trouble fitting the components in if some space is taken up by a coat of sealant.

Yes, you're right. I thought I could get away with it, since my water-stay-in test was succesfull. And it saves some time-consuming steps in assembly. I think indeed the different surface tension of the epoxy and the capillarity caused it to leak while the water was just fine. I will use the 2k DD lack, that I still have laying around, to seal the larger housing that can re-open with screws. Probably does not need all that much. Only the small inlay to keep the PCB nicely centered and flat has a tight fit, the rest has enough clearance to fit.
I don't facy a (thick) faceplate and hope that a 1-2mm resin cover provides enough protection for the epaper. Or need to try some gorilla-glass. I have a nice frame that only shows the epaper part with the pixels. I have a few waiting for a succesfull pooring:

Your cases are very elegant. I am interested to see how they go on the water.
Where do you plan to wear them?
I am a bit concerned about how much protection the pouring epoxy will give to the E paper in a crash/ normal wear and tear as it is quite flexible

hey all... having an issue with downloading ubx files larger than 8MB it seems to reboot my device...
Also anyone else noticing wifi speed is really slow or is that just me?

Rolz, better of downloading GPY file,and analizing through GPS Speedreader, files way smaller. My filesnormally about ~1Mb take around 10 sec to download.

Rob, the unit will consume some power as it still updates the screen (I believe t does anyway), if sitting idle for a couple of weeks slam it on the charger before you go out.

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Rolz said..
hey all... having an issue with downloading ubx files larger than 8MB it seems to reboot my device...
Also anyone else noticing wifi speed is really slow or is that just me?

I did some tests today, and it seems that there is a reboot with large files (10 MB worked here, 18 MB forces a reboot after 2 min). I could be the watchdog (60s), I am not sure yet. With FTP (WinSCP), the download from the 18 MB file went well, although it took 4 minutes.
Can you give it a try with FTP ?