Likely - I go through a bunch of SD cards @ my work for photography generally either camera won't detect the card or when ofloading image files will be corrupt files (weird looking / blank / static images)

Just be careful, you don't cut into the battery, that could lead to fire!

Thought I might be able to point you in the direction of the card, but whoever made that has done something different. My card sticks up at top right of the display, there's no room for that to happen on yours.

TerryF said..

It would be great if it can be easily replaced but if not I hope some of the other components are salvageable

I managed to salvage the antenna, the RF charger and the board. The battery had failed, so didn't try that.
It's a matter of going very slowly with patience.

I built an arm unit with the bits, and carry it in a good waterproof armband.
Although the unit it self isn't water proof, there's a few advantages.---
No messing about with magnets,
usb charging, much faster and doesn't overheat the device.
Everything is replaceable.
battery doesn't drain when not in use, so maybe top up charge in 6 months not fortnightly.

Main disadvantage, it's not as easy to see as a boom mount when sending it.

Hallo,

I need some help, during desolder the flash to exchange it with an 16mB I defekt the ESP.

Does someone know were to jump wire the broken pin?

If you flash the ArduinoOTA Webupdater.ino, you have to copy the correct "partitions.csv" in the ArduinoOTA Webupdater folder. Then compile the sketch and flash it again. A 16 MB partitions.csv with spiffs can be found here : github.com/RP6conrad/T_display/blob/main/partitions.csv
This partition gives about 13 MB diskspace

The inductive charger with Lipo output 4.2V comes with a small ferrite tape. This is no good if your lipo is positioned near the receiver coil ! A bigger ferrite shielding solves the issue !

Greetings, Jan.

Ready for the new 2026 season.
The 2 lime greens are the latest and final versions.No wireless charging.Pogo pins on the side to charge the battery.

Nice detailed video Jan.

For those with charging coils, I'm about to try inserting a thermostate into the charging coil, in the base plate. My bases get very hot and if you are not aware can deform the plastic enclosure. Could be a solution so you can just place the gps on charge and forget about it.
Anybody has experience with this parts:
es.aliexpress.com/item/1005005689214002.html?isdl=y&aff_fsk=_okkENJu&src=RedbrainESGeneral&aff_platform=aff_feeds&aff_short_key=_okkENJu&pdp_npi=4%40dis%21EUR%210.42%210.21%21%21%21%21%21%40%2112000034016899151%21afff%21%21%21&dp=CjwKCAjwwJzPBhBREiwAJfHRnZoJkjFLEJfM3ucbjwXVDxdE8C58SA1Jva8qTJDxyvXE257PfuGVHxoCaF8QAvD_BwE
thanks

I integrate the magnet for the reed switch in the 3D housing. Seems to work perfect. There could be a corrosion issue in the long run for the neodumium magnet (6*3), but this can easily be replaced. The magnet is exactly in front of the reed switch, but the orientation N-S is in the direction that the reed switch will not trigger. Only if you move the magnet 3 mm out of the center, the reed switch will trigger.
3D designs are public in onshape :
cad.onshape.com/documents/1a133db3bc3e572121f2d2b0/w/41124def46406a956a0f502a/e/4113362641da97c18bf510e6?renderMode=0&uiState=69ef32a73b0ac217822dcfa0

veton said..
As far as I know none of the chargers had any thermostat. I'm making my own and thinking on including one to be able to put the devices on charge careless.
cheers

It will depend on the brand, eg: the Texas Instruments BQ51050BRHLR has a "TS/CTRL" pin which you connect an NTC (negative temp coefficient) / thermistor.

Flex2 said..
Hi Jan, awesome idea. I'm no expert in Onshape but appears everyone can 'look' at your design but can't download the STL to print or modify. I'm sure your intention was to share freely. Possibly some setting you need to change?Separately, what are the white rods you are using for the strap holders? Fiberglass? I've been using carbon rods. Which is best?

White rods are fiberglass, was laying around here (from an old kite). I think that both (fiber or carbon) are stronger then the 3D PETG housing, so both types can be used.
The link to the 3D files on onshape do need that you have a (free) onshape account. I made some stl files and set these on github :
github.com/RP6conrad/ESP-GPS-Logger/tree/master/3D_housing
The breakout board for the SD nand is also on github :
github.com/RP6conrad/ESP-GPS-Logger/tree/master/SD_nand_128MB_breakout_EasyEda
But if you plan to make changes, certainly try out the onshape account : the 3D housing is with lots of parameters to change it to your own ideas.
I was today on the water with 4 ESP-GPS new design, worked perfect !
Greetings, Jan.

Try other chargers, your only chance is that the charge current is high enough so that the ESP can boot. The position on the charger is also important, the coil in the ESP should be aligned with the send coil. Try different positions. If you put it on the charger, it will try to boot, this is normal. When the it completes the boot, I will shut down again with the message voltage is low 2.8V. Just let it sit on the charger then for a couple of hours. When it is stuck in the bootloop, try another charger, and other positions.
Greetings, Jan.