Lutra - modular data logging hardware aimed at marine applications

Hi,

I’m Michiel from Sett Labs, a bootstrapped one-man company I recently started after working as an engineer responsible for scientific equipment on a research vessel.

During that time I made a similar platform for my employer, but decided to improve on it unrestricted because I thought the current commercial options were lacking in terms of ways to diagnose a system and not really low power.

Below is a photo of prototype rev 1, after some rework …

The result focuses on three main things:

  • Verification & diagnostics: lots of monitoring (per-port voltage/current/energy, eFuse status, buffer module health, etc.) so you can actually tell whether a problem is on the sensor side or the logger side.
  • Power delivery (12/24V, 2A each) as a core feature with proper telemetry and protection (fixed and programmable overcurrent down to 100mA, OVLO, UVLO, reverse polarity, surge, ESD).
  • Low power consumption, measured on two-port prototype: waiting for data at 10mW, buffering data at up to 52mW. Bulk processing at 450mW with the Linux core.

I’m now getting close to a beta-test/pilot phase, so I’m looking for people interested in lending a pre-release unit (limited to three units for now).

Pilot details (limited to three units)

  • Size: 90×50×30mm pcb stack
  • Two RS232 ports, either 12V or 24V version, custom per-port current limit.
  • Using a Radxa Rock S0 for this round.

If you have space in an ROV/AUV payload, mooring, buoy, or similar system and are willing to run it in parallel with your existing setup and share feedback, I’d really appreciate it. The lending is because I’d like it back to check how the board held up, alternatively a couple of hi rez photos and some back and forth is fine too.

More info (still WIP) https://docs.settlabs.eu/

The end product has up to 12 ports and will be sold, but the interfaces will be open so people can make their own modules and the high level software (Meles) is already on Codeberg.

Happy to answer any questions!

Regards,

Michiel

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