Research & Development
We build the instruments the cloud left behind.
Trebuoj is a small R&D studio building hardware and running the infrastructure behind it ourselves — no subscription fees, no big-tech cloud platform, just a device that works the moment you plug it in.
ultrasonic level sensing · ±few mm
How it works
Power it on
Plug in the sensor — it hosts its own WiFi setup page, no app or account needed yet.
Scan the code
Join your WiFi, then scan or type the code on the label to claim the device as yours.
Watch it live
See readings in the dashboard and get alerts the moment something needs attention.
AquaSense — water tank monitoring, without the subscription
💧 AquaSense
Solar-powered water level monitor for tanks, boreholes, and off-grid sites — reporting straight to your own private dashboard, hosted by us.
- Ultrasonic sensing — accurate to a few millimetres, clear of the sensor's blind zone automatically.
- Solar + battery — deep-sleep firmware built for months of runtime off a small panel.
- WiFi with cellular fallback — keeps reporting from sites with no home network.
- No subscription — we run the servers ourselves, so there's no monthly fee standing between you and your readings.
- Push alerts — low water, a possible leak, low battery, or a sensor gone quiet.
- Installable app — works like a native app on the phone, no app store required.
Why no subscription
No monthly fee
Most connected sensors charge you a subscription just to see your own readings. We run the infrastructure ourselves and don't charge for it — buy the hardware once, keep using it for as long as it lasts.
Design for the edge
Off-grid sites don't have reliable WiFi or mains power. Our firmware falls back across connectivity options and is built around solar budgets from the first line of code, not bolted on afterward.
Ship it plain
No app-store gatekeeping. Install it like any web page and keep using it for as long as the hardware lasts.