Research & Development
We build the instruments the cloud left behind.
Trebuoj is a small R&D studio making self-hosted hardware — sensors and software you own outright, with no subscription standing between you and your own data.
ultrasonic level sensing · ±few mm
AquaSense — water tank monitoring, without the subscription
💧 AquaSense
Solar-powered water level monitor for tanks, boreholes, and off-grid sites — reporting to a server you host yourself.
- 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.
- Self-hosted — the whole stack runs on hardware you control; your data never leaves it.
- 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 self-hosted
Own the hardware
Most connected sensors rent you access to your own readings. We build devices that report to a server you control, so nobody else can switch it off, change the price, or lose your history.
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, no recurring fee. Install it like any web page, keep it as long as the hardware lasts.