Nexternel

Your home, on your own server.

Nexternel brings your sensors, switches, cameras and energy readings together on dashboards you arrange yourself. It runs on a small Linux machine at home. There's no cloud account, and your data stays with you.

curl -fsSL https://www.reynsys.com/install.sh | bash

Run it on a 64-bit Ubuntu, Debian or Raspberry Pi OS machine, then open the address it shows.

A Nexternel dashboard with clock, calendar, weather, temperature and humidity gauges, power use and a light switch

What it does

Dashboards your way

Readings, switches, charts, gauges, cameras, weather, clock and calendar. The layout flows to fit a laptop, a phone or a wall tablet.

Your devices

ESP32 boards with ESPHome, built and flashed from the browser. Shelly switches, Octopus Energy and live cameras.

History kept

Every reading is stored, so charts show the last hour, day or week at a glance.

Moves house with you

An encrypted backup every day. Restore it on a new server and every device, dashboard and account comes back, and the devices reconnect by themselves.

Made to be looked at

  • Light or dark, with your own accent colour.
  • Soft-glow and gradient backgrounds, and calm effects like snow, fireflies or aurora.
  • Names and icons you choose for every panel and every reading.
  • Phones and tablets get the same dashboards, rearranged to fit.
Nexternel on a phone: clock, calendar and weather panels

Getting started

  1. Run the install command

    It installs Docker if needed, sets up every service with its own random password, and starts Nexternel. This takes a few minutes the first time.

  2. Open the address it shows

    Choose Start fresh and create your account, or Restore from backup to bring over a home you already have.

  3. Reserve the address in your router

    Your devices find Nexternel by its address, so keep it fixed. The install guide shows how.