Krill SDK for Kotlin Multiplatform
Develop Home Automation on any Platform with the Krill Kotlin Multiplatform SDK for Java and Kotlin.
Krill
Decentralized process control & automation, built for makers.
Run a krill server on a Raspberry Pi, a laptop, or a rack box. Open the app on any device on your network. Wire sensors, schedulers, calculations, GPIO and dashboards into a live swarm — no cloud, no accounts, no rented brain. The architecture pros use for SCADA, scaled down to fit on a workbench.
your network live · mDNS · LAN
krill server · home.local
phone
control
desktop
dashboard
esp32
sensors
relay-pi
actuators
tablet
journal
laptop
editor
server broadcasts · apps subscribe
zero config · no port forwarding
New to krill? Start with the walkthrough.
Four minutes. Three nodes. One mental model that scales from a single thermostat to a building's worth of sensors.
Apps for every platform
One swarm, every screen — install the control app, or stand up a server.
Linux — one-line install - https web portal on port 8442 Learn more
Server
$ curl -fsSL https://cms.krill.systems/distro/server/install_krill.sh | sudo bash Desktop
$ curl -fsSL https://cms.krill.systems/distro/desktop/install_krill_desktop.sh | sudo bashPinned Posts
Check out the Categories Menu for a wealth of examples, experiments, blogs and more info.Tracking Planted Aquarium Water Quality
Logging water-test colors over time with a Raspberry Pi color sensor for aquarium and water-quality monitoring.
DIY Liquid Color Sensor
Build a calibrated liquid color sensor, track changes over time and get alerts.
Recurring Tasks & Expiry Automation
Turn recurring task lists into maintenance reminders that trigger automations when a task becomes due, missed, or overdue.
Raspberry Pi Kiosk Tutorial — Boot Any Web Page Fullscreen
A no-frills guide to turning a Raspberry Pi into a fullscreen browser kiosk that loads a web page on boot. Works with any URL — local or remote.
Color Data Points Triggers
Store, visualize, and trigger on color sensor data with the new COLOR data type and Color trigger
CircuitPython Sensors via Lambda
Read I2C and GPIO sensors directly on the Raspberry Pi using CircuitPython in Krill Lambda scripts
DIY Planted Aquarium CO2 Reactor with Color Sensor Feedback
Build an automated planted aquarium CO2 injection system with Zigbee solenoid control, Raspberry Pi scheduling, and TCS34725 color sensor feedback using Krill's node-based IoT platform.
SMTP Email Alerts
Send email alerts from any Krill trigger with the SMTP executor — wire it to thresholds, cron timers, or logic gates to notify recipients via your own SMTP relay.
Project Dashboard: Live Data, Video, and Automation at a Glance
The Project Dashboard brings live sensor data, camera feeds, diagrams, graphs, and automation controls into a single organized view.