Raspberry Pi
Control Raspberry Pi GPIO pins for digital input/output and PWM operations.
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
decentralized
Local-first, by design
Servers discover each other on your LAN and pair into a swarm. Your data, your hardware, your network — never anyone else's cloud.
process control
Real automation, not toys
Data points, cron timers, calculations, GPIO, alerts, dashboards — composable nodes wired into directed graphs. Inspired by industrial SCADA.
maker-first
Runs on a Pi
Aquaponics, vivariums, breweries, greenhouses, workshops. Drop a server on a Pi, plug in sensors, build the system you actually wanted.
pro-grade
Architecture pros use
Typed nodes, explicit observer model, deterministic graph evaluation. The same patterns that run factories — without the seat-license bill.
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.
Pinned Posts
Check out the Categories Menu for a wealth of examples, experiments, blogs and more info.Outgoing WebHooks
Send HTTP requests to external systems for integration and notifications.
MQTT
Control devices and IoT applications using MQTT protocol with publish/subscribe messaging.
Low Thresholds
Trigger workflows when data point values fall below a specified threshold.
Logic Gates
Boolean logic operations (AND, OR, NOT, XOR, etc.) for conditional automation workflows.
Lambda Python Executors
Execute custom Python scripts for advanced automation and data processing.
High Thresholds
Trigger workflows when data point values exceed a specified threshold.
Data Points
Store and log time-series sensor data with millisecond precision for IoT monitoring, graphing, and automation.
Data Filters
Filter and clean sensor data with Deadband, Debounce, Discard Above, and Discard Below filters.
Cron Timers
Trigger workflows on a schedule using cron expressions for time-based automation.