Senbrix is a PLC development environment for Raspberry Pi. Build operating sequences in ladder logic, and add C# for calculations, web APIs or database access when you need them. Both languages share variables, so machine control and data processing work in one program.
See the workflow
Create ladder logic for the sequence you need, edit it yourself and watch it run.
Generated ladder · Worked example
A seal-in circuit with a 3-second delay.
Review the ladder logic AI generates and make your own changes.
Build your operating sequence in ladder logic. When you need calculations, web APIs or database access, you can add C# functions with AI. Both languages share variables, so ladder conditions can use the data directly.
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For prototypes and delivered equipment
The development tools and runtime are free. Whether you are testing one prototype or delivering multiple machines, there is no software license fee per device.
Download the free editor →Hardware and external AI services are charged separately.Use a Raspberry Pi you already own
Run this command in a Raspberry Pi OS terminal.
The script installs the .NET runtime and registers the Senbrix service.
curl -sSL https://raw.githubusercontent.com/going-kr/Release.Senbrix/master/install-runtime.sh | sudo bash
Ladder and C# share one class, one symbol table and one IntelliSense. Build on Windows, deploy to a Raspberry Pi, and when there is no hardware yet, let the simulator stand in for it.
From Senbrix-win-Setup.exe to checking the .NET 9 SDK and the first start screen. Get the PC side done before Part 2 puts the runtime on a Raspberry Pi.
From flashing the OS to the runtime one-liner, then writing the Pi-SD16R pin map as XML and registering it in the editor. This is where a Raspberry Pi becomes a PLC.
One line in the Claude console, six symbols and four rungs come back, then Deploy and Monitor. Press the button and a relay clicks. Three seconds later the second one follows.
Give us the target and the I/O count, and we'll suggest a board configuration and a quote.