Bonsai Programming workshop, Heidelberg, Oct 17th

[Mateusz Kostecki]

Hello!

We are happy to announce our first workshop of the new academic year! This time we will teach you how to use the Bonsai reactive programming language.

Many experiments require us to synchronize multiple data streams— from cameras, sensors, microscopes—precisely deliver stimuli, and, quite often, do everything in a closed-loop setting. The fact that different devices use different software doesn’t make this task easier.

One of the best—and open—solutions to these challenges is Bonsai, a reactive programming language that allows you to collect data from multiple systems, from calcium imaging through sound recordings to sensors, and to control output devices—such as feeders, motors, or stimulus delivery systems—to build closed-loop paradigms. It is easy to learn, implement, and is robust.

During our workshop, we will introduce the basic logic of Bonsai; cover loading and saving data; working with a camera to track animals; and the basics of closed-loop experiments. We will also cover using Arduino alongside Bonsai to control experimental equipment and to save data from your sensors.

Requirements: A Windows computer and a webcam.

The workshop will take place on Oct 17, 9:45 AM–5:00 PM at COS, Heidelberg Institute. Please find more info and the registration form here:
https://openlabhd.org/2025/09/30/bonsai-programming-workshop-oct-17th/

With best wishes,
Mateusz Kostecki