The grating spectrometer developed by us in combination with a simple C-mount camera, such as the "Rasperry Pi HQ" camera, allows the investigation of a wide variety of light sources and this despite simple and inexpensive assembly. Our spectrometer achieves a resolution of about 1 nm in the visible waveband from 400 nm - 800 nm.

Thanks to the high resolution and the wide spectral range, physical phenomena such as thin film interference, transmission properties of various substances, but also photoluminescence of dyes and even the absorption lines of hydrogen in the emission spectrum of our sun can be observed, studied and measured. With our open source software SpecControl you have an easy to use tool at your disposal, which has implemented different spectroscopy modes in addition to a calibration routine.

The spectrometer requires:

• 3D-printed components
• A transmission-grating (1000 lines/mm, as shown in the pictures. Available at hobby stores for a few euros).
• A razor blade for the entrance gap (plus superglue and cling film)
• Nine M4x10 screws
• A C-mount camera as the RaspiHQ camera with an IMX477R sensor or any low cost IMX322 camera with kit lens. In best case you have a monochromatic astronomy camera (guiding/planets).
• A C-mount lens 5-50 mm with a diameter of 30 mm for the camera. The collimating lens behind the slit is neglected here, but the spectrometer also works without it.
• To achieve even better results, you can use a second C-mount objective as a collimating lens. Simply print out the "collimating lens" component and stick it directly onto the area behind the slit.

For further information, an assembly instructions, and accessories, visit our spectroscopy section.

If you are looking for extension:
Cuvette addon for photoluminescence or transmission spectroscopy

PrintedLabs

Are you looking for exciting projects and creative experimentation in the STEM field? Then visit our website PrintedLabs.Uni-Bayreuth.de and take a look around. Whether you are a teacher, student or hobbyist and curious about physics and other STEM subjects - we offer a platform with a constantly growing selection of project ideas, DIY lab equipment from the 3D printer and matching software. Plus, of course, the necessary tutorials and assembly instructions.

To get started yourself, download our 3D models, software and instructions for free and experience for yourself how easy and inexpensive it is to realise your own experiments. With PrintedLabs, we not only want to awaken the joy of science and STEM subjects, but also promote analytical thinking, problem-solving skills and structured working methods. Our claim to ourselves is:

• To make science and STEM subjects fun through self-built "lab equipment" and its application.
• Developing analytical and creative thinking, problem-solving skills and learning structured working methods for setting up and carrying out scientific experiments.
• The teaching of basic knowledge of data processing and the evaluation and interpretation of measurement data.
• Good performance for detailed experimental results.
• Compatibility of all components and associated software.
• Simple and cost-effective assembly using standard tools and additional components.
• Robust 3D-models in printing, production and handling.
• High modularity to enable "free experimentation".