Posts in 2025
  • Become a sensor sponsor and receive a free CitRad sensor

    Sunday, February 02, 2025 in Blog

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    On February 15, 2025 at 2 pm the next building workshop for CitRad sensors will take place. We want to build more sensors together with you to collect even more data from locations in and around Cottbus. Those who take part in this construction …

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  • Successful first construction workshop

    Saturday, January 18, 2025 in Blog

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    Photo: Benedikt Stahl / CC-BY-CA

    At relatively short notice, four members of Fablab Cottbus agreed to help us test the building instructions and produce new CitRad sensors for traffic counting in Cottbus. All participants had different levels of experience, which promised us …

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  • First building workshop at Fablab Cottbus

    Sunday, January 12, 2025 in Blog

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    Photo: Benedikt Stahl / CC-BY-CA

    After four months of development, the CitRad sensor is now ready to count vehicles and measure their speed. At the same time, we have largely finalized the building instructions for the sensor and also pushed ahead with the development of the data …

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Posts in 2024
  • Smart radar unit

    Wednesday, October 16, 2024 in Blog

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    After we have developed an algorithm on the computer to analyze the radar data, the whole thing now has to be implemented on the device. Our goal is that all the data is already analyzed in the box and we only need to store the number of cars and …

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  • Data analysis

    Tuesday, October 15, 2024 in Blog

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    Screenshot: Nanu Frechen / CC-BY-CA

    After all our experiments with amplifier circuits and a low-noise power supply, our sensor now seems to be working well. At least you can clearly see different vehicles in the spectral images of the radar data and recognize how fast they are driving. …

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  • Data protection compliant traffic counting

    Tuesday, October 01, 2024 in Blog

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    Foto: Benedikt Stahl / CC-BY-CA

    When we realized that we wanted to collect open traffic data and make it available for analysis, we quickly came to the question of how. Existing projects for the automated analysis of camera images were tempting, as they would have saved us a lot of …

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Posts in 2023
  • First measurements and a lot of interest in our project

    Saturday, July 01, 2023 in Retrospektive: Hardware

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    Photo: Nanu Frechen / CC-BY-CA

    With an initial prototype that provides data, we were finally able to invite interested parties to take measurements. At the same time, we took the opportunity to present the project at thematically appropriate events such as the Car-Free University …

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  • The first prototype

    Thursday, June 01, 2023 in Retrospektive: Hardware

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    Photo: Nanu Frechen / CC-BY-CA

    The CitRad sensor had to be based on a radar sensor that was as inexpensive as possible but still reliable and easy to replicate. After a few tests, we chose the IPS-354 module from Innosent. We also needed a powerful microprocessor to process the …

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  • How CitRad was conceived

    Wednesday, March 01, 2023 in Retrospektive: Hardware

    Where do you start to make a meaningful contribution to the traffic turnaround? We pondered this for a few days at FabLab Cottbus. We quickly realized that we wanted to implement a joint project. With the participation of interested citizens from …

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