Comments: Getting Started with the A111 Pulsed Radar Sensor


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  • Member #65468 / about 5 years ago / 2

    Great project for a decent price! Question: what is the measuring envelope for this board as far as velocity? What about the minimum size of objects measured within 10-30cm from the sensor? Is the velocity envelope measurements software-based or requires hardware modifications (low-high bandpass filter) if the velocity is (for example) between 200-900 mphs?

    • Member #1552116 / about 5 years ago / 2

      Hi, if you update to the latest sw and exploration tool you can use the sparse service and measure speeds of up to around 300 mph. The size a detectable object depends on the shape and its physical property. Please have a look at Radar sensor introduction doc at:

      • Member #1812967 / about a year ago / 1

        I'm curious if this radar can detect up to 950m/s?

  • Member #1812967 / about a year ago / 1

    Can I use Pi Zero instead of Pi 4? I'm getting Acconeer software version a111-v2.14.1 Illegal instruction

  • Member #1660930 / about 3 years ago / 1

    Hello. I have error when connecting the A111 sensor with raspberry pi 4. My raspberry pi 4 is 64bit and the error I got is cannot open shared object file: no such file or directory. I already install sudo apt get install libgpiod2. How can I solve this problem? Thank you

  • I setup my Pi exactly as the tutorial says but when I want to run the basic distance example code or anything else, the Pi tells me this: [ 2334] (E) (sensor_manager): calibrate_sensor: Integration: Sensor 1 does not communicate properly, is it connected?

    I have my Radar breakout board connected the whole time. SPI is working fine as well. What kind of bug is this?

    • The tutorial is updated! =)

    • Hi,

      This sounds more like a technical question. I believe that instructions listed in this tutorial are outdated. I am in the process of testing and rewriting the tutorial to reflect the SDK version changes since users are not able to access v1.8.6 from Acconeer. Try re-downloading Acconeer's SDK listed under the tab called "SparkFun". Instead of dragging the contents of the rule and source into the SDK, just build the files using the make command and run the examples in the command line. This seemed to fix whatever error we saw:

      [ 2334] (E) (sensor_manager): calibrate_sensor: Integration: Sensor 1 does not communicate properly, is it connected?

      If you are looking for additional solutions with this specific error, I recommend checking the FAQ or submitting a support ticket with Acconeer since they handle the software SDK packages.

      • Good morning! It works, not with the update of the tutorial but by connecting the Raspberry Pi pins to the hole next to the header of the breakout board. Somehow the header does not connect well with the whole breakout board. However, thanks for the support anyways! :)

      • Hello, Thank you very much for the update of the tutorial. After several measurements and tests, I can confidently affirm that the breakout board has no hardware related issues. The problems are coming from the SDK or other software related issues.

        I tried out your tip and it also did not work and I got the same issue as last time. The reply to my submitted support ticket was referring to the forums and does not seem to want to help.

        I'll keep you updated on my progress!

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