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Hello to each other, I'm new here and wanted to test how it works with the transfer of data. To do this, I registered with ThingSpeak. I entered the API code in a Python script (see screenshot). Unfortunately, I always get the message: Response 400. When I enter the web address directly in the browser, I get a "0" back. I can't see an error entering the API key. Can you help me? I use a Raspberry 4B with the PIR sensor HC-SR501. The program will later run on a Raspberry Zero. Have a nice weekend everyone.