How can I show data from my personal API to a gauge dashboard without a DB?

Hi, I’m new here and I’m trying to learn as good as how to use Grafana for University IoT project. I’m written an API that returns data from a gyroscope. I want to use grafana to show live data into a dashboard but without using a database: I’m using JSON to send data from server to client but I don’t know how can show it. Can someone help me?
Thanks in advance.

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