Read the statement by Michael Teeuw here.
Starting from an existing module?
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 I saw in this post a couple of people recommend starting with an existing module when attempting to create your own module. I have a JSON command that returns information I was to display on my Magic Mirror. The only two variables I want to specify in the config are the device IDs to pass to the JSON command and the amount of time (in minutes?) I would like to refresh this data. What would be a good module to start with for these requirements? 
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 @sifuhall what is the ‘json command’ written in? python? see my PythonPrint module 
 https://github.com/sdetweil/MMM-PythonPrintwhich launches a python script, captures it’s print/stdout content, and sends it to the front end to process it can launch python scripts that output repeatedly over time, or it can launch a one time script on some timed cycle 
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 Thanks for the reply. The JSON command works from a browser. This is the command 
 http://192.168.1.9/JSON?request=getstatus&ref=260,175,233260,175,233 would be the IDs I would like to pass 
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 @sifuhall you should be able to do that right in the browser side with built in fetch() 
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 @sdetweil Thank you 
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 @sifuhall my SampleModule has all the parts. u won’t need the helper if fetch works 

