Display message on ThingSpeak
Lorenzo Scavarda
on 9 May 2022
Latest activity Edit by Christopher Stapels
on 8 Jun 2022
Good morning,
I'm working with an Arduino MKR 1010 which takes information about weather from the website "api.openweathermap.org". On a ThingSpeak dashboard I displayed the main numbers (float) information like: temperature, wind speed, humidity, etc. Moreover, from the openweathermap I can also get string sentence (e.g. "light rain" or "broken clouds" etc.). I'm wondering if there is a way to display on the ThingSpeak dashboard string fields. Indeed, in the ThingSpeak Channel Settings I added an extra Field in order to store these string words but I don't know how to print them in the dashboard.
Someone can help me?
Thanks in advance,
Lorenzo
5 Comments
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Hi Vinod,
yes, I'm using the Status Field indeed. However, it is not the best way because the layout and format of the text is very fixed, for example I can't use the "new line" but the text is in just one line. If I want to display a sort of weather report for the next hours of the day (i.e. not just one word but several sentences) is not very suitable.
Are you trying to display the text on your ThingSpeak channel? If so, you can use a MATLAB visualization, and use the text or annotate functions to put the text on a figure. Then add the visualization to your channel.
When I've done this, i occasionally have to experiment with scaling the figure and text, but with a little work, you can definitely get what you want.
Thanks Christopher for the answer. Yes, I though it but I have a doubt: what is the right function to retrieve the string (that I want to display) and put it in the annotate function? Because my problem is that the String is one of the Fields of my Channel. For example I found:
data = thingSpeakRead(readChannelID,'Fields',field_number,NumPoints=3)
but I don't how to handle a string variable. Is it enough use:
data = thingSpeakRead(readChannelID,'Fields',field_number)
Do you have some hints?
Thanks a lot in advance,
Cheers,
Lorenzo
Either option you show above will work fine.
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