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Graphics on Nextion

I have tried to draw a grapic bar with the ProgressBar component, my problem is in the moment of the send of data on Serial.

I need to send 25 values to 25 different bars, and send only 16 values. I using a raspberry PI as MCU, I need to know the limit of the Serial or something, because the values are reading but not are sending..

Sorry for my skill of english. 


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discover by reading, this one closed Nov 15, 2017.