I’m using Sigfox technology, the message/data has a maximum 12-bytes payload in Hexadecimal.
-Does anyone know how to write a function that can be used to convert input parameters to Hexadecimal ?
Int to hex.
float to hex.
-How to write URL pattern for blynk cloud?
See here the section that talks about converting int to hex: https://www.arduino.cc/en/Reference.StringConstructor.
I’m sorry, but I didn’t understand your last question.