Hello guys. I'm using the pubsub client library to receive data from Ibm Bluemix server to ESP nodemcu. In the callback function the payload which is received is stored in the variable "payload" with the datatype byte*. void callback(char* topic, byte* payload, unsigned int payloadLength) { f…

Converting byte data to hex and then Sending HEX values via Arduino serial

system October 2, 2017, 10:14am 12

Did you try the code in reply #9?

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