I am trying to upload a single program to a number of Arduinos one by one. But it is time consuming. So I would like to know if there is any way to upload the code at once to multiple Arduinos.
I have tried as follows:
3 Arduino with all the Rx, Reset, Vcc, Gnd line connected to each other. Only pin left is Tx line. So I just connect the Tx line of one arduino and program it and so on.
Is there any other way?