The#define replaces the string with the value at compile time. The other is a variable that uses um memory space. You should only use that if you want to change that in the code even so then. byte ledPin =13; Would be better as it only uses 1 byte. However the proper way is. const byte ledPin=13; This flags up a warning if you try and change
Whenmy first 13 pin van came along, I just bought a 13 pin socket and 1 metre length of new cable. Made a note of 7n/7s colours and how thay matched to new cable, disconnected car battery, removed 7 pin sockets and cut the cables back under the towbar and used bullet connectors to connect all up and then taped everything up with
Theoriginal serial had 3, 5 or even 7 pins, but only one to carry the data. The extra pin for a common ground is needed so that the other computer knows what to compare the data signal with. The receive and transmit lines are crossed, so that data transmitted by computer 1 is received on the receive pin in computer 2.
Withintowbar electrics there are 2 different types of sockets: 7 pin socket. 13 pin socket. A 13 pin socket offers more functionality and is therefore more suitable for the additional
Ive seen "groov-pins" pounded in as a press fit both sides. I'd say dowels when you know you will take it apart many times, and want it to go back the same way each time. taper pins when you figure it may need to come apart someday, but not routinely. Taper pins when you want several pins to share a load. put in one, then ream for the
PinDescription. For pin description of Arduino Nano, let us assume some basic numbering. Let the numbering begin with the TX Pin (D1). So, TX is Pin 1 RX is Pin 2, RST is Pin 3 and so on. On the other side, D13 is Pin 16, 3V3 is Pin 17 etc. With this information, let us now see the pin description of Arduino Nano.
aYLj. 933 762 625 10 509 577 80 529
7 pin vs 13 pin
