Hello,
iam new to botboarduino and arduino and i have some basic understanding questions to the pins of the botboarduino. this image lynxmotion.com/images/assemb … inom02.gif already helped me a lot of understanding the botboardunino 
so the right pins 2-13 are digital pins but why are there 3 rows? so for example i want to try this tuturial arduino.cc/en/tutorial/blink to power on and off a led. so i have to connect the led to digital pin 13 but now were do i have to connect my led at the botboarduino where pin 13 contains 3 pins (gnd, tx, rx)? the short part of the led goes to ground which is the right row but were to connect the other end? RX or TX?
sry for my bad english i hope you understand what i mean
best regards
julian
On a normal Arduino board, you only have the signal pin. However, if you want to connect a normal sensor or servo, you also need voltage and GND pins (hence three pins). This approach makes connecting things to the BotBoarduino far easier than connecting them to a normal Arduino.
There’s actually and LED permanently connected to pin 13 on the board (with its own resistor) - you don’t even need a separate one.
The designers included it as something really basic you can do with the Arduino and is not “necessary” for the board.
thank you very much for your answer
i am learning the basics at the moment thats why i wanted to try this simple led blink tuturial to understand arduino basics so i can not use pin 13 because its already in use with the onboard led?
so for example when i connect a led (or something else) to pin 2 and then set pinMode(2, OUTPUT); and then digitalWrite(2, HIGH); the pin will be also powered with 5v. so the left row is for controlling and the middle row providing always voltage?
