On the Arduino BT, they are connected to the corresponding pins of the WT11 Bluetooth® module.
#ARDUINO BOARD SERIAL#
On the Arduino Diecimila, these pins are connected to the corresponding pins of the FTDI USB-to-TTL Serial chip. Used to receive (RX) and transmit (TX) TTL serial data. Each pin has an internal pull-up resistor which can be turned on and off using digitalWrite() (w/ a value of HIGH or LOW, respectively) when the pin is configured as an input. In addition to the specific functions listed below, the digital pins on an Arduino board can be used for general purpose input and output via the pinMode(), digitalRead(), and digitalWrite() commands. Digital I/O Pins:đ4 (of which 3 provide PWM output).Digital I/O Pins:đ4 (of which 6 provide PWM output)ĪTmega168 (used on most Arduino Diecimila and early Duemilanove).USB (used for uploading sketches to the board and for serial communication between the board and the computer can be used to power the board) (yellow).Toggles External Power and USB Power (place jumper on two pins closest to desired supply) - SV1 (purple).External Power Supply In (9-12VDC) - X1 (pink).Power and Ground Pins (power: orange, grounds: light orange).
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