7/22/2023 0 Comments Arduino analogwrite groundĭo NOT connect the 5V to the Ground! This will short circuit the Arduino!.REMOVE THE POWER WHEN WIRING STUFF UP! Just unplug the USB cord. The grove down the middle lets you plug in more complex components, many of which are integrated circuits.Ĩ.3 Safety These rules apply in general for any wiring. These rows are used to make connections for the components of your circuit. Each of the 5 pins in a horizontal row are connected together. There are 30 horizontal rows of 5 pins running along both sides of the groove. The two innermost regions are divided by a vertical groove. If you look carefully at the wires, there is a red wire running from the Arduino pin labelled 5V to the left hand positive power bus, and a black wire running form the Arduino pin labelled GND to the left hand ground bus. The Arduino can be used as a power source. Normally, the red column is the positive (+) power bus and the blue column is the negative (-) or ground bus. All of the pins in the red column are connected together, as are all of the pins in the blue column. The two outermost regions have a red and blue vertical line. The board is divided into 4 regions, left to right. It is used to build small circuits that connect to the Arduino interface pins. We will get to these later.įinally, you should note that in the lower middle is the reset button which is used to reset the board if it gets stuck, or if you want to restart your program that is running on the Arduino.Ĩ.2 The Breadboard The white block with holes in it is called a breadboard. These are labelled A0 to A15, and appear on the left side of the circuit board of the Arduino Mega and pins A0 to A5 on the Arduino Uno. The other form of pin is the analog input. There are special digital pins that you should avoid until later: pins 0, 1, 14 to 19 are used for serial communication. It is labelled L on the circuit board, and is adjacent to digital pin 13. These pins can be configured as input mode (that is, to read from the outside world), or as output mode (that is, to write to the outside world).ĭigital pin 13 also has a small green LED on the board attached to it. These pins are used to send binary data (0 and 1) between the Arduino and the outside world. The most common pins are the digital I/O pins, numbered 0 to 53 on the Arduino Mega and 0 to 13 on the Arduino Uno. The power pins (top left) are used to provide power to the devices that are connected to the Arduino. The Arduino has 3 kinds of pins on the board. Around the edge of the blue circuit board are black connectors that you plug wires into. At the top is a USB connection to a "normal" computer that is used to program the Arduino, and to give it power. The computer is the large square "chip" in the middle of the blue circuit board. Notice how there is no keyboard, mouse, or screen. Building Circuits Arduino Intro Labs for Tangible Computing Arduino Intro Labs for Tangible Computing - 8.
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