Go to File -> Examples -> Firmata -> StandardFirmata, and press the Upload button on the Arduino SE (see image 2).ħ. Run the arduino.exe program in your Arduino SE folder.Ħ. Download the Arduino library for Processing from here, and copy it into your Processing/libraries folder.ĥ. Download the Processing Software Environment from here and extract it to a folder near your Arduino SE folder.Ĥ. Download the Arduino Software Environment from here and extract it to a folder (no installation required, just keep the folder in a safe place).ģ. Connect the Arduino to your computer with your A to B USB cable (your computer should install its driver automatically) - see image 1.Ģ. Through a couple of small programs, your simple LED circuit will be dancing to the beat in no time.ġ. Programming the Arduino is pretty simple. Now that we have our circuit made, it's on to the programming. Run wires from the anode side of the resistors to digital pins 12, 8, and 2 on the Arduino to complete the circuit, as shown in image 6 and 7. Run wires from the cathode rail of the LEDs to the ground outer rail, as shown in image 5.ĥ. Place the LEDs right next to the right side of the resistors, with the anode (the longer end) in the slot right next to the resistor, and the cathode (the shorter end) into the slot that is offset to the resistors by 1 slot, as shown in image 3 (see image 4 to see the difference between an anode and a cathode).Ĥ. Position the resistors so that they bridge the gap between the inner rails, as shown in image 2.ģ. This separates the left inner rails from the right inner rails, so you can connect more components. Note that on a breadboard, a line runs length-wise, halfway down the middle. Place your three resistors (I used 1kilo-ohm resistors for this example, which matched my LEDs well enough) in an evenly-spaced fashion on the inner rails of the breadboard. Run a wire from the digital GND port of the Arduino to the negative outer rail of the breadboard, as shown in image 1.Ģ. Here is how to make our simple circuit:ġ. The rails are electrically connected along their lines, so you can connect components without actually soldering them together. The breadboard has two parts: the inner rails (which run width-wise) and the outer rails (which run length-wise). It turns on the LED, wait for 1 second and turns it off continuously.In order to have the Arduino access the LEDs, you have to build a small circuit on a solderless breadboard. ■ The last part of the sketch runs the instructions within the void loop() function indefinitely. ■ The second part of the sketch defines the Arduino pin 13 as an output pin and runs once ■ The first part of the sketch defines which Arduino pin is connected to LED. ■ If the circuit is wired correctly the LED will be seen blinking indefinitely. Remember to choose the appropriate port (for example, COM6 or COM7) for the Arduino to avoid any errors while uploading. ■ Type in the following code and click the Compile and Upload button on the IDE. ■ Connect the Arduino to a computer with the USB-to-serial cable. ■ Create a new file in Arduino IDE, and call your sketch (arduino code) LED.ino or whatever you want. ■ Use ther jumper wire to connect the short leg of the LED to the arduino ground GND ■ Connect the other leg of the resistor to pin 13 of the arduino using a jumper wire ■ Connect the long leg of the LED to the column containing one leg of the resistor and the short leg of the LED to the negative horizontally-link path of the breadboard. ■ Connect the resistor across the middle area of the breadboard In this project, you will build a simple blinking LED circuit using an arduino Uno.
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