The image below shows a photo of the circuit built using an Arduino Uno compatible board. As can be seen in the above two images, a blue wire connects from the free leg of the LED to pin 13 of both Arduino boards. The image below shows the connection to a MEGA 2560.įinally connect the long pin of the LED to pin 13 of the Arduino Uno or MEGA 2560. In the same way, connect the free pin of the resistor to the GND pin of an Arduino MEGA 2560, if using this board. As can be seen above, a black wire connects the free resistor leg to an Arduino Uno GND pin. Of course this results in the short leg of the LED connecting to the resistor.Ĭonnect the free leg of the resistor to one of the Arduino GND pins. Orient the LED with the longer pin at the left. One of the LED pins is longer than the other, as the inset in the above image shows. Most important is inserting the LED the correct way around. Insert the LED into the breadboard as shown in the above image. This ensures that the resistor leads are not connected together, or shorted out. As can be seen in the image, the resistor straddles the middle channel of the breadboard. Build the Arduino Breadboard Circuitīend the legs or pins of the 470 ohm resistor down and plug the resistor into the breadboard as shown in the image below. While the previous example shows a 3 digit 5% tolerance resistor, the Wikipedia resistor color code shows 4 digit 1% tolerance resistors as well. Finally, see the Wikipedia resistor color code for another illustration on how to read resistor values. In addition to the above example, see resistors for beginners in electronics that contains more information on resistors and the resistor color chart. The gold band at the right represents the tolerance of the resistor. This means the resistor value is 470 ohms, or 470Ω. Place the number of zeros after the first two numbers and we get 470. In this example the value is 1, which means one zero. The third value represents the number of zeros in the resistance value. In this example these are 4 and 7, so the first part of the resistance value is 47. The first two values represent the first two numbers of the resistance value. The three colored bands on the left of the above resistor represent the value of the resistor in ohms. As can be seen in the image below, the values of resistor color bands are found in the resistor color code chart. As shown above, yellow has a value of 4, violet is 7 and brown is 1. The following image shows a 470 ohm 5% tolerance resistor.Įach color band of a resistor has a value. To clarify, a 470 ohm resistor has color bands of yellow, violet and brown. Use a 470 ohm resistor in this easy Arduino circuit for beginners. For this example a blue LED is used, but you can change between different colored LEDs during the tutorial.Īlso see the article on LEDs for beginners that has more basic information on Light Emitting Diodes. In fact, that is a good description of what an LED does. Find the components in the table of that part of the tutorial. These are components from the first part of this Arduino tutorial for beginners. Secondly get a 470 ohm resistor as described in the following sub-sections. Get the components to be used in the Arduino breadboard circuit together. After this is an explanation on how to build the circuit. The following sub-sections show how to identify electronic components used in the easy breadboard circuit. Build an Easy Arduino Breadboard Circuitīuild an easy Arduino breadboard circuit with a breadboard, LED, resistor and connecting wires or jumpers. It is required to have the Arduino IDE software installed and tested on an Arduino board before continuing. Build a Breadboard Circuit for Beginners in ArduinoĬomplete the previous parts of this Arduino tutorial for beginners before continuing with this part. It consists of a resistor, LED and connecting wires. The image below shows the simplest Arduino breadboard circuit.
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