50 Pieces 2MΩ 1/4W Resistor 2000000 Ohm 5%

Description

50PCS Resistor 2.0M ohm 2000000 ohm 1/4w 1/4 w 5%

Tutorial: How to use Resistor 2.0M ohm

Resistors are fundamental for limiting the flow of current in an electronic circuit. This 2,0 MΩ (2 million ohms) resistor is ideal for projects requiring a high resistance.

What you need

• Arduino
• measurement tools like multimeter

Steps

1. Check the resistance with a multimeter.
2. Connect the red end of the resistor to a digital pin of the Arduino.
3. Connect the black end of the resistor to ground (GND) of the Arduino.
4. Write an Arduino sketch to measure the resistance using the ‘analogRead’ command.
5. Verify the obtained values on the Arduino serial monitor display.

Example code

int sensorPin = A0; 
 int resistanceValue;
 void setup() { Serial.begin(9600); }
 void loop() { resistanceValue = analogRead(sensorPin);
 Serial.println(resistanceValue, DEC); }

Mini project

Create a simple alarm system that activates a siren when the resistance in the circuit changes.

Common mistakes

• Do not check the resistance value before use.
• Connect the wrong ends of the resistor.
• Use a resistor that is too high for your project.
• Ignore power dissipation when using a resistor with a high resistance value.

Recommended accessories

• Arduino Uno
• Digital Multimeter
• 5V Relay
• Electronic Siren

Frequently asked questions

How much power can this resistor dissipate?
Check the datasheet. For most 1/4W resistors, the maximum value is 0.25 watts.

What other types of projects can I do with this resistor?
You can use it to create a current control system or to adjust the brightness of an LED circuit.