Overview of DHT11 DHT11 Sensor The DHT11 sensor measures humidity and temperature, sending values serially over a single data wire. It can detect relative humidity from 20% to 90% RH and temperature from 0°C to 50°C. The sensor has four pins, with one dedicated to serial data communication. Pulses with different TON and TOFF values …
Overview of Motion Sensor A PIR sensor detects infrared heat radiation, making it ideal for applications that involve detecting moving living objects that emit infrared radiation. The PIR sensor output is high (voltage) when motion is detected, and low when there is no motion (either a stationary object or no object present). For more information …
Overview of Magnetometer HMC5883L Magnetometer Module The HMC5883L magnetometer measures both the direction and strength of the Earth’s magnetic field, making it ideal for low-cost compassing and magnetometry applications. It detects magnetic field values along the X, Y, and Z axes, with a range from milli-gauss up to 8 gauss. This sensor can serve as …
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Overview of IR LEDs, IR Photodiodes, and TSOP1738 IR LEDs, IR Photodiodes, and TSOP1738 IR communication utilizes infrared (IR) waves from the electromagnetic spectrum. An IR LED is used to transmit data wirelessly in digital form, where 0 represents the LED being OFF and 1 represents the LED being ON. The data is received by …
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Overview of Accelerometer ADXL335 Accelerometer Module An accelerometer is an electromechanical device that measures acceleration due to gravity in units of g. It is commonly used in applications that require tilt sensing. The ADXL335 accelerometer measures acceleration along the X, Y, and Z axes and provides an analog voltage output proportional to the acceleration on …
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Overview of LM35 LM35 Temperature Sensor The LM35 is a temperature sensor capable of measuring temperatures from -55°C to 150°C. It is a 3-terminal device that outputs an analog voltage proportional to the measured temperature: as the temperature increases, the output voltage also rises. This analog voltage can be converted to digital form using an …
Introduction to ADC When interfacing sensors with a microcontroller, the sensor’s output is often analog. However, microcontrollers process digital signals, which is why we use an Analog-to-Digital Converter (ADC) to bridge this gap. The ADC converts the analog signal into a digital format that the microcontroller can process. ADC finds applications in various fields such …
Introduction to PWM Pulse Width Modulation (PWM) is a technique in which the pulse width is adjusted while maintaining a constant wave frequency. This method allows a digital source to create an analog signal effectively. PWM Generation A PWM signal has two key components that determine its behavior: duty cycle and frequency. What is the …
In this Blog, we are going to see the GPIO, so what is GPIO the name itself it has the meaning general purpose input and output. now you are having any kind of microcontroller, that has GPIO. if your having Arduino, it has 14 digital pins, 6 analog pins, if you are having Raspberry Pi it has 40 GPIO pins (models B+, 2B, 3B, 4B), if your having …
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The Arduino UNO board is one of the most popular options and an excellent choice for beginners. Over time, the Arduino UNO has undergone several revisions, with the latest being the Arduino UNO R3. While there aren’t many major differences between the versions, the most notable update is in the R3’s USB-to-serial conversion. The R3 …
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