Arduino RPM Counter Using an Optical Sensor
Arduino RPM Counter Using an Optical Sensor Building an RPM (revolutions per minute) counter is a classic and useful Arduino project. This guide walks you through creating an optical tachometer...
38-3D Blog
Arduino RPM Counter Using an Optical Sensor
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How to Use the BMP180 Barometric Pressure Sensor with Arduino
The BMP180 is a high-precision barometric pressure and temperature sensor that can be easily interfaced with Arduino using the I2C protocol. It is widely used in weather monitoring, altitude measurements,...
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How to Use the TXS0108E Voltage Level Shifter with Arduino
The TXS0108E is a bi-directional voltage level shifter that allows safe communication between devices operating at different voltage levels, such as 3.3V and 5V. It is commonly used to interface...
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How to Use the Micro SD Card Module with Arduino
The Micro SD Card Module allows Arduino to read and write data to a microSD card, making it ideal for data logging, storing sensor readings, or managing files in Arduino...
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How to Use the CD74HC4067 Multiplexer with Arduino
The CD74HC4067 is a 16-channel analog/digital multiplexer/demultiplexer that allows you to expand the number of input or output pins on your Arduino. It is particularly useful in projects requiring multiple...
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How to Use the KY-040 Rotary Encoder with Arduino
The KY-040 rotary encoder is a mechanical device used to measure angular position or rotation. It is commonly used in volume controls, menu navigation, and position tracking in robotics. This...
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How to Use the RC522 RFID Module with Arduino
The RC522 is a popular RFID module used for wireless communication and identification. It is widely utilized in access control systems, contactless payment systems, and inventory tracking. This tutorial will...
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How to Use the GY-302 BH1750 Light Intensity Sensor with Arduino
The GY-302 is a breakout board featuring the BH1750 light intensity sensor, which measures light levels in lux. It communicates with microcontrollers via the I2C protocol, making it an excellent...
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How to Use the TCA9548A I2C Multiplexer with Arduino
The TCA9548A is an I2C multiplexer that allows you to connect multiple devices with the same I2C address to a single Arduino. It achieves this by creating up to eight...
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How to Use the AT24C256 EEPROM with Arduino
The AT24C256 is a 256-kilobit EEPROM that provides non-volatile storage, allowing data to persist even when the power is off. It communicates with a microcontroller via the I2C protocol, making...
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How to Use the HC-SR501 PIR Motion Sensor with Arduino
The HC-SR501 is a popular Passive Infrared (PIR) motion sensor module that detects movement by measuring infrared radiation changes in its surroundings. It’s commonly used in motion-activated lighting, security systems,...
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How to Use the MAX3232 RS232-to-TTL Converter with Arduino
The MAX3232 is an RS232-to-TTL level converter that allows Arduino to communicate with RS232 devices like older computers, GPS modules, and industrial equipment. It converts the voltage levels between RS232...
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How to Use the MPR121 Capacitive Touch Sensor with Arduino
The MPR121 is a capacitive touch sensor controller that can detect up to 12 touch-sensitive electrodes. It’s commonly used in touch-sensitive interfaces, musical instruments, and other interactive projects. In this...
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How to Use the PCF8575 I/O Expander with Arduino
The PCF8575 is a 16-bit I/O expander that communicates with a microcontroller via the I2C interface. It allows you to expand the number of input/output pins on your Arduino, making...