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
-
Multimeter Basics: How to Use a Multimeter for Electronics Testing
A multimeter is a versatile tool used to measure voltage, current, resistance, and continuity in electrical circuits. Whether you're working on electronics, automotive systems, or household electrical wiring, a multimeter is...
-
Oscilloscope Basics: Understanding How to Use an Oscilloscope
An oscilloscope is an essential tool for visualizing and analyzing electrical signals. It is commonly used in electronics testing, debugging circuits, and measuring waveforms in electrical and RF applications. This guide...
-
Arduino Logic Tutorial: If, For, While, and Switch Case Statements
Arduino programming uses control structures such as if, for, while, and switch case to control decision-making and loops in a sketch. These structures allow the Arduino to respond to conditions, repeat...
-
Using the MAX485 RS485 Module with the Raspberry Pi
The MAX485 module allows the Raspberry Pi to communicate using the RS485 protocol, which is widely used for industrial automation, Modbus communication, and long-distance serial data transmission. This guide will show...
-
Using a Rotary Encoder with the Raspberry Pi
A rotary encoder is a sensor that converts rotational motion into digital signals, allowing precise control over position, speed, and direction. It is commonly used in volume controls, robotics, CNC machines,...
-
Using the MAX3232 with the Raspberry Pi
The MAX3232 is a level shifter that enables the Raspberry Pi to communicate with RS232 devices by converting the Raspberry Pi’s 3.3V UART signals to RS232 voltage levels. This is essential...
-
Using the CD74HC4067 Multiplexer with the Raspberry Pi
The CD74HC4067 is a 16-channel analog/digital multiplexer that enables a Raspberry Pi to interface with up to 16 inputs or outputs using only a few GPIO pins. It’s perfect for expanding...
-
Using the BMP280 with the Raspberry Pi
The BMP280 is a barometric pressure and temperature sensor that provides accurate atmospheric pressure and temperature readings. It is commonly used for weather monitoring, altitude tracking, and environmental sensing. This guide...
-
Using the ADS1115 with the Raspberry Pi
The ADS1115 is a 16-bit Analog-to-Digital Converter (ADC) that allows the Raspberry Pi to read analog signals from sensors, potentiometers, and other analog devices. This guide will walk you through setting...
-
Using the SG90 Servo Motor with the Raspberry Pi
The SG90 servo motor is a small, lightweight servo commonly used in robotics, automation, and DIY projects. It allows precise control of angular position using Pulse Width Modulation (PWM). This guide...
-
Using a Soil Moisture Sensor with the Raspberry Pi
A soil moisture sensor allows a Raspberry Pi to monitor soil humidity, making it ideal for smart gardening, irrigation systems, and environmental monitoring. This guide will walk you through setting up...
-
Using the DS1307 RTC with the Raspberry Pi
The DS1307 Real-Time Clock (RTC) module allows the Raspberry Pi to keep track of time even when it is powered off. This guide will walk you through setting up the DS1307...
-
Using the VL53L0X Time-of-Flight Sensor with the Raspberry Pi
The VL53L0X is a Time-of-Flight (ToF) sensor that measures distances accurately using laser technology. It is commonly used in robotics, automation, and obstacle detection applications. This guide will walk you through...