Data Logging with Arduino and an SD Card Module
Data logging is a crucial aspect of many IoT, environmental monitoring, and sensor-based projects. With an Arduino and an SD card module, you can store sensor data, timestamps, and other readings...
38-3D Blog
Data Logging with Arduino and an SD Card Module
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How to Use a 0.91" OLED Display with Arduino
A 0.91" OLED display is a small, high-contrast screen perfect for displaying text, graphics, and sensor data in Arduino projects. This guide will walk you through wiring, coding, and displaying text...
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Beginner’s Guide to Soldering: Tools, Techniques, and Tips
Soldering is an essential skill for anyone working with electronics, DIY projects, or circuit repairs. It allows you to create strong, conductive connections between components. Whether you're a beginner or...
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Understanding Ohm’s Law: A Beginner’s Guide to Voltage, Current & Resistance
Ohm’s Law is a fundamental principle in electronics and electrical engineering, describing the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. Whether you’re a beginner or...
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Common Arduino & Raspberry Pi Errors and How to Fix Them
Both Arduino and Raspberry Pi are widely used for DIY electronics, robotics, and IoT projects. However, beginners and even experienced users often encounter common errors. This guide covers frequent issues and...
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Best Multimeters for Beginners
Multimeters are essential tools for electricians, engineers, and hobbyists working with electrical circuits. For beginners, choosing the right multimeter can be challenging with so many options available. This guide highlights...
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Best Oscilloscopes for Beginners
Oscilloscopes are essential tools for engineers, technicians, and electronics hobbyists who want to analyze signals, debug circuits, or conduct precise measurements. For beginners, choosing the right oscilloscope can be daunting...
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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...
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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...
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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...
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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...
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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,...
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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...