Blog

How to Mount IR Sensors and Ultrasonic Modules on a Robot

Learn step-by-step how to securely mount IR obstacle avoidance sensors and ultrasonic modules on your robot car using simple brackets.

How to Use a Tilt Switch in Your Project

Learn how to wire and use a tilt switch (SW-520D) in your electronics projects. Step-by-step guide covers wiring, Arduino code, and common mistakes.

2DOF Robot Arm Claw: Servo Selection Guide

Learn how to choose the right servos for your 2DOF robot arm claw. Compare torque, speed, and compatibility for hobby robotics projects.

Ceramic vs Electrolytic Capacitor: When to Use Each

Choosing between ceramic and electrolytic capacitors depends on your circuit's voltage, capacitance, and frequency needs. This guide explains the trad...

Build a Robot Car Chassis with Speed Encoder

Learn how to assemble a robot car chassis with a speed encoder, from mounting motors to wiring the encoder and testing wheel movement.

How to Choose a Display Module for Arduino Projects

Learn how to pick the right Arduino display: OLED, TFT, or character LCD. Compare interfaces, size, and features to match your project needs.

CPLD vs Arduino: When to Use an EPM240 Board

Compare the LC MAXII Altera EPM240 CPLD development board and the TinyCircuits Tinyduino Processor Board to decide which fits your logic gate or micro...

SMA Connector Types for Antenna Projects

Learn the key differences between SMA connector types and how to choose the right one for your antenna project, including edge mount and RP-SMA varian...

How to Test a PIR Sensor Module SR505

Learn to test the SR505 mini PIR sensor module step by step. Covers wiring, output voltage checks, and common troubleshooting tips for reliable motion...

M3 Nylon Standoffs vs Metal Standoffs: Which to Choose

Compare M3 nylon standoffs and metal standoffs for PCB mounting. Learn when insulation, cost, and vibration damping matter, and when strength and grou...

3mm LED Resistor Calculator for Arduino

Learn how to calculate the correct current-limiting resistor for a 3mm LED used with Arduino, including a step-by-step process and common pitfalls.

IDC Headers and Ribbon Cables: A Practical Selection Guide

Match IDC headers and ribbon cable connectors to your project by pin count, pitch, and termination method, with clear rules for choosing 2x20 and 40 w...