PCB

A printed circuit board (PCB) mechanically supports and electrically connects electronic components or electrical components using conductive tracks, pads and other features etched from one or more sheet layers of copper laminated onto and/or between sheet layers of a non-conductive substrate. Components are generally soldered onto the PCB to both electrically connect and mechanically fasten them to it. Printed circuit boards are used in all but the simplest electronic products. They are also used in some electrical products, such as passive switch boxes.

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Analog Light Sensor + Light Sensitive Switch using OPT101

“You may have seen many light-sensitive switch circuits based on an LDR sensor. Usually, the sensitivity of the LDR based light sensor is poor. We wanted a very sensitive light switch hence we decided to make a circuit based on …

Designing a 555 Timer on Discrete Elements

“I designed the circuit board for the NE555 timer and it works! Try it too! Hello! My name is Vladimir, I am a programmer and electronics developer. Analog circuitry has always been my weak point, and therefore the idea came …

Full Digital FM Receiver With Arduino and TEA5767

“FM transmitters/receivers are among the top favorite circuits of any electronic enthusiast. In this article/video, I have introduced a complete digital FM receiver design that has equipped with an LCD screen and three push-buttons. It can search for …

Lead Acid Battery Voltage Monitor using ATMEGA328

“Monitoring the voltage level of a 12V Lead Acid Battery (SLA) is easy and simple with this project. The board is made using an ATMEGA328 micro-controller and 12 x 5mm LEDs. The ATMEGA328 microcontroller senses the analog voltage on A3 …

Neopixel Led Ring Ornament

“Hi and happy holidays to you all! If you take look at my profile, it’s clear that I’m somewhat of an LED addict. This addiction more or less began a few years ago when tinkering with commonly available …

Optically Isolated Analog Input Module for Arduino

“This is an isolated analog input module that is useful for interfacing Analog signals of various types originated from analog sensors and field devices. The module is very useful for in-process controls, factory automation, industrial applications, etc. Interfacing an analog …

Raspberry Pi CPU Temperature Indicator

“Previously I had introduced simple raspberry pi (Hereinafter as RPI) operational status indicator circuit. This time, Ill explain some more useful indicator circuit for RPI running as headless (without monitor) manner. The circuit above shows CPU temperature into 4 different …

World’s Slimmest NeoPixel LED Matrix

“This is a 8x8 WS2812b NeoPixel LED matrix that is completely flat surface and has the same 1.6mm height as a normal PCB. I always had this idea of what would have happened if we can put the components …

3D Printed Guitar That Lights Up As You Play

“Several years ago I built a CNC router with the express purpose of creating my own guitar. Unfortunately however, I never got around to it. Two years back I was getting into 3D printing in a big way and started …

DIY High Efficiency 5V Output Buck Converter!

“I wanted an efficient way of stepping down higher voltages from LiPo packs (and other sources) to 5V for electronics projects. In the past I have used generic buck modules from eBay, but the questionable quality control and no name …