Basic remote tester
Description: This circuit can be used for testing your TV, DVD, VCD, etc. remote control. This is the fundamental module for making infrared based object counter. This project has been derived from “Remote tester project” .
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RC module
Description: An RC circuit is used to introduce time delay in circuits. A combination of resistor and capacitor gives a time constant. The following circuit shows a basic RC circuit. In the figure C1(100uF) works as a storage capacitor. When you press the switch, the capacitor charges quickly and provides base current to the transistor…
DIY KIT 23- CD4511 based seven segment display kit
This is a basic electronic kit for beginners and hobbyists. It has a CD4511 chip that is a BCD to 7 segment latch decoder driver. It is a very popular chip and used widely in seven segment display projects. You can send pulses to this kit (via NE555 or any other pulse generator) and the…
The simplest and the cheapest FM transmitter- Do-it-yourself(DIY) kit for amateurs
We are not this FM transmitter DIY Kit with an enclosure. Here’s one of the easiest, simplest and the most popular FM transmitter for amateurs and electronics beginners. With this DIY kit, you can transmit your voice or audio over an ordinary FM radio within the FM broadcast band. It is a DIY kit designed…
DIY KIT 32- FM receiver DIY Kit
This is yet another FM receiver DIY kit for electronics beginners and hobbyists. It uses the chip CXA1619. The kit package comes with all the components required to build the kit. The schematic and description is shown below: This is the PCB of the kit. The silkscreen labels can guide you through soldering. This is…
Toggle switch
This 555 timer circuit below toggles the LED when a button is pressed. Pins 2 and 6, the threshold and trigger inputs, are held at 1/2 the supply voltage by the two 10K resistors.
SINGLE 18650 LIPO BATTERY TO 5V BOOST CONVERTER
This small board is based on the CS5171 boost converter from ON Semiconductor. The board is configured to be used with a single 18650 LiPo battery. The circuit converts single-cell 3.7V LiPo battery voltage to 5V with a load current up to 400mA. Board has been designed to fit on the backside of a single-cell battery holder…
TSTR04 – 4 Channel Outputs 4 Temperature Sensors USB Relay (Thermostats)
This is a TSTR04 USB relay board which has an OLED display and 4 temperature sensor ports. In “Normal” mode, you can easily control this relay board by your computer or smartphone via Bluetooth. In “Auto” mode, you can set a threshold value, to let the relay turn ON/OFF based on the temperature. So, you can use it…
Digital object counter kit- Assembly tutorial
This article is about assembly of counter module used with digital object counter DIY kit. If you have come to this page directly from a search engine, please visit this page first to know about digital object counter. The suggested page gives you more details about this kit. You will eventually come back to this…
2 x 50W Class D Bluetooth Audio Amplifier Board – TSA3116
This is a 2 x 50W audio amplifier board with AudioB plus Bluetooth module. It has a perfect class-D architecture (based on TPA3116D2) and every channel has 50W power output. Both channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC 10V-24V power supply, it can be used to drive…
Test UM3481 musical circuit
The M348X series IC is a mask-ROM-programmed multi melody generator , implemented by CMOS technology.It is designed to play the melody according to the previously programmed information and is capable of generating 16 songs with 3 instrument effects : piano, organ and mandolin. The device also includes a pre-amplifier which provides a simple interface to  the driver circuit. The M3481…
2 Channels Relay Test Using Arduino Mega and Ethernet Shield
I found this project on Fritzing.org. This is just a simple project for testing a 2 channel relay using an Ethernet shield over an Arduino Mega. In place of LEDs, you can connect 220V AC lamps. If you have not used relay before, check out this article. The Arduino sketch has been compiled and there is…
How to use 315Mhz RF transmitter and receiver modules with arduino
Description:Â This wireless transmitter and receiver pair operate at 315Mhz. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only transmitters, they will only work communicating data one-way, you would need two pairs (of different frequencies) to act as a transmitter/receiver pair….
DIY KIT 64- ClockIt digital clock DIY kit using Arduino
This is a great kit to learn the basics of soldering. The Sparkfun ClockIt is a basic alarm clock with buzzer based on the ever-popular ATMega328. If you’re just learning how to solder, this kit should take you 15-20 minutes. If you’re a weathered pro at soldering, this is a great relaxing build that should…
10W STEREO AUDIO AMPLIFIER
This project is a 10W Stereo Audio Amplifier based on TDA1521 IC. DESCRIPTION The project built around Philips TDA1521 IC, The project provides high quality audio 2X10W Audio output. The device is specially designed for mains fed applications, (e.g. Stereo TV Sound and Stereo Radio). The circuit designed for asymmetrical power supply systems. SPECIFICATIONS It has few external components…
DIY KIT 26- 16×3 Audio spectrum DIY kit
This is an RGB LED contained 16×3 audio spectrum DIY kit for electronics beginners. You can simply connect this kit to any audio source and get a beautiful spectrum on the LEDs network. There is a microphone also on the kit which picks up sounds nearby.
DIY KIT 50- LM358 breathing LED circuit
This is a basic electronic kit based on LM358. The LM158 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain…
EasyEDA’s Gerber viewer for beginners and experts
Few months ago, we had published an article about EasyEDA and described about its features. We see EasyEDA as one stop solution for all the PCB design and manufacturing processes. Check out the previous article about EasyEDA. EasyEDA has been providing most of the services related to PCB/circuit design and manufacturing to its customers. The only thing…
Arduino Project 10- Traffic Light
This is a simple traffic light project. It is a very easy project to accomplish and serves as a lesson to learn two basic components in electronics, LEDs, and resistors. Components required: D1 D6 2 Red LED D2 D5 2 Yellow LED D3 D4 2 Green LED R1 R2 R3 R4 R5 R6 6 220…