In this tutorial, we will build a digital ultrasonic distance meter. We will use a 16×2 LCD display to view the distance measured. We are using ultrasonic range finder HC-SR04 for this project. The HC-SR04 sensor measures the time taken by the sound waves transmitted after meeting an object that reflects them.
SCHEMATIC PARTS LIST PCB DOWNLOADS IR_remote_volume_controller.pdf
The project shown here is a microphone preamplifier that provides high quality amplification, optimized for use in computers, media and mobile applications. The pre-amplifier provides a differential input stage, making the device particularly effective when layout constraints force the microphone amplifier to be physically remote from the ECM microphone. This project features adjustable gain using…
Here is a simple and a low cost Lithium Battery charging breakout board. This article is about the charger breakout board based on TP4056. It uses a Micro USB for connecting the breakout board to any computer or ‘USB wall adapter’. It works with linear charging method. It offers 1000mA charge current by default but…
The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4Ω load and 38W into 8Ω with 0.1% THD+N from 20Hz–20kHz. The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe) protection circuitry, puts it in a class above discrete and hybrid amplifiers by…
There are hundreds of electronics projects published on buildcircuit.com. This time we have selected few projects that should be easier for beginners to start with. Complex and difficult projects just frustrate the beginners. The best thing about the listed projects is that all come with good assembly images and most of the projects can be…
Light Sensitive Audio Oscillator project is a fun-loving project which will create different sound effects depending on the light falling on the sensor SPECIFICATIONS Supply input 5 ~ 12 VDC Output 8 Ohms, 0.5 W Speaker Terminal pins for supply voltage and speaker connection Power-On LED indicator PCB dimensions 38 mm x 44 mm SCHEMATIC…
I recommend you to read and understand the basic theory of crystal radio published on this article:Â http://www.buildcircuit.com/how-to-make-a-batteryless-crystal-set-radio/ Making a batteryless/powerless radio is a great fun, but there are also some difficulties.
This is the “Skeet” Shooting Game Project from Jaycar. The kit checks your hand and eye coordination. There are 9 green and 1 red LED. There are two switches: one is reset switch and the other is FIRE switch.
TSA3111Â is designed for audio amplifier manufacturers and DIY users. Bluetooth/LINE IN select switch and audio input port are designed as JST connectors. So, users can install this amplifier board in a box and connect an external switch and RCA/Mono plug to make their own audio amplifier.
This video shows you how to build a regulated power supply using LM317. This post is a supporting article to the following posts: Breadboard power supply- DIY kit Optional link Make a power supply using LM317 This video does not belong to BuildCircuit. You can purchase a simple ‘breadboard power supply using LM317’ at buildcircuit.net. www.buildcircuit.net…
How many times have we wished to have a robot that goes around the house avoiding obstacles? Creating this project with Arduino Uno, an HC-SR04 module and two wheels will take us to be a child. The robot is able to avoid obstacles, thanks to the ultrasonic range finder sensor that senses obstacle coming on…
This PROJECTS will turn your favorite music into light effects, a microphone picks up the sound and gives light effects with 6 Red LEDs, ideal for creating fun atmosphere at parties & discos. Supply 9V-12V DC. FEATURES Supply 9V-12V DC (PP3 9V Battery) On Board Preset for Gain Adjust 6 On Board LEDs On Board…
We can use the logic of making an automatic light detector to make a simple water level indicator.We just need to remove LDR from the circuit and put the wires into water, then it simply works as water level indicator. There is a specific resistance between the wires that are dipped into water and conduction of electricity through water gives biasing voltage to base of transistor.
The sensitivity can be adjusted using VR1. Put 470K variable resistance in VR1.
This experiment makes the use of  ‘Android- Arduino BTCOMM Shield’  and Amarino. If you are not familiar with the shield, visit this page. This experiment is similar to my previous tutorials Sensor Graph basic experiment and Sensor graph and LED controller together. If you have never worked with Amarino, I strongly recommend you to visit Amarino page…
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…
