In this tutorial, we will learn to make a buzzer sound like an ambulance siren and at the same time we will flash an LED. We will learn to change the frequency of the sound to make a two-tone sound. If you want you can insert a potentiometer to increase or decrease the volume.
TSA1740 is a 2x20W Bluetooth 5.0 audio amplifier board. It has a digital amplifier chip YDA174 on the board. It is a 20W×2CH high performance digital audio power amplifier IC with two DSPs. This board can be powered by any DC 10V-18V power supply. It can be used to drive any 4Ω or 8Ω passive speakers.
Before making an Arduino programmer on breadboard using FT232RL, you need to know about arduino, breadboard and USB to serial FT232RL break out board. If you are an electronic novice, I recommend you to visit this page to get ideas on building simple electronic projects on breadboard.
Description: You can make an up counter using a counter module and a multivibrator module. First make a simple multivibrator, then make a counter and then combine them.Â
In this tutorial, we will build a circuit with Arduino Uno that can read voltages from 0 to 30V DC and display them on the 16×2 display, the ideal project to build our DIY voltmeter. Thanks to the analogue inputs, that can be used to measure voltages from 0 to 5V. For higher values ​​we…
This is a simple serial lcd do-it-yourself (DIY) kit based on Arduino. I derived this kit from the open source eagle file available on sparkfun.com. Â The only difference is that I used low cost components to make it more affordable. It uses the libraries and examples published on the quickstart page of sparkfun.
In this tutorial, will learn to use our Arduino board to display the temperature and humidity on the 16×2 LCD display using a DHT-11 sensor. For this project, you need to download the DHT11 library. You can download the library from this page. A long time ago, we had published a similar article. Please check…
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.
LCD is very important part of many DIY and industrial projects. The 16X2 LCD shield has been designed to develop LCD related projects using 28-40 Pin Pic development board or DSpic development board, along with LCD this shield includes LMD18201 DC Motor driver , 2 Trimmer potentiometer and 4 tact switches with jumpers. Jumpers can be…
Here is a very simple breadboard power supply kit that takes power from a DC wall wart and outputs a selectable 5V or 3.3V regulated voltage. The .1″ headers are mounted on the bottom of the PCB for simple insertion into a breadboard.
This is a simple wrist watch DIY kit for electronics hobbyists. Anyone with basic soldering experience can build the kit. This is a copy of Solder:Time watch kit from https://www.spikenzielabs.co. It uses DS1302 clock chip.
This video shows all the steps to build the HEE-HAW Siren Project from Jaycar. The kit is based on NE555 IC. The timer NE555 IC is configured in astable mode. You will hear a hee-haw siren similar to an ambulance and you will see the two green and red flashing LEDs. The kit is very…
The single supply microphone pre-amplifier amplifies the output signal of an electret capsule microphone to audio line levels. An op amp is used as a trans-impedance amplifier to convert the output current from the microphone in to a signal level voltage. The circuit works with 9V so it is good choice for battery operated systems….
This is a simple 4-in-1 do-it-yourself (DIY) kit from BuildCircuit. The kit has four different circuits that can be switched on separately or together at a time using a DIP switch. The four circuits are: 1. Dark sensor using LDR. 2. A latch circuit using NE555 timer. 3. Astable circuit using NE555 timer. 4. A…
Description: A multivibrator has identical components(capacitors, transistors and resistors) arranged on the left and right hand sides that can be used to implement a variety of simple two-state systems such as oscillators, timers and flip-flops. In a multivibrator circuit, increasing the value of the two electrolytic capacitors increases the time each LED remains on/off.Â
TSA3117B is designed for mass production 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 is a USB or computer powered amplifier with a built-in USB digital audio decoding feature. It comes with a single USB plug and there is no need of an external power supply and no external audio cable. It is a simple and convenient kit to build a basic amplifier. It uses a high-efficiency class…
If you have come to this page from a search engine, please read this page first, you will eventually come back to this page again. The first page gives you the idea of Amarino Nano 1.0 and its features. Steps for experiments:Â Before you start the experiment, stack the Arduino Nano and Bluetooth modules on…
