LM386
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Simple Arduino Audio Player and Amplifier with LM386 Adding sounds or music to our project will always make it looks cool and sounds much more attractive. Especially if you are using an Arduino and you have lots of pins free, you can easily add sound effects to your project by just investing in an extra SD card module and a normal speaker. In this article I will show you how easy it is to Play music/add sound effects using… |
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Simple DIY FM Receiver Circuits on the Internet - Do they Really Work? Recently, we thought of building a simple FM receiver circuit, so, like always, we started googling for possible circuits that can be used to fulfil our requirements, and as expected, we found a lot of circuits on the internet, but the question remains, how good or useful will they be when we put those circuits to the test? Because just like us, we found a lot of… |
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Dog Barking Security Alarm using Arduino, PIR Sensor and Dog Barking Sound Module The need for home security alarm systems nowadays is a serious demand. As the number of crimes is increasing every day, there has to be something that will keep us safe. A motion sensor dog barking alarm can be a great choice for that purpose. The sound will alert you when someone approaches the house. They can also deter burglars from deciding to enter a home. … |
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DIY ESP32 Based Audio Player DIY Music players are fun to build, and we previously built a few music players using Arduino and a dedicated MP3 module. Now we are using the ESP32 speaker output to build an interesting audio player, in which you can add sound effects by just connecting an extra speaker to the ESP32. Here we will use LM386 and a speaker with ESP32 to play music files. The audio… |
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Arduino Based FM Radio using RDA5807 Today almost everyone uses their mobile phones to listen to music, news, podcasts, etc. But not long ago we were all depending on local FM Radios to get the latest news and songs, slowly these Radios are losing popularity but in emergencies when the internet is down, radios place an important role to transmit information to the users. Radio signals are always present in the… |
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Arduino based Text to Speech (TTS) Converter Text-to-speech or TTS system converts normal text into Speech. This tech enables the system to speak out the text in a human voice. There are many examples of Text to Speech conversions like the announcements at public transport, the customer care calls, voice assistants in your smartphones, or the navigation menu of any machine. You can even find the TTS in Microsoft Word… |
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Simple Microphone to Speaker Amplifier Circuit You must have seen someone speaking on the MIC and the amplified voice coming from the speaker, how this is possible? Is there any circuitry between MIC and speaker of we can directly connect Microphone with speaker to get it working? In this circuit, we learn to build a simple Microphone to Speaker system, in which input sound is given to the MIC and we hear the amplified… |
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Audio Voice-over circuit using LM386 At many places, like public speeches or some musical program, where loudspeaker is used, we hear music and voice from the same speaker. You might have noticed that as soon as someone starts speaking into the microphone, the music from the loudspeaker stops and we start to listen the voice of the speaker. And vice versa when person stops speaking, the music starts again. In… |
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IR based Wireless Audio Transmitter and Receiver Circuit Infrared is the most commonly used wireless data transfer medium for limited range, and we already covered about simple IR Transmitter and Receiver circuit. Today in this Article, we will learn how to build a Crude Wireless Audio Transfer Circuit Using IR LEDs. Using this circuit you should be able to play songs from your IPod, mobile or computer to an external speaker… |
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Arduino Based Guitar Tuner Hi guys, during the last few weeks, I’ve been working on reconnecting with my love for the guitar. Playing the box guitar was how I relax few years back before the saxophone took over. Going back to the guitar, after 3 years of rarely strumming a chord, I discovered amongst other things that I no longer knew how each of the string should sound, to put it in my friend’s words… |
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Simple Two Way Intercom Circuit Most of the schools and offices have intercoms to communicate with people inside a building or a particular campus. These are just like landline phones but, you do not need an operator, the voice received from one end will be directly transferred to the receiver on the other end. In this circuit we are going to build a very Simple Intercom Circuit using which you can… |
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Headphone/Audio Amplifier Circuit on PCB using LM386 In this project, we are going to make a Headphone/Audio Amplifier by using self-designed PCB. This project is mainly designed for amplifying the audio signal from the headphones but we can also use it for amplifying the subwoofer or speaker output, just by switching few jumpers. When we use headphones with our audio device like mobile, laptop, FM… |
