This is a 2x100W audio amplifier board with a new Audio B plus Bluetooth module that supports Apt-X. It has integrated ST high-performance TDA7498 chip which supports dual channel audio amplification. Both of the channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC12V-39V* power supply.
This is a simple motion sensor project using Arduino. A 220V AC lamp is connected to a 5V relay and the relay is activated once the motion sensor senses motion and sends a signal to the Arduino. List of materials Arduino Uno ( Rev 3 ) Sensor ( PIR ) HC-SR501 Keyes SRD-05VDC-SL-C Relay Module or any 5V relay module…
This digital Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system. It comes with an I2S output digital AudioB plus Bluetooth module. I2S digital output and music resampling frequency is 48KHz. Apt-X supported….
This is an “Audio VU Meter” or “Sound Level Meter”, it is a general-purpose bar-graph Audio VU meter designed for fun projects. All you need is to hook up one wire to the output of the audio amplifier’s speaker pin along with GND and see the magic. The response of the circuit is very fast…
This is a very simple NE555 based electronic kit for electronics beginners. It is a basic piano kit. I have written a similar project article before on this website. You can see it here. The kit has been built in an astable multivibrator mode. Every press of the switches results in a change in resistance in…
This works same as the other dark detector circuit. When light is falling on LDR, its low resistance drives transistor Q1-BC547 into conduction. This keeps transistor Q2 cut-off due to low base bias. The D1-LED does not get power as long as ambient light falls on LDR. When the resistance of LDR becomes high in…
With this project/application, you can make a light sensor dependent lamp. You can make a light sensor or dark sensor with this application. The light sensor of your Android smart phone senses ambient light present in your room and sends commands to Arduino board. Your Arduino program determines the behaviour of the LED, whether it…
4 Channel Relay Shield for Arduino UNO is a simple and convenient way to interface 4 relays for switching applications in your project. Very compact design that can fit on top of Arduino UNO. Project requires 12V DC supply, all 4 trigger inputs require TTL signal, Relay-1 to Relay-4 inputs connected to D8 To D11…
This is yet another sound activated LEDs circuit. I have previously published a similar project.
BuildCircuit has previously published a project on HCSR04 ultrasonic range finder module. You can checkout the article from this link. Now, we have another article on HCSR04. It is as simple as the previous project. HCSR04 ultrasonic range finder module: The HC-SRO4 is an ultrasonic sensor which uses sonar to detect objects at a distance…
This is a different type of digital dice. We have previously seen electronic dice with 7 LEDs. In this project, we have a seven-segment display, not LEDs. When you press the tactile switch the numbers increase from 0 to 9, and when the switch is released it stops at a random number. Using the 2…
This is a Wi-Fi Relay remote control kit that includes: 1 x 2 Channel USB/Wireless Relay Module 1 x Wi-FiBee WiFi module 1 x Xbee USB adapter 1 x Mini USB cable You can easily control this relay module by your computer using Wi-Fi. Note: Please remove the Wi-Fi module when you use USB connection. USB/Wireless Relay module…
BuildCircuit has written few articles about audio amplifier and music modules. One of the most popular examples is “Audio amplifier using LM386“. This article is about a bit advanced audio amplifier made using TDA7052A. Download datasheet of TDA7052A It is not wise to connect an 8 Ohm loudspeaker directly to Arduino microcontroller pins. When we…
I have written several projects related to LM386 based audio amplifier. LM386 is a versatile and a widely popular audio amplifier chip. The LM386M-1 and LM386MX-1 are power amplifiers designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an…
This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system.
Arduino Code: Download Edit the code for getting the output on serial monitor. I recommend you to see the listed posts before you start this project.
The range of a Wi-Fi signal can be influenced by several factors, which can impact its coverage and strength. Understanding these factors can help you optimize your Wi-Fi network for better performance. Here are the key factors that affect Wi-Fi transmission range: Frequency Band: Wi-Fi operates in different frequency bands, such as 2.4 GHz and…
This tiny board designed to drive bidirectional DC brushed motor of large current. DC supply is up to 50V DC. A3941 gate driver IC and 4X N Channel Mosfet IRLR024 used as H-Bridge. The project can handle a load up to 10Amps. Screw terminals provided to connect load and load supply,…
