This is a 2x8W audio amplifier board integrated with Bluetooth 4.0. It has a perfect class-D architecture (based on TPA3110D2) and every channel has 8W power output. This board can be powered by any DC 8V-16V power supply. It can be used to drive any 4Ω or 8Ω passive speakers.
This project describes how to build a “soft touch” switch. By “soft touch” we mean that you have to push once to set device ON and push again to set device OFF. This kind of switch works by latching a relay to ON state with push of a button and with another push latch is…
This is a very interesting project for beginners. We had made similar project several years ago and published on BuildCircuit.COM. Check out this page. In this project, music from an audio source can be transmitted wirelessly via infrared medium. There are two kits included in this package. One is transmitter and the other is a receiver….
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…
The circuit is ready for testing. Connect battery terminals and see the output. As you block light falling on LDR(Light dependent resistor), the LED glows.
OUTPUT:
[youtube]http://www.youtube.com/watch?v=qmWAgoHwy3w[/youtube]
THIS CIRCUIT IS EXTREMELY SENSITIVE TO DARKNESS. EXPERIMENT THE CIRCUIT IN A HIGHLY ILLUMINATED ROOM.
LED GLOWS EVEN IN LESS DARKNESS. Use torch light if the LED glows in less darkness. You can adjust the sensitivity of the circuit using a variable resistor in place of R3-300Ohm. Try this circuit with other resistances as well, for example, 1K, 10K and 100K, etc.
In Amarino shield version 3.0, there are headers for 3 different bluetooth adapters. a. General Bluetooth Adapter – Cheapest adapter available at www.buildcircuit.net. RECOMMENDED ! b. BlueSMiRF– Bluetooth Mate Silver– More expensive adapter available on sparkfun.com. c. BlueSMiRF Gold – The most expensive adapter available on sparkfun.com. – Whichever Bluetooth adaptor you are using, the baud rate of Bluetooth adapter should match…
USB powered mini speaker amplifier is conveniently powered by USB and it is simple to set up. USB powered speakers are convenient for listening to your media while at home or on the go. Conventional computer speakers that require an electrical outlet to work can be prohibitive because they force you to be close to…
TSA7500 2x100W + 220W 2.1 channels audio amplifier board comes with AudioB pro Bluetooth module that supports Apt-X. It has a perfect class-D architecture (based on TPA3221) and 2 channels have 100W power outputs and another one channel has 200W power output.
In this tutorial we will learn how to change the color of an RGB LED connected to Arduino, alternating for two seconds the following colors: red, green, blue, and then orange, yellow, indigo and purple. It is similar to the previous fade led effect experiment but it is not limited to only one LED but there…
If you have come to this page from a search engine, please check this article to know about clap switch. Follow the given steps to assemble the DIY clap switch. Step 1:Collect all the required components for assembling the kit. Step 2: Read and confirm the specifications of the components. Step 3: Insert all the resistors in…
In this tutorial, we will use the digitalRead function and learn how to read a digital pin. In our case, the digital sensor that will be read will be a common button/reset tactile switch that when pressed will turn on the LED. Components required: Name Quantity Component U1 1 Arduino Uno R3 D1 1 Green…
This is PAGE 2/2 of the article titled “How to make one transistor FM transmitter on a stripboard”. Go to previous page. Continued…. Now, solder C8 (0.1uF- code 104) capacitor. One terminal of the capacitor is connected to the +ve and the other to the -ve terminal of battery. After connecting C8, it is not…
Description: The following circuit works as a toggle switch. The circuit has two stable states, ON and OFF. Once it is ON, it remains ON till you press the switch again. The project has been derived from buildcircuit.com. You can read the original post from this link: http://www.buildcircuit.com/toggle-switch/
This 16×2 LCD shield for Arduino Nano includes various add-ons, like 5 Tactile Switches, 3 Trimmer Potentiometers, LM35 Temperature sensor and the 16×2 LCD itself. It’s a compact shield designed to fit in small enclosures and it is intended to develop measuring devices like thermometers, voltmeters, timers, up down counters and other various project requiring…
This project shows a combination of analog and digital circuits ready for interactive sound production! The project uses Arduino and NE555.
Link to this gist: https://gist.github.com/buildcircuit/3939423
