TDA2030A is widely used as a Hi-Fi audio amplifier in computer speakers. It has the current limiter as well as thermal shutdown functions. Specifications: Output Power: Maximum 18W Supply Voltage: DC 9V-24V (recommended DC 12V, this voltage to the heat sink requirements are very low. The maximum supply of this board is actually up to…
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 one of the most interesting experiments that uses Amarino shield and Amarino toolkit application. If you have never heard of Amarino toolkit and the shield, we recommend you to go the following pages: About Amarino toolkit About Amarino shield This experiment with Amarino shield is similar to our previous tutorials on Sensor Graph-…
The LM317 is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Furthermore, both line and load regulation are better than standard fixed regulators.
This Bluetooth music receiver connects to the RCA 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.
Strobe provides regular flashes of light. Usually Strobes are designed using Xenon Tubes. Here is LED based simple solution that can be used as strobe for entertainment and events and also as warning signals. Project is based on PIC16F1825 micro-controller with two digit frequency display. Project provides TTL output signal, frequency 1Hz-25Hz, Tact switches provided…
Check out similar robotics chassis at Buildcircuit store Sparkfun.com has recently released a simple, easy and useful robot platform for robotics amateurs. It is called “Magician Chassis”. You can use the chassis for different kinds of robots, for example, line sensing, obstacle detecting and smart phone controlled robots. I have recently published an easy project…
Magnetic field sensor project using AD22151 IC from Analog Devices, The AD22151 is linear magnetic field transducer. The sensor output is a voltage proportional to a magnetic field applied perpendicularly to the package top surface. The sensor combines integrated bulk Hall cell technology and instrument technology to minimize temperature related drifts associated with silicon Hall…
A relay is an electrically operated switch. Current flowing through the coil of the relay creates a magnetic field which attracts a lever and changes the switch contacts. The coil current can be on or off so relays have two switch positions and they are double throw (changeover) switches. The relay’s switch connections are usually labeled COM(POLE), NC…
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.
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This is a compact size Bluetooth 5.0 audio transmitter. Maybe your music player (TV, Computer, DVD, Radio etc.) does not have Bluetooth function and you don’t want to use a cable to connect with our amplifier board. You can use this little thing to let your audio player connect with your Bluetooth amplifier board wirelessly.
Please visit this page first to know about Amarino Nano. Assembly process of this kit is very easy. If you have basic soldering knowledge, you can assemble the board within half an hour. You can directly visit BuildCircuit’s Flickr page and see all the assembly steps. If you look at the PCB, you will see that…
This is a simple multivibrator kit using two transistors(S9014), two capacitors, and a few other components. The working principle of a multivibrator has been explained in previous posts also. You can read about the multivibrator circuit on this page. The two LEDs on the PCB flash alternately, that’s all you see on the circuit board….
TSIR04 is a USB relay with optically isolated inputs and OLED display and temperature sensor port. It allows computer control switching of external devices by using the USB port of your computer. The communication medium also can be changed easily. Replace the USBBee module with a WiFiBee, it becomes a WIFI relay. It will be a Bluetooth relay when…
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…
Description: An RC circuit is used to introduce time delay in circuits. A combination of resistor and capacitor gives a time constant. The following circuit shows a basic RC circuit. In the figure C1(100uF) works as a storage capacitor. When you press the switch, the capacitor charges quickly and provides base current to the transistor…
In this tutorial, we will learn to make a countdown seven segment display project that counts in a sequence from number 9 to 0. To start counting, you need to press the tactile switch. At the end of counting, it flashes the LED and rings the buzzer for a few seconds.
This is the second time I am writing an article on how to use the fully assembled clap switch that I designed in 2014. This time, I have put several images and written explanation on each of the images so that you can use it easily. At the end of the photo gallery, you can…
