I found this small kit on Ebay. The kit is pretty easy to assemble. The following video shows the assembly steps. The kit actually turns on the LED when you press switches, 1, 4, 7, and 9. That’s it.
TSA1020 is a digital stereo Bluetooth/Single-ended audio volume controller board. It has an RCA audio input/output ports and a BVC port (only for some Bluetooth amplifier boards). You can use it to control audio volume any normal amplifier board. The audio out signal will increase/decrease when the user rotates the knob, Bluetooth audio volume control port will also…
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…
Isolated high power Mosfet DC solid state relay shield allows you to control high current DC load in switching or PWM control mode. The project can be used in wide verity of applications like DC DC Converters, inverters, DC motor control, solenoid, LED Dimmer, battery chargers and it can control inductive and resistive loads. On board high…
This project is a sound-activated switch. DESCRIPTION Clap switch/Sound-activated switch designed around op-amp, flip-flop, and popular 555 IC. Switch avoids false triggering by using a 2-clap sound. Clapping sound is received by a microphone, the microphone changes the sound wave to an electrical wave which is further amplified by the op-amp. 555 timer IC acts…
TSA6175 is a Bluetooth 5 multipoint audio receiver. You can have many TSA6175s paired and work together. You can also let it work like a normal Bluetooth audio receiver. 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…
This is the most basic project for Arduino beginners. Almost everyone starts Arduino with this project. The output of this project is a blinking/flashing LED. Insert an LED on your breadboard and connect it to your Arduino using wires as shown on the image. We can also use the inbuilt LED present on the Arduino…
Description: In this project, Arduino first encodes the remote signals and decodes them to control LED brightness. First of all, connect the Infrared sensor as shown in the picture below. Then, press keys 0 through 4; Arduino stores the values for keys 0 through 4 and when the sketch runs, key 0 turns off the…
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…
This is yet another multivibrator kit. A similar kit article has been published recently. You can see it here.
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…
I found this project on Fritzing.org. This is just a simple project for testing a 2 channel relay using an Ethernet shield over an Arduino Mega. In place of LEDs, you can connect 220V AC lamps. If you have not used relay before, check out this article. The Arduino sketch has been compiled and there is…
This experiment makes the use of ‘Android- Arduino BTCOMM Shield’ and Amarino. If you are not familiar with the shield, visit this page. This experiment is similar to my previous tutorial- Sensor graph and LED controller together. You can also see one more similar experiment- Sensor graph and LED controller using Smart Phone- Arduino Shield. If you…
I was testing a couple of low-cost laser diodes that come from china and I was wondering why those diodes don’t have any protection/driver circuitry. Those diodes come with a simple series resistor for current control which is not a good idea nor stable.
This project is an automatic PIR sensor. DESCRIPTION Project is based on HoltekÂ’s IC HT7610A, which is a CMOS LSI chip designed for use in automatic PIR lamp, flash or buzzer control. It can operate in 3-wire configuration for relay applications. Â In our project we have used relay instead of Traic to connect any kind…
The description has been copied from manufacturer’s website. This is a PIC microcontroller-based frequency meter, subtraction frequency is set with crystal measurement functions and programmable, five digital display, easy and intuitive, all using in-line components, the circuit is simple and easy to make. Measurable frequency range: 1 Hz -50 MHz; Most commonly used to measure…
