4 Digit Multiplexed display shield for Arduino Nano with onboard 2 tactile switches and LM35 temperature sensor. This shield helps you to develop many projects that require 4 digit display. For example, a thermometer can be made using on board LM35 sensor. 7 Seven segment multiplexed display is a tiny board and has been designed…
Here’s a simple latch-up circuit using 555 timer and opto-coupler MCT2E. You can also use PC817 in place of MCT2E. The NE555 timer is configured in astable mode.The components are selected in such a way that the frequency output of the astable circuit lies within the audio range. Opto-coupler, MCT2E is is used for latching…
In this article, we are going to describe how you can use the “fully assembled clap_switch” to light up 100-240V appliances. When we say 100-240V appliance used with a clap switch, it is usually a bulb/lamp/CFL(Compact Fluorescent Lamp) tube. This article is for absolute beginners, so, we will try to explain all the small details.
This sound sensor with Relay driver shield for Arduino Nano can be used to develop sound-activated ON/OFF switch or other projects that require sound senor. LM358 op-amp is used as the amplifier, 1st op-amp amplifies the microphone signal, and 2nd op-amp works as a half-bridge rectifier that converts AC signal into a DC voltage. This DC voltage is connected…
This post gives you the idea for assembling the Amarino shield. To get full details about this shield, CLICK HERE. When you buy the kit package, you will get the following PCB. The PCB clearly shows the pin and component names, so, it should help you to get idea of connections of components to Arduino. For…
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…
We are now selling fully assembled CLAP SWITCH(shipped from Sydney, Australia). Click here to visit the product page. If you have come to this page from a search engine, we recommend you to visit the page about DIY clap switch. In this article, we are going to describe how you can use the “do-it-yourself(DIY) clap…
A dark sensor can be converted to a simple FM transmitter using the following components. This FM transmitter is very sensitive and it has transmitting range of 30 meters.
This project is an automatic PIR sensor. DESCRIPTION Project is based on Holteks 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. In our project we have used relay instead of Traic to connect any kind…
This is yet another dark/light sensor project that uses a photoresistor. This kit has an LM393 chip and there is a relay also. It is a light operated switch. 【Great School Science Project】: The light operated switch can be a great school project for children. It is widely used to help students learn basic mechanical…
Description: Astable mode of 555 timer is used to generate pulses at regular interval. READ ABOUT ASTABLE MODE. The following schematic has been taken from buildcircuit.com. The following circuit can work as a music generator, Infrared transmitter and LED blinker depending upon the values of R1, R2 and C1.
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.
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…
DC Output Solid State Relay 10Amps 60V DC (Optically Isolated Input) This project has been designed around TLP250/352 which is Opto-Coupler IGBT/MOSFET Gate Driver from Toshiba and Mosfet IRFP260 from IR, This relay consists of optically isolated gate driver and low impedance Mosfet. The combination of low resistance and high load current handling capabilities make this Relay suitable for…
This shield enables you to interface many different devices to Arduino Nano using optically isolated inputs/outputs. The circuit consists of 4 Input channels and 4 Output channels and all 8 I/O lines are optically isolated. This project can help in various industrial applications where EMI noise and high voltage lines can damage the Arduino Nano or other circuits connected…
This is yet another metal detector kit for electronics beginners. After assembling the kit, if you take the kit close to a metal, the buzzer will turn on and the LED will flash. The sensitivity of the kit can be adjusted using the potentiometer. Parameters: NO. Parameters Value 1 Name Metal detector 2 Operating voltage…
Here’s a simple light activated police siren using light dependent resistor and NE555 timer. Before you make this project, I would recommend you to make the following projects. a. Light sensor and dark sensor I strongly recommend you to make a dark sensor and light sensor using LDR and understand clearly how it works. b….
