This video shows all the steps to build the HEE-HAW Siren Project from Jaycar. The kit is based on NE555 IC. The timer NE555 IC is configured in astable mode. You will hear a hee-haw siren similar to an ambulance and you will see the two green and red flashing LEDs. The kit is very…
NOTE: A similar kit is available at buildcircuit store. Please check the store. An infrared based music transmitter and receiver is made up of three different modules. Test these three modules before you make this project. An audio amplifier Dark sensor using 741 Melody generator using UM66 You can make this project using phototransistor as…
We can use the logic of making an automatic light detector to make a simple water level indicator.We just need to remove LDR from the circuit and put the wires into water, then it simply works as water level indicator. There is a specific resistance between the wires that are dipped into water and conduction of electricity through water gives biasing voltage to base of transistor.
The sensitivity can be adjusted using VR1. Put 470K variable resistance in VR1.
This small board is based on the CS5171 boost converter from ON Semiconductor. The board is configured to be used with a single 18650 LiPo battery. The circuit converts single-cell 3.7V LiPo battery voltage to 5V with a load current up to 400mA. Board has been designed to fit on the backside of a single-cell battery holder…
You can use this kit for displaying serial messages from Arduino. The kit is itself a programmable Arduino board that comes with ATmega328p. You just need to upload a serial LCD firmware to the ATmega328p chip of the kit and your kit is ready to display serial messages from Arduino. Read everything about the kit…
This is a 2x8W audio amplifier board with AudioB plus Bluetooth module. 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.
TSA7510B is a 2x100W audio amplifier board with a new AudioB plus Bluetooth module that supports Apt-X. It has perfect class-D architecture(Based on TPA3221) and each channel has 100W power output. Both of channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC12V-30V power supply. It can be used to drive…
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…
This article is about converting mp3 and wave files to AD4 format. This tutorial is suitable for amateurs and beginners. WTV020-SD module is a voice rewritable content type of mass storage voice module, pluggable maximum capacity of 2 GB SD card memory. It can load WAV format files and AD4 formats files. WTV020-SD module  voice…
Two digits – Digital object counter DIY kit is one of the most popular kits designed by BuildCircuit. The kit is very popular among electronics beginners and intermediate circuit players.
This is a simple serial lcd do-it-yourself (DIY) kit based on Arduino. I derived this kit from the open source eagle file available on sparkfun.com. Â The only difference is that I used low cost components to make it more affordable. It uses the libraries and examples published on the quickstart page of sparkfun.
If you have come to this page from a search engine, please read this page first, you will eventually come back to this page again. The first page gives you the idea of Amarino Nano 1.0 and its features. Steps for experiments:Â Before you start the experiment, stack the Arduino Nano and Bluetooth modules on…
This is yet another post related to LM317. The LM317 device 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 requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and…
This is a simple wrist watch DIY kit for electronics hobbyists. Anyone with basic soldering experience can build the kit. This is a copy of Solder:Time watch kit from https://www.spikenzielabs.co. It uses DS1302 clock chip.
This is a TSTR04 USB relay board which has an OLED display and 4 temperature sensor ports. In “Normal” mode, you can easily control this relay board by your computer or smartphone via Bluetooth. In “Auto” mode, you can set a threshold value, to let the relay turn ON/OFF based on the temperature. So, you can use it…
