DOWNLOAD this arduino code OPTIONAL LINK This article is for beginners who want to learn about transmitting data from Android to Arduino and vice versa. In this experiment, you will see numbers increasing on Serial Monitor of Arduino and same numbers will be seen on Android interface also.
This tutorial shows you how to use an LM386 based audio amplifier with WTV020SD-16P module. The WTV020SD-16P music module has been configured in mp3 mode.
We are not this FM transmitter DIY Kit with an enclosure. Here’s one of the easiest, simplest and the most popular FM transmitter for amateurs and electronics beginners. With this DIY kit, you can transmit your voice or audio over an ordinary FM radio within the FM broadcast band. It is a DIY kit designed…
In this tutorial, we will learn to connect and use the RTC (Real Time Clock) module to display date and time on the 16×2 LCD display. DS1307 is called the Maxim-Dallas module for Arduino with which it allows us to have a precise system clock.
In this article, you will know about three easy, useful and absolutely FREE Android applications that facilitate serial communication between Arduino and Android via Bluetooth medium. Before moving on to applications, you can check this article to know about the fundamentals of Android-Arduino communication using Bluetooth. Now, let’s start with the applications first, then we…
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…
Description: The LM386 is an audio amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200.
How many times have we wished to have a robot that goes around the house avoiding obstacles? Creating this project with Arduino Uno, an HC-SR04 module and two wheels will take us to be a child. The robot is able to avoid obstacles, thanks to the ultrasonic range finder sensor that senses obstacle coming on…
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…
TSA1110 is a smartphone Bluetooth audio volume controller. It has integrated a digital potentiometer and a powerful Bluetooth and its control distance is up to 30m (outdoor). After it gets connected to your audio amplifier, you can use an Android or iPhone App to control the audio volume from the smartphone. There are 3 ports for…
Most of the microcontrollers have limited built-in storage. For example, Arduino UNO (Atmega328)has 1Kbytes of EEPROM storage and it might not be enough for all projects. If your project has any graphics, video, audio and data logging feature, you need a removal storage in it.
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.
If you have come to this page from a search engine, please visit this page first, you will eventually come back to this page again. About Cosmarino Cosmarino is a versatile kit that facilitates communication between Android and Arduino in a simple way. We can do several experiments with this kit. In this tutorial we…
This is a simple 4-in-1 do-it-yourself (DIY) kit from BuildCircuit. The kit has four different circuits that can be switched on separately or together at a time using a DIP switch. The four circuits are: 1. Dark sensor using LDR. 2. A latch circuit using NE555 timer. 3. Astable circuit using NE555 timer. 4. A…
This is a MAX7456 OSD ( On Screen Display) shield for Arduino. The user can easily interrupt and overlay text and/or graphics onto a video signal (PAL or NTSC). It’s just about “plug-and-play” with an Arduino board. Plug this shield over Arduino main board and upload the given test sketch. Plug in your video signal to…
A voltage divider network is a fundamental electronic circuit used to divide a voltage into smaller fractions. It consists of two or more resistors connected in series or in a string, which create intermediate voltage points between the supply voltage and ground. Voltage dividers are commonly used for various purposes in electronics, including setting reference…
CTR-30 flash Christmas tree kit consists of three circuit boards, allows 36 LED flash alternately, showing a Christmas tree in the space of a three-dimensional profile. It appears excellent at night.
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…
This small module helps you measure moisture of soil. It is a low cost sensor that you can purchase from Ebay. To modify the sensitivity of the soil moisture sensor, just rotate the potentiometer on the module.
If you have come to this page directly from a search engine, visit this page first to know about this DIY digital clock kit. This assembly tutorial explains how to assemble the DIY digital clock kit. You will get the following components in the kit package: You will need basic soldering skills to assemble the…
