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…
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…
TSA1200 has a dedicated remote control, but if the remote control is broken or you want to use your own remote control, this tutorial will teach you how to pair. Note: The remote control used must meet the carrier frequency of 38KHz and support the NEC standard. Hardware and Software required: audio amplifier board connection cable…
High Current PWM Halogen Dimmer controller project is designed around SG3525 IC and High current MOSFET. Project can handle lamp up to 5 Amps (10Amps Possible with big heat sink) and supply 12-24V DC .Ideal for Halogen Dichroic Lamp or Halogen Lamp. SPECIFICATIONS Supply input 15 to 24 VDC Load-Lamp 12 to 24 VDC @…
TSA9840 2x20W audio amplifier board comes with Audio B plus Bluetooth module. It has a perfect class-D architecture (based on MAX98400A) and each channel has 20W power output. Both channels are capable of giving nominal power output simultaneously and continuously.
Remote operated musical bell can be made combining the following circuits.
a) Remote tester
b) Basic RC circuit
c) Simple Musical bell
When a remote is pressed, the circuit plays a music.
a) Remote tester
We are now selling the BLUE COLORED DIY Arduino kit This post shows you how to assemble the DIY Arduino board. The assembly process is straight forward. It can be easily assembled if you follow the silkscreen indicators(labels) and have beginning experience with a soldering iron. You will need to read the resistor bands or use…
Remote tester circuit also resembles the logic of a “dark sensor (using BC557)”. LDR has been replaced with IR sensor TSOP 1738. The circuit works as a remote tester. Pressing a remote control switch near the IR sensor, switches on the LED D2.
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.
In this tutorial, we will see how to use Arduino with a stepper motor and a joystick. To control the stepper motor we will use the driver control board that can drive up to about 750mA per port, so it is perfect to be used with this motor.
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 yet another ultrasonic range finder project using Arduino. We have done several similar projects in the past. It allows us to control a buzzer based on the distance detected by an HC-SR04 sensor, making it sound with a frequency proportional to the distance from an obstacle.
Optically isolator Arduino Shield has been designed to provide optically isolated I2C communication between Arduino and any other device or sensors that works with I2C protocols. I have used the ISO1540 Low-Power Bidirectional I2C Isolator IC from Texas Instruments to build this project, and the device is compatible with I2C interfaces.
This Mini Audio Power Amplifier is capable of delivering 1W of continuous RMS Output Power into 8 ohms load @ 5V. The Amplifier is built using TS4871 IC from ST. This Audio Amplifier is exhibiting 0.1% distortion level (THD) from a 5V supply for a Pout = 250mW RMS. An external standby mode control reduces the supply…
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 phone or mp3 player to your home audio system. It comes with an AudioB plus Bluetooth module. Note：TSA6012 can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority….
We are now selling BLUE colored DIY Arduino kit. You know that there are several versions of Arduino hardware. Hobbyists have also made Arduinos on strip boards giving different looks. Here’s one more Arduino, that is a simple do-it-yourself (DIY) kit. It is just like any other Arduino UNO board. However, it does not…
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 audio amplifier project. It is based on TDA2282 chip. The TDA2822M is a monolithic integrated circuit in 8 lead Minidip package. It is intended for use as dual audio power amplifier in portable cassette players and radios. Datasheet of TDA2282 You can see all the assembly images below. You can see…
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…
