Description: This tutorial is about mp3 mode of WTV020SD-16P module. With this simple circuit, you can play AD4 format music files. At the end of the article, you can see a video output of this simple and easy project.
In this tutorial, we will build a thermostat to independently activate and deactivate any domestic device depending on the temperature. We will be able to display the temperature and the activation status of the device connected to the relay on the 16×2 LCD display. Moreover, on the sketch we can modify the temperature, detected by…
The pressure sensor amplifier built using LM358 op-amp and MPXM2051GS pressure sensor from NXP semiconductor. The circuit provides 4V output for full scale pressure input 0-7.5PSI. One op-amp is used as amplifier and 2nd op-amp is used as comparator to provide an output at set value that can be used as over pressure switch to control…
The assembly of a line following robot is pretty straight forward. If you follow the silkscreen labels, you will be able to assemble it easily. The line following robot comes with the components as shown on the image. Start with resistors Solder all the resistors that comes with the package. Solder the transistors S8550 Solder…
This is just a simple Arduino project comprising Arduino, LM35, and I2C LCD. It displays the room temperature on the I2C LCD and the serial monitor. The project is suitable for beginners and can be used for school projects. In the past we have done several projects using LCD and LM35, please check the projects…
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.
Remote operated musical bell is one of the interesting experiments every electronics hobbyist would like to make. We have made a very simple remote-operated musical bell DIY kit that requires your half an hour labor to make it work. It uses CD4017 decade counter, UM66 or BT66 musical chip and TSOP4838 infrared sensor as its…
This small constant current LED driver Nano shield has been designed using CAT4104 IC from ON semiconductor. Its 4 channel LED driver. The board has provision to mount 20 SMD 1206 LEDs. The LED can be RED, GREEN, BLUE and WHITE. Reduce the number of LED to 12 if White LEDs are used, as white…
Voice Changer project can be used to transpose or distort one’s voice by encoding the sound appearing at the Microphone input. This project is built around AP8072 IC. SPECIFICATIONS Supply input : 6 VDC @ 200 mA Output : Speaker, 8 Ω / 0.5 W Audio amplifier type LM386 with volume control preset Jumper selectable…
USB Boarduino is very much similar to DC boarduino. A USB boarduino board has a USB socket in place of DC barrel, that’s all. This product is no longer sold by Adafruit, so, we cannot get the description. However, if you want to order or redesign it, here are the files: Original product link Assembly…
This article is about playing music files using WTV020SD-16P and Arduino. This experiment is suitable for amateurs and beginners. WTV020-SD module is a voice rewritable content type of mass storage voice module, pluggable maximum capacity of 1 GB SD card memory. It can load WAV format files and AD4 formats files. WTV020-SD module voice chip…
After the success of BuildCircuit’s first Amarino Shield for Android-Arduino experiments, we are here with Amarino Evaluation Shield. I am grateful to all the customers and readers who purchased our first kit and gave us their wonderful comments. About Amarino Evaluation Shield: Amarino Evaluation Shield is for Amarino toolkit and most of the available Android…
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…
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.
Designed by: Sagar Sapkota (Contact) (IT IS NOT A COMMERCIAL PRODUCT- PLEASE DON’T ASK FOR ITS DESIGN) This is my Master’s degree thesis project. I did this project at the University of Turku, Finland. I completed this project in March 2012. The project was selected for an international conference organized in Japan. Features of the…
This is a 2x8W audio amplifier board with AudioB plus Bluetooth module. It has 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.
Here’s a simple motion sensor. Sketch has been taken from Arduino site. The sensor’s output pin goes to HIGH if motion is present. However, even if motion is present it goes to LOW from time to time, which might give the impression no motion is present. This program deals with this issue by ignoring LOW-phases shorter…
