Arduino Project 28-Chirstmas Light using 6 LEDs
In this tutorial, we will turn on and off the LEDs sequentially, such as Christmas tree lights.
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Build a simple DIY clap switch
Description: Here’s a simple DIY clap switch circuit. The circuit is mainly composed of an audio frequency and a bistable trigger circuit. Q1 and Q2 together form an amplifier circuit. MK1 (electret microphone) accepts Clap/Audio signal and that enters to transistor Q1 through the coupling capacitor C1 and enters to Q2 base through collector directly after getting…
4 CHANNEL INFRARED REMOTE RELAYS
4 Channel Infrared (IR) Remote controller is using HT12A and HT12D encoder/decoder chips from Holtek. FEATURES Supply – Transmitter : 3 to 5 VDC, 5 V @ 20 mA & Receiver : 5 VDC @ 200 mA Output: 4 channel Latch or Momentary onboard Jumper for selection Crystal based oscillator for the reliability of operation…
WTV020SD-16P evaluation board- DIY kit
This product is outdated. We are now selling DFplayer mini that easily plays mp3 files. It is far better than WTV020SD-16P module. BuildCircuit has previously published several articles about WTV020SD-16P, the best and the cheapest music module ever made for electronic enthusiasts. If you have never worked with wtv020sd-16p module, we recommend you to check...
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2 CHANNEL HIGH CURRENT ARDUINO RELAY SHIELD
2 Channel Relay Shield for Arduino UNO is a simple and convenient way to interface 2 relays for switching applications in your project. The board has been designed using large current relay that can handle a load up to 30Amps. Relay circuit is optically isolated to prevent any kind of EMI noise. The board directly…
AUDIO VU/SOUND LEVEL METER WITH LM339
This is an “Audio VU Meter” or “Sound Level Meter”, it is a general-purpose bar-graph Audio VU meter designed for fun projects. All you need is to hook up one wire to the output of the audio amplifier’s speaker pin along with GND and see the magic. The response of the circuit is very fast…
Turn on an AC lamp using Arduino, 5V relay and motion sensor
This is a simple motion sensor project using Arduino. A 220V AC lamp is connected to a 5V relay and the relay is activated once the motion sensor senses motion and sends a signal to the Arduino. List of materials Arduino Uno ( Rev 3 ) Sensor ( PIR ) HC-SR501 Keyes SRD-05VDC-SL-C Relay Module or any 5V relay module…
2 x 8 Watt Class D Bluetooth Audio Amplifier Board – TSA3110B(Apt-X)
This is a 2x8W audio amplifier board with a new AudioB plus Bluetooth module that supports Apt-X. 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.
DIY KIT 14- Jaycar’s ‘Jiminy The Cricket’ project
This post shows how to build Jaycar’s JIMINI THE CRICKET DIY KIT- PROJECT SC2 #14. It takes around half an hour to build this kit. It is basically a sound sensor. When there is a noise/sound close to the electret microphone, the circuit turns on the two LEDs and produces a chirping sound.
Making Yoghurt with a Portlet
An Arduino based programmable outlet with screen and thermocouple inputs for implementing a wide range of awesome projects ! About PortletMake Yoghurt using PortletSupport this projectVideoImages KICKSTARTER PAGE: http://kck.st/1xuz7Ev A portlet is an Arduino based programmable outlet with screen and thermocouple inputs for implementing a wide range of awesome projects ! The Portlet project began...
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TSA8635 – Bluetooth Audio Receiver + Enclosure
TSA8635 is a compact size and easy to use Bluetooth audio receiver. This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can also stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system. Note: We can provide OEM/ODM service for…
TOSR02 – 2 Channel USB/Wireless Relay Module
This USB/Wireless relay module allows computer to control switching of external devices by using the USB port of your computer. It has a wireless extension port, that can work with XBEE or Bluetooth Bee or Wifly modules, which means now you can control your device by Zigbee or Bluetooth or Wi-Fi. The TOSR0x module can be powered by USB…
TSRW430- 4 Channel Wi-Fi Smartphone Controlled 30A Relay Board with Enclosure
The TSRW430 provides a four volt free contact relay outputs with a current rating of up to 30Amp each. The module is powered from a 12VDC supply. The DC input jack is 2.1mm with positive core polarity, DC supplies are required to supply at least 1A at 12VDC. The relays are SPST-NO types. It’s a Wi-Fi…
Audio amplifier using LM386
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.
2 x 20W Class D Bluetooth Audio Amplifier Board – TSA9840B (TWS/Apt-X)
TSA9840B is a 2x20W audio amplifier board with a new AudioB plus Bluetooth module that supports Apt-X. It has perfect class-D architecture (based on MAX98400A) and each channel has 20W power output. Both channels are capable of outputting nominal power simultaneously and continuously.
2 x 8 Watt Class D Bluetooth Audio Amplifier Board – TSA3110A
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.
2 x 100W + 200W 3 Channels Audio Amplifier Board – TSA7600
This amplifier does not have Bluetooth. This is TSA7600 2x100W + 220W audio amplifier board. It has perfect class-D architecture (based on TPA3221) and 2 channels have 100W power output and another one channel has 200W power output. All the channels are capable of outputting nominal power simultaneously and continuously. This board can be powered…
8 CHANNEL OPTICALLY ISOLATED I/O SHIELD FOR ARDUINO NANO
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…
How to use an electret microphone
An electret is a permanently charged dielectric. It is made by heating a ceramic material, placing it in a magnetic field then allowing it to cool while still in the magnetic field. It is the electrostatic equivalent of a permanent magnet. In the electret microphone a slice of this material is used as a part…
