BuildCircuit.COM – Page 19 – Basic Electronics, Arduino, Amplifiers and Scoreboards

Assembly Tutorial- 3 Digits – Digital object counter DIY kit

BuildCircuit2 years ago2 years ago05 mins

We are now selling CD4026 and CD4029 up and down counter modules. This page shows you how to assemble three digit digital object counter. If you are looking for 2 digit digital object counter please see this page. If you are interested in knowing about this 3 digit counter, please check this page. The counter...

TSIR04B – 4 Channel Outputs- 4 optically Isolated Inputs Bluetooth Smartphone Relay

BuildCircuit13 years ago2 years ago04 mins

TSIR04B is similar to TSIR04. In this device, we have removed the OLED display and put the relay board in a plastic enclosure. This is a TSIR04B Bluetooth version relay board with optically isolated inputs and temperature sensor port. You can easily control this relay board by your computer or smartphone using Bluetooth. The communication way…

Mode of NE555- Astable

BuildCircuit16 years ago6 years ago11 mins

This circuit has been configured in Astable mode. The output pulses are determined by the values of resistors R1, R2 and the timing capacitor C1. The formula for the frequency of pulses is: f= 1.44/[(R1+2R2)*C1].

DIY KIT 1- NE555+74HC595 based 16 LEDs Light Water Flowing Effect Kit

BuildCircuit7 years ago6 years ago01 mins

This is an LED flasher kit based on NE555 and 74HC595. The LEDs on this kit scroll and give a water flowing effect. The bistable circuit formed by NE555 and 74HC595 generates an oscillating pulse and adjusting the value of RP changes the oscillating frequency so that the flowing speed of the LEDs can be…

1.6W MONO AUDIO AMPLIFIER

BuildCircuit6 years ago6 years ago01 mins

1.6W Mono Audio Amplifier Project is based on TDA7231, which is class AB power amplifier with a wide range of supply. FEATURES Power supply: 5 To 12 VDC Output: 1.6 W, 4 Ω / 1 W, 8 Ω Low crossover distortion, soft clipping PR1 Preset for Volume Adjust Terminal pins for connecting power supply, input…

How to use WTV020SD music module with Arduino

BuildCircuit12 years ago2 years ago52 mins

WTV020SD-16P music module is one of the hot topics in current days. WTV020-SD module can be used in automotive electronics (anti-theft alarm, parking sensor, GPS navigation systems, electronic dog, central locking), smart home system, home burglar alarm, medical instruments, the human voice prompts, music player, home appliances (cooker , rice cookers, microwave ovens), entertainment devices…

CD4029 up and down counter module for Arduino

scoreduino6 years ago2 years ago01 mins

This is a basic up and down counter module for Arduino enthusiasts CD4029 is a presettable binary/decade up and down counter chip. Scoreduino app has a feature to control the CD4029 based up and down counter module. You can connect the CD4029 counter module to Arduino and send up and down signals via Bluetooth. It…

Experiments with Amarino Evaluation Shield

BuildCircuit14 years ago10 years ago01 mins

Before you read this post, please read the following posts: a. Introduction to Amarino evaluation shield. b. Amarino evaluation shield assembly tutorial. You can do several experiments with Amarino evaluation shield, for example, control RGB LED, visualize sensor graph on Android phone, display SMS on LCD, etc. Before we start the experiments, let’s check the…

8 CHANNEL OPTICALLY ISOLATED I/O SHIELD FOR ARDUINO NANO

BuildCircuit6 years ago6 years ago01 mins

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…

TSA6012 – Bluetooth Audio Receiver Board

BuildCircuit13 years ago2 years ago01 mins

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….

DIY KIT 37- TDL-555 Touch Delay Switch LED Light DIY Kit

BuildCircuit7 years ago6 years ago01 mins

This is a DIY touch delay LED kit parts. When the user touches the kit, all the LEDs turn on. It is a very basic learning kit for beginners and learners.

DC Boarduino- A DIY Arduino

BuildCircuit11 years ago6 years ago03 mins

If you’ve ever struggled to use a solderless breadboard with an Arduino, you understand how frustrating it can be! This DC boarduino clone acts just like an Arduino, and works with the latest Arduino software. For many projects it can even be preferable! The kit includes all parts necessary, the assembly is straightforward and well…

Arduino Project 14-Arduino Rain Sensor

BuildCircuit7 years ago6 years ago01 mins

In this tutorial will use a rain sensor and we will turn on an LED if it is raining. In this case we used an LED but a buzzer can be also be used (see previous tutorials). This sketch will allow us to send a number on the serial port which is the value of…

Enable Bluetooth Audio Amplifier Pin Code (Password)

BuildCircuit8 years ago6 years ago06 mins

Enable/Change The BT Pair number All of our Bluetooth audio amplifier boards and Bluetooth audio receiver boards use AudioB plus module as the core bluetooth receiver module. The default bluetooth name is “BT SPEAKER”. Maybe you want change it to a special name or add a password to this module. We just updated the AudioB plus design…

MAGNETIC FIELD SENSOR USING AD22151

BuildCircuit6 years ago6 years ago01 mins

Magnetic field sensor project using AD22151 IC from Analog Devices, The AD22151 is linear magnetic field transducer. The sensor output is a voltage proportional to a magnetic field applied perpendicularly to the package top surface. The sensor combines integrated bulk Hall cell technology and instrument technology to minimize temperature related drifts associated with silicon Hall…

DIY KIT 19- Remote Operated Musical Bell DIY Kit

BuildCircuit2 years ago2 years ago01 mins

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…

2 x 20W Bluetooth 5.0 Networking Audio Amplifier Board – TSA1740

BuildCircuit12 years ago2 years ago01 mins

TSA1740 is a 2x20W Bluetooth 5.0 audio amplifier board. It has a digital amplifier chip YDA174 on the board. It is a 20W×2CH high performance digital audio power amplifier IC with two DSPs. This board can be powered by any DC 10V-18V power supply. It can be used to drive any 4Ω or 8Ω passive speakers.

DIY KIT 22- Rain drop sounder circuit using NE555

BuildCircuit7 years ago6 years ago01 mins

This is yet again a very simple astable multivibrator circuit using NE555. The circuit produces a sound that somewhat sounds like a raindrop. This is a very basic electronic kit project for electronics beginners and hobbyists. Anyone with basic electronics and soldering skills can build this easily.

RS485 Shield For Arduino Nano

BuildCircuit6 years ago6 years ago01 mins

Arduino Nano RS485 shield will help you to transmit and receive serial data using the twisted pair RS485 network. The module provides half-duplex communication. LED D1 indicates receive data, D2 Transmit LED, J1 jumper is optional and not in use in this application. DI/RE connected to D2 of Arduino digital pin which enables Receiver Output…

Make a seven segment display using 5mm LEDs

BuildCircuit6 years ago1 year ago04 mins

In this post, I am going to explain how I built a basic 3" seven segment display made using 5mm LEDs. This project was made during the research and development phase of Scoreduino project. This is a COMMON CATHODE seven-segment display made with 29 pieces of 5mm LEDs. There is also a driver for this...