Engineers Garage

According to the Three R’s slogan “Reuse, Reduce, Recycle”, we must get aware to save our planet from e-waste. Sometimes we have dead mobile phone but its battery is in good working condition. The circuit given here is used to utilise the battery for mini candle light using High bright LEDs. The main part of the circuit is IC MC34063A. It is a monolithic controller which consists of an internal temperature compensated voltage reference, a comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This IC was specifically designed to be incorporated in step−down and step−up and voltage inverting applications with a minimum number of external components.

We have already learned about working with, types of, and applications of inductors. In the previous article, we have previously discussed selecting an inductor for a given circuit or application. For picking up the right inductor, it is important to know about reading inductor packages. There are many types of inductors that come in a…

The circuit presented here operates a relay for Fixed Timer Interval. So the device or machine connected with relay operates for same time. The device once switched ON, automatically switches OFF after Fixed (set) Time Interval when relay switches OFF. The Time Interval can be varied and it is displayed on 7 Segment Display. This kind of circuits can be used in many applications where it is required to operate any device or machine for Fixed Time Interval. Like·         The Alarm Signal (or Bell) once triggered, remains ON for Fixed Time Interval and then shuts off automatically·         In Manufacturing Industries the Motors have to be rotated for Fixed Time Interval once start button is pressed. It stops automatically when time period is overTime operated relay circuit is build using IC555. To display the time period in seconds 2-digit decade counter is build using CD4026 chip. Another IC555 is used to provide 1 Hz pulse to update time period after every 1 sec.

We will make a straightforward web application with a frame that permit a client to send a message to the Raspberry Pi utilizing Flask in a web browser. This will permit us to control the Raspberry Pi from a PC, tablet or smart phone. At the point when the form is submitted, it will send the message to the LCD by means of the Raspberry Pi’s GPIO ports. All the code, including the web application, is in Python and HTML.

The LoRa Alliance, the global association of companies backing the open LoRaWAN standard for the Internet of Things (IoT) low-power wide-area networks (LPWANs), announced that LoRa Alliance Authorized Test House TÜV Rheinland has opened a LoRaWAN Certification testing site in India, and that DEKRA will also offer local certification testing by the end of the year.…

Vehicle is part of our busy life but if we are in office or in house then we need to park vehicle outside or in parking lot. There is prone to theft or hit by other vehicle. The situation of vehicle can’t be track without visiting parking place. So this project is built to track status of vehicle, when somebody try to steal the vehicle or get hit by any others vehicle.

The project built on two boards one is for transmission which named as PARKING VEHICLE MONITOR-TX and other is for receiving which named as PARKING VEHICLE MONITOR-RX. The TX board is used to transmit the status of vehicle and other RX board is used to receive the status of vehicle and display the status on 16×2 LCD display.