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You may already have on hand a 12V AC/DC adaptor or 12V from your PC or 12V battery, but you need a 9V, 2.5A DC power supply for your embedded system. Certainly, you will need a DC-to-DC converter for...
Sometimes a simple analogue power supply with adjustable output voltage and adjustable current-limiting function is needed. This article presents a simple power supply using an adjustable regulator LM350 that provides variable output up to 17V and maximum output current...
This project is based on Arduino Uno and Processing software for monitoring temperature and sending voice alerts. Processing is an open source IDE that can be used to visualise data and implement other functionalities. Circuit and working The circuit is built...
Presented here is an electronic toy circuit for your child’s entertainment. The concept of a joint family is disappearing, and childcare is also becoming difficult. It is best to spend some quality time with your child by doing things...
In most electronic systems, it is necessary to provide information in the visual form for a convenient user interface. The most commonly used displays in electronic systems are LED, LCD and TFT. Amongst these, an LCD display is the...
Most power-resumption alarm devices produce non-stop alarm when power resumes. To overcome this problem, here is an automatic Power-Resumption alarm circuit that sounds an alarm for a few seconds only after power resumes. Author’s prototype is shown in Fig. 1. Circuit...
Arduino board can also be used to control electrical devices and appliances over the Internet. Just by clicking a few buttons on a webpage, the devices can be operated from a remote location. For this, the board needs to...
Morse code is a method of transmitting textual information as a series of on-off tones, lights or clicks that can be directly understood by a trained listener without using any special equipment. The International Morse Code encodes alphabets, numerals...
A simple explanation for the working of an ideal diode circuit based on P-channel MOSFET and PNP transistor is presented here. The typical voltage required to turn on a diode is forward voltage. An ideal diode should have zero...
Presented here is an Arduino-based dish antenna controller to align the position of a satellite dish antenna by setting azimuth and elevation angles. The dish antenna should always point to a specific satellite in space to receive maximum signal....