Power Bank Based Linear Regulated DC Power Supply

Power Bank Based Linear Regulated DC Power Supply

This circuit uses power bank and DC-DC booster module not only for charging mobile devices but also to provide 1.2V to 37V DC power supply. The compact circuit can even be...
Simple Sensitive Remote Control Tester Circuit

Simple Sensitive Remote Control Tester

This handy remote control tester circuit for testing infrared-based remote control transmitters used for TVs and VCRs etc. The circuit is built around 7805 IC, IR sensor module and other easily available...

PORTABLE SIGNAL WAND

Flashing lights have varied applications. For example, travelers can use these as warning beacons on highways to catch the attention of the public in case of an emergency. Described here is...
Proposed assembly of robot

Playing with Robotic Eye (IR Sensors)

There are various applications of IR sensors such as TV remote controllers, burglar alarms and object counters. Here we have used IR sensors (infrared LEDs) to make an object-detection circuit and...
electrolysis free water level alarm

Electrolysis-Free Water Level Alarm

In most water level monitors and alarms, corrosion of the probes makes the systems unusable in a few months. This water level alarm uses a phase-locked loop (PLL) circuit to generate...
shock proof remote switch

Shock-Proof Remote Switch

Using this shock proof remote switch circuit, you can control any AC/DC appliance remotely through inexpensive, low-voltage cabling and a standard push switch. The circuit can easily support cable length up...

Automatic Infrared Faucet Controller

Described here is an easy-to-use circuit of an automatic infrared (IR) faucet controller suitable for hand hygiene and water conservation at homes, hospitals and offices. With this compact controller you can...

Smoke Extractor

Here is a low-cost circuit that automatically extracts solder fumes while you assemble a circuit, thereby saving you from inhaling the same. The solder paste gives off toxic fumes, which could...

Tricolour LED Nameplate With Arduino

Nameplates are generally made of wood, acrylic sheet, or a metal and fixed on a wall or kept on desk. The author’s prototype of an acrylic nameplate that can display the...

Automatic Water Dispenser

A branded automatic water dispenser is usually expensive. So, a relatively low-cost do-it-yourself solution is presented here. It is a portable general-purpose automatic water dispenser perfectly suitable for homes to wash...
 
 

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