Convert USB port to RS232 port

rs232 port

This project lets you conveniently connect any computer with USB ports directly to a simple, traditional connector  the 9-pin RS-232,It converts the electrical signals from a USB<–>serial TLL convertor to the RS-232 standard. So in a nutshell,it converts a USB port into a standard but basic … [Read more...]

DIY thermometer schematic/circuit

DIY thermometer circuit-schematic

It’s usually is a good idea to check the temperature before setting off for an outdoor activity. Equally important is a temperature check while at the actual place. The former is easy to do using the local TV or the Internet but once you are in the bush or the countryside such a task becomes more … [Read more...]

A ‘Retro’ Mobile -Give an old phone a second life

A ‘Retro’ Mobile -Give an old phone a second life

Old-fashioned bakelite telephones are becoming increasingly rare in living rooms, but they’re still common enough at rummage sales. We like convenience in our lives and our tools, and a phone that isn’t attached to the wall by a cord is simply more convenient. So it’s ‘out with the old, in … [Read more...]

Low Cost Capacitance Meter Circuit/Schematic

LOW-COST CAPACITANCE METER

" A simple starter project that will let you get the measure of most capacitor. " A typical multimeter can measure voltage, current and resistance over a wide range of values, and usually has a few “tricks up its sleeve” such as continuity tester and transistor checker facilities. Some … [Read more...]

PARKING WARNING SYSTEM

PARKING WARNING SYSTEM

                                   " How to avoid having an unwanted rear entrance to your garage! "This is a device to aid you in parkiar in a garage by providing a visual and audible warning. It is easily set up by mounting it onto the wall at the end of the … [Read more...]

Make a Electronic Harrypotter wizard

Make a Electronic Harrypotter wizard

                                     " make your own harry potter style magic wand "Harry Potter had just entered a cold, dank chamber in the tombs of Hogwarts. His scar started to hurt and he had a feeling of impending doom.The chamber was ill lit, but he barely … [Read more...]

Long range wireless switching

Long range wireless switching

                           "  Control your home from any part of the world "Do you want to control your TV or any other home appliances from any part of the world by just one click?Do you often forget to switch on or switch off devices while you leave your house?Are you … [Read more...]

Reliable Digital Thermometer

Reliable Digital Thermometer

Digital Thermometer generally used in wide variety of scientific and engineering applications, especially measurement systems.here we present a highly reliable digital thermometer which can be used in aquarium and measuring temperatures around +85°C.This project was born from the need to easily … [Read more...]

Digital Photo Frame

Digital Photo Frame

                               " Turn A Broken Laptop Into A Digital Photo frame "As a techie, I have accumulated a lot of hardware over the years and it pains me when I have to get rid of things that are old but still potentially useful. Such was the case with a … [Read more...]

Remote-Controlled Mains Switch

Remote-Controlled Mains Switch

Want to switch mains appliances on and off remotely? This UHF Remote Mains Switch can do it for you. It’s operated using a handheld UHF transmitter, and an in-built timer also enables the unit to turn off automatically after a preset period. There are many instances when it would be convenient to … [Read more...]