Its principle is very simple. You hide it somewhere in the living room and every time someone hits a button on any IR remote control, it will play the Nokia Tune. You might expect two possible reactions: They will look where they left their mobile or ask who’s mobile is ringing.They get annoyed once they [...]
There are many DIY versions of WWVB clock designs available on the web. Commercial “atomic” clocks are inexpensive and widely available, but Bruce wanted to try he hand at designing one to gain insight into WWVB reception and to learn a little about programming a PIC microcontroller.
Source: Bruce Craig
The following construction of low-frequency harmonic signal generator was necessary for debugging and measurement of audio amplifiers and other circuits, working in the audio band. The circuit is used in conjunction with low frequency (million) a voltmeter,oscilloscope or meter bias and provides an invaluable tool for checking and debugging all levels of the amplifier chain.
Source: [...]
The following construction allows a simple cable tester to determine whether the cable network is present in high-frequency signal from the source. It is a contactless version of the tester to detect the presence of a signal at distances up to 2m. It can be used to control all types of signal cables, such as [...]
Microchip Technology Inc., a leading provider of microcontroller and analog semiconductors, today announced three development kits that enable the rapid design of accessories for iPod and iPhone using Microchip’s vast portfolio of PIC® microcontrollers. The kits provide examples of the hardware and software required to implement applications, such as digital-audio sound systems, docking stations and [...]
An indicator is nice, but how to implement that? Because all the intelligence of the heat regulation happens inside the soldering iron, the station itself is just a big 230->24V-transformer and an on/off-switch. Running an extra wire to the soldering iron to sniff out its status wasn’t an option. There is another way to get [...]
New mikroC PRO for dsPIC30/33 and PIC24 v3.00 BETA released!
mikroElektronika have release a new BETA version of mikroC PRO for dsPIC30/33 and PIC24 compiler with a lot of useful upgrades. Compiler is now producing smaller and faster code with SSA optimization. Make your comments alive with new feature called Active Comments. New and improved libraries [...]
Most old PDAs use CCFLs as backlights. While such a PDA itself can still be quite useful, the backlight sometimes is old or damaged. You can, however, replace it with a more modern and power-friendly solution: white leds. To do that in a power-efficient way, a bit more is needed, though.
Source: spritesmods
sPlan is a software with already many thousands enthusiastic users. You need a software to design your schematic circuit diagrams easy and fast? You won’t get pass sPlan! No matter if you only want to sketch a little circuit diagram or if you need to design a big project with several pages.
Download: sPlan 7.0
Keep your laptop and cell phone’s power plugs from falling off the back of your desk using a simple binder clip, no modification required. A very easy and inexpensive solution to a few binder clips. Binder clips are for sale in a commercial office or maybe you even have office located somewhere. The binder clips [...]
This project allows instant start sequentially but a dozen low-voltage lamps 12 V / 60 W, and makes them fade and always sequentially (but slower). This system has been designed to meet the demand of a visitor who wanted ten recessed low voltage spot in a driveway to his house, with the following function: – [...]
This circuit allows switching on a LED when the battery voltage (12V) drops below a certain threshold. The operating system is based on a comparison of tension, which comes in a zener diode. If the supply voltage is 12V and the zener diode is a 10V model (this is the case in the diagram), we [...]
This is a good looking and practical device that can be useful in many areas where countdown timer is needed. This project is based on the PIC16F84A microcontroller. The time range can be adjusted between 1 and 999 seconds. This project has 3 buttons and one of them is named Set Button. In order to [...]
A VU meter is often included in audio equipment to display a signal level in Volume Units; the device is sometimes also called volume indicator (VI). In this project we are building a basic and low cost LED VU Metre circuit . The extent (range) display is -18 dBu to +3 dBu, spread over [...]
Today we have a new category “Projects” and a new electronic project 12 Channel LED Chaser with PIC16F84A.
This project is based on the popular PIC16f84A micro-controller.The heart of this project LED chaser is the PIC16F84A PIC microcontroller.A 4MHz crystal and capacitors C1 and C2 22pf is used for providing clock pulses to the micro-controller. The [...]
