SMS alarm is a very simple device. To send SMS it uses Siemens gsm phone and it has 5 inputs – it means that it can send 5 different SMS messages. For each sensor input we write SMS text that we wish to receive when alarm condition happens. Programing is done via PC and proper [...]

Why PICkit2? In addition of the above PICkit2 uses USB interface to communicate with the computer, so there’s no more pain to use it with modern PCs or laptops with no COM or LPT ports at all. Because Microchip has published the whole schematics and the firmware running in the device we have the chance [...]

This project uses a standard (PDIP) PIC16F684 as well as a standard thermistor. It will tell the temperature between 0 and 140 farenheit. The temperature is displayed on a 3 digit, 7 segment display. This project is actually quite easy to build; the hardest part is calibrating the thermistor… Source: Jason’s PIC Projects Page

As an example circuit Marc brought the schematic of a micro television transmitter (designed by Tetsuo Kogawa) which can transmit video signals that can be received by a common analog television with an antenna. The first thing to learn was how to design a circuit layout in the free available Eagle software: First decide which [...]

Power Supply 0-24V 0-3A Source: elektronicastynus

By  Talip Kiziltepe email: talip_kililtepe@hotmail.com Here is my 220v flash light circut i do try very good working.

This board can program an AVR microcontroler ATMEL (ATmega8, ATMega32, …) from a parallel printer LPT1 using ISP functionality In System Programming. This programming type can program and/or configure microcontroler directly on the target board without rmoving device and put it on a separate programmer. This board is compatible with programming software “PonyProg”. Source: G. [...]

The project name says it all. It is a device that will charge things like Ipods, PDAs, other other devices that plugs into a USB to charge. Source: GoodAtIt

This is a simple design that demonstrates the USB peripheral on the PIC 18Fs. There are a bunch of examples for the 18F4550 40 pin chips online, this design demonstrates the smaller 18F2550 28 pin version. The PCB uses surface mount parts, but all components are available in through hole versions. Source: ian

Certain buttons on a TV remote can get worn out over time. In my case it was the channel up and channel down buttons. The contacts on the bottom of the button are likely worn out. This is how I fixed mine. Source: mmelville3

Monitoring several cameras on one monitor is usually done in one of two ways:  divide the screen into sections and show them all at once, or time sequence the cameras onto the whole screen. Source: Mondo