Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs
Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Four channel burglar alarm on PIC

If you want to build simple and reliable burglar alarm system from few electronic parts try this – PIC based four channel alarm system. It monitors 4 normally connected (NC) input channels. If at least one of the channels loop is disrupted it triggers alarm and shows Activated zone by flashing one of LEDs.   Project is really well documented. Because project was developed as final project for Electronics coursework, it has more that documentation – it also includes deep analysis of each part of circuit. So material should also serve as nice tutorial for PIC starters. Or you can just simply build the project, grab source code and flash it. Continue reading

Interfacing Atmega8515L to RF-24G wireless module

If you are considering wireless design you may consider of using RF-24G wireless module which works at 2.4GHz frequency. With this module your application may reach 1Mbps speed and may provide up to 250 data stream channels. You may check the abilities in datasheet. So there is simple project showing how to run these modules with microcontroller. Simple Circuit which interfaces module to Atmega8515 and receives data from USART terminal which is immediately transmitted. After transmission module enters receive mode These modules are powered with 3.3V so be sure not to connect it to 5V supply as you may damage it. For some of you this example may serve as a starting point to wireless. Download complete Project files(155kB) . Continue reading

320×240 color LCD with touchscreen controlled by AVR

320×240 is quite big screen that can fit many interesting projects. Especially if control is done via touchscreen. Well controlling such LCD require some control. Patrick have been developing Hitachi TX14D11VM1CAA control software for Atmega162 and recently he released first release.   Display is controlled by S1D13705 LCD controller while touch screen values are read with LTC1298(ADC). Atmega162 board also can read Compact Flash card information(including image drawing) and present it on LCD screen. You can download zipped project from AVRFreaks or from authors page when it will be available. Continue reading

Simple and small portable AVR MP3 player

I bet that using devices that you have built is an exiting feeling. So why not to listen MP3 songs with your own MP3 player. So Michael does. He have been developing a simple portable MP3 player powered by Atmega128 microcontroller and VLSI VS1011b MP3 decoder IC.   MP3 player reads songs from MMS/SD data media where also playlists and skins can be stored. Player is powered from LiIo/LiPo battery which can be charged easily with included charger in to circuit itself. Color displays (128×128 pixel and 256 color) is taken from Nokia 6610 cell phone so plauer can work in both – text and graphical modes. All firmware is written in easy accessible WinAVR C language. Media supports FAT32 file system so there is no problem to write songs… Continue reading

Numeric Simon memory game on Olimex PIC-MT Dev Board

If you have a Olimex PIC-MT Dev Board near by, you may want to try this popular Simon memory game modification that has been developed by geeksinside. Geeksinside did a review of the Olimex PIC-MT development board so you may easier to decide if it fits your needs. Or there is another option. They are currently running a tips contest this month and giving away a second Olimex PIC-MT. So don’t hesitate and try your luck. Continue reading