A weblog focused on interesting circuits, ideas, schematics and other information about microelectronics and microcontrollers.
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Disclaimer
Because I have not tested all electronic circuits mentioned on this pages, I cannot attest to their accuracy; therefore, I do not provide a warranty of any kind and cannot be held responsible in any manner.
MP3 Daisy player
24. September 2008 - 21:45 — adminThe Daisy is a multipurpose sound player for embedded applications. It can be used as a standalone personal music player,as the sound for an art project, in a kiosk, as a museum tour guide, in a toy, or anywhere that high quality embedded audio is desired. It uses MMC or SD flash memory cards so storage size is unlimited. It has several interface modes for either human or machine control.
I2C LCD back-pack
23. September 2008 - 8:57 — adminThe I2C LCD Back-Pack is a small(ish) PCB that can be plugged onto the back of an LCD so that you may control it over an I2C bus.
Power usage logger
23. September 2008 - 8:43 — adminThis device monitors household power usage and logs it to an SD card.
Infra-Red Proximity Sensors
20. September 2008 - 10:47 — adminUsing an IR LED as a proximity sensors.
Beagle Board
18. September 2008 - 17:23 — adminAn ARM Cortex development board with a lot of capabilities.
PIC Autorange Capacitance Meter
18. September 2008 - 17:17 — adminReally powerful autoranged capacitance meter based on PIC16F873. It means users does not need to adjust the range settings. The measuring range is quite large, from 5pF to 2600uF.
Open-source AVL
17. September 2008 - 22:07 — adminAVL stands for Automatic Vehicle Location, which is accomplished by means of a tracking GPS and M2M modules. Actually a small AVL can be used to track any objects, including kids and pets.
Multitherm
16. September 2008 - 18:04 — adminThis device, based on an Atmel ATMega168 microcontroller can monitor up to 16 DS18x20 thermometers, with a variable logging rate of 5 to 9999 seconds. The data is displayed on a multi-page LCD display for immediate viewing as well as being sent via RS232 at 19200 baud for recording. Data is time-stamped with an optional on-board 1-Wire real time clock.
ATtiny24/44/84 Adapter for STK500
16. September 2008 - 17:57 — adminIf you currently have a STK500 development board, you will face a problem because it doesn’t support any of Attiny24/44/84 chips. You have two ways: either buy STK505 adapter which is quite expensive, or develop your own.
Apple II emulator
13. September 2008 - 23:05 — adminThis project attempted to reconstruct a functional Apple II emulated on Atmel ATmega32 processors. Due to time constraints, a fully functional Apple II was not produced; however, a working emulated 6502 processor, memory subsystem, and partial GPU was produced.