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Storing data in external flash chip using xmega
Hi, I will start a new project using an XMega chip soon. In this project I have to store a large amount of data. For the moment we are using a µSD card, the size is good (2GB)...
Friday, 27 April 2012 - 08:36
Problem communicating with MAX6675
Hi, I'm trying to read the temperature using a MAX6675 connected to an ATmega16. But without using the SPI interface. Here the connection: PC0 - SCK PC1 - #CS PC2 - SO Here the...
Wednesday, 11 May 2011 - 19:57
I²C communication between 2 ATmega88
Hi, I'm trying to setup an I²C communication between 2 ATmega88, using the AVR AN 311 & 315. The communication seems to be not working. Change done: - The CLKDIV8 is...
Monday, 21 February 2011 - 13:36
USB Switch
Hi, I would like to be able to control the USB path between two devices without unpluging the connectors. So be able to switch on/off the power lines and the data lines. One...
Monday, 14 February 2011 - 09:22
SIM card multiplexer
Hi, I would like to create a SIM card multiplexer, from 4 cards to one. I would like to not use any FPGA/CPLD components, only logic chips. I have done a first schematics using 3...
Wednesday, 2 February 2011 - 13:41
Problem with the TPS61040 DC/DC Boost Converter
Hi, I'm facing an issue with the TPS61040 from TI, I would like to create an output voltage up to 14V from a 3v3 input voltage. For the drawing I used the typical one described in...
Friday, 17 April 2009 - 07:53
Selecting battery model
Hi all, I'm currently making a small project using a LiIon battery, it consumes 150mA on 3v3 max. I would like to know how to choose the minimal battery power I need to use....
Wednesday, 20 August 2008 - 11:16
Digital PLL
Hi all, I want to make a digital PLL, I know the how it's work, but I don't found on the web what I want. My goal is: Input frequency: 1 to 5 MHz Output frequency: 1 to 50 MHz (...
Monday, 17 September 2007 - 12:44
Booting on DataFlash
Hi, I have a project using an ATMega88 or ATmega168. They are choose for their package size. I don't need more pins. But the flash size could be not enough. Is it possible to...
Sunday, 10 September 2006 - 09:31