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Modifying CF-card firmware/ID?
Once upon a time there was a device that would only work with an obsolete IDE drive whose ATA ID contains a certain string.  Since CF cards are ATA...
Wednesday, 16 October 2019 - 15:48
Measuring frequencies higher than the AVR?
I would like to explore building a small device that can sample and display 2 or 3 frequencies.  The high range (maybe 30MHz) would exceed the AVR's frequency.  0.1MHz...
Monday, 23 September 2019 - 18:11
AVR-0 Core independent LED fading?
Atmega 3209 (AVR 0 series).  I understand an led fading effect can be accomplished with pulses but I might not want to have my AVR distracted as it's got some...
Thursday, 5 September 2019 - 15:53
SD-Card & EEPROM on SPI
I have a project that uses an SD Card on the SPI interface.  I also wanted to add a small amount of extra EEPROM.  The EEPROMs come in SPI and TWI interfaces....
Monday, 19 August 2019 - 12:40
SD Card 5v to 3.3v level shifting for AVR
I've got two SD Card modules with onboard 5v to 3.3v conversion however they are implemented quite differently.  They both have 1117 LDO regulators for 3.3v.  One...
Sunday, 14 April 2019 - 14:08
Petit FatFS implementation
I've been reading up on Petit FatFS and trying to implement it for a few days now with no success.  Throughout my trials one thing I keep encountering is 'undefined reference...
Saturday, 6 April 2019 - 21:22
Error programming with SD Card reader interfaced to SPI
I have a very basic circuit circuit setup with an Atmega 8515, LED w/resistor, reset button, bypass cap, and an SPI interface to an AVR Dragon.  No issues in Atmel...
Thursday, 4 April 2019 - 13:48
Misc registers for GP?
Beyond the GPIOR's... what's the consensus on using other registers for general purpose?  For example the OCR1x's if Timer/Counter1 isn't being utilized?  Are...
Sunday, 30 December 2018 - 14:48
ATtiny external interrupt
Migrating from Arduino to AVR's & Atmel Studio 7 I'm having a hard time with external interrupts.  I've poured over the datasheet countless times, Googled the...
Saturday, 1 December 2018 - 19:54