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UC3B0256 vs. UC3B0512 power requirements?
Hello,   I've had a working board with a UC3B0256 for some time, the layout has been proven with several iterations and follows all of the checklist requirements.   I...
Monday, 11 May 2015 - 15:26
ADC and DAC stability withstanding VDD variation
I'm using a AVR32 with external ADC and DAC chips (AD7923 and AD5687R respectively) via SPI. The AVR32 is on 3.3V, regulated down from the main 5V rail which also drives the AD...
Friday, 8 August 2014 - 19:57
uc3b064 dfu-programmer trouble
Hello! I've made a hello-world for the EVK1101, used dfu-programmer to successfully flash via the standard bootloader, and it works wonderfully. I'm onto the next stage where I've...
Thursday, 5 June 2014 - 21:11
slow digital output? [solved: DDR mistake set back to input]
good evening everyone, i'm stumped-- the root of my problem being that PORTB on my ATMEGA328P is acting like it has huge capacitors attached to the lines-- very long tails to...
Thursday, 19 April 2012 - 02:18
pull-ups stuck permanently on
i'm a bit confused and perhaps fried a few inputs. on my atmega168a i'm detecting a switch. i used a pull-down resistor as the switch connected to +5. i mistakenly set PORTB to...
Thursday, 6 October 2011 - 00:16
callbacks and TWI
Hello, Using callbacks for the first time and have run out of ideas. I'm using the arduino twi.c and twi.h, which require a user-registered callback for slave receive: (from twi.c...
Thursday, 4 November 2010 - 21:00
bootloader flash not writing
i've read the FAQ, datasheet, and scoured various threads here, but it seems i'm still not seeing the problem. bootloader in place and seems to work fine, except data written to...
Friday, 9 July 2010 - 18:08
bootloaders and avrdude
greetings. i'm trying to figure out the difference in functionality when specifying the programmer (-p) parameter in avrdude as "stk500v1" vs "arduino" it was my understanding...
Friday, 9 July 2010 - 02:12