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atmega32u4 partial functionality from port D pullups
I'm using an atmega32u4  and when setting my PORTD (all bits)  to out and Low I'm not seeing the analyzer react on all pins.  I do not have an external pull ups. If...
Tuesday, 20 October 2020 - 18:28
timer1 and 2 are not working the same.
Using an ATMEGA328, I have two timers and only using them for back ground counters, no interrupts.     Timer 1 my init is TCCR1B = (1<<CS12); using it like so if(...
Tuesday, 1 September 2020 - 17:05
My pin detection change from first to second run
I have a project on an old atmega328 (12MHz) that I use a wile loop to detect a pin change. I'm not sure the pinchange interrupt would help or be my issue here but for debugging I...
Wednesday, 19 August 2020 - 14:57
applied 5 volts to spark fun nrf24+
I ordered 2 sparkfun boards and could not figure out why one didnt work until I saw it was wired to 5 volts. (damn).. I have ordered my replacemens but was wondering if anyone...
Thursday, 16 July 2020 - 15:39
check state of pins on d- d+ of atemga32u2
If I have not initialized the USB function of the 32u2, can I get the pin status of the external D- D+ states? If so how would that be done?   UPOE  bits 0 and 1 maybe?
Sunday, 14 June 2020 - 16:54
what is the name of the larger vs smaller dip 28?
I pretty much need to find a board to go from a ATMEGA328  to the wide dip28. Just not sure of the right name to search for what I need. Here is a picture of the board I...
Tuesday, 9 June 2020 - 22:16
Simulating a CRT corner frequency with an LED
  I'm attempting to do what I can with an AVR clocked at 12MHz to turn on an LED and back off simulating that of a CRT tv.     I have a device here that was...
Thursday, 4 June 2020 - 14:36
using the at90usb162 vs atmega32u2 usb not working
I was able to get lufa flashed to an atmega32u2 on one of the old retired 16u2 dev boards. Like this one https://www.mattairtech.com/inde...   Since apparently the 16u2 is...
Saturday, 30 May 2020 - 21:34
Can not get the SPI to communicate over clock/128
I noticed something in some code I wrote the other day and got to wondering.  I have created a master to emulate a play station controller. I'm using a atmega328 with a 12MHz...
Monday, 11 May 2020 - 23:24
Strange nrf24 issue with mega 32u2/328
Not really sure where the problem is here, my guess is in the code...   To put this is words... I can only send data one time, unless I send more then 1 byte. - As pathetic...
Sunday, 12 April 2020 - 23:51
mega32u2 max spi does not look right.
    I set my spi to max but not achieving what I was hoping for.       SPCR = (1<<MSTR)|(1<<SPR1)|(0<<SPR0)|(0<<SPR1)|(0<...
Wednesday, 8 April 2020 - 00:39
Are the atmega16u2 and at90usb162 the same?
What is the difference in these? I see the atmega16u2 shows USB (1, Full Speed) and the at90usb162 (1, none) but the foot prints match.  Looks like the atmega16u2 's are...
Thursday, 2 April 2020 - 20:18

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