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34 years of battery life? Umm... help me with my brain please.
There's no way I have this math right, so please... show me where I'm being stupid.   I've got a simple circuit that all it does is wait for the micro to count up to some...
Fri. Apr 7, 2017 - 09:31 PM
Basic firmware help required... help me understand clock speed.
  Forgive me, I have very little experience on the firmware side of things.   I'm working from a simple WDT based LED blink example I found for the device I'm using (...
Fri. Apr 7, 2017 - 05:07 PM
Help me spot my mistake?
Schematic attached.   This is a simple break out board for a Attiny10 with a FET on board to switch a load.  The FET is a DMN1019USN and the datasheet is also attached...
Thu. Apr 6, 2017 - 08:54 PM
AVRdude + USBasp + Attiny10 = partial success exactly once? What happened?
I made a very simple breakout board for an Attiny10 to play around with it.  It includes a standard 10-pin ISP connection, except (as per various online tutorials) MISO and...
Wed. Apr 5, 2017 - 06:14 PM
Stupid question time: what exactly happens when you (far) exceed pin current?
If a GPIO has a max rated current of 40mA... what exactly happens if it is exceeded?  By a little?  By a lot?   I understand that it gets "damaged", but how?  ...
Thu. Mar 16, 2017 - 01:36 AM
Cap and resistor for switches... what are they for?
Hi.  I'm looking at a schematic for an r/c radio controller that has a bunch of switches going to inputs on an Atmega64.  Each and every input goes like the attached...
Sat. May 23, 2015 - 11:59 PM
Atmega64a. Bad batch? How might I recover?
Just delete my posts since I'm a waste of David's time
Fri. Jan 4, 2013 - 10:38 PM
Simple (?) math/flow problem
I'd like to setup an ISR such that something happens every 100 cycles, but only for the first 1000 cycles. I'm sure this is simple but I'm not seeing it. Pseudo code: ISR(...
Sat. Oct 20, 2012 - 09:24 PM
ISP programming question: Multiple independent targets
Please don't bother asking "why" or trying to suggest a different method entirely... I just want to know if this is possible: Can I connect (permanently) 1 ISP programmer via...
Tue. Sep 25, 2012 - 04:22 AM
Something obviously wrong with this simple code snippet?
Hi. I don't have permission to post this code so I must keep it to this small snippet. uint8_t switch_value = 0xC0 ; // Both switches off if ( (...
Fri. Sep 7, 2012 - 03:59 PM
Is Xmega good for my new project?
Hi. I develop bits and pieces for the r/c aircraft scene. I have a new idea for a project and I've designed it around a small and cheap Attiny1634. The response has been quite...
Sat. Jul 28, 2012 - 08:41 PM
Programming a new AVR device?
Hi. So I just designed a built a circuit around the new Attiny1634... how do I go about programming it if it isn't yet supported by AVRDude? Or is it? How do I even know?...
Tue. Jul 24, 2012 - 08:43 PM

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