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I need a special kind of switch
Here's my problem.  I need to wake up (and sleep) a battery-powered AVR by closing a switch or some other means, but I can't have any physical contact with the board or...
Saturday, 27 February 2016 - 22:58
Best (easiest, cheapest) RF connection method?
I'm posting this here because I didn't think it fit well into any of the wireless forums.  I need to replace wired buttons with some sort of RF key fob connection.  All...
Saturday, 29 August 2015 - 18:43
Christmas giveaway for students and noobs - blank MEGAxx8 PCBs
I found about 6 dozen of these blank PCBs in a drawer, from some past lifetime.  They're pretty generic, with 12 IO brought out on headers, and a 75175 serial translator....
Thursday, 18 December 2014 - 21:53
Useful add-ons for PCB prototypes?
This question is prompted by some good ideas I've seen here, and a few I've had on my own.  I thought it would be useful to collect them in one place.   So the question...
Wednesday, 10 December 2014 - 02:21
What counts as PWM?
I'm writing a tutorial episode on PWM, and I've come upon a rather basic question:   Does the term "pulse width modulation" apply only to signals where the pulses are regular...
Sunday, 28 September 2014 - 02:22
Anybody done a Kickstarter project?
I've been tempted to try a kickstarter project just for the experience.  I'd do something very simple, a 17x50mm RGB LED driver board (prototype PCBs already made and working...
Monday, 8 September 2014 - 20:53
How to get a proper PCB ground pour?
OK, I'm really a software guy, but I dabble in some hardware design. One of the problems I often have is how to create a fully-connected ground pour on both sides of a 2-sided...
Monday, 25 August 2014 - 22:34
External tutorial on 7-Segment Displays (uses AVR)
I just finished this tutorial and thought it might be useful to some of the folks here. http://www.embeddedrelated.com/s...
Thursday, 14 August 2014 - 05:16
"Start Without Debugging" builds but does not load
Is there a trick to getting "Start Without Debugging" to work? I can download a program through the Tools dialog box and all is fine, but using the "SWD" option causes a build...
Monday, 21 July 2014 - 07:35
ISP strangely flakey on ATtiny44, 84
I've made up some very simple boards that take a Tiny44 or 84. The first few, using 44s, programmed and worked just fine. The next 3, built with both 44s and 84s, fail to...
Monday, 27 January 2014 - 17:18
Is there a replacement for PROGMEM and its access functions?
I thought I read recently that there is a nicer way to declare and access flash-based data. Did I dream that, misunderstand, or is it true? Didn't find anything with some...
Monday, 20 January 2014 - 22:28
Quick tutorial on driving WS2812(B) RGB LEDs with 8MHz AVR
Hey all, I just posted this short tutorial and thought it might be of interest. Don't know the best group for this, so I'll do it here and trust it to end up in the right...
Friday, 15 November 2013 - 00:27

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