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blinking & buzzing stopwatch: how to make piezo buzzer work?
ka7ehk wrote: If it is a "bare" ceramic element, I would put it between two port pins. Make one high and the other low. In a time equal to 1/2 of the period of the tone you want,...
Wednesday, 21 June 2017 - 01:40
blinking & buzzing stopwatch: how to make piezo buzzer work?
Same basic idea.  But you need to switch the buzzer a lot faster - Try 440 times per second, and see if you get an 'A' out of it.  S.  
Tuesday, 20 June 2017 - 23:46
YACVASMW
theusch wrote: I'll opine that with any of the mainstream C toolchains with AVR target, "clean" C, written with the underlying architecture in mind, will turn into very...
Tuesday, 20 June 2017 - 20:22
Using Eagle to create CAD files needed for board assembly
ka7ehk wrote: Here is a copy of the centroid generator for EAGLE. It is from a quick turn board house called "Screaming Circuits" (located close to Portland, Oregon).   Note...
Tuesday, 20 June 2017 - 18:40
Using Eagle to create CAD files needed for board assembly
ka7ehk wrote: There is a ULP that provides component centroid coordinates. That has been useful for  one of my CMs. Not sure where I got it. Can send it to in a few hours....
Tuesday, 20 June 2017 - 11:52
High-density connector recommendations
Another thought would be to send a much higher voltage (48?) down the cable and use DC-DC convertors to make the required voltages at the other end.  Actually, the 12V would...
Tuesday, 20 June 2017 - 09:25
High-density connector recommendations
Hafta admit I'm kinda curious where you get connectors that are NOT industry standard.  I've built a gazillion systems with DE-9 connectors, both male and female, and the...
Saturday, 17 June 2017 - 11:35
High-density connector recommendations
That's the beauty of finding an industry standard and going with it.  You can get extensions and gender-benders and whatever all for not much money.   I started reading...
Friday, 16 June 2017 - 19:46
YACVASMW
Generally, I write the time-critical bits first.  And test them all alone.   All the rest is window dressing.   S.  
Friday, 16 June 2017 - 16:54
YACVASMW
Ayup, most of that was a cheery rant.   Here's another:  Including assembler code in C requires much more fussing about than straight assembler.  Just look at the...
Friday, 16 June 2017 - 14:17
YACVASMW
mark4th wrote: Unless you are from Manchester England you use the right tool for the job.  You dont drive screws with a hammer (Called a Manchester Screwdriver :).   Of...
Friday, 16 June 2017 - 07:40
YACVASMW
C is supposed to be this wonderful processor-independent universal language, but it isn't.  You get different results from different compilers, and even different results...
Friday, 16 June 2017 - 07:32

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