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Fast AC voltage fault detector
In this particular case, I think the OP was using LEDs as an example of an output.  They may indeed have something much faster to hook up in mind.  S.
Friday, 21 February 2020 - 19:05
Fast AC voltage fault detector
If you're only detecting peak voltages, you have a frequency problem.  Given an AC line frequency of 50Hz then the peaks will only come along every 20ms - much longer than...
Friday, 21 February 2020 - 12:04
Quadrature encoder is moved while power off
avrcandies wrote:Obviously more than one spin will be undetectable.   There are multi-turn absolute encoders out there.  They're expensive.  S.
Tuesday, 18 February 2020 - 18:11
Connecting some pins together (mega88)
PS - Yes, there are sometimes applications for self-destructing chips.  e.g. when your spy plane crash-lands at a Chinese airport.  Most of these applications involve...
Tuesday, 11 February 2020 - 01:41
Connecting some pins together (mega88)
A few more suggestions:   1) Most board houses charge by the square inch.  Even one-time setup charges are going away.  If the board really is that small, it'll be...
Tuesday, 11 February 2020 - 01:24
Recovering "External 16MHz"-fused mega2560
As an aside, I got burned by this once.  Apparently even Atmel (now Microchip) isn't consistent about the XTAL pins.   gchapman wrote:XTAL2 then XTAL1, if need be, per a...
Saturday, 8 February 2020 - 01:21
Connecting some pins together (mega88)
Should be okay as far as I can see, but as you understand this is not a recommended practice.  If you get your program wrong, you will blow your chip.  So don't do that...
Sunday, 2 February 2020 - 21:00
Ring Buffer vs Array Buffer
david.prentice wrote: The first singe-chip MicroControllers had UARTs.   Which meant you could discard the external memory bus.   My first-ever use of an AVR was a...
Saturday, 25 January 2020 - 10:11
Very tempting
The 'bundle' says it's a 4-channel, but it looks like they mux them into two ADCs.  's got four BNC probe connectors...    S.   Edited to add: And they admit...
Wednesday, 22 January 2020 - 00:33
Very tempting
jgmdesign wrote: Vendors get paid first.   Sometimes I wish my clients had your ethos.  S.
Wednesday, 22 January 2020 - 00:01
Accurate 8-bit timer using 16MHz crystal
skeeve wrote: or the simulator differs significantly from reality.   FTFY.    S.
Tuesday, 21 January 2020 - 22:34
Ring Buffer vs Array Buffer
So set the 'command rec'd' flag on the first S, and ignore the rest.  Won't work if the 'S' is in italic, though...    S.   Edited to add: Unless it's only...
Tuesday, 21 January 2020 - 19:45

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