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One for the analog engineers
clawson wrote: Simonetta wrote:But now I can't imagine anyone paying more than $20 US for this.   Then I'm guessing you've never heard of Eurorack where very similar (often...
Saturday, 5 March 2022 - 23:55
One for the analog engineers
Summers, yes.  Winters?  Not so much!    S.
Saturday, 5 March 2022 - 07:36
Is it always good to add a capacitor between Gnd and Vcc? [Beginner]
470uF is a pretty big one - I often put 220uF on my boards and declare myself happy.  But you also need some small ones (0.1uF) as well, because their parasitic inductance is...
Monday, 28 February 2022 - 23:45
PCB Edge connector strength and fixture
Yah.  Put some holes in the PCB, and some holes in the enclosure, and some nuts and bolts.  Spacers might come in handy.   Note that generally it's much cheaper if...
Sunday, 27 February 2022 - 08:11
Multiplexed leds 8x8 display
Please do one more thing?  Mark your post as 'the solution'.  Thx.  S.
Tuesday, 15 February 2022 - 20:17
Your Three Favourite Technical Books?
No love for "Ingenious Mechanisms for Designers and Inventors"?  It's a four-volume set, granted, and I've never actually used any of them, but for a certain flavour of geek...
Tuesday, 15 February 2022 - 10:28
Multiplexed leds 8x8 display
koji27 wrote:Of course i should rotate it. Ok i will remember. Inputs on left and outputs on right    Don't forget "mirror" - no, it won't flip the text.    S.
Sunday, 13 February 2022 - 06:45
Multiplexed leds 8x8 display
I'm with grohote on this one.  It reeks of a bug in your shift register(s).  Note that a fast flashing LED can look like a continuous glow to the human eye.   Start...
Saturday, 12 February 2022 - 14:36
Controlling Engine Electrical Noise
A few other remarks:   As you've noticed, an automobile engine is not merely noisy to ears, it's very noisy electrically too, and a 1950's car will be really bad!  ...
Friday, 11 February 2022 - 10:09
"Device is locked. A chip erase is needed to gain full access to the device."[closed,illegal MCU? ]
It's possible you have been sold fake chips.  Sparkfun (a manufacturer of AVR based devices) once did get sold a pile of fakes.  Try a few from a reliable distributor...
Sunday, 6 February 2022 - 17:48
PCB--- sunny side up?
I've laid out thousands of boards in my life, and those I put components on the back of I could probably count on one hand (maybe with finger binary!  .  And most of...
Monday, 24 January 2022 - 22:31
"|=" Is not RMW
It is, however, also a useful suggestion.  If you don't like what the compiler does, write some inline assembler.    Problem solved without trying to change...
Sunday, 23 January 2022 - 23:03