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Timekeeping - High Level ?
Depends on the precision required, I'd say.    My (lousy) clock occasionally skips seconds because I happen to know it's too slow, and skipping a second isn't a problem...
Sunday, 24 May 2020 - 17:56
Please help me with stepper motor
MrKendo wrote: Scroungre wrote:COM on the ULN2003 should be taken to Ground, On these parts, COM usually refers to 'common free wheeling diodes' and would be connected to the load...
Saturday, 16 May 2020 - 07:38
Please help me with stepper motor
If you are seriously putting AC (Alternating Current?!) into the center taps of your stepper motor windings, it's a miracle you haven't had a cheerful 'boom!' yet.   COM on...
Friday, 15 May 2020 - 12:29
ejecting Atmel ICE
Dunno if it's related, but my USB-ICE has a nasty habit of losing its mind under certain circumstances - namely, losing USB power (PC shutting down) before losing power on the...
Thursday, 14 May 2020 - 06:29
Internal Oscillator calibration
clawson wrote: Not that I've ever had a massage in any form but I can't help thinking that the last thing you might be doing during such a thing was running a stopwatch to ensure...
Thursday, 14 May 2020 - 01:45
Internal Oscillator calibration
bspembed wrote:As the request from the customers, Requiring compact design.   For that, go to a 4-layer board (move all those ground planes out of the way) and surface-mount...
Wednesday, 13 May 2020 - 06:48
Internal Oscillator calibration
More usefully:   bspembed wrote: But How do i connect to uC, (Bluetooth Tx is connected to Rx of uC) Only left with single GPIO i.e RST/UPDI Pin.   Put a bootloader in...
Wednesday, 13 May 2020 - 06:29
Internal Oscillator calibration
david.prentice wrote: i2C based 4 Digit 7 segment multiplexed display: 2 GPIO Pins.   multiplex needs 20% timing Buzzer: 1 GPIO    timing is not important...
Wednesday, 13 May 2020 - 06:24
Optimal width for long signal traces?
sparrow2 wrote:  is an antenna has to be a stub   What else would you call a trace with nothing on the other end?  S.
Sunday, 10 May 2020 - 08:29
Optimal width for long signal traces?
A 12" trace with nothing on the other end is an antenna.  You should expect it to radiate (poorly) and resonate (likewise).  S.
Sunday, 10 May 2020 - 03:07
bizzaro interrupt behavior
What baud rate are you using for the UART?  See if blinking an LED will do instead - I'm thinking what takes 45ms is your UART notice.  Just an idea - oh, and I'm sure...
Monday, 4 May 2020 - 00:03
Identify Autotune PID algorithm
DocJC wrote:  it looks more like some form of bang-bang control & may not even be PID. Agreed. Especially as the dTemp/dTime as the temperature approaches the...
Thursday, 30 April 2020 - 22:37