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chip select for 2xUART
Recently I have similar requirements 2 UARTs for a master device. 1 Connected to some slave devices (250kbps) 2nd as user interface connected to PC (115200bps) . mega324P offers...
Tuesday, 22 October 2019 - 18:11
PWM precision on Atmega 328P
jiherve wrote: The problem is : If i adjust the cap then output period change only by step of half clock period instead of a continuous change as expected, and so for thermal...
Monday, 21 October 2019 - 16:58
[ask] reading voltage and current phase in 3-phase distribution system
Let's consider some calculations: .  Assuming 3 phase signals 220Vrms=622Vpp converted and scaled down (ISOLATED, DC Sine wave, Vpp=1.1 V) connected to 3 ADC channels . ...
Saturday, 19 October 2019 - 10:49
[ask] reading voltage and current phase in 3-phase distribution system
e0ne199 wrote:how do you get 620Vpp for 220VAC rms?   you don't know how to calculate Vp-p from Vrms, please don't mess with 220V    https://www.allaboutcircuits....
Friday, 18 October 2019 - 14:06
hidden gem
MrKendo wrote: The idiom while (x--) {} is quite common for situations where you can loop 0 or more times (ie x can be 0). awneil wrote: and if it's terse code you like, why not...
Wednesday, 9 October 2019 - 14:01
Cleaning Signals from 300 ma sensor
Scroungre wrote:Meanwhile - just what are you measuring there?  The power rail?  The signal out of your sensor?  Where's the 'scope probe?  Where's its ground...
Saturday, 5 October 2019 - 08:07
Protocol for streaming serial data?
awneil wrote:Any suggestions for any "widely used" and/or "well-established" protocols for streaming serial data from a microcontroller-based box of sensors DMX512 for lighting...
Friday, 27 September 2019 - 19:02
[ask] reading voltage and current phase in 3-phase distribution system
e0ne199 wrote:don't worry i have certified multimeter that complies with IEC standard (not the cheap multimeter that is made in china), That is not the point! The point is how to...
Wednesday, 25 September 2019 - 06:05
Odd array index behavior
lautman wrote: I've hard-coded the indexes in this call arbitrarily to 4 (it works fine with any value 0 - 9) because if I use i, garbage ensues So the code in #1 is your debug...
Wednesday, 25 September 2019 - 01:20
[ask] reading voltage and current phase in 3-phase distribution system
Before embark the project, see this video explaining basic info about 3 phase AC. . Don't miss the 03:00 minute when he tries to measure the outlet voltage by multimeter! https://...
Tuesday, 24 September 2019 - 17:20
LLVM 9
http://llvm.org/  wrote:Despite its name, LLVM has little to do with traditional virtual machines. The name "LLVM" itself is not an acronym; it is the full name of the...
Tuesday, 24 September 2019 - 06:00
Protecting RS-485 busses
AN-1057 worthes to remind again, is mentioned several times before in this forum. .  There are also robust RS-485 ICs that can survive from wiring faults and ESD of...
Monday, 23 September 2019 - 19:33

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