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Feeding oscillation into atmega644P and creating an alarm
avrcandies wrote: Close, but you have not covered all possible error apertures there.  This should handle it---what other cases did you envision? He does need to respond to...
Monday, 14 March 2022 - 22:56
Feeding oscillation into atmega644P and creating an alarm
avrcandies wrote: ....  If extending bits, the timer (KHz counter) overflow IRQ just increments the extra bits count  ---pretty simple you have to manage a...
Monday, 14 March 2022 - 22:10
Feeding oscillation into atmega644P and creating an alarm
raser1992 wrote: If my only option is timer0 due to other timers being already used, how will I go about doing this? I'd still use Timer0 but maybe interrupt at shorter time base...
Monday, 14 March 2022 - 00:59
Feeding oscillation into atmega644P and creating an alarm
raser1992 wrote: My metal detection circuit is constantly feeding 94kHz into my ATMEGA644P (T0 counter pin). When metal is near, frequency rises up to 105kHz.  My goal is -...
Monday, 14 March 2022 - 00:45
Measuring AC current flow for 24V and 3 phase power
djoshi wrote: It is just that these modules, 1 Channel AC 220V Optocoupler Isolation Module Detect Board Adaptive For PLC | eBay Have Live and Natural labels on the terminal...
Sunday, 13 March 2022 - 19:18
Measuring AC current flow for 24V and 3 phase power
djoshi wrote: The current transformer based sensors, if I am correct produce about 1V output at 5A, so at 20mA, it will be very close to a few mill volts.  It will be much...
Saturday, 12 March 2022 - 21:12
re-sync timer when pin change interrupt happens to capture pin state accurately
avrcandies wrote: There should be no scope to "go out of sync. during long messages." I was thinking similar, but thought maybe OP is planning on something beyond an 8-bit...
Saturday, 12 March 2022 - 08:49
re-sync timer when pin change interrupt happens to capture pin state accurately
slow_rider wrote: I have a bit stream that is sent over a wire, part of an asynchronous communication protocol. The baud rate should be 1200 baud, but in reality, each device...
Saturday, 12 March 2022 - 05:48
Measuring AC current flow for 24V and 3 phase power
djoshi wrote: Great, I will give it ago. Have you used such sensors before? Not those exact ones, but your main issue with a 5A or 10A sensor with 1V out, will be noise floor...
Saturday, 12 March 2022 - 00:09
Measuring AC current flow for 24V and 3 phase power
djoshi wrote: I was thinking of a sensor similar to  AC current sensor, SCT013-10A-1V / # F T0R 0775 | eBay   Worth a try :)   Their specs suggest a 5A model...
Friday, 11 March 2022 - 23:49
Measuring AC current flow for 24V and 3 phase power
djoshi wrote: Yes, I totally agree the technicians have requested if they can add some Non-Invasive Sensors (something that can be simply strapped to a wire). They want to...
Friday, 11 March 2022 - 23:17
Measuring AC current flow for 24V and 3 phase power
djoshi wrote: If you look at the circuit diagram there are multiple lamps, I am simply trying to read those signals preferably in a Non-Invasive way and report them remotely....
Friday, 11 March 2022 - 22:46

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