Comments on: 230v/110v AC Mains Detection Module Hookup Guide https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/?utm_source=rss&utm_medium=rss&utm_campaign=230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing Tutorials on basics of electronics, etc. Tue, 17 Aug 2021 06:22:46 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Tze https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-3600 Tue, 17 Aug 2021 06:22:46 +0000 http://learn.edwinrobotics.com/?p=692#comment-3600 Hi Emil,

Do you have any tutorial for Pi?

]]> By: El programador Ibérico https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-3595 Sun, 02 May 2021 16:44:13 +0000 http://learn.edwinrobotics.com/?p=692#comment-3595 […] For detecting those 230v we could use an already made board, like this one. The board uses an optocoupler, to put a physical barrier between the 230v and 3.3/5v of the microcontroller (optocouplers activate with light instead of electricity. Inside there is a small LED and a detector). In my case, what I did was replicate the board with discrete components, which are easily available and can be mounted relatively quickly. You can find the original schematic of that little board and more info in the creator’s website. […]

]]> By: emil https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-3594 Wed, 21 Apr 2021 14:31:56 +0000 http://learn.edwinrobotics.com/?p=692#comment-3594 In reply to Chris.

Glad to hear that. Yes it would be sending pulses during the negative cycle as well.

]]> By: Chris https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-3587 Sun, 28 Mar 2021 18:32:06 +0000 http://learn.edwinrobotics.com/?p=692#comment-3587 First off I want to thank you for offering this circuit worldwide, Im in the USA and needed it to simply tell me if the AC fan in my enclosure was on or not. I hated having to adjust the current or voltage detector boards offered.

One question – will it sense negative voltage as well as positive?

]]> By: Igor https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-1189 Fri, 30 Aug 2019 07:21:05 +0000 http://learn.edwinrobotics.com/?p=692#comment-1189 In reply to emil.

Hi,

Thanks for the info! Glad it doesn’t need extra electronics to work with. Now I have just to wait for it to arrive…

]]> By: emil https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-1187 Thu, 29 Aug 2019 09:50:10 +0000 http://learn.edwinrobotics.com/?p=692#comment-1187 In reply to Igor.

Hi,

The objective of R3 is only to pull up the signal. You can use it with the Raspberry Pi by powering the device with the onboard 3.3V pin.

]]> By: Igor https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-1186 Thu, 29 Aug 2019 09:30:48 +0000 http://learn.edwinrobotics.com/?p=692#comment-1186 Hi,

I have an RPi 3B+ and want to use this little unit to detect power outage. The Pi is on an UPS.
I have very little understanding in electronics, just enough not to fry things up. As I understand RPi expects 3.3V signals and it seems to me that this one works at 5V. Am I right? Do I need a level shifter in order not to fry the RPi?
If not, what is the correct connections?
Thanks,
Igor

]]> By: emil https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-922 Thu, 28 Mar 2019 05:04:41 +0000 http://learn.edwinrobotics.com/?p=692#comment-922 In reply to Karanbir.

Not at the moment. We only sell assembled ones on tindie https://www.tindie.com/products/edwinrobotics/ac-mains-zero-crossing-detector/

]]> By: Karanbir https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-921 Wed, 27 Mar 2019 14:02:18 +0000 http://learn.edwinrobotics.com/?p=692#comment-921 Is the bare pcb available?

]]> By: Muneer Mohammad Ali https://learn.edwinrobotics.com/230v110v-ac-mains-detection-using-arduino-raspberry-pi-and-esp8266-thing/#comment-877 Tue, 26 Feb 2019 11:09:23 +0000 http://learn.edwinrobotics.com/?p=692#comment-877 I needed to control the brightness of a bulb using a circuit like this. Will the pin ‘S’ give PWM output?

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