MainsFrequency2.0 - Revision history

Bertrik Sikken: /* Software */

2025-04-30T08:57:53Z

Software

← Older revision		Revision as of 08:57, 30 April 2025
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	To flash the esp32c3 board:		To flash the esp32c3 board:
	* ~~check out~~ the code		* Clone the code from github:
	git clone https://github.com/bertrik/~~MainsFrequency~~		git clone https://github.com/bertrik/GridFrequency
	* enter the esp32c3phase directory		cd GridFrequency
	~~cd MainsFrequency~~		* Set up a python virtual environment and install platformio
	cd ~~esp32c3phase~~
	* ~~set~~ up a python virtual environment and install platformio
	python3 -m venv .venv		python3 -m venv .venv
	source .venv/bin/activate		source .venv/bin/activate
	pip3 install platformio		pip3 install platformio
	* ~~connect~~ the board, compile and upload		* Connect the board, compile and upload
	pio run -t upload		pio run -t upload
	* ~~connect~~ with serial terminal, to watch frequency measurements		* Connect over WiFi to the access point inside the ESP32
			* Configure your WiFi credentials on 192.168.4.1
			* Connect with serial terminal, to watch frequency measurements
	pio device monitor		pio device monitor

2025-04-30T08:55:29Z

Software

← Older revision		Revision as of 08:55, 30 April 2025
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	To flash the esp32c3 board:		To flash the esp32c3 board:
	* install platformio
	* check out the code		* check out the code
	git clone https://github.com/bertrik/MainsFrequency		git clone https://github.com/bertrik/MainsFrequency
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	cd MainsFrequency		cd MainsFrequency
	cd esp32c3phase		cd esp32c3phase
			* set up a python virtual environment and install platformio
			python3 -m venv .venv
			source .venv/bin/activate
			pip3 install platformio
	* connect the board, compile and upload		* connect the board, compile and upload
	pio run -t upload		pio run -t upload

2025-04-30T08:54:23Z

Software

← Older revision		Revision as of 08:54, 30 April 2025
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	== Software ==		== Software ==
	~~Old github project:~~
	~~https://github.com/bertrik/MainsFrequency~~
	New github project: https://github.com/bertrik/GridFrequency		New github project: https://github.com/bertrik/GridFrequency

2025-04-23T15:13:02Z

Software

← Older revision		Revision as of 15:13, 23 April 2025
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	== Software ==		== Software ==
	~~Github~~ project:		Old github project:
	https://github.com/bertrik/MainsFrequency		https://github.com/bertrik/MainsFrequency
			New github project: https://github.com/bertrik/GridFrequency

	To flash the esp32c3 board:		To flash the esp32c3 board:

2025-03-08T16:13:16Z

Undo revision 33605 by Bertrik Sikken (talk)

← Older revision		Revision as of 16:13, 8 March 2025
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	{{Project		{{Project
	\|Name=MainsFrequency2.0		\|Name=MainsFrequency2.0
	\|Picture=~~meshtastic~~.png		\|Picture=ZMPT101B.png
	\|Omschrijving=A simple mains frequency counter		\|Omschrijving=A simple mains frequency counter
	\|Status=In progress		\|Status=In progress

2025-03-08T16:12:47Z

← Older revision		Revision as of 16:12, 8 March 2025
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	{{Project		{{Project
	\|Name=MainsFrequency2.0		\|Name=MainsFrequency2.0
	\|Picture=~~ZMPT101B~~.png		\|Picture=meshtastic.png
	\|Omschrijving=A simple mains frequency counter		\|Omschrijving=A simple mains frequency counter
	\|Status=In progress		\|Status=In progress

2023-10-05T14:46:29Z

Zero cross algoritm

← Older revision		Revision as of 14:46, 5 October 2023
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	* Any DC offset in the mains frequency waveform is automatically balanced out, no need to keep track of the median or quartile values		* Any DC offset in the mains frequency waveform is automatically balanced out, no need to keep track of the median or quartile values

	=== Zero cross algoritm ===		=== Zero cross algoritm (old idea) ===
	This is my older idea for an algorithm to get accurate instantaneous frequency:		This is my older idea for an algorithm to get accurate instantaneous frequency:
	* During approximately 100 ms, sample the mains frequency waveform and store it in a buffer.		* During approximately 100 ms, sample the mains frequency waveform and store it in a buffer.

2023-09-19T09:29:25Z

Using ZMPT101B (old idea

← Older revision		Revision as of 09:29, 19 September 2023
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	The ADC1/UART1 RX pin is the input for 50 Hz. You can just leave that unconnected and it will pick up 50 Hz, or perhaps connect a short piece (20 cm or so) of wire to it.		The ADC1/UART1 RX pin is the input for 50 Hz. You can just leave that unconnected and it will pick up 50 Hz, or perhaps connect a short piece (20 cm or so) of wire to it.

	=== Using ZMPT101B (old idea ===		=== Using ZMPT101B (old idea) ===
	For measurement with an ESP8266, like a Wemos D1 mini or nodemcu, you need to put a 180k ohm resistor in line with the output from the ZMPT101B to the A0 input.		For measurement with an ESP8266, like a Wemos D1 mini or nodemcu, you need to put a 180k ohm resistor in line with the output from the ZMPT101B to the A0 input.
	The A0 input already has a 220k/100k resistive divider, effectively becoming a 400k/100k resistive divider with the series resistor, scaling down the 0-5V range to the 0-1V range required for the ADC on the ESP8266.		The A0 input already has a 220k/100k resistive divider, effectively becoming a 400k/100k resistive divider with the series resistor, scaling down the 0-5V range to the 0-1V range required for the ADC on the ESP8266.

2023-08-25T21:10:09Z

Integration into revspace sensor infrastructure

← Older revision		Revision as of 21:10, 25 August 2023
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	There is a measurement device present at revspace (above the green tool board). It sends frequency data to the revspace MQTT server once every 5 seconds.		There is a measurement device present at revspace (above the green tool board). It sends frequency data to the revspace MQTT server once every 5 seconds.

	Processing of this data into something that our grafana can display is unfortunately broken (is that documented somewhere anyway!?)		Processing of this data into something that our grafana can display is unfortunately broken (is that documented somewhere anyway!?), see:
			https://revspace.nl/grafiekjes/d/3deykmVmz/power?orgId=1&refresh=1m

	You can watch the data (using mosquitto for example):		You can watch the data (using mosquitto for example):

2023-08-25T21:06:18Z

Integration into revspace sensor infrastructure

← Older revision		Revision as of 21:06, 25 August 2023
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	Processing of this data into something that our grafana can display is unfortunately broken (is that documented somewhere anyway!?)		Processing of this data into something that our grafana can display is unfortunately broken (is that documented somewhere anyway!?)

	You can watch ~~this yourself~~ using (for example):		You can watch the data (using mosquitto for example):
	mosquitto_sub -h revspace.nl -t revspace/sensors/ac/frequency -v		mosquitto_sub -h revspace.nl -t revspace/sensors/ac/frequency -v
	Example data:		Example data: