Esp32 ct clamp. Please also see this guide as an introduction to the working principle of CT clamp sensors and how to hook them up to your device. it can easy integrate to home assistant by ESPHome. Price 200 + 12 USD shipping to EU. Sep 23, 2024 · MachineQ has recently introduced MQpower CT, a self-powered, IoT-enabled, LoRa CT clamp designed to monitor real-time current consumption. (Ex. 012. Aug 2, 2023 · ⚡ Power meter with ESP32 and ESPHome With the price of electricity at an all-time high, and the forecast for continued increases, we believe it is necessary to have a way to measure electricity … ATM90E32 Power Sensor The atm90e32 sensor platform allows you to use your ATM90E32 voltage/current and power sensors (datasheet) with ESPHome. Ct clamp for home assistant with esp32. I see phantom negative consumption and am trying to track down where it substitutions: friendly_name: "CT clamp" friendly_id: "ctclamp" packages: device_base: !include device_base_esp32. It had a few recommended methods for monitoring power, being: * A data protocol on meters that seem based primarily in Netherlands, Belgium and Luxembourg. The SCT-013 is convenient to use, as it can be easily attached to either the live or neutral wire without any electrical work involving high Sep 18, 2023 · The problem Setting up 2 ADS1115 with 4 ct clamps sensors each, and using continuous_mode: on gives one sensor with wrong value. Apr 21, 2022 · I have a circuit as per the diagram in the image. How the Circuit Works AC Signal Processing: The CT sensor outputs an AC voltage signal proportional to the measured current. You Tax excluded, add at checkout if applicableKincony KC868-M16 ESP32 16 Channel CT Clamp Energy Monitor no APP control For esphome home assistant KinCony M16 Ethernet+ESP32+SD Card CT Clamp Energy Monitor for ESPHome. Appreciate your help. The CT clamp has quite a long wire which can be connected to the module with its connector. 3D Files Firmware Notes MLP201191 - ESP32 S2 4-Channel Mains Power Sensor A prototype for a new 4 channel CT board using an ESP32 (Wemos ESP32 S2) Hi guys, Would you know someone to send me a schematic for 3 CT Clamp sct-013 100A 50mA, I have esp32, ct clamp, resistor 10K, capacitor 10uF 35V, and AC-DC 5V 750mA I hope that all for make current Amper Voltage sensor, if I still miss something please write to me, thank you. I am going to use an Azdelivery esp32 devkit c4, it claims to have 16 ADC Can i attach up to 16 ct clamp? in emontx i see they do not attach more than 4 clamps, is it only due to the lack of multiple adc? i’ve built a prototype on a breadboard with one clamp. By implementing such a system, individuals and businesses can gain insights into their energy consumption patterns and make informed decisions to optimize their energy usage. All the ESP's have to do is wait for a +ve going zero-crossover point, then after a delay start to generate the waveforms, that generates your in-phase CT signal. Ethernet+RS485+4G modbus 30CH high-accuracy energy meter ic-BL0910 with CT clamp. 1 volts on the middle connection. I based my circuit on this thread: Esphome ct clamp 30A/1V and created four of these on a protoboard. (Espressif Oct 6, 2021 · Within the last couple of months the Home Automation Software I use, Home Assistant (HASSIO) has added some new Energy monitoring features which look really handy. we have 2 sensors defined: ct_clamp and adc the adc sensor reads raw voltage on GPIO34 every (default) stretch of time, looks like every 60 seconds? We can access this reading via the ‘adc_sensor’ id. Oct 4, 2021 · With a customised clampable extension lead, an accurate plug in power monitor and an oscilloscope, I was able to measure the AC voltage coming out of the clamp. 5V, which is expected (due to voltage divider and shifting the sine wave up above 0V). It includes in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management I went the CT clamp/ESP32 route for my clothes dryer power needs. Feb 25, 2021 · Hey everyone, I am currently trying to get a CT Clamp (SCT013-030) with a Wemos D1 Mini to work. Try EmonLib-ESP32 which fix the library and make it works for ESP32. I am supplying the 5v input from a power supply and can guarantee a stable Hello, I am trying to measure current on some of my devices like washing machine, air conditioner to automate stuffs on my Home Assistant. 5 = 1. Home Energy Monitor CT CLAMPS, EspHome, ESP32, CT CLAMP. The analog output is designed to be compatible with 3V3/5V micro-controller. The ADC can’t measure negative voltages, Tom explained it with images above. I kept the burden resistor as the two l… Nov 15, 2022 · Setup - Home Assistant on Docker (Raspberry Pi), D1 Mini flashed with ESPHOME, MottramLabs 4 channel ADS1115 and 4x CT013 Clamps ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. 2kW kettle, and it measured 23 volts on the tip and 2. 9-inch e-paper display designed to measure power consumption through up to six CT clamps, or Current Transformer clamps, that are each attached to one of the AC lines of a house or appliance. May 1, 2025 · Seeed Studio’s XIAO 2-channel Wi-Fi AC Energy Meter is an ESP32-C6 (XIAO ESP32-C6) powered power meter with two independent CT clamp (Current Transformer clamp) connectors to safely measure power consumption when placed around one of the wires from an AC cable. Meaning: no wire-cutting and not putting a meter between every socket and light bulb. It is ESP32 based. I used an MT87 Digital Clamp Multimeter ESP32 + Current Transformer (CT) clamps power measuring using ESPHome This is the way I have used ESPHome with rather inexpensive hardware and some soldering iron to monitor instantaneous power consumption (and hence, cumulative energy usage) for 8 of my home electrical circuits (plus some others indirectly), which I feed to Home Assistant (and Aug 27, 2022 · Build your own CT Clamp Power and Energy Monitor with ESPHome Speak to the Geek 17. The attached is my thoughts. the hardware have 16CH CT Clamp sensor INPUT ports + 3CH ZMPT101B voltage sensor + SHT30 temperature & humidity sensor + Ethernet POE+ WiFi + Bluetooth + CT clamp sump pump monitor using ESP32. I am measuring 0 Oct 6, 2024 · Resistors create a voltage divider of half, so 3. Apr 15, 2019 · Introducing the CircuitSetup Expandable 6 Channel Energy Meter – the ultimate tool for monitoring and analyzing energy consumption in your home or workspace. This type of current sensor is commonly known as a current transformer (CT) and is used for measuring alternating current in a building. You can write your own code, but could also use what they provide. Integration completed to Home Assistant using API from esphome. Jul 28, 2024 · OVERVIEW This is a hardware and software project, where: while the hardware is pretty standard (ESP32 and a few common components), the software is completely based on ESPHome and Home Assistant. Anyone using these with an ESP32? Thanks! Simply clamp the AC transformer probe on the AC line, and then plug the 3. Jul 27, 2019 · These little devices clamp over an AC wire and detect how much current is passing through it via induction. 012 -> 0 - 0. 9. Find more , and products. Gave up and Mar 20, 2024 · SONOFF POW Ring Review – A WiFi CT Clamp power meter tested with eWelink and Home Assistant The trend of measuring the energy usage of household electrical devices has become increasingly popular among Smart Home users in the past few years. I am facing issue in the setup of this CT Clamp 50A/1V. And you can do it too! This was built using ESP32, Arduino, CT sensor, Emonlib, resis May 27, 2022 · Hi, I have an ESP 32 and 3 CT clamps for my 3 phases at home (Europe). The ATM90E26 IC measures a A 4-Channel mains sensor using an ESP32 two board versions one using a Wemos ESP32 the other uses a Node-MCU board. ESPHome configuration and steps used to created energy montiroing boards using an ESP32 chip with a energy board capable of reading 6 CT Clamps across 6 circuits. 12, with the current clamp unplugged, so just across the load resistor I still get readings from 0. You can measure varying voltage levels between 0 V and 3. Many thanks in advance. Jan 7, 2024 · J. Where I can monitor my electricity and have data running in my Home Assistant. 5mm plug. 65V. Perhaps this is one of your solar inverter cables, or the main meter tail in your meter box. Looking for a good deal on esp32 with ct clamp? Explore a wide range of the best esp32 with ct clamp on AliExpress to find one that suits you! Besides good quality brands, you’ll also find plenty of discounts when you shop for esp32 with ct clamp during big sales. The ESP32 is needed for the 3 sensor version, but for a 1 sensor version, an ESP8266 will also work. Try inverting the clamp direction in the wire. Jun 22, 2023 · IPEC is an IoT Power Energy Monitor and Controller. As you can see from the serial logs, the voltage being received seems to be roaming / drifting and I’m not sure how to keep reasonably accurate measures. the hard ESP32 + Current Transformer (CT) clamps power measuring using ESPHome This is the way I have used ESPHome with rather inexpensive hardware and some soldering iron to monitor instantaneous power consumption (and hence, cumulative energy usage) for 8 of my home electrical circuits (plus some others indirectly), which I feed to Home Assistant (and 5. Looking at the raw voltages returned from the ADC when I turn on a test load they We have designed KC868-M16v2 (ESP32 16 Channel CT Clamp Energy Monitor) home assistant plugin files. 07 and 0. 3V We have designed 30 Channel ESP32 energy monitor open source board – M30 (ESP32 30 Channel CT Clamp Energy Monitor) for home automation DIYer. Mar 14, 2024 · SONOFF POW Ring smart power meter is the first CT clamp-based WiFi power meter from ITEAD. This project is suitable for anyone who has one of these Efergy units lying around or wants to integrate a CT clamp sensor with ESPHome. But I am not sure which CT sensor I should use for my ESP8266: one with integrated burden resistor which then outputs 1V at 20A (if I understand the specification correctly). any feedback would be greatly appreciated Two 100A CT clamps hooked up to mains to measure current, with an AC-AC transformer to measure voltage, all connected to Arduino Uno for fast ADC, using EmonlibCM, transmitting to ESP32 via serial Jul 27, 2025 · A compact, dual-channel AC energy meter based on the ESP32-C6. It includes in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules as well. Contribute to gnlgrim/Ctclamphomeassistant development by creating an account on GitHub. 3v/2). Am I right in assuming that I will probably Mar 4, 2022 · Learn how to build a smart IoT-based energy monitoring device to see real-time energy usage right on your smartphone. I've managed to attach an ESP32 to the Modbus of the inverter and Using a CT clamp sensor Current transformer (CT) clamp sensors measure your energy usage by looking at the current passing through an electrical wire. Feb 26, 2020 · I am trying to connect my CT Clamp to my NodeMcu Amica using the CT Clamp ESPhome Integration. 3v and ground and then another lead to a GPIO ADC port on the ESP32 and seem to be getting a “raw current” reading that does alter with AC current through the CT-clamped live cable. 5mm socket on the bottom of the module. In Home Assistant we have support for off-the-shelf CT clamp sensors or you can build your own. Following CT Clamp Current Sensor — ESPHome, this is my config: sensor: - platform: ct_clamp sensor: adc_sensor_i1 name: "I_ph1" id: … Jul 20, 2023 · We have designed KC868-M16v2 new version (ESP32 16 Channel CT Clamp Energy Monitor) for home automation DIYer. This cutting-edge meter provides … Jul 12, 2024 · The Tasmota feature for analog CT energy monitoring is only for the on-chip ADC of ESP8266 and ESP32. Don’t forget one crucial step - filter for items that offer bonus perks like free shipping & free return to make the most of Feb 27, 2025 · Can you also explain the relationship between all of the different things happening? I am trying to learn ESPhome, I am very new to it. The reference voltage used internally by ESP32 ADCs for measuring the input voltage. Based on the info on their website they use ESP Home which works with HA. The SCT-013 is convenient to use, as it can be easily attached to either the live or neutral wire without any electrical work involving high Jan 10, 2024 · Emporia Vue Gen 2 "whole house" energy monitor ships with 16x 50A CT clamps, 2x 200A sensors, and supports single and three-phase power. Find this and other hardware projects on Hackster. Jun 25, 2023 · To achieve surplus charging Zappi ships three CT clamps, that have to be installed after the electricity meter. ATM90E26 Power Sensor The atm90e26 sensor platform allows you to use your ATM90E26 voltage/current and power sensors (datasheet) with ESPHome. I am quite certain that nothing has changed in terms of the 'hardware' I am using. 3 V. Initial plan was to use a ESP32 with its 6 built-in 12-bit ADCs channels / pins to measure AC current through CT clamps (with 0 - 1 V output voltage). Instead of using the Arduino Nano you can also use Arduino Uno. the hardware have 16CH CT Clamp sensor INPUT ports + 3CH ZMPT101B voltage sensor + SHT30 temperature & humidity sensor + Ethernet POE+ WiFi + Bluetooth + DS3231 RTC module + SSD1306 I2C LCD display + SD card. In this article, we will explore an IoT-based energy monitoring system that utilizes the ESP32 microcontroller and CT sensor to track and analyze energy usage in real time. The inverter has already installed a smart meter at the exact same position. 65V but stays within 0V-3. ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. To be in reasonable price. the hardware have 16CH CT Clamp sensor INPUT ports + 3CH analog input + Ethernet + WiFi + Bluetooth + DS3231 RTC module + SSD1306 I2C LCD display + SD card. The main board includes a buck PCBWay Supports High Precision Advanced PCBs: https://www. It is designed for installation in an electric cabinet to measure whole-house power consumption with up to 100A current. Contribute to m1i1k/esp32-ct-sensor-monitor development by creating an account on GitHub. The sensor easily clamps around the current flow wire: May 4, 2025 - We have designed KC868-M16 (ESP32 16 Channel CT Clamp Energy Monitor) for home automation DIYer. Anyone using it can please give me some ideas? I am trying every possible video on YouTube but failed to get the results. Reply reply PapaLanc • Dec 24, 2022 · Voltage and current are displayed but the power is incorrect or the power factor is too low: Double check the CT clamp connections. io. I have connected 3. Communication with the device is done via an SPI bus, so you need to have an spi: entry in your configuration with both mosi_pin and miso_pin set. To do this, I would now use a CT sensor for each phase via ESPHome. Oct 8, 2024 · Hi, I'm tryninig to setup an mqtt energy meter with CT clamps by using emonlib on esp32 Node-MCU (datasheet in attachment). PREREQUISITES A) In addition to knowing something about ESPHome, to build this The new CT Clamp sensor in ESPHome makes this easy. In the unlikely case you don't know what they are, i strongly suggest to follow the links and study them a little. Nov 10, 2022 · GTEM started life a couple of years ago using an ESP8266, CT Clamp and Domoticz. The ESP32 has only 2 DAC. Which ones should I be using? I clamped it around a wire feeding a 2. In ct Energy Tracking with ESP32 CT Clamp Sensor from an Efergy elite Share your Projects! Home Assistant Community, Efergy Elite Wireless Energy Monitor provides the user with second increment updates so you can instantly see the impact of turning your light on or Jan 21, 2024 · There are many ways to create the CT currents, I suspect it will come down to the easiest to implement. Mar 19, 2022 · This post provides high-level information about home energy monitoring using esp-32 with CT & Voltage Sensors. (See the image of the first prototype below). Problem: With the basic installation, I can manage to surplus charging, but the house battery will be always prioritized. Dual core ESP32 inside! Mar 24, 2022 · The diagram and circuit you see here only works well on ESP32. We have designed KC868-M16v2 new version (ESP32 16 Channel CT Clamp Energy Monitor) for home automation DIYer. After my Efergy Elite monitor stopped working, I decided to reuse the CT clamp to add energy tracking directly into Home Assistant, using an ESP32 and ESPHome. I’ve got several problems offsetting to zero values when no current Sep 21, 2024 · Arduino Home Energy Monitor using CT Clamp Current Sensor & ZMPT101B AC Voltage Sensor- In this article, you will learn how to make Arduino Home Energy Monitor using CT Clamp Current Sensor, ZMPT101B AC voltage Sensor, and an SSD1306 I2C supported Oled display module. For those of you that have also made these, will have found that they work OK to give Power Consumption but lack the Import (Active) /Export (Re-Active), and Power Factor information. 3V, as if whatever it is has full on Jun 30, 2025 · SONOFF POW Ring (POWCT) Smart Power Meter Features ESP32 MCU and Split-Core CT Clamp for 100A Energy Monitoring In the past few years, SONOFF has become a trendsetter among Smart Home users for effortlessly monitoring the energy usage of household electrical devices. So far so good. I got mine from Amazon and it just plugs into the 3. Much like our Split Single Phase Energy Meter, the 6 channel uses current transformers and an AC transformer to measure voltage and power the board(s)/ESP32. Boards seems not reading properly analog pins while wifi is activie even though I'm using ADC1 pins (GPIO 32,33,34,35). Aug 1, 2019 · So I decided to build my own with an ESP32 and the SCT-013 sensor. It includes in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management I took an ESP32 and a CT sensor to build an energy monitor for my home. With no current flowing I get a varying reading of between about 0. I now understand that the burden resistor is there to convert Smart Home Automation Forum › Technical Support › NewsKC868-M16 16CH CT Clamp Energy Monitor Board Released Sep 21, 2024 · Arduino Split Core Current Transformer: Measure current with Arduino Split Core Current Transformer CT Clamp Current Sensor Arduino- In this article, you will learn how to measure AC current with Arduino using a Split Core Current Transformer or CT Clamp Current Sensor which I recently got from the DFRobot. For the cost of 3x ESP32 it greatly simplifies the implementation. We can calculate power factor, real power and apparent power values using the measured current, RMS voltage values and Aug 15, 2022 · I built a 4-channel home energy monitor using an esp32 and some CT clamps. Archived post. 65V is now acting as 0, bias - 1V = 0. 3 * . We have designed 30 Channel ESP32 energy monitor open source board – M30 (ESP32 30 Channel CT Clamp Energy Monitor) for home automation DIYer. Jun 6, 2024 · Principle Behind Smart Energy Monitoring System In this project, the SCT-013 current (CT) sensor is used for single-phase current measurement, and a 9V AC step-down transformer is used to measure the RMS value of the voltage. 65V and bias + 1V = 2. I don’t under stand how the pin ties to the CT Clamp. On the board we also have a small isolation transformer that makes it possible to safely measure mains voltage, and another CT clamp to measure current on a second circuit, although we will not use it for this project. The setup uses a SCT-013 non invasive current sensor, connected to an ESP32 and an electrical outlet to read and send the data through Wi-Fi and MQTT. This sensor is commonly found in CircuitSetup 2 and 6 channel energy meters and the Gelidus Research 2 channel power meter. The burden resistor converts current to voltage. 3, but after compiling the same YAML file with 2021. I went through a process to get mine working reasonably accurately Measured output of the sensor across a range of loads with a good multimeter Realised the output was nowhere near linear at the bottom end Found that the ADC on ESPs are not that linear either Spent a huge amount of time playing with the ADC parameters of an ESP32 and building offset tables to straighten the curves. The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. The signal oscillates above and below 1. 10, the adc sensor is reading properly, but the ct_clamp isn't getting any d In my previous Arduino Home Energy Monitor based video, I explained in detail how to calibrate the ZMPT101b AC voltage Sensor, and how to calibrate the CT Clamp Current Sensor. A range of Interface boards for use with CT clamps to measure mains current. The capacitor is used as a decoupling capacitor to filter out any HF noise I'm trying to connect two ct clamps to a esp32 via an ads1115 with a common voltage reference that is offset by way of a voltage divider. Could issue be associated with the esp32 Node-MCU board model? Are there more suitable models Feb 1, 2023 · Why do you need two channels for one breaker? Isn't back feed = -feed? I don't think you're going to find anything much cheaper than an ESP32 and a CT clamp: ADS1115 4-Channel 16-Bit A/D Converter Component/Hub The ads1115 domain creates a global hub so that you can later create individual sensors using the ADS1115 Sensor Platform. Aguado’s “Smart Powermeter” is an ESP32-S2 board with a 2. 🫡🫡 Feb 26, 2025 · Hi all, I am trying to detect when an appliance is on/off by using a 30A/1V CT Clamp (it has a built in 82 Ohm burden resistor). Note if you clamp the both wires you will not measure anything as the current flow from one wire will neutralize the current flow from the other wire and the sum will be always 0. My very own Fitbit for electricity consumption! Goal Before jumping in, I set myself these goals for the project: Make a non-invasive energy monitor for the entire apartment. ADC Reading: The ESP32 reads the biased AC signal. The hardware have 30CH CT Clamp sensor INPUT ports + 3CH ZMPT101B voltage sensor + SD card + 30CH RGB colorful LED for current value. The hardware h Nov 11, 2021 · The problem I have a split-core current clamp attached to an ESP32 that was working fine with version 2021. I am considering going with Esp32 and CT sensor Clamp since Sense Energy is expensive. it can easy integrate to home assistant and tuya app by Jul 3, 2023 · You could set up one esp32 as a server with the ct clamps attached to its analog input. I am using the ct clamp SCT013 20a/1v (with internal burden sensor). yaml sensor: - platform: ct_clamp sensor: adc_sensor name: "Measured Current" id: current sample_duration: 600ms update_interval: 3000ms filters: - calibrate_linear: - 0. Jul 7, 2019 · The other important part is the CT sensor (Current Transformer). com/ This pcb uses an op amp to interface the SCT-013 current transformer with an ESP8266 on a WeMos CT clamp sump pump monitor using ESP32. But I use it to check if the sprinkler pump is runnig, by measuring the current > 1A To “calibrate” you need to compare the load with KC868-M16V2 ESP32 16 Channel CT Clamp Energy Monitor for ESPHome Home Assistant Sep 29, 2015 · All you have to do is to clamp the current sensor around one of the wires where the current flows. We have designed 30 Channel ESP32 energy monitor open source board - M30 (ESP32 30 Channel CT Clamp Energy Monitor) for home automation DIYer. the hard Oct 21, 2024 · I purchased this Non-Invasive Current Sensor - 30A: I am making this energy tracker with esp32: Diagram: The CT current sensor has three positions on the 3. Is there any way to read negative currents? I’m wanting to use 2 clamps - one to read solar production (always positive or 0) and the other to measure if power is flowing into or out from the grid (could be positive or negative). I’ll probably post it in another place when I can identify one… I’m using the six channel board available through CircuitSetup but posting here because I suspect a lot of CircuitSetup boards wind up in Home Assistant installations. The voltage divider shifts the signal to center it around 1. New comments cannot be posted and votes cannot be cast. The hardware h Jul 26, 2021 · Your R2 doesn't seems to be connect to the mid-point. tax/Import Duty) They sell clamps for Tax excluded, add at checkout if applicableKincony KC868-M16 ESP32 16 Channel CT Clamp Energy Monitor no APP control For esphome home assistant Jan 20, 2024 · I'm not sure what function U2 is providing, it could be omitted. These two sensors are connected to the ESP32 board. Feb 12, 2023 · The SCT-013 is a non-invasive split-core type clamp meter sensor designed to measure AC current up to 100 amperes. It based on ESP32-S3-WROOM-1U (N16R8) wifi chip. We have designed KC868-M16 (ESP32 16 Channel CT Clamp Energy Monitor) for home automation DIYer. I have tried 2 Sep 21, 2024 · IoT based Smart Energy Meter: IoT based Smart Energy Meter using ESP32 & Google Sheet or Google Spreadsheet- In today’s article, you will learn how to make an IoT based Smart Energy Meter using ESP32 WiFi + Bluetooth module, the ZMPT101b AC Voltage Sensor, The DFrobot CT Clamp Current Sensor, And the Google Sheet or Google spreadsheet as the IoT platform for the real-time monitoring and data Arduino Home Energy Monitor using CT Clamp Current Sensor & ZMPT101B AC Voltage SensorIn today’s episode, you will learn how to make Arduino Home Energy Moni The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. Bias is used so you can measure the full -1V - +1V AC swing of the CT clamp, basically 1. This CT clamp can measure both accumulated (Ah) and instantaneous current(A) with loads up to 100A and 250A with 1mA resolution. 6K subscribers Subscribe Aug 27, 2022 · You also need a CT clamp – the Mottram Labs module has been designed to work with the SCT-013-000 clamp. Sep 20, 2022 · Hi, I would like to be able to measure the power consumption of my heat pump separately in Homeassistant. With continuous_mode on, one random sensor will show a value on a se Sep 16, 2023 · I’m looking at getting my hands on a few of these SCT-013 current sensor clamps My question is, how much modification is required to integrate this with an ESP32 and esphome? Voltage deviders etc? Also, if voltage deviders are required, do they need to be altered with each different current measurement? eg, 20A 50A 100A etc. 0 - platform: adc pin: GPIO32 id: adc_sensor attenuation: 11db # update_interval: never ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. Hi guys, i have question I don't know if I involved it well, im using this scheme on photo, resistor 10K and capacitor 10uF 35V, i use 3 ct clamps, please really normal advice I have asked someone many times and no one advised me, thank you. This is my current thinking: Your plan is to input a new CT signal We have designed 30 Channel ESP32 energy monitor open source board – M30 (ESP32 30 Channel CT Clamp Energy Monitor) for home automation DIYer. Jun 13, 2021 · I am 99% certain I was able to successfully use the ESPHome CT Clamp Current Sensor about a year ago. Here is my understanding, please correct/add. But when I connect anything, it just maxes out at 3. Aug 27, 2022 · The best way to calibrate it is to attach the clamp around a cable with a known current running through it. I am interested in making something like Sense Energy. It features Wi-Fi 6, uses two 100A CT clamps, and comes pre-flashed with ESPHome for easy Home Assistant integration. pcbway. Contribute to guido57/ESP32-power-meter development by creating an account on GitHub. Emonlib works fine without wifi (basic example sketch). To use this hub, first setup the I²C Bus and connect the sensor to the pins specified there. G. I’m also seeing quite a few negative values. Also the library you are using EmoLib doesn't work for ESP32 as the formula and assumptions it used in the library is wrong for ESP32. 025 -> 1. Oct 11, 2019 · How do I setup multiple CT Clamps on the esp32 board? I see in the example there is only one. This sensor clamps over the main cable in your house and transforms the magnetic field around the cable into a voltage. The power meter relies on an ESP32 microcontroller for control and wireless connectivity Mar 6, 2025 · The SCT-013 is a non-invasive split-core type clamp meter sensor designed to measure AC current up to 100 amperes. 65V ish for a biased input. the hard I’ve just set up the ct clamp sensor and everything seems to be working fine. This sensor is found in the DitroniX GTEM ESP32 energy meter and other devices. Aug 30, 2022 · Hi I would like emulate the current output of a CT clamp using an Arduino in the simplest way possible. Additionally, it integrates a The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. # Example configuration entry sensor: - platform: ct_clamp sensor: adc_sensor name: "Measured Current" update_interval: 60s # Example source sensor - platform: adc pin: A0 id: adc_sensor I am having limited success and non-linear readings. 05A. 3 Phase, or 3 x Single Phase with DAC/PWM/MPWM/MPPT/I2C Expansion Port Outputs. I found the MCP4725 Breakout Board but my understanding of AC current generation is poor and I'd like some advice. The ESP32 ADCs can measure analog voltages from 0 V to Vref (3. I am using a 100A/50mA clamp with a Mottramlabs current load resistor of 22ohms (10k dividers and capacitor to give 1. Communication with the device is done via an SPI bus, so you need to have an spi: entry in your configuration with both mosi_pin This is all about the Tuya Zigbee Bidirectional CT Clamp Energy monitoring meter, explaining where to purchase it, the cost, integrating it in Home Assistant Integrating simple energy monitoring into Home Assistant using a Wemos D1 mini and a clamp sensor, with a brilliant PCB in between. Oct 8, 2024 · Hi All, I recently found this online: 30 Channel ESP32 energy monitor board – M30 A brand called Kincony selling a 3-Phase, 10 clamps each, energy monitor. I created a voltage divider circuit: When nothing is connected I get a raw value of about 1. In his case, he used a YHDC SCT-013-030 sensor that can measure up to 30 amps and costs We have designed KC868-M16 (ESP32 16 Channel CT Clamp Energy Monitor) for home automation DIYer. We reviewed the SONOFF POW Ring Smart House System To monitor the 240 AC Current Consumption using ESP32 and CT clampmore Jul 25, 2023 · We have designed KC868-M16v2 new version (ESP32 16 Channel CT Clamp Energy Monitor) for home automation DIYer. 005 to 0. Easily ask your LLM code questions about Feb 27, 2025 · I have CT clamps around both sides of my split-single-phase US residential service. First, you need to set up a voltage sensor source (ADC sensor, but for example also ADS1115) and pass it to the CT clamp sensor with the sensor option. The microcontroller takes measurements every 5 minutes and transforms the sensor value in mA to Jun 11, 2025 - We have designed KC868-M16 (ESP32 16 Channel CT Clamp Energy Monitor) for home automation DIYer. it can easy integrate to home Aug 16, 2025 · We have designed 60 Channel ESP32 energy monitor board – N60 (ESP32 30 Channel CT Clamp Energy Monitor) for home automation project. I have set up the following circuit on a breadboard to get some test results: Unfortunately i am always getting 1,643V … Apr 4, 2020 · I want to use my nodemcu for power monitoring and found that CT Clamps can be used with esphome. It was a fun, cheap little project and wasn't difficult. 65v mid point). This makes it possible to calculate the energy usage. - esphome/esphome Feb 16, 2021 · I’m using ZMCT103C currently with an esp32 and this code example: sensor: - platform: ct_clamp sensor: adc_sensor name: "Measured Current" update_interval: 2s - platform: adc pin: 35 id: adc_sensor This is not so accurate and at 0 load is measuring 0. We have received the new SONOFF POW Ring Smart Power Meter Switch device for review from ITEAD. Then also use another esp32 as a client connected to the two inverters through an analog output. The Expandable 6 Channel ESP32 Energy Meter can read 6 current channels and 2 voltage channels at a time. Both boards can work with either a current or voltage type of CT's (current transformers). Wemos D1 Mini: https://am Mar 28, 2022 · Hi all, i’m going to build an energy monitor for my house. it can easy integrate to home assistant by ESP Does anyone have any recommended CT clamps for an ESP8266/ESP32? We have a motion sensor in the bathroom and that works, but sometimes the shower gets foggy enough that the motion sensor fails to pick people up. The analog input pins of ESP32 have 12-bit resolution. The capacitor smooths noise. 5mm headphone jack into the signal conversion module to read the current AC current value. ESP32 + CT sensor Clamp - (Newbie home Electricity monitoring) HI, I am new to this. The ESP32 could easily do all you need, including generation of a variable sine wave from its DAC (See my Tech Note 071 - ESP32 Digital to Analogue Converter ) which shows its cable of generating a low distortion sine wave up to 160Hz, so plenty of CPU capacity. Buy KC868-M16v2 ESP32-32UE Ct Clamp Energy Meter Power Monitor RJ45/WiFi ESPHome Tasmota Arduino IDE SD Card SSD1306 IIC RTC Module at Aliexpress for . The CT clamp I'm trying to emulate is a "TOP 90-S10/SP4" Primary involved potential: 1000V AC/DC Primary current: 0-90A Output current: 0-90mA The physical clamp would normally Mar 14, 2024 · Emporia Vue Gen 3 Whole Home Power Monitoring is Compatible with ESPHome & Home Assistant for local control, open source power monitoring off all your circuits in the home. You will find list of materials to read about and my project code as well. Jun 24, 2023 · I am wanting to use a Mottramlabs current sensing board (201083 designed for an ESP8266) with an ESP32 (as I also need a second ADC for an oil tank depth sensor) boards. Sep 20, 2020 · An addendum to my previous project on how I now monitor my 240V electric dryer with a CT clamp instead of using a vibration sensor Jan 15, 2023 · I am trying to set up a ct_clamp for current reading. Right now i am struggling finding cheap ct clamps that will work… Whould these, for example, work?: Thanks 🙂 ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. hsixujm pklr uwwjuoa xrhcd vjnwon yghu gkhbvi zrhj sbuxyz kzuiuj