Tasmota compatible plugins have been developed by macwyznawca and arachnetech as well as others to add support for these devices in Apple's Home app and through iCloud for. The ESP32 bridged mode addresses frames between Serial to Serial2,. This is also mandatory for H-Bridge devices. In the picture below, notice the red jumper wire between IO0 and GND. painlessMesh Library. zohair7 May 20, 2021, 6:23am 1. non blocking API. 15) SetOption60 1. CMD DAC action; I2SGain: 0. 0. 0. temperature change >= 0. 9. 0. The CP2102 USB to UART Bridge provides a complete plug and play interface solution that includes royalty-free drivers. Basically all of them use the so-called "MiBeacons" which are BLE advertisement. WIFI bridge. . 那么必然要对硬件有一个编号，也就是同一串行线路上的硬件要有唯一的一个地址. . SiLabs CP2102 USB-to-UART bridge, "EN" and "BOOT" buttons, 3. After the circuit connections are completed connect the USB to RS-485 Module to the PC where the Modbus Slave Software is installed. This feature is included only in tasmota-sensors and tasmota32 binaries. 5 degrees)). A button to upload a file from the host (1st select the file with the Choose File button, then Start Upload)Tasmota is an open source firmware for Espressif ESP8266, ESP32, ESP32-S or ESP32-C3 chipset based devices created and maintained by Theo Arends. 5 and PM10 output. 4 can be used to build Zigbee devices. 2. We will create an example project by interfacing a RS485. have esp8266 as modbus RTU master against slave device connected to esp8266. The Best ESP32 Projects Overview. client esp8266 tcp server ascii esp32 modbus bridge rs485 linux-client rtu Goto Advanced Function and set to Slave and Modbus SN 01; Flash ESP32. The bridge updates the file as nodes come online (using the New Connection callback), and I can route messages/commands to the desired node(s) by. In the Configuration -> Configure Module page, select Module Type: "18 Generic". For example, the TCP server on PC is 192. Simple example of using Arduino Ethernet library with ESP32 and W5500 to send messages to TCP server. - GitHub - emelianov/modbus-esp8266: Most complete. pdf. From the beginning of PDAControl we have carried out tests with the Emoncms platform, the Openenergymonitor project, initial tests with the esp8266-01 in 2014 have brought us to 2021 and the ESP32 module. It has to read and write registers. “painlessMesh is a true ad-hoc network, meaning that no-planning, central controller, or router is required. ESP 8266 - 01 Bridge Modbus RTU Slave - Modbus TCP IP Slave. USB 2. Hope this is the correct place. Tuya-Convert is the most successful method of flashing Tuya modules without opening the device and soldering. The ESP USB Bridge is an ESP-IDF project utilizing an ESP32-S2 or an ESP32-S3 chip to create a bridge between a computer (PC) and a target microcontroller (MCU). Home Assistant is an open source home automation solution that puts local control and privacy first. ModbusRTU, ModbusTCP and ModbusTCP Security. To associate your repository with the modbus-tcp topic, visit your repo's landing page and select "manage topics. Data source is a controller for an electric wall charger (with modbus 485). The API functions below provide common functionality to setup Modbus stack for slave and master implementation accordingly. 3. Most complete Modbus library for Arduino. g. If you observe this issue, you will need to unplug the CH340 from your USB port, restart the computer, and follow the steps below to reinstall the latest drivers. Open your Arduini IDE and go to File > new and create a new sketch. Open your Arduini IDE and go to File > new and create a new sketch. h : #ifndef USE_KNX #define USE_KNX // Enable KNX IP Protocol. microSD card slot. 7. I need to run RTU + TCP modbus master at the same time on my device. It has to read and write registers. Learn communication between two ESP32 via WiFi, how to connect two ESP32 via Internet, how to connect two ESP32 wired or wireless, how to control LED on an ESP32 by a button in other ESP32. Watch the DC motor, You will see: DC motor is accelerated and spins at the maximum speed during 2 second. [中文] The Espressif ESP-Modbus Library (esp-modbus) supports Modbus communication in the networks based on RS485, Wi-Fi, and Ethernet interfaces. Add print statements to debug a script. you linked a tutorial which says. The ESP32 radio hardware is unchanged, but if you prefer just to build an internet bridge you may omit VS1053, LCD display and other internet radio goodies. See on_frame Trigger. 3. The W5500 chip is a Hardwired TCP/IP embedded Ethernet controller that provides an easier Internet connection to embedded systems. For the Add-On you require Home Assistant OS and a RS-485 adaptor to connect to your Sunsynk inverter. LCD screen. PC or MCU can connect with the ESP-IoT-Bridge device through multiple interfaces (USB/SPI/SDIO) to gain internet access. But I need to add it to the software via modbus over LAN/Wifi. 4 relay 10A output ports. Get the firmware package here. ESP32 Ethernet. "In this user guide for ESP32 board with Arduino IDE, we have demonstrated how we can read the data from Modbus RTU device on ESP32 ". Load the downloaded Tasmota firmware file tasmota. The sensors supported by Tasmota use BLE (Bluetooth Low Energy) to transmit the sensor data, but they differ in their accessibilities quite substantially. Before establishing communication, you need to set up the PLC to communicate using the MODBUS protocol. Grove TB6612FNG. PCA6416A I/O Expander. You signed in with another tab or window. connect unit to a PC with RS485 adapter and ensure you can communicate before moving it to ESP32. We will learn how door sensor works, how to connect door sensor to ESP32, how to program ESP32 step by step. _TCP in config. ESP32 is a Successor of popular ESP8266 Wi-Fi module, with many advanced features such as this module is a dual core 32-bit CPU with built-in Wi-Fi and dual-mode Bluetooth with sufficient amount of 30 I/O pins. g. Sprinkler. 4 digital input ports are isolated. The MicroPython script that follows configures ESP8266 as a TCP server. This is a quickstart to install the micropython-modbus library on a MicroPython. -, while the library will take care of the communication part. After compiling and flashing you will find a new entry in Tasmota webUI: Consoles - Manage File system. “192. Most complete Modbus protocol implementation for Arduino. Download modbus_mqtt_publisher. This example demonstrates how to interact with the onboard LED on the BE32-01. 5). Instead of LEDs, you can use this project to control DC motors or other actuators that require a PWM signal. Right away, we found it running at 915 MHz. Supports Modbus TCP Security for ESP8266/ESP32. PDAControl Present. Open the Terminal program by selecting Go > Applications. Provides 2cm to 300cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. I found an example for an ESP8266 on the internet: Reading a TUF-2000M Ultrasonic Flow Meter with an Arduino or ESP8266 and. After wiring a peripheral to GPIO17 (A0) pin you have to configure it in Configure Module:. ESP32-WROVER-E module. bin supports almost all protocols available in the IRremoteESP8266 library. ESP-Modbus. The RF Coexistence mentions a number of ESP32 menuconfig options none of which are configurable via the Arduino IDE. It also moves the Wi-Fi module to a separate PCB mounted on the main PCB. The register space supported by device is described in its protocol (memory map) provided with device. Once all the prerequisites are in place, compiling and uploading is one simple command. 1. The . Key Features: It supports industrial voltage levels up to 6 - 35Vdc. It has integrated 2. Stepper. It uses 2 PWM outputs to control the current sent to each polarity. (Dual-core capabilities). DC motor's direction. These circuits are often used in robotics and other applications to allow DC motors to run forwards or backwards. png","path":"Node-red/Screenshot. Use the command below from Terminal: - Windows OS: use ipconfig command - Linux/Mac OS: use ifconfig commandmodbus 可以在同一条线路上允许有多个硬件. Bluetooth Low Energy Sensors~ Different vendors offer Bluetooth solutions, mostly as part of the Xiaomi brand, often under the Mijia label. It can serve as a replacement for USB-to-UART chips (e. Furthermore, please link to the datasheet of. You connect the device to a ESP8266/ESP32 and Tasmota will bridge between serial and network. Modbus TCP server for ESP8266/ESP32 and Ethernet library ; Modbus TCP client for ESP8266/ESP32 and Ethernet library ; MODBUS/TCP Security server (ESP8266) ; MODBUS/TCP Security client (ESP8266/ESP32) ; Modbus functions supported: ; 0x01 - Read Coils ; 0x02 - Read Input Status (Read Discrete Inputs) ; 0x03 - Read Holding. This USB 2. Ah sorry. PCF8574 I/O Expander. Real bridge code should be a bit more complex (need to manage multiple separate push/pull calls to the same slave) Bridge assumed to be working in buffered mode (i. Default RX/TX pins for the TTL-RS485 communication are used from hardware-serial2 (check pinout of your esp32-board for UART2-TX and UART2-RX). Register table is here: Modbus RS485. The meaning of certain inverter registers depends on the inverter type. 2 Overview (click to enlarge) What You Need ESP32-Ethernet-Kit V1. This tutorial shows how to build an ESP32 web server that displays a web page with multiple sliders. Modbus Library for Arduino. Hello, I have a problem with ESP32. 5. See HC-SR04 Ultrasonic Sensor for more information. The Internet of Things with ESP32 -- the Wi-Fi and Bluetooth system on a chip! Features/Specs: Community: Readings/Videos:. 625°/64 in half-step mode. ESP32 + Modbus Meter PZEM-016 RS485 and Emoncms Platform # 001. A generic firmware for an ESP32 to be used as a Modbus TCP/IP gateway for any modbus RTU device. Name: fill in the name of the device, such as "modbus-tcp-1"; Plugin: select the plugin Modbus TCP from the drop-down box. espressif32. you poll modbus in a loop on one side, and "report by exception" to the MQTT side when something changes significantly (e. bin do not include the necessary driver. In this case you need a TRIAC and a zero-cross. Cut power from the device completely for 30 seconds. arduino esp8266 esp32 modbus solar renogy Updated Dec 18, 2022; C++; Tiggilyboo / vanny-hub Star 11. 1. Driver supports up to 4x MPR121 controllers (= 48 buttons per ESP8266). The most notable difference from V3 to V4 is the pinout arrangement. 625º = 64 steps in half-step mode. The mb_communication_info_t::ip_address is used to bind to this address and useless in this example. You signed out in another tab or window. An Espressif ESP-Modbus Library (esp-modbus) is a library to support Modbus communication in the networks based on RS485 or Ethernet interfaces. Is this bridge (RTU client => ESP32 BRIDGE => TCP server) correct for this. Additionally, there are some power-down options that can be configured to further reduce the power consumption. Connect ESP32 to the TCP server as a client over TCP. I'm trying to communicate over modbus with a ESP32-WROOM-32D but I keep getting crashes while trying to read it. First assign two GPIOs to ModBR Tx and ModBR Rx in the "Configure. import time import machine from be_helpers. 1 Ethernet LAN port for internet connection and modbus TCP / IP. I am looking forward to. There is no further configuration needed. Bridge Rectifier Modules. In this comprehensive tutorial, we will delve into the world of Modbus RTU RS485 protocol integration with the versatile ESP32 board, all within the familiar confines. Documentation: Real Implementation: Test 1: ESP32 Code Bridge Mode USB to Serial. Modbus TCP esp32 WiFi. Read/write the register outside of supported address space: the Modbus stack returns exception response back with the most significant bit set to 1 in the command field of PDU (0x80 + send command). ESP USB Bridge creates a composite USB. MAX6956 I/O expander - I²C Bus. Documentation (Wiki) for Tasmota. MAX485 TTL To RS485 >> DE >> GPIO32 of ESP32; MODBUS Pin Configuration & Initialization with STEP 7-200. ISP-IDF supports Modbus serial slave and master protocol stacks and provides modbus_controller interface API to interact with user application. The default WiFi access point name is “WIFI2ETH” and the default password is. A library that allows your Arduino board to communicate via Modbus protocol, acting as a master, slave or both. Modbus Controller ¶ The modbus. Documentation (Wiki) for Tasmota. ESP-Modbus component. It has to read and write registers. py to the device (refer previous lesson to check how to do that). 44 then this command would work: RgxPort tcp,8084,192. 168. Ethernet 100Mb interface. After Saving the settings, the WEMOS reboots with the Generic configuration. See the Berry cookbook for H-bridge control. yaml code. Let's start from the first step. Modbus RTU / RS485 to MQTT bridge for Solis Mini solar inverter. 2. Supports network transport (Modbus TCP) and Serial line/RS-485 (Modbus RTU). UFS in the Web GUI. This is quite a common pattern for "legacy" protocols. 4 posts • Page 1 of 1. Usage. The sensors supported by Tasmota use BLE (Bluetooth Low Energy) to transmit the sensor data, but they differ in their accessibilities quite substantially. Hi guys, i’m new in PlatformIO forum. ESP32 is a single 2. The register space supported by device is described in its protocol (memory map) provided with device. wire contains a reference to wire1 if the device was detected on I2C bus 1, a reference to wire2 if the device was detected on bus 2, or nil if the device was not detected, or if I2C index 58 was disabled through I2CEnable. Everything began as Sonoff-MQTT-OTA with a commit on 25th January 2016, by Theo Arends. The Modbus Bridge driver features 2 kind of bridges. To connect via TCP you need the Smart Dongle-WLAN-FE with the latest software update (SDongle_V100R001C00SPC120_package) To connect via RTU u need a usb to modbu… BridgeModbus. You signed in with another tab or window. Board: ESP32 Development Board ESP32 core: 1. 6 KB. Is this bridge (RTU client => ESP32 BRIDGE => TCP server) correct for this. 168. Connect the Modbus device to an ESP and Tasmota will create a bridge to the Modbus network. Computer running Windows, Linux, or macOS. This automation will be triggered when a CAN frame is received. Supports network transport (Modbus TCP) and Serial line/RS-485 (Modbus RTU). An Espressif ESP-Modbus Library (esp-modbus) is a library to support Modbus communication in the networks based on RS485, WiFi, Ethernet interfaces. Official Tasmota integration - preferred and automatic instant discovery of entities. Using the Peacefair PZEM-016 meter add an ESP32. When auto-phasing is enabled, you can use 2 consecutive PWM to drive a H-bridge siunce PWM phases don't overlap - under the condition that the sum of both PWM don't exceed 1023. This is my master init code: Code: [Select all] [Expand/Collapse] // Modbus master initialization. These circuits are often used in robotics and other applications to allow DC motors to run forwards or backwards. e. On the bus side, you need 120 Ohm termination resistors at the ends of the bus cable as per ModBUS standard. 1 channel lights are often white lights with On/Off controls and dimmer. An ESP32 has two or one Xtensa® 32-bit LX6 microprocessor (s) with clock frequency ranging from 80 MHz to 240 MHz. Sonoff Basic R3. Key features according to the manufacturer are: good sensitivity. The sensors supported by Tasmota use BLE (Bluetooth Low Energy) to transmit the sensor data, but they differ in their accessibilities quite substantially. You can skip the introduction sections and go directly to Section Start Application Development. Commonly used by the maker community for connected IoT projects, this chip is available on development boards of all popular maker platforms. If your inverter is not listed below, it. Step 4: Set up Modbus to MQTT converter. Modbus data mapping ¶ The following sections give an overview of how to use the ESP_Modbus component found under components/freemodbus. Physical connection between ESP32 and. only RS485 half duplex (optionally using a GPIO as RTS (DE/RS)) is implemented. Ethernet 100Mb interface. Learn: How to use ESP32 Modbus library, what is Modbus, why needs Modbus, how Modbus works, how many types of Modbus, and Modbus RTU/ASCII, Modbus TCP. • 1 × smartphone (Android 4. Just make sure to replace <port> with the actual serial port your device is connected to. Reload to refresh your session. 0. non-oxygen dependent. Using Arduino Networking, Protocols, and Devices. {"payload":{"allShortcutsEnabled":false,"fileTree":{"examples/Bridge/TCP-to-RTU-Simulator":{"items":[{"name":"TCP-to-RTU-Simulator. pyarchive below and unpack it. The library process a modbus configuration file in JSON format. Most complete Modbus library for Arduino. Arduino (with an ethernet shield and a cheap MAX485 module) can do the job! Change settings of your Arduino-based Modbus RTU to. USE_MODBUS_BRIDGE: The bridge can be used by commands in the console and via MQTT messages. 168. In Stock. Click Add Device to add a new device. 0-999. When the server is requested by a client, like a computer connected to the same WiFi connection, it returns an HTML page. DFRobot Aug 09 2017 3827. The apps usually show you the raw Modbus message sent as well as the sensors response. Serial flashing~ Like most devices, GPIO0 has to be held low during power up to get into flash mode. Pull requests. We connect Arduino pin 2 to a push button. Author: Andre Sarmento Barbosa, Alexander Emelianov. TCA9548A I²C. 1 RS485 port for Modbus RTU. It has 22 programmable GPIOs with support for ADC, SPI, UART, I2C, I2S, RMT, TWAI, and PWM. This is a video of the Johnson Street bridge in Victoria opening up for a tug and a Lafarge barge. Also works with ModBus Bridge <port>, [<ipaddress>] = Start listening to port. KEY. Here the steps to build your mesh ( we will cover each separately ): 1) build the mesh between nodes - easy. id (Required, ID): The ID to use for code generation, and for reference by dependent components. The device requesting the information is called the Modbus Master and the devices supplying information are Modbus. yaml; Connect your PC to the micro USB and run: esphome run deye-esp32-bridge. Step 4: Set up Modbus to MQTT converter. Process 16 buttons in web GUI. The following sections give an overview of how to use the ESP_Modbus component found under components/freemodbus. This feature is included only in tasmota32 and tasmota-zbbridge binaries. {"payload":{"allShortcutsEnabled":false,"fileTree":{"ESP32/main":{"items":[{"name":"CMakeLists. Traditional serial Modbus is a register-based protocol that defines message transactions that occur between master (s) and slave devices (multiple masters are allowed on using Modbus TCP/IP). The Modbus is a data communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). serial esp32 modbus mesh mcu modbus-rtu espnow node-espnow Updated Mar 22, 2021; C; jonshaw199 / af1 Star 4. All requests matching one of the registered. Industrial Integrations. Test 2: Modbus RTU simulator. The USB-RS485 dongle is very useful in these situations. IR Remote. ESP-Modbus. At a given time only one stream can be served, but multiple snapshots. Download modbus_mqtt_publisher. 3. Most complete Modbus library for Arduino. We tested the 433 MHz as well. ESP-MESH allows multiple devices (nodes) to communicate with each other. The message sent over the USB_RS485 should be returned back from ESP32 board (Refer to example configuration). It implements a number of features: transparent bridge between Wifi and serial, useful for debugging or inputting into a uCModbus Bridge ; OpenTherm ; RF Communication ; Serial to TCP Bridge ; Zigbee ; Smart Meter Interface ; Thermostat ; Timers ; TLS Secured MQTT ; TuyaMCU ; Universal File System ; Wi-Fi Range Extender ; Projects and Tutorials ; ESP32 ESP32 . Data bits: Data sent in frames on the Modbus network. Modbus Bridge ; OpenTherm ; RF Communication ; Serial to TCP Bridge ; Zigbee ; Smart Meter Interface ; Thermostat ; Timers ; TLS Secured MQTT ; TuyaMCU ; Universal File System ; Wi-Fi Range Extender ; Projects and. The server’s IP address is 192. Make sure that. Download USB to. Start the serial master and slave examples: examplesprotocolsmodbusserial* and make sure they can communicate each other. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Code Issues. 2 documentation » API Reference » Application Protocols » ESP-Modbus Edit on GitHub ESP-Modbus ¶. 168. I am implementing modbus master (RTU) and trying to read from Modbus Slave emulator tool. Command. Code Issues. pdf. The figure below illustrates an example mapping of a device’s data to the four types of registers. pinging Ethernet address showed that this is really cable connection (3ms rather than 100ms on wifi connection -. alhadi Posts: 15 Joined: Thu Apr 14, 2022 9:29 am. g. You switched accounts on another tab or window. Documentation (Wiki) for Tasmota. 4. Configuring ESP8266/ESP32 as a TCP server using sockets. 3. 100 = sets the volume of the audio signal: I2SPlay /file. 1 - ESP32 is TCP Server - Node-RED is TCP Client ESP32 is in server mode it will wait for connection, data (a “hello world” string) from client and then print this data to Terminal. This library implements the Modbus protocol over two different types of transport: serial communication over RS485 with RTU (Remote Terminal Unit) or Ethernet and WiFi communication with TCP protocol. The Johnson Street Bridge in Victoria, British Columbia is one of the city’s iconic landmarks. Components. This feature is included only in tasmota-sensors and tasmota32 binaries. On an ESP32, due to a different implementation, serial ports may not be used in conjunction with other Tasmota serial devices. @AbrarAliShahas per my first comment, your request is not valid Modbus RTU so I suspect the device will not respond even if the wiring is correct (but the docs are not poor so difficult to be sure!). Modbus Bridge. Bluetooth Low Energy Sensors~ Different vendors offer Bluetooth solutions, mostly as part of the Xiaomi brand, often under the Mijia label. 168. Sensors are read using the Modbus protocol and sent to a MQTT server. bin. Modbus allows communication among many devices connected to the same network, for example, a system that measures temperature and humidity and communicates the results to a computer. I connected a HW-097 module with jumper cables, similar to below image. To make sure the device is actually an MPU6886, we check its signature by reading register 0x75. The output is RS485 via RJ45. ESP32 Dual core, WiFi, BLE. Overview ESP32-Ethernet-Kit is an ESP32-based development board produced by. I've got two identical Growat inverters, so far I have hooked on up to a ESP32 with TTL converter and flashed the dev branch tasmota. ) Below are implementation notes to understand and. Each device should have a unique Topic. Could not load tags. modbus-esp8266. Nova PM Sensor SDS011 can measure the air quality very accurately by measuring air particles or dust based on laser detection. We will create an example project by interfacing a RS485 Modbus protocol based energy meter (DDM18SD) using MAX485 (TTL to RS485) module and collect current, voltage, and frequency data from the energy meter. My initial project was to use. 4) an app ( to access the mesh from anywhere ) - intermediate. @AbrarAliShahas per my first comment, your request is not valid Modbus RTU so I suspect the device will not respond even if the wiring is correct (but the docs are not poor so difficult to be sure!). 4 Demo 8. Updated on Jan 15, 2022. Is this bridge (RTU client => ESP32 BRIDGE => TCP server) correct for this. Arduino Code for Master. Connect ESP32 to the TCP server as a client over TCP. Each UART controller is independently configurable with parameters such as baud rate, data bit length, bit ordering, number of stop bits, parity bit, etc. Most complete Modbus library for Arduino. bin with the following command: esptool. ESP32 BLE Tracker. Connect CH340 USB to RS485 to converter. Switch branches/tags. NET implementations. Modbus allows communication among many devices connected to the same network, for example, a system that measures temperature and humidity and communicates the results to a computer. Change your modbus poll with odd/even parity. Find this and. cpp","path":"src. In the iotDevice you use EspNow2MqttClient to send the data (ie. mp3 audio file from the file system, sound is played in a separate task not blocking the system: I2SRtttl: string = play Ring Tones Text Transfer Language. BH1750 ambient light sensor. This is also mandatory for H-Bridge devices. SetOption60 0. The Modbus protocol uses several types. DAC GPIOs~ DAC is limited to specific GPIOs: ESP32: only GPIO 25-26; ESP32-S2: only GPIO 17-18An Espressif ESP-Modbus Library (esp-modbus) is a library to support Modbus communication in the networks based on RS485 or Ethernet interfaces. Secure sensor and gateway platform based on ESP8266 and ESP32. The Modbus protocol uses several types. ESP32 microcontroller、 microSD card slot、USB-C、extension connectors. That the result if changing your parity modbus bridge to node-red. Automations:¶ on_frame (Optional, Automation): An automation to perform when a CAN frame is received. 1053×615 86. In this context, the Modbus protocol faces some challenges: Firstly, the Modbus protocol has significant security issues. 0, the component freemodbus has been moved from ESP-IDF to a separate repository: ESP-Modbus component on GitHub. This feature is included in ESP32 builds, but for ESP8266 it is included only in tasmota-knx build When compiling your build add the following to user_config_override. [ESP8266/ESP32 firmware update over Modbus](examples/Files) * [ModbusRTU to ModbusTCP bridge](examples/Bridge) ## Notes: 1. Issues. Serial Bridge Using ESP8266. Sonoff Bridge: Enable and Process data via hardware serial interface using GPIO01 and GPIO03. There are multiple ways to achieve that. your sensor reads) and also to gather data (polling) from mqtt (ie. CAN Bus Modules. Every component is assigned in the device template to the GPIO it is wired (connected) to. Step 3: Prepare Device and Connect to It. Reads Deye solar inverter metrics using Modbus over TCP and publishes them over MQTT. Code Issues. The idea is letting you making your own device and connecting it to mqtt via gateway: Therefore this library provides two (singleton) objects.