Esphome nodemcu pinout Plays files inside numbered folders, folders must be I have two esp8266s running on esphome measuring soil humidity and air temperature I would like to use one esp8266 with both sensors on the same ESP8266 Note. Warning. Uploading. Effectively means between which pins you want to measure voltage. I have a NodeMCU that I have installed this code on: esphome: name: garage-sensors platform: ESP8266 board: nodemcuv2 wifi: ssid: !secret Just like the docs for esphome link to. Skip to Maybe give it a go using the following, but looking at the picture of the Aliexpress listing for your board, it doesn’t seem to match the nodemcu-32s board. And I want to use the following adc pins: adc2_7 and adc2_2 according with the following scheme that I find in internet: According wiht the image there are 16 adc pins CT Clamp Current Sensor¶. This component is a global hub that establishes the connection to the PN532 via The SN74HC595 component allows you to use SN74HC595 shift registers as I/O expanders (datasheet, SparkFun) in ESPHome. I want to read an analogue voltage from GPIO32. 0V before it gets to the ADC0 pin on the This post shows how to interface ESP8266 NodeMCU development board (ESP12-E module) with ST7735 TFT display (128×160 pixel resolution). However it is not working as hoped it to be. It uses I2C or SPI communication protocol. All gists Back to GitHub Sign in Sign NodeMCU Pinout Reference | Microcontroller Tutorials Check Details Nodemcu v3 pinout. Thanks. -LED WS2812, to show status-momentary I’d like to be able to manually toggle the onboard blue LED for a ESP32 board. 10, but it should work with newer versions as well. JL1101 (RMII). This brought about a number of Hi All, I would like to share my knowledge regarding Daly BMS that have UART functionality to be integrated using ESP base board (NodeMCU) to Home Assistant. 🙂 but i’m ESPHome is a system which allows you to turn common microcontrollers into smart home devices. This page describes them. Usually, in different boards, the same labels refer to the same GPIO. It’s easy to control through esphomelib, the following does it: switch: - platform: gpio pin: number: D0 inverted: True name: "Relay 1" According to the ESPHome debugger, the UART1 pair (pin 9 and 10) is used for the programmer and wifi, so that pair is a non-option, and it was causing the ESP32 to go into SSD1351 OLED Display¶ ssd1351_spi Component¶. frequency (Optional, frequency): The frequency to To use the pinout, please check the labels on the board and then compare with the pinout that we have. The NodeMCU pin numbering on the silkscreen (e. 8" from here) and have been trying to make it work with ESPHome but I can’t seem to make it render Hello all, I hope this is the correct spot for this issue. These pins need to be output capable. Searching the platformio site leads here WeMos D1 ESP-WROOM-02 — PlatformIO latest documentation. I I have connected up an esp32 devkit V1 to home assistant via ESPhome. WeMos D1 Mini GPIO Pins. clk_pin (Required, Pin Schema): The pin used for the clock line Hydrated ESPHome example configs for LD2410 mmWave presence sensors - ld2410-d1-mini. 1 (esp8266) details The NodeMCU project begins in October 2014 shortly after the release of Espressif Systems’ ESP8266 module, when Hong releases The NodeMCU is an Arduino-compatible board that features the ESP8266 at its core. It uses I²C Bus for communication. yaml. The Bluetooth proxy of ESPHome provides Home Assistant with a maximum number of 3 simultaneous active connections. The PCF8574 component allows you to use PCF8574 or PCF8575 I/O expanders (datasheet, SparkFun) in ESPHome. NodeMCU-32S. There are three variants with similar communication protocols: LD2410 (datasheet and user Analog To Digital Sensor¶. Pinout, specification and IDE configuration to You can BMP280 Temperature+Pressure Sensor¶. Defaults to 0x40. The Current Transformer Clamp (ct_clamp) sensor allows you to hook up a CT Clamp to an analog voltage sensor (like the ADC sensor) and convert the readings to measured single phase AC current. After the bme280 Hi guys! I’m super new to home assistant,yaml, esphome etc. ESPHome knows how to map the silkscreen pins numbers to internal pin numbers 4. Are these pins usable in esphome. Use the full pin schema I have an old NodeMCU Amica ESP8266 which I bought maybe 5 years ago. zoogara (Daryl) November 13, 2023, This article is a color_palette (Optional): When using 8 bit colors, this controls the type of color palette that will be used in the ESP’s internal 8-bits-per-pixel buffer. The ESP8266 NodeMCU Configuration variables:¶ cs_pin (Required, Pin Schema): The pin on the ESP that the chip select line is connected to. Hardware. I have installed the drivers and confirmed that device I purchased a couple of ST7735 TFT displays from AliExpress (the 1. I want to use that switch to detect the state of said door, perhaps taking action or at Configuration variables:¶ multiplexer (Required): The multiplexer channel of this sensor. If you wish to do so, you’ll need to install Home Use this code to make your LD2410 sensor to work with ESP32 or ESP8266 board - ESPHome-YAML-ld2410-esp32. Im trying to add a tag reader and thought I might as well use the pins that are I am working on adding a NFC reader and used a NodeMCU coupled with a RC-522 reader. Sensors allows for reading the analog value of an analog pin, those are from A0 to Remote Receiver¶. But struggling to get the DFRobot PH I recently used esphome. The one thing I have So, using an esp8266/nodemcu with esphome, my plan is to add these sensors:-door sensor, that registre when gate is open/closed. io but cannot see a pinout for wiring and cannot get it communicating. But the WeMos D1 Mini is more like a litte version of the NodeMCU with fewer pins but still enough for basic litte code for ESP8266 Board with 0. The bmp280 sensor platform allows you to use your BMP280 (datasheet, Adafruit) temperature and pressure sensors with ESPHome. uart_id (Optional, ID): The ID of the UART did anyone get this JSN-SR04T working with ESPHome? i followed the instruction n template from here Ultrasonic Distance Sensor — ESPHome the numbers changes so i I have a noctua NF-A20 fan that I would like to control with a D1 mini and ESPHome. If the address pin is pulled high, Configuration variables:¶ address (Optional, int): Manually specify the I²C address of the sensor. This can be used to improve color depth quality of the image. Serial Hardware Serial2 Example Code. Download button. NodeMCU Pinout. The Analog To Digital (adc) Sensor allows you to use the built-in ADC in your device to measure a voltage on certain pins. g. Pins. Not applicable in mode 1. I got a very strange problem. The ssd1306_i2c display platform allows you to use SSD1306 (datasheet, Adafruit), SSD1305 (), SH1107 (datasheet, Adafruit) and SH1106 The bme280 sensor platform allows you to use your BME280 (datasheet, Adafruit) temperature, pressure and humidity sensors with ESPHome. The D1 Mini has 11 GPIO pins that can be ESP32, continue the little guide on how to use this low cost but powerful microcontroller with WIFI integrated. In ESPHome, light components allow you to create lights usable from Home Assistant’s frontend and have many features such as colors, transitions and even effects. The aht10 Temperature+Humidity sensor allows you to use your AHT10 (), AHT20 or AHT30 I²C-based sensor with ESPHome. Three years ago, we added support for using ESP-IDF directly (as an alternative to Arduino). . Defaults to 0x23 (address if address pin is pulled low). Frameworks. ESP8266: Only pin A0 (GPIO17) can be used. AZ-Delivery. stepper. ESPHome tries to map the silk-screen pin numbers into the internal pin numbers with a Pinout. api: [source config. Supported chipsets are: LAN8720 (RMII). # Example configuration entry sensor: - platform: ct_clamp sensor: adc_sensor name: "Measured Current" Dears, Theoretically I have a Wemos_d1_mini32 board. Anyone have an example of how to do this? I found some stuff AHT10 Temperature+Humidity Sensor¶. What I’m having a hard time with is how do you go Because the WeMos D1 Mini is also based also on the ESP8266, the possible pinout would be the same as the NodeMCU. I have scoured the net for example code and Hi Guys, Just received my Espressif ESP32-WROOM-32D board on the back says ESP32_DevKitc_V4 I want to give ESPHome a try and create my first multisensor. key: !secret api_enc The NodeMCU is an Arduino-compatible board that features the ESP8266 at its core. id (Required, ID): The id to use for this output component. First, we will see the pinout diagram and then understand the functions of each pin. On the bottom of this blog, you can download the PDF with the Ai-Thinker ESP-C3-12F Development Board – Note. Once I’m very new to using arduino, and I’ve only just started tinkering with ESPhome. Set up a remote_receiver component, these settings work well for me with a TSOP38238 diode 2:. For example, the pin marked as RX2 on the silkscreen of the ESPHome is a framework for working with ESP devices, UART on NodeMCU? How do you set up a UART device on the NodeMCU? It looks like the UART pins are supposed to be those Hey guys I’m trying to build this on a nodemcuV2 but don’t know where to start and how I can do it with esphome. Configuration variables:¶ pin (Required, Pin Schema): The pin to periodically check. If you’re hooking up a button without I have uploaded the following code to the nodemcu: esphome: name: esp8266_1 platform: ESP8266 board: nodemcuv2 wifi: ssid: "my_wifi" password: "my_wifi_password" manual_ip: static Screenshot_2020-06-29 Basically, all we need to do is connect a few wires from the ESP32 board to the Hi-Link LD2410 presence sensor and code it in ESPHome. I’m new to Home Assistant and most things attached to that subject (basic Raspberry Pi/Arduino projects in the past). Note that this component utilizes the 4-Wire SPI The technical context of this article is Home Assistant 2024. I was under the impression that this is the exact same sensor as the HLK-LD2420 motion and presence Hi, I have a doorcontact connected to my nodemcuv2, but I have issue’s with creating the yaml code Now I have this esphome: name: nodemcu21 platform: ESP8266 Dear all, I just started with Esphome and want to integrate a 4x4 matrix keypad. For example if you know that That is what this tutorial is for. This Instructions for setting up stepper motor drivers in ESPHome. DP83848 (RMII). You can use this automation to automatically prevent deep sleep when a MQTT message on the topic ESP8266 NodeMCU V3 with Multisensor IR Flame Detector SensorLDR Light SensorRCWL-0516 Microwave Radar Motion SensorDS18B20 Temperature Sensor Configure Home Assistant with ESPHome Add-on esphome: name: I tried to use the ESPHome LD2420 24Ghz mmWave Radar configuration with use my HMMD mmWave sensor. Active connections. All other options from Binary Sensor. Description. echo_pin (Required, Pin Schema): The input pin on which to wait for the Working on a LD2410 esp32. When I have a NodeMCU flashed with ESPHome. IP101 (RMII). Defaults to the default of your board (usually GPIO21 for ESP32 and GPIO4 for ESP8266). They are used to connect components from Hi There, Need help in getting code for my PH sensor. Home Assistant add-ons run as individual containers; this can make accessing your configuration files/logs a bit challenging. ESP8266 Analog Read with Lua/NodeMCU. Hardware . ESPHome Web Hi, You can share the final config, I have same issue. 8), and you may want take it into account for the calibration. To do this, solder a resistor with about 4. The st7789v display platform allows you to use ST7789V (datasheet, Tindie) displays with ESPHome. Platform Espressif 32: ESP32 is a series of low-cost, low-power On the current nodemcu maybe look for any soldering issues near the A0 pin and it's onboard voltage dividers that scale the 3. The DHT20 sensor has the packaging of the DHT PN532 NFC/RFID¶ Component/Hub¶. 1x ESP32. Basically, if the unit has a CN105 header on the main board, it should work with this library. This article originally appeared at my Note. NodeMCU v2 and v2. Reset button. This section shows how use the NodeMCU firmware to read analog values with the ESP8266. io to create a washing machine and dryer monitoring system and it worked very well. Nodemcu esp8266 pinout gpio esp arduino lolin blynk introduction esphome Create a scale with the ESP8266 NodeMCU using a load cell and the HX711 amplifier. Has no AUX LED on any boards. A module with ESP32 at its core. ESP32: GPIO32 through GPIO39 can be Let’s explore a detailed explanation of GPIO pins of ESP8266 NodeMCU and their functions. ESP32 has three serial ports. dfplayer. Holding down Boot and then pressing EN The fingerprint_grow component allows you to use your R307, R503, R503-RGB, ZFM-20, fingerprint sensors with ESPHome. It is very similar to the FastLED Light platform. Component/Hub¶ The reader can be powered by the I see there are a couple of pins on the board labeled clk and cs. So well, I thought I’m going to build a bunch of stuff! I ordered I’m trying to use the mode: INPUT_PULLDOWN option with my defined binary sensors and having no success. Managed to work out DHT sensors Dallas 1-wire sensor and UltraSonic Sensor. The ssd1351_spi display platform allows you to use SSD1351 (datasheet, Adafruit 128x128, Adafruit 128x96, Waveshare 128x128) displays NodeMCU-32S . resolution (Optional, int): An optional resolution from 9 to DOIT ESP32 DevKit V1 Pinout Diagram & Reference. 11 and ESPHome 2024. Using this topic as a reference: PWM Fan Controller I created this configuration: I just measured it with a multimeter on DC between A0 and GND. 1. So far the ESP8266 (nodemcu V3) is connected to Esphome, but I dont see any keys pressed in Link to the pinout image v2. SSD1306 OLED Display¶ Over I²C¶. 3V signal down to 1. The DOIT ESP32 DevKit V1 is probably the most famous development board based on the equally popular ESP32 Wi-Fi Configuration variables:¶ type (Required, string): The type of LAN chipset/phy. All steppers start out with a target and current position of 0 on boot. esp32: board: wemos_d1_mini32 Welcome to ESPHome Web! ESPHome Web allows you to prepare your device for first use, install new versions and check the device logs directly from your browser. gain (Required, float): The gain of I tried searching for “DevKitC”, “Dev Kit C”, "WROOM’ and all the board types that appear aren’t nodemcu-32S. scl (Optional, Pin): The pin for the clock line of the I²C LD2410 Sensor¶ Component/Hub¶. The docs say it’s supported for ESP32 but I can’t get mode: I can see information for it on esphome. 96 Inch OLED Display - peff74/esp8266_OLED_HW-364A The pinout is as follows: Let’s take a closer look at the WeMos D1 Mini pins and their functions one by one. You can find It here ESP32 Dev Kit v1 - TTGO T-Display 1. NodeMCU v3 has a slightly different pinout compared to v1. For example, if you want to upload a binary via OTA with deep sleep mode it can be difficult to catch the ESP being active. I believe it is under GPIO2. For more information, see ESP32-WROOM-32 Datasheet. I found the tool here. The NodeMCU project begins in October 2014 shortly after the release of I’ve been using board: nodemcu-32s and it seems to work but is that the proper one? I’m running into blue tooth problems with minimal definition and I suspect that the With an array of options at your disposal, ranging from GPIOs to specialty pins, the versatility of the Nodemcu Lua V3 ESP8266 pinout accommodates a spectrum of applications and Configuration variables:¶ fw_version (Optional): Allows you to retrieve the LD2420 24Ghz mmWave Radar Sensor firmware version. rows (Required, list): A list of pins where the horrizontal matrix lines are connected, in order from top to bottom. txt I am trying to connect my CT Clamp to my NodeMcu Amica using the CT Clamp ESPhome Integration. After your hint with the frequency I put a small test program on the esp: esphome: name: "test" platform: Configuration variables:¶ address (Optional, int): Manually specify the I²C address of the sensor. It became popular because it is a WiFi-ready microcontroller by itself – no need for an The ESP8266 NodeMCU includes 17 GPIO pins that can be programmed for various functions by configuring the relevant registers. Instructions for setting up GPIO pin switches in ESPHome that control GPIO outputs. The I²C is required to be set up in your ESP32 NodeMCU Module WLAN WiFi Development Board | Dev Kit C V2 with CP2102 compatible with Arduino. Sensor¶. The remote_receiver component lets you receive and decode various common remote control signals, such as infrared or 433 MHz radio frequency (RF) signals. In Learn how to read digital inputs (like a button switch) and control digital outputs (an LED) using the ESP8266 NodeMCU board programmed with Arduino IDE. Devices which maintain a continuous ESPHome Tooling; Boards NodeMCU ESP32; ESP32 S2 Mini; ESP32 S3 Pro; ESP32 C3 Super Mini; ESP32 C3 MINI-1; ESP32 WT32-ETH01; ESP32 WROVER; ESP32 WROOM; Pinout; The neopixelbus light platform allows you to create RGB lights in ESPHome for individually addressable lights like NeoPixel or WS2812. I followed the RC-522 and NodeMCU documentation, as well as a detailed description Removal of “old style” Platform Configuration¶. However, if you for example The listed binary_sensors supports all options from Binary Sensor like automations and filters. I don’t know why he’s using pin 13 specifically and which pin I ESPHome’s configuration files have several configuration types. Configuration. May contain any options from Text Sensor. In my example, I am using a generic ESP32-WROOM-32 board from AliExpress. phaedrus42 Any idea what to choose when setting up a new ESPHome device while using a D1 mini ESP32? I chose this but it does not seem to work. 3x I have used the PIN Outs from the following link and also using the same RS232 Converter. The ST7735 TFT display is a Configuration variables:¶ type (Optional): Choose between single for standard 1 bit bus SPI (the default) or quad for quad SPI. It uses 3 wires (optionally 4) for communication. The 1-Wire bus the devices are connected to should have an external pullup resistor of about In my case this configuration does not work with en ESP-C3 board and Esphome. Contents. A typical NodeMCU board (if it is Key Component. Link to the pinout image v2. report_position Action¶. Flashing ESP8266 with The ST7789 TFT display module is connected to the NodeMCU board as follows: GND is connected to pin GND of the NodeMCU board, VCC and BL are connected to pin 3V3, BME680 Temperature+Pressure+Humidity+Gas Sensor via BSEC¶ Component/Hub¶. The I²C or Hello, I would really build some kind of rf433 receiver/sender but all prohecrs which ive found was not working (also tried omgateway) If someone has working Solution and could Hey. The ld2410 sensor platform allows you to use HI-LINK LD2410 motion and presence sensors with ESPHome. 7kΩ Configuration options: file (Required, int, templatable): The file number inside the mp3 folder to play. I have successfully installed ESPHome on a couple of d1 minis previously, That didn't work. GPIO Pins of ESP8266 NodeMCU | ESP8266 pinout. NodeMCU Communication Configuration variables:¶ name (Required, string): The name of the camera. Many boards have a pin numbering for the exposed pins that is different from the internally used ones. 0 and v3 is the pinout. remote_receiver: id: recv_ir pin: number: ${receiver_pin} inverted: true As a long time lurker/reader/user of the content of this forum, I would like to do something back 🙂 And in this case I would like to share how I got an ESP32 S3 DevKitC-1 ESP32 30 pin Development board pinout diagram GPIO’s pins. Select quantity discount: 1x ESP32. Used for the original NodeMCU NodeMCU v2 and v2. I haven’t had luck using the uart connection, so I am going to program it and then just use the single output. yaml:35] encryption: Invalid key format, please check it's using base64. tx_pin (Optional, Pin): The pin to send data to from the ESP’s perspective. The pn532 component allows you to use PN532 NFC/RFID controllers (datasheet, Adafruit) with ESPHome. I’ve ordered some LD1125H 24GHz The NodeMCU project begins in October 2014 shortly after the release of Espressif Systems’ ESP8266 module, when Hong releases the first files of the future NodeMCU sensors with ESPHome. 3. Largely the pin notes from NodeMCU ESP8266 apply to D1 mini, the Reading the link, for ESP32 i2c you can reassign different pins other than the default 21 / 22 (as referred to in the ESPHome link), but you will read that the two you chose, 4 is not good because it is meant to be high on I have a 4 Relay Module board which uses optocouplers, and has an active low. 14 ESP32 - NodeMCU V3 V2 ESP8266 Lolin32 - NodeMCU ESP-32S - WeMos Lolin32 - WeMos Lolin32 mini - ESP32-CAM Configuration variables:¶ update_interval (Optional, Time): The interval to check the sensor. I’m currently using the following yaml file: esphome: name: main-power platform: ESP32 board: e Link to the high resolution pinout image. Both use the same chip (S3KM1110) according to this site and the board layout, pinout and baud rate are all identical. Activating internal pullups¶. Required if there is more than one device on the bus. I’m looking to use a NodeMCU running ESPHome to control the many things I have on my desk Altitude and absolute humidity:¶ The first block sensor starts with the normal bme280 sensor components temperature, pressure, and humidity with each their own id. Follow the next table or schematic diagram to wire the load cell Step-by-step guide to flashing ESPHome firmware on ESP32/ESP8266 for beginners & pros. The sensor is used in Forced Mode where measurement is performed and then the Configuration variables:¶ pin (Required, Pin Schema): The pin to use PWM on. Learn how to read digital inputs (like a button switch) and from Configuration variables: id (Optional, ID): Set the ID of this device for use in lambdas. Boot. GPIO Pins: The board provides numerous General Purpose Input/Output (GPIO) pins which can be used for various digital input/output functionalities. Includes gear tips, Once you create a program for it using ESPhome you will then download that program to the ESP8266 via USB cable from the your device on which ESPhome is running. RTL8201 (RMII). 1 (esp8266) details. ID¶ Quite an important aspect of ESPHome are “IDs”. However, ESP8266-based development boards with NodeMCU firmware are also called Configuration variables:¶ trigger_pin (Required, Pin Schema): The output pin to periodically send the trigger pulse to. internal (Optional, boolean): Mark Configuration variables:¶ baud_rate (Required, int): The baud rate of the UART bus. I have a NodeMCU V3 Lua ESP8266 ESP-12E and I am struggling to configure it in ESPHome. icon (Optional, icon): Manually set the icon to use for the camera in the frontend. esp32: board: . The only way to get that is to search for “nodemcu-32s”. D0, A0) is different from the internal pin numbering. DHT22 Temperature & Humidity Sensor. Power Forum - Renewable Energy Discussion ESPhome Axpert 5k RS232 Pinout 1-Wire Bus¶. The following image shows the pinout for NodeMCU board. play_folder Action¶. reset_pin (Optional, Pin Schema): The pin connected to the RST Good morning all, I’ve decided to build some sensors for my home after viewing some of the YouTube videos regarding mmwave sensors. The bme680_bsec sensor platform allows you to use your BME680 (datasheet, Adafruit, Pimoroni) Use the BME680 sensor module with ESP8266 NodeMCU board to measure gas, pressure, temperature, humidity using Arduino IDE. This board just arrived from Aliexpress it’s labeled as esp wroom-32 Can someone provide a yaml config that works for this board along with that AM2302 temp and humidity The bme680 sensor platform allows you to use your BME680 (datasheet, Adafruit) temperature, pressure and humidity sensors with ESPHome. The one_wire component allows you to use supported 1-Wire devices in ESPHome. ESP32-WROOM-32. EN. First, Light Component¶. 0, with the RX and TX pins labeled as D9 and Configuration variables:¶ address (Optional, int): The address of the sensor. These pins also support functionalities like PWM, I2C, SPI, and The main difference between NodeMCU v1. I’m having a real hard time with configuring an ultrasonic sensor. ESP32 NODEMCU Module WiFi Development Board with CP2102; ESP32 D1 Mini Nodemcu Development Board; D1 Mini Nodemcu with ESP8266-12F WLAN module; D1 Mini V3 NodeMCU is, in fact, an IoT platform that includes the firmware which runs on the ESP8266. The HeatPump ST7789V TFT LCD¶ Usage¶. List of Hi there fellow makers. Covers Home Assistant, CLI, and Web Flasher methods. It uses YAML configuration files and, based on the content of these file(s), it creates 3 thoughts on “ ESP32 DevKit ESP32-WROOM GPIO Pinout ” Deepak Lather says: February 24, 2019 at 7:32 pm. Konnected's ESPHome base packages set substitutions or variables that make it simpler for you to reference zones or outputs in your ESPHome configuration. channel_1 (Optional): The configuration options for the 1st channel. Skip to content. I have installed a magnetic reed switch on a door. The same screen work fine with the same ESP-C3 board running Arduino code. ¶ The DHT22 and DHT11 require external pull up resistors on the data line. Debugging. I hope it doesn’t ESPHome config. Remember that gamma_correct is enabled by default (γ=2. Each GPIO can be set with an internal This article provides a detailed breakdown of the NodeMCU pinout, highlighting its GPIO capabilities, power pins, and other features. It became popular because it is a WiFi-ready microcontroller by itself – no need for an PCF8574 I/O Expander¶. Instructions for setting up binary outputs for GPIO pins. Defaults to 60s. You can use any other suitable pins (check the ESP8266 pinout guide). For instance if you command a light to 50% brightness and want it The pin number mappings are similar to NodeMCU ESP8266, but the D1 mini has fewer pins, all of which map to internal pin numbers. I Besides the popular NodeMCU and Dev Boards with ESP8266, ESPHome, WLED or Sensate, as well as graphical development environments Eclipse, with the Espressif-IDF or even the The NodeMCU board, which is essentially based on the ESP-12E Wi-Fi Module, If you take a look at the schematic of NodeMCU, the ADC0 pin in the above pinout image acts The underlying HeatPump library works with a number of Mitsubishi HVAC units. Whether you’re a beginner or an Configuration variables:¶ sda (Optional, Pin): The pin for the data line of the I²C bus.
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