# ESP-NOW

ESP-NOW is Espressif's connectionless Wi-Fi communication protocol and development component for ESP32-series SoCs, providing device connection and control features.

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## DIY ESP32-P4 weather station & air quality monitor connects to LoRa and ESP-NOW sensors, various weather APIs

DevFeed: [DIY ESP32-P4 weather station & air quality monitor connects to LoRa and ESP-NOW sensors, various weather APIs](<https://devfeed.tech/articles/diy-esp32-p4-weather-station-air-quality-monitor-connects-to-lora-and-esp-now-sensors-various-weather-apis-14023.md>)

Original publisher: [Read original article](<https://www.cnx-software.com/2026/09/03/diy-esp32-p4-weather-station-air-quality-monitor-connects-to-lora-and-esp-now-sensors-various-weather-apis/>)

Author: Jean-Luc Aufranc (CNXSoft)

Published: 2026-09-03T04:55:46Z

Content type: article

Language: en

Sources: [CNX Software - Embedded Systems News](<https://devfeed.tech/sources/cnx-software-embedded-systems-news.md>)

Topics: [ESP32-P4](<https://devfeed.tech/topics/esp32-p4.md>), [ESP32](<https://devfeed.tech/topics/esp32.md>), [ESP-NOW](<https://devfeed.tech/topics/esp-now.md>), [lora](<https://devfeed.tech/topics/lora.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [monitor](<https://devfeed.tech/topics/monitor.md>), [Embedded Systems](<https://devfeed.tech/topics/embedded-systems.md>), [dashboards](<https://devfeed.tech/topics/dashboards.md>)

Tags: [arduino](<https://devfeed.tech/tags/arduino.md>), [ble](<https://devfeed.tech/tags/ble.md>), [c-c-plus-plus](<https://devfeed.tech/tags/c-c-plus-plus.md>), [display](<https://devfeed.tech/tags/display.md>), [diy](<https://devfeed.tech/tags/diy.md>), [esp-now](<https://devfeed.tech/tags/esp-now.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [esp32-p4](<https://devfeed.tech/tags/esp32-p4.md>), [espressif](<https://devfeed.tech/tags/espressif.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [iot](<https://devfeed.tech/tags/iot.md>), [lora](<https://devfeed.tech/tags/lora.md>), [monitor](<https://devfeed.tech/tags/monitor.md>), [sensors](<https://devfeed.tech/tags/sensors.md>), [touchscreen](<https://devfeed.tech/tags/touchscreen.md>), [waveshare](<https://devfeed.tech/tags/waveshare.md>), [wifi](<https://devfeed.tech/tags/wifi.md>), [wifi-6](<https://devfeed.tech/tags/wifi-6.md>), [wireless](<https://devfeed.tech/tags/wireless.md>)

### AI overview

This article describes an ESP32-P4 weather station and air quality monitor built from off-the-shelf boards. It uses a 10.1-inch dashboard, a Sensirion SEN66 multisensor, and LoRa and ESP-NOW sensor nodes, with optional weather data from several APIs and no required cloud account.

### Source excerpt

Harald Kreuzer has built an ESP32-P4 weather station and air quality monitor that features a 10.1-inch dashboard display and a built-in Sensirion SEN66 sensor for particulate matter, CO2, VOC, and NOX, and connects to wireless LoRa and ESP-NOW sensors. The project is entirely made of off-the-shelf boards, so no custom hardware is used, and it should be relatively easy to reproduce. It doesn't require any cloud or user account, although it can connect to a choice of weather APIs (Open-Meteo, OpenWeatherMap or Visual Crossing) to display weather forecasts. The build is fully documented in a long blog post, so we'll highlight the key features of the project in this article. Hardware specifications for the main unit: Based on ESP32-P4-Module-DEV-KIT-C Credit card-sized ESP32-P4-Module-DEV-KIT SBC based on an ESP32-P4NRW32 module with ESP32-P4 with 32MB PSRAM and ESP32-C6 for WiFi and BLE 10.1-inch IPS panel with 1280 x 800 resolution, 800:1 contrast ratio, [...] The post DIY ESP32-P4 weather station & air quality monitor connects to LoRa and ESP-NOW sensors, various weather APIs appeared first on CNX Software - Embedded Systems News.

## ESPHome 2025.11.0: WiFi overhaul and ultra-low latency events

DevFeed: [ESPHome 2025.11.0: WiFi overhaul and ultra-low latency events](<https://devfeed.tech/articles/esphome-2025-11-0-wifi-overhaul-and-ultra-low-latency-events-16703.md>)

Original publisher: [Read original article](<https://esphome.io/blog/2025/11/19/esphome-2025-11/>)

Author: Jesse Hills

Published: 2025-11-19T00:00:00Z

Content type: release

Language: en

Sources: [ESPHome - Smart Home Made Simple - Blog](<https://devfeed.tech/sources/esphome-smart-home-made-simple-blog.md>)

Topics: [esphome](<https://devfeed.tech/topics/esphome.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [Low Latency](<https://devfeed.tech/topics/low-latency.md>), [Network](<https://devfeed.tech/topics/network.md>), [Bluetooth](<https://devfeed.tech/topics/bluetooth.md>), [ESP32](<https://devfeed.tech/topics/esp32.md>), [ESP-NOW](<https://devfeed.tech/topics/esp-now.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [MQTT](<https://devfeed.tech/topics/mqtt.md>), [USB](<https://devfeed.tech/topics/usb.md>)

Tags: [bluetooth](<https://devfeed.tech/tags/bluetooth.md>), [esp-now](<https://devfeed.tech/tags/esp-now.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [esphome](<https://devfeed.tech/tags/esphome.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [improvements](<https://devfeed.tech/tags/improvements.md>), [latency](<https://devfeed.tech/tags/latency.md>), [low-latency](<https://devfeed.tech/tags/low-latency.md>), [mqtt](<https://devfeed.tech/tags/mqtt.md>), [release](<https://devfeed.tech/tags/release.md>), [releases](<https://devfeed.tech/tags/releases.md>), [usb](<https://devfeed.tech/tags/usb.md>), [wifi](<https://devfeed.tech/tags/wifi.md>)

### AI overview

ESPHome 2025.11.0 is a performance and reliability-focused release that overhauls WiFi connection handling, reduces event-processing latency across several integrations, optimizes memory use, and adds seven hardware components.

### Source excerpt

ESPHome 2025.11.0 overhauls WiFi connection handling, cuts event processing latency across BLE, USB, MQTT and ESP-NOW, frees several KB of RAM and flash, and adds seven new components.

## ESPHome 2025.8.0: nRF52 support and ESP-NOW mesh communication

DevFeed: [ESPHome 2025.8.0: nRF52 support and ESP-NOW mesh communication](<https://devfeed.tech/articles/esphome-2025-8-0-nrf52-support-and-esp-now-mesh-communication-16700.md>)

Original publisher: [Read original article](<https://esphome.io/blog/2025/08/20/esphome-2025-8/>)

Author: Jesse Hills

Published: 2025-08-20T00:00:00Z

Content type: release

Language: en

Sources: [ESPHome - Smart Home Made Simple - Blog](<https://devfeed.tech/sources/esphome-smart-home-made-simple-blog.md>)

Topics: [esphome](<https://devfeed.tech/topics/esphome.md>), [ESP-NOW](<https://devfeed.tech/topics/esp-now.md>), [Microcontrollers](<https://devfeed.tech/topics/microcontrollers.md>), [Zephyr RTOS](<https://devfeed.tech/topics/zephyr-rtos.md>), [ESP32](<https://devfeed.tech/topics/esp32.md>), [ESP32-P4](<https://devfeed.tech/topics/esp32-p4.md>), [Bluetooth](<https://devfeed.tech/topics/bluetooth.md>)

Tags: [2025](<https://devfeed.tech/tags/2025.md>), [bluetooth](<https://devfeed.tech/tags/bluetooth.md>), [esp-now](<https://devfeed.tech/tags/esp-now.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [esp32-p4](<https://devfeed.tech/tags/esp32-p4.md>), [esphome](<https://devfeed.tech/tags/esphome.md>), [introduction](<https://devfeed.tech/tags/introduction.md>), [latency](<https://devfeed.tech/tags/latency.md>), [low-latency](<https://devfeed.tech/tags/low-latency.md>), [memory-optimization](<https://devfeed.tech/tags/memory-optimization.md>), [microcontrollers](<https://devfeed.tech/tags/microcontrollers.md>), [mipi](<https://devfeed.tech/tags/mipi.md>), [optimization](<https://devfeed.tech/tags/optimization.md>), [release](<https://devfeed.tech/tags/release.md>), [releases](<https://devfeed.tech/tags/releases.md>), [zephyr](<https://devfeed.tech/tags/zephyr.md>)

### AI overview

ESPHome 2025.8.0 adds basic Nordic nRF52 support built on Zephyr, ESP-NOW device-to-device communication for ESP32 platforms, and MIPI DSI display support for ESP32-P4. It also introduces memory optimizations and requires Python 3.11 or newer.

### Source excerpt

ESPHome 2025.8.0 introduces the Nordic nRF52 platform built on Zephyr, ESP-NOW device-to-device communication, and MIPI DSI display support, and now requires Python 3.11 or newer.

## Exploring wireless communication protocols on ESP32 platform for outdoor applications

DevFeed: [Exploring wireless communication protocols on ESP32 platform for outdoor applications](<https://devfeed.tech/articles/exploring-wireless-communication-protocols-on-esp32-platform-for-outdoor-applications-13845.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/esp-now-for-outdoor-applications/>)

Author: John Lee

Published: 2024-12-20T00:00:00Z

Content type: article

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [ESP-NOW](<https://devfeed.tech/topics/esp-now.md>), [ESP32-C6](<https://devfeed.tech/topics/esp32-c6.md>), [Wi-Fi](<https://devfeed.tech/topics/wi-fi.md>), [benchmarking](<https://devfeed.tech/topics/benchmarking.md>), [Internet of things](<https://devfeed.tech/topics/iot.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>)

Tags: [benchmarking](<https://devfeed.tech/tags/benchmarking.md>), [blog](<https://devfeed.tech/tags/blog.md>), [esp-idf](<https://devfeed.tech/tags/esp-idf.md>), [esp-now](<https://devfeed.tech/tags/esp-now.md>), [esp32-c6](<https://devfeed.tech/tags/esp32-c6.md>), [espressif](<https://devfeed.tech/tags/espressif.md>), [iot](<https://devfeed.tech/tags/iot.md>), [performance](<https://devfeed.tech/tags/performance.md>), [performance-metrics](<https://devfeed.tech/tags/performance-metrics.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [wi-fi](<https://devfeed.tech/tags/wi-fi.md>), [wireless](<https://devfeed.tech/tags/wireless.md>)

### AI overview

The article evaluates Wi-Fi, ESP-NOW, and ESP-NOW-LR outdoors using ESP32-C6-DevKitM-1 boards as transmitters and receivers. It describes the board's Wi-Fi 6, 2.4 GHz, low-power, and PCB antenna characteristics, including the limitation that it lacks external antenna support.

### Source excerpt

Introduction# The ESP32-C6-DevKitM-1 was chosen for testing Wi-Fi, ESP-NOW, and ESP-NOW-LR due to its cutting-edge features and suitability for real-world evaluations. While its compact design and integrated capabilities make it an excellent choice, it should be noted that the board does not natively support external antennas. Instead, it features a high-quality PCB antenna optimized for typical IoT applications.

## Data transmission reliability over ESP-NOW protocol in indoor environment

DevFeed: [Data transmission reliability over ESP-NOW protocol in indoor environment](<https://devfeed.tech/articles/data-transmission-reliability-over-esp-now-protocol-in-indoor-environment-13948.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/reliability-esp-now/>)

Author: John Lee

Published: 2024-12-19T00:00:00Z

Content type: article

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [ESP-NOW](<https://devfeed.tech/topics/esp-now.md>), [Embedded Systems](<https://devfeed.tech/topics/embedded-systems.md>), [Internet of things](<https://devfeed.tech/topics/iot.md>), [Networks](<https://devfeed.tech/topics/networks.md>), [Espressif](<https://devfeed.tech/topics/espressif.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [data-transmission](<https://devfeed.tech/tags/data-transmission.md>), [embedded-systems](<https://devfeed.tech/tags/embedded-systems.md>), [esp-now](<https://devfeed.tech/tags/esp-now.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [esp32-c6](<https://devfeed.tech/tags/esp32-c6.md>), [esp32-s3](<https://devfeed.tech/tags/esp32-s3.md>), [espressif](<https://devfeed.tech/tags/espressif.md>), [iot](<https://devfeed.tech/tags/iot.md>), [low-power](<https://devfeed.tech/tags/low-power.md>), [networks](<https://devfeed.tech/tags/networks.md>), [performance](<https://devfeed.tech/tags/performance.md>), [wireless](<https://devfeed.tech/tags/wireless.md>)

### AI overview

This article examines ESP-NOW for reliable, low-power data transmission in indoor IoT and smart applications. It contrasts ESP-NOW with Wi-Fi, describing lower power consumption and lower speed, longer stated range, and compatibility limited to Espressif modules. The supplied text ends before the research evaluation is complete.

### Source excerpt

Introduction# Department of Technical Cybernetics at the Faculty of Management Science and Informatics mainly focuses embedded systems and IoT networks, implementing innovative approaches in such systems. Most applications are powered by batteries, and require low power consumption and reliable data transmission. Therefore, the new wireless protocol ESP-NOW has become interesting for implementation in IoT systems.