espressif News - CNX Software - Embedded Systems News

January 7, 2026January 10, 2026 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Espressif Systems showcases ESP32-E22 Wi-Fi 6E SoC and ESP32-H21 BLE MCU for battery-powered devices

Espressif Systems is showcasing its products at CES 2026, including two interesting upcoming parts: the ESP32-E22 Wi-Fi 6E tri-band SoC and the ultra-low-power ESP32-H21 Bluetooth LE MCU for battery-powered devices. Espressif Systems has been teasing an upcoming Wi-Fi 6E SoC for several months, but so far, there have been very few details. Once tipped that the ESP32-E22 tri-band Wi-Fi 6E SoC was demonstrated at CES 2026, I headed over to X and noticed tks posted a few interesting photos from the exhibition. Here’s what we know about the ESP32-E22 so far: CPU – Dual-core RISC-V processor at up to 500 MHz Memory – 1 MB (no optional PSRAM) Wireless Tri-band 2.4/5/6GHz Wi-Fi 6E, 160 MHz channel bandwidth, 2×2 MIMO; tested with iperf; up to 2.1 Gbps physical thoughput Dual-mode Bluetooth 5.4/6.0 (LE + BR/EDR) I/Os – 41x GPIO Host interfaces – PCIe 2.0, USB FS OTG, SDIO 3.0 (when used […]

December 15, 2025December 16, 2025 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

The ESP Private Agents platform aims to ease the development of ESP32-based AI voice assistants with on-device processing

Espressif has just introduced the ESP Private Agents platform to help developers build local, private, and customizable AI assistants for ESP32 devices running on-device, although they can also support hybrid AI workloads with a mix of on-device and cloud processing. The ESP Private Agents platform offers a unified framework that allows developers to build applications combining speed, vision, automation, and agent-based interactions, for example, a multi-lingual, on-device voice agent (aka smart speaker) or task-oriented agents that automate workflows. The solution is built on AWS cloud services using AWS Fargate as a primary application platform and Amazon Bedrock Foundation Models as backend LLM systems. It not only works with ESP32-power devices with speaker and microphone, but also with mobile apps and web clients. Espressif released a Web-based demo, which you can use as a text-based chatbot or as a voice assistant leveraging the speaker and microphone on your computer. The company […]

September 26, 2025September 25, 2025 by Debashis Das - 2 Comments

Espressif’s EchoEar ESP32-S3 voice-controlled AI chatbot runs esp-brookesia firmware

Espressif EchoEar Smart AI Development Kit

Espressif Systems’ EchoEar is a compact ESP32-S3 AI chatbot designed for voice interaction and edge AI applications, for smart toys, voice-enabled speakers, and control systems. It features a 1.85-inch circular touch display, a dual microphone array with local wake-word detection, and support for large AI models from OpenAI, Xiaozhi AI, and Gemini. The kit is built around the ESP32-S3-WROOM-1 Wi-Fi 4 and Bluetooth 5 module, and also integrates a 3W speaker for audio interaction, and a microSD card slot for data storage. Other hardware features include a BMI270 IMU, a green LED, a USB-C port, a magnetic connector, and a battery management chip. Espressif EchoEar Specifications Wireless Module – ESP32-S3-WROOM-1 SoC – Espressif Systems ESP32-S3R8 CPU – Dual-core Tensilica LX7 up to 240 MHz with vector extension for AI/ML workloads RAM – 512KB SRAM, 8MB PSRAM ROM – 284KB Wireless – WiFi 4 and Bluetooth LE 5 Storage – 16MB […]

January 30, 2025March 29, 2025 by Debashis Das - 3 Comments

The Deauther Watch V4S IR is a Wi-Fi hacker watch that can run up to 21 scripts via IR remote for wireless and HID attacks

We previously wrote about the Deauther Watch X used for wireless pentesting. The company has now released the Deauther Watch V4S IR an Wi-Fi hacker watch with a built-in infrared (IR) remote control for executing several scripts stored on a microSD card. It supports deauther attacks, Bad USB (HID) attacks, WiFi packet monitoring, and real-time clock adjustments. The new version features a 1,000mAh battery that can be charged via USB and it comes with includes a Type-C power cable, acrylic cover, and software manual. You can modify the Ducky Script inside the text files but must keep the filenames unchanged for proper operation. These features make this tool useful for cybersecurity professionals and enthusiasts for network security testing, penetration testing, and more. Deauther Watch V4S IR specifications: MCU – ESP8266 WiFi SoC @ up to 160 MHz with 160KB SRAM, 4MB SPI flash Storage – MicroSD card (preloaded with 21 […]

June 16, 2024June 16, 2024 by Tomisin Olujinmi - 18 Comments

ESP32-S3-based kit allows you to build an Internet Radio with a touchscreen display

The ESP32 Internet Radio from Poland-based maker, The MicroMaker, is a simple hardware kit that combines the LilyGo T-Display S3 Development board with an I2S audio breakout module and other components to form a radio that can access and stream from online radio stations. With the ESP32 Internet Radio, you are not limited to the radio stations available in your immediate vicinity. It is powered by the LilyGo T-Display S3 which integrates the network-capable ESP32-S3 microcontroller (Wi-Fi + BLE 5), a 1.9” full-color capacitive touchscreen display, and two programmable buttons. The ESP32-S3’s integrated Wi-Fi capability allows the radio to connect to the Internet, and the touchscreen brings an intuitive and easy-to-use interface to the device. It supports up to 512 stored radio stations, and you can manage these stations from a web browser on your PC or mobile phone. The Internet Radio can be powered by an 18650 Lithium-ion battery […]

June 3, 2024June 3, 2024 by Tomisin Olujinmi - 1 Comment

DSTIKE Deauther Watch X is a cheap wireless hacking tool that runs the ESP8266 Deauther firmware

The DSTIKE Deauther Watch X is a Wi-Fi hacking tool that can be used to test wireless networks, powered by the ESP8266 wireless microcontroller and running the open-source Deauther firmware from SpacehuhnTech. It only works on 2.4GHz networks, since 5GHz Wi-Fi is not supported by the ESP8266. It also features a real-time clock module for displaying the time, like an actual watch. If you are not familiar with the term, a Wi–Fi Deauther is a device that can perform deauth or de-authentication attacks on Wi-Fi networks. It can kick other devices off a Wi-Fi network they are connected to, for learning or other purposes. The Deauther Watch X is the latest product in the DSTIKE Deauther Watch series from Travis Lin and we previously took a look at DSTIKE ESP32 Watch Development Board. The Watch X development board comes in a wristwatch form factor, uses an ESP8266 module instead of […]

June 1, 2024June 1, 2024 by Jean-Luc Aufranc (CNXSoft) - 14 Comments

Espressif releases Arduino ESP32 Core 3.0.0, but PlatformIO support is in doubt

We previously noted the ESP32 Arduino Core 3.0.0 Alpha release added support for ESP32-C6 and ESP32-H2 among other changes. The good news is that Arduino ESP32 Core 3.0.0 is now considered stable, and was released a few days ago based on the ESP-IDF 5.1.4 framework. Users of the Arduino IDE can use it straight away, but as we’ll discuss in more detail below it’s unclear whether PlatformIO will be (officially) supported. There have been many changes since we wrote about the Alpha2 release in November 2023 with 327 commits from 96 contributors. Some of the most recent changes (compared to RC3) include: Updated ESPDuino with extra options (CPU freq and Partition) Add support for WeAct Studio ESP32C3 Attach ETH events at the correct place Enable the possibility to use SPI ETH with only 4 wires Fix ETH.end() Fix ETH.stop() with IDF SPI Nano ESP32: delete programmer.default entry (on main) due […]

May 7, 2024May 8, 2024 by Tomisin Olujinmi - No Comments

NanoCell V2.1 battery-powered ESP32-C3 IoT board runs ESPHome for Home Assistant integration

The NanoCell V2.1 is a development board built around the Espressif ESP32-C3 SoC (system-on-a-chip) preloaded with ESPHome firmware for low-power applications and improved Lithium battery management. The development board is a white printed circuit board with gold-plated contacts and a battery fuel-gauge IC, designed by Frapais’ lab in Greece. As the name suggests, the NanoCell V2.1 is the latest in a series of iterations of ESP32-C3-based devices targeted at low-power applications. Compared to earlier versions, it offers a better user experience and improved power efficiency. It features a buck-boost converter that reduces standby current consumption to 66uA (excluding the current consumed by the ESP32 module). The battery management system (BMS) integrated circuit supports accurate capacity measurement and protects connected Lithium batteries from overcharging and other harmful scenarios. Also, two LEDs on the board serve as power and charging indicators to relay the board’s status. It is based on the same […]