cnx-software.com14h ago

Upcoming ESP32-S31 dual-core RISC-V MCU offers Gigabit Ethernet, WiFi, Bluetooth, and 802.15.4 connectivity

https://fed.brid.gy/r/https://www.cnx-software.com/2026/03/24/esp32-s31-dual-core-risc-v-mcu-offers-gigabit-ethernet-wifi-bluetooth-and-802-15-4-connectivity/

Upcoming ESP32-S31 dual-core RISC-V MCU offers Gigabit Ethernet, WiFi, Bluetooth, and 802.15.4 connectivity

It looks like Espressif Systems has a new powerful wireless microcontroller in the works, with the ESP32-S31 sharing some features of the ESP32-P4 and ESP32-S3 microcontrollers. The ESP32-S31 is a dual-core RISC-V MCU with one high-performance core with FPU and SIMD instructions, and one low-power RISC-V core, featuring 62 GPIOs, a Gigabit Ethernet MAC, WiFi, Bluetooth, and 802.15.4 (Thread/Zigbee/Matter) wireless connectivity, and more. ESP32-S31 preliminary specifications: MCU subsystem RISC-V HP (High-performance) RV32IMAFCP CPU with FPU, SIMD, etc.  RISC-V LP (Low-power) MCU core Memory & Storage I/F 512 KB SRAM 32 KB RTC SRAM Support for external octal PSRAM and flash up to 64MB GPU – 2D Pixel Processing Accelerator (PPA) VPU – (M)JPEG codec support Peripherals Display I/F – Parallel LCD interface Camera I/F – MIPI-CSI with integrated ISP and parallel camera interface Audio – 2x I2S Networking Gigabit Ethernet 2.4 GHz WiFi 802.11 b/g/n Bluetooth 802.15.4 for Zigbee, Thread,

CNX Software - Embedded Systems News
cnx-software.com1d ago

ESP-IDF v6.0 framework adds support for ESP32-C5 and ESP32-C61, preview for ESP32-H21 and ESP32-H4

https://fed.brid.gy/r/https://www.cnx-software.com/2026/03/24/esp-idf-v6-0-framework-adds-support-for-esp32-c5-and-esp32-c61-preview-for-esp32-h21-and-esp32-h4/

ESP-IDF v6.0 framework adds support for ESP32-C5 and ESP32-C61, preview for ESP32-H21 and ESP32-H4

Espressif Systems released the ESP-IDF v6.0 framework a few days ago with stable support for ESP32-C5 and ESP32-C61 SoCs, as well as preview support for ESP32-H21 and ESP32-H4 low-power wireless microcontrollers. The framework also implements a new ESP-IDF Installation Manager (EIM) to make the ESP-IDF installation easier, relies on the low-footprint Picolibc C library, adds security and tooling updates, as well as a few Wi-Fi enhancements, and the ability to update the bootloader over the air. Here are some of the ESP-IDF v6.0 highlights: ESP-IDF Installation Manager - Unified cross-platform tool to simplify the setup process for ESP-IDF and compatible IDEs. It's available as a graphical interface or a CLI for automation and CI/CD pipelines. You can check the installation instructions for your OS. Picolibc replaces Newlib for a smaller memory footprint and better performance on resource-constrained devices. Check the Newlib vs Picolibc comparison for details. Contrary to some of

CNX Software - Embedded Systems News
HP van Braam1d ago

I spent several days working on a project, only to discover that it can't work due to stuff out of my control...

#espressif should be a bit more careful with their data sheets. 😭

But I do have a PIO mode IDE host for the ESP32-P4, so that's something I guess. 😅 But UDMA is out of the question due to how the PARLIO peripheral doesn't really work as advertised.

#electronics

cnx-software.com1d ago

ESP32-P4 revision 3.0 gains new power rail, requires new PCB design and firmware

https://fed.brid.gy/r/https://www.cnx-software.com/2026/03/23/esp32-p4-revision-3-0-gains-new-power-rail-requires-new-pcb-design-and-firmware/

ESP32-P4 revision 3.0 gains new power rail, requires new PCB design and firmware

Espressif's ESP32-P4 revision 3.0 and greater converts pin 54 of the chip from NC (non-connected) to a power rail (VDD_HP_1), requires a few extra passives, and an updated firmware. Espressif Systems first unveiled the 400 MHz ESP32-P4 dual-core RISC-V SoC in January 2023, and the official ESP32-P4-Function-EV development board was launched in August 2024, with commercial solutions slowly ramping up last year. You'd think the silicon and related hardware would now be frozen, but apparently not. The pin 54 was likely converted from NC (not connected) to VDD_HP_1 to improve the stability of the high-performance digital domain. The old revisions 1.0, 1.1, and 1.3 are not recommended for new designs, and the company advises people to use revision 3.0 or 3.1. They also provided updated reference schematics with the following key changes: The main differences between chip revisions v1.0/v1.3 (not recommended for new designs) and v3.0 and later versions include

CNX Software - Embedded Systems News
Hackaday3d ago

ESP32: When Is A P4 A P4, But Not The P4 You Thought It Was

https://fed.brid.gy/r/https://hackaday.com/2026/03/21/esp32-when-is-a-p4-a-p4-but-not-the-p4-you-thought-it-was/

133d ago
ESP32: When Is A P4 A P4, But Not The P4 You Thought It Was https://hackaday.com/2026/03/21/esp32-when-is-a-p4-a-p4-but-not-the-p4-you-thought-it-was/
#Microcontrollers #Parts #Chiprevisions #ESP32P4 #Espressif #SKU
ESP32: When Is A P4 A P4, But Not The P4 You Thought It Was

We’re used to electronic parts of the same type staying predictably the same, sometimes over many years. An early Z80 from the mid 1970s can be exchanged with one from the end of production a…

Hackaday
cnx-software.com5d ago

8-inch ESP32-P4 touch display offers WiFi 6, BLE, 802.15.4 connectivity, optional 4G LTE and LoRaWAN

https://fed.brid.gy/r/https://www.cnx-software.com/2026/03/20/8-inch-esp32-p4-touch-display-offers-wifi-6-ble-802-15-4-connectivity-optional-4g-lte-and-lorawan/

8-inch ESP32-P4 touch display offers WiFi 6, BLE, 802.15.4 connectivity, optional 4G LTE and LoRaWAN

Seeed Studio's reTerminal D1001 is an 8-inch capacitive touch display powered by an ESP32-P4 RISC-V microcontroller and equipped with an ESP32-C6 wireless module, a camera, a dual-microphone array, and a speaker. The reTerminal D1001 is a fully enclosed solution designed for HMI applications such as control panels, vision-enabled IoT terminals, video intercoms, and smart dashboards. One highlight compared to other ESP32-P4 displays is optional support for 4G LTE cellular connectivity using an mPCIe module and SIM card slot, as well as LoRaWAN using a Stamp module. reTerminal D1001 specifications: SoC – Espressif Systems ESP32-P4NRW32 CPU Dual-core 32-bit RISC-V HP (High-performance) CPU @ up to 400 MHz with AI instructions extension and single-precision FPU Single-RISC-V LP (Low-power) MCU core @ up to 40 MHz Memory 768 KB HP L2MEM (for dual-core CPU), 32 KB LP SRAM, 8 KB TCM (for LP MCU core) 32MB PSRAM Storage – 128 KB HP ROM, 16

CNX Software - Embedded Systems News
Darkbios 2K16d ago

Estoy trasteando con gráficos en el ESP32-P4 y he montado el típico efecto de agua 2D (ondas + refracción) usando MIPI DSI.

Lo curioso ha sido el cuello de botella:

Con la física en los 2 cores

Usando el PPA para escalar

Todo bien… pero la clave es la memoria.

En SRAM interna va a unos 84 FPS 🚀
En PSRAM cae a ~30 FPS

Dejo vídeo 👇

#ESP32 #ESP32P4 #C #Embedded #Espressif

cnx-software.com6d ago

PycoClaw – A MicroPython-based OpenClaw implementation for ESP32 and other microcontrollers

https://fed.brid.gy/r/https://www.cnx-software.com/2026/03/18/pycoclaw-a-micropython-based-openclaw-implementation-for-esp32-and-other-microcontrollers/

PycoClaw – A MicroPython-based OpenClaw implementation for ESP32 and other microcontrollers

PycoClaw is a MicroPython-based platform for running AI agents on ESP32 and other microcontrollers that brings OpenClaw workspace-compatible intelligence to resource-constrained embedded devices. We had already covered the C-based Miniclaw for ESP32-S3 SoCs, the PycoClaw's developer (Jonathan Peace) told CNX Software that it is a "full OpenClaw-compliant agent" that supports more LLM providers (OpenAI, Gemini, Ollama, etc.), interfaces with not only Telegram, but also ScriptO Studio and WebRTC, and offers features like OTA updates, extensions, and battery-optimized operation. The table below compares PycoClaw to OpenClaw, Nanobot, PicoClaw, NullClaw, and MimiClaw. MimiClaw still offers the lowest footprint and highest efficiency, but PycoClaw appears to offer many more features, including improved GPIO support. It works on ESP32-S3 with at least 8MB flash and PSRAM, ESP32-P4, and should soon support Raspberry Pi RP2350 boards with PSRAM as well. PycoClaw can be installed on supported hardware through a "one-click install" using a compatible web

CNX Software - Embedded Systems News
cnx-software.com6d ago

Review of Open Nextion ESP32-S3-based HMI displays with the Arduino IDE and the ESP-IDF framework

https://fed.brid.gy/r/https://www.cnx-software.com/2026/03/18/review-open-nextion-esp32-s3-based-hmi-displays-with-the-arduino-ide-and-the-esp-idf-framework/

Review of Open Nextion ESP32-S3-based HMI displays with the Arduino IDE and the ESP-IDF framework

ITEAD has sent us samples of the Open Nextion ONX3248G035 and ONX2432G028 ESP32-S3 HMI displays for review. Open Nextion is a new product line that differs from the original Nextion HMI family, which relies on the Nextion Editor for UI design and UART communication for control. Instead, the Open Nextion features an ESP32-S3 wireless microcontroller handling logic processing, display control, and wireless connectivity, all in one integrated package. ITEAD fully supports the ESP-IDF framework and the Arduino IDE with LVGL graphics library support. The ONX3248G035 model features a 3.5-inch screen, while the ONX2432G028 variant has a 2.8-inch screen. The Open Nextion HMI wireless displays also take accessories such as a dual-microphone array, a speaker, and an I/Os adapter. The new Open Nextion product line is especially well-suited to embedded developers/makers who want an all-in-one board with HMI and wireless capabilities, IoT terminal and Smart HMI panel prototyping, students interested in

CNX Software - Embedded Systems News