Espressif Category - Page 49 of 94 - CNX Software

September 9, 2021April 8, 2022 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

ESP32 Arduino 2.0.0 release adds ESP32-C3 and ESP32-S2 support

As just noted in my article about LILYGO T-32C3 module, the ESP32 Arduino 2.0.0 release happened a few days ago adding ESP32-C3 and ESP32-S2 support to the Arduino IDE. But the news probably warrants its own post and it is a major release of the Arduino code for ESP32 that also includes other new features and changes namely: Upload over USB CDC. Support for the KSZ8081 Ethernet PHY. LittleFS update for partition label and multiple partitions. Added support for RainMaker. BLE 5 features for ESP32-C3 (ESP32-S3 ready). ESPTOOL update. Added 802.11mc WiFi RTT FTM (Fine Time Measurement) support. Online Documentation added (somehow it requires a login to Readthedocs). USB MSC (Mass Storage) and HID support (ESP32-S2 only). UART refactoring (SerialHardware). New examples, boards added, bugs fixed. You can find a more detailed changelog, including the exact files changes in the source code, on Github. If we want to give it […]

September 9, 2021September 15, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

LILYGO T-32C3 – A small ESP32-C3 WiFi & BLE IoT module with 4MB flash

We’re slowly starting to see more hardware-based on ESP32-C3 RISC-V processor, and LILYGO T-32C3 is a compact module based on the WiFi & Bluetooth LE processor that includes 4MB flash and a PCB antenna. I’d expect T-32C3 to be eventually found in the company’s smartwatches and development boards, and it joins other ESP32-C3 modules from AI Thinker. LILYGO T-32C3 module specifications: SoC – Espressif ESP32-C3 RISC-V processor @ 160 MHz with 400 KB SRAM, 384 KB ROM, 8KB RTC SRAM, 2.4 GHz WiFi 4, Bluetooth 5.0 LE & Mesh Storage – 4MB flash On-board PCB antenna I/Os – 22x castellated holes with GPIO, 3x ADC, SPI, UART, I2C, Boot, Reset, 5V, 3.3V, GND Dimensions – 23 x 11 x 3.5 mm (4-layer PCB) Note the USB interface is not listed in the specs, but USB DN and DP signals are located on GPIO18 and GPIO19 so USB should also be […]

September 8, 2021September 8, 2021 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

25-key ESP32 Touch Matrix makes good use of ESP32’s touch sensor interface

Besides the addition of Bluetooth, there are many differences between ESP8266 and ESP32 and one of the lesser-known interfaces may be ESP32’s touch sensor interface. India-based Electro Point’s ESP32 Touch Matrix makes good use of the touch sensor interface with 25 touch pads arranged in a 5×5 matrix creating a wireless keypad that could connect over WiFi or Bluetooth to a host. ESP32 Touch Matrix board specifications: Wireless module – ESP32-WROOM-32U with Espressif ESP32-D0WD dual-core Tensilica processor, 32Mbit SPI flash, 2.4 GHz WiFi, and Bluetooth LE connectivity 25 keys arranged in a 5×5 matrix Expansion – 4-pin I2C header for expansion, e.g. an OLED display Programming – Programming headers Misc – RGB status indicator, EN button Power Supply – 5V input via 2-pin header; built-in 3.3v regulator for ESP32 Dimensions – TBD When a capacitive load, such as a human hand) is in close proximity to the sense-pad, the sensor […]

September 3, 2021October 8, 2021 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

M5Stamp Pico ESP32-PICO-D4 module ships with a heat-resistant plastic shell

Most WiFi IoT modules are designed to be integrated into products with an enclosure, but the M5Stamp Pico module based on ESP32-PICO-D4 SiP comes with a removable heat-resistant plastic shell that protects the 3D antenna and components, while leaving space to solder headers and/or a Grove connector. The tiny module also comes with a button and RGB LED, and like other ESP32-based M5Stack hardware, M5Stamp Pico is programmable with UIFlow graphical programming platform and compatible with Arduino, MicroPython, and the ESP-IDF. M5Stamp Pico specifications: System-in-Package – Espressif Systems ESP32-PICO-D4 SiP with dual-core processor @ 240MHz, 520KB SRAM, 4MB flash, and 2.4 GHz Wi-Fi 4 up to 150 Mbps and Bluetooth 4.2 BR/LE connectivity Antenna – 2.4 GHz 3D antenna I/Os – 2.54mm pitch header with ADC, DAC, touch sensor, SD/SDIO/MMC host controller, SPI, SDIO/SPI slave controller, EMAC, PWM, UART, I2C, I2S, IR remote controller, up to 12x GPIO, pulse counter […]

August 31, 2021August 31, 2021 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

T-Watch 2021 ESP32 round smartwatch features ESP32 SoC, touchscreen, 500mAh battery

Back in May, LilyGo started selling “Paul’s 3D Things” Open-Smartwatch open-source hardware ESP32 watch as a kit with the board and a round display, but no case, wristband, or battery, although now a smartwatch kit, but still without battery, is available for around $30. The company has now designed the T-Watch 2021 which builds upon the Open-Smartwatch but adds features like a touchscreen display, a vibration motor, a magnetometer, and ships as a devkit with board and display or a complete smartwatch kit including a 500mAh battery. T-Watch 2021 specifications: Wireless module – LILYGO T-micro32 module based on ESP32-PICO-D4 module with dual-core ESP32 processor, 4MB FLASH, 2MB PSRAM, ceramic antenna and u.FL antenna connector Connectivity – Bluetooth 4.2 BR/EDR BLE and WiFi 4 2.4GHz 802.11 b/g/n Display – 1.3-inch circular touchscreen LCD with 240×240 resolution (Model GC9A01) USB – Micro USB for charging and programming Sensors 3-axis BMA423 accelerator, pedometer […]

August 30, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

Magicbit is a wire-free, modular STEM education platform (Crowdfunding)

Magicbit board joins other ESP32 platforms for the STEM education market such as the Crowbits Master Kit or ESP32-based Micro:bit clones with visual programming and Arduino and/or MicroPython support, a mobile app, and training materials such as project tutorials and online courses. Magicbit is designed to be wire-free with the hexagonal board offering four module’s connectors, an OLED display, buttons, a buzzer, and more. You can still use cables if you’d like with six crocodile clip holes and an expansion connector. Magicbit hardware specifications: Wireless module based on ESP32 dual-core processor @ 240 MHz with 520kB RAM and 2.4 GHz WiFi & Bluetooth 4.2/5.x LE connectivity, plus 4MB flash storage Display – OLED display Audio – Buzzer USB – 1x Micro USB port for power and programming Expansion 4x module expansions Motor driver Misc – Reset button, 2x user buttons, potentiometer, light sensor, LEDs Power Supply – 5V via MicroUSB […]

August 29, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

Leverage ESP32-S3 AI capabilities with the ESP-DL library

ESP32-S3 is the first Espressif wireless processor with AI instructions, and ESP-DL library for ESP-IDF allows you to easily leverage those AI instructions using boards such as the ESP32-S3-DevKitC-1. The ESP-DL library provides APIs for Neural Network (NN) Inference, Image Processing, Math Operations, and Deep Learning Models that make full use of ESP32-S3’s AI instructions with a 16-bit face recognition model running 6.25 faster, while the 8-bit model is 2.5 times faster than without acceleration. The ESP-DL library can be used as a project component. For instance, it can be used as a submodule of ESP-WHO computer vision framework, by simply copying it to the esp-who/components/ directory. The Model Zoo contains several pre-trained models for (human) face detection & recognition, and cat face detection, with more being developed including color detection and hand-pose detection. Espressif Systems also provides tools to use your own models, and a convention tool allowing you […]

August 26, 2021August 26, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

MiniLink IIoT Node – An Arduino compatible RS485 to LoRaWAN node with wireless expansion

Designed by Thailand-based Saijai Tech, MiniLink IIoT Node is an Arduino compatible board based on either an ESP32 WiFi & Bluetooth SoC or an unnamed Microchip Cortex-M0+ microcontroller designed for Smart Agriculture or industrial applications (e.g. PLC controllers). The board includes an RS485 interface for sensors or actuators, an ACER-branded LoRa module, and expansion headers to add an extra wireless module with either LoRa PtP (P2P, Point-to-Point), NB-IoT, or 3G/4G LTE & GNSS, and some of those add an extra RS485 port. MiniLink IIoT node key features & specifications: MCU (one or the other) Espressif ESP32 dual-core processor with 2.4 GHz WiFi and Bluetooth LE Microchip Arm Cortex-M0+ microcontroller (probably SAMD21) LPWAN – ACER AS923 LoRaWAN module Sensor interface – RS485 or UART via terminal block (jumper selectable) Expansion – 2x 14-pin header for expansion modules Misc – User & reset buttons, RS485/UART selection jumpers, user and power LEDs, USB/TTL […]