esp32 News - Page 38 of 69 - CNX Software

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 31, 2021 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

MutantC V4 – DIY Raspberry Pi Handheld PC adds ESP32-S2 module

Earlier this year we wrote about Mutantc V3 DIY Raspberry PI UMPC after noticing a talk about it at FOSDEM 2021 online conference. MutantC V4 is a new version of the Raspberry Pi handheld PC that is both easier to build and cheaper. The new model replaces the Arduino Pro Micro board with a more compact ESP32-S2 module and offers a Lite version with even fewer parts (notification LED, IR blaster, IMU, etc..) to make it easier to build. The new MutantC v4 shares many of the same features of the previous versions: Supported SBCs – Raspberry Pi Zero, 2, 3, 4 and compatible. Wireless module for keyboard and other controls – Ai. Thinker ESP-12K module based on ESP32-S2 single-core WiFi microcontroller @ 240 MHz with 8MB flash Display – 2.8-inch, 3.5-inch, or 4-inch “GPIO” LCD such as AdaFruit PiTFT 480×320 display Keyboard – 56-key customizable keyboard with 2x shoulder […]

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 […]

August 24, 2021August 24, 2021 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

An ESP32-based BBC Micro:bit clone – Meet Mbits

A few years ago, we noted a BBC Micro:bit clone based on ESP32 WiSoC with Banana Pi ‘s BPI:bit board with an array of 25 RGB LEDs and WiFi & Bluetooth LE connectivity. There’s now another such clone with Elecrow Mbits designed in a way that resembles the BBC Micro:bit v2 board, but replacing the Nordic Semi nRF52833 2.4GHz/BLE SoC with the ESP32 dual-core wireless chip with support for both WiFi and BLE. The specifications between Elecrow Mbits and BBC Micro:bit v2 are close enough, although ESP32 is a more powerful processor, and the MBits board comes with more memory and storage. Power consumption of the BBC Micro:bit v2 should be much better, so if anything needs to run on battery for an extended period of time, it may be a better choice, or you’re gonna need a bigger battery. The GPIO pinout looks different too, so not all Micro:bit […]

August 18, 2021August 18, 2021 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

$4 Lolin S2 Mini ESP32-S2 WiFi IoT board works with Wemos D1 Mini shields

If you liked Wemos D1 mini ESP8266 board with stackable add-on boards, you’ll probably love Wemos/Lolin S2 Mini board with the same factor, but fitted with an ESP32-S2 single-core WIFi processor, and offering twice the number of I/Os. The board comes with 4MB flash, 2MB PSRAM, a USB-C port for power and programming, as well as two 16 pin headers for GPIOs, ADC, DAC, and more. Lolin S2 Mini V1.0.0 specifications: SoC – Espressif Systems ESP32-S2FN4R2 Xtensa single-core 32-bit LX7 microprocessor up to 240 MHz with 320 KB SRAM, 4MB Flash, 2MB PSRAM Expansion headers – 2x 16-pin headers with 27x IO, ADC, DAC, I2C, SPI, UART, USB OTG USB – 1x Type-C USB for 5V power and programming Misc – Reset button and button 0 also used to enter Device Firmware Upgrade (DFU) Dimensions – 34.3 x 25.4 mm Weight – 2.4 grams The board is compatible with Lolin/Wemos […]