esp32 News - Page 50 of 87 - CNX Software

April 25, 2022April 25, 2022 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

ESP32-C2 WiFi & Bluetooth LE 5.0 chip to support Matter WiFi protocol

Espressif ESP32-C2 is a new WiFi 4 and Bluetooth LE 5.0 chip the Shanghai-headquartered company has been working on since last year. The company claims it has better RF performance due to a smaller package reducing stray parasitics, and it will support the Matter protocol whose first version should become ratified later this year. The first ESP32-C2 product wafers have been received by the Shanghai team in spite of the current lockdown and quarantine in Shanghai due to the COVID-19, and teams in other parts of Asia, Europe, and Singapore are working without interruption on software integration into ESP-IDF and ESP-RainMaker. ESP32-C2 preliminary specifications: RISC-V core 272KB of memory Connectivity WiFi 4 + BLE 5.0 Tx power 20 dBm (FCC limit) 18 dBm for 802.11N MC7 packets (72.2 Mbps) Receiver sensitivity – -97 to -100 dBm for 1 Mbps 802.11B packets. Receive current – 58 mA Package – 4 x […]

April 15, 2022April 15, 2022 by Jean-Luc Aufranc (CNXSoft) - 14 Comments

ESP USB Bridge project converts ESP32-S2 or ESP32-S3 into a USB to UART/JTAG chip

Espressif’s ESP USB Bridge is a project based on the ESP-IDF that leverages ESP32-S2 or ESP32-S3 USB interface to use the board as a USB to UART or USB to JTAG debug board. It can serve as a substitute for USB to TTL debug boards based on CH340 or CP2104 for instance, be used with OpenOCD in JTAG bridge mode, and also flash UF2 firmware file to the target board. As just mentioned, there are three main use cases: Serial bridge mode with a terminal program or a firmware flashing tool like esptool. In that case, it just works like your typical USB to TTL debug board JTAG bridge mode for JTAG debugging with OpenOCD, and if the target board is based on ESP32, you can use openocd-esp32 project Mass storage device where the board can be accessed by a file manager on the host computer. One of the specific […]

April 12, 2022 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

RAKwireless adds more Wisduo and Wisblock modules, launches WisToolBox configuration tool for IoT devices

RAKwireless have launched several Wisduo wireless modules, a dozen of Wisblock modules for IoT prototyping, updated WisDM, WisGateOS, and RUI3 software, and introduced WisToolBox mobile/desktop configuration tool for IoT devices as part of their spring launch 2022 even entitled “Empowering the Innovators: Making IoT your own”. Three new Wisduo modules RAK3172-SIP WisDuo SIP based on STM32WLE5 Wireless SoC with LoRa connectivity. Compared to the original RAK3172, it offers more IO pins, integrates a TCXO, and comes in a smaller size. The module supports LoRa P2P and complies with Class A, B, & C of LoRaWAN 1.0.3 specifications. Cost: $5.99. WisDuo RAK3272-SiP – That’s a breakout board for the RAK3172-SiP System-in-a-Package module for LoRaWAN and allows easy access to all pins via 2.54mm pitch headers. RAK4630 WisDuo Stamp Module – This module supports both LoRa/LoRaWAN and BLE 5.0, and comes with RUI V3 (RUI3) firmware. It can be deployed as an […]

April 11, 2022May 5, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Maple Eye ESP32-S3 board offers 2MP camera, microphone, and two LCD displays

AnalogLamb Maple Eye ESP32-S3 is a WiFi and Bluetooth connected board based on ESP32-S3 dual-core Xtensa LX7 microcontroller and equipped with one 2MP camera, one microphone, and two LCD displays placed on each side of the board. Those features, plus 8MB of flash and an 8 MB Octal PSRAM, allow the board to make good use of ESP32-S3 AI instructions through the ESP-DL library found in ESP-WHO framework in order to speed up face detection and recognition algorithms, or for audio processing. Maple Eye ESP32-S3 specifications: Wireless module – ESP32-S3-WROOM-1 module with ESP32-S3 dual-core Xtensa LX7 processor @ up to 240 MHz integrating vector instructions for AI acceleration, 512 KB SRAM, 8MB PSRAM & 8MB Octal SPI Flash Storage – MicroSD card interface Displays – 2x 1.3-inch TFT LCD displays, selectable by switch Camera – 2MP OV2640 camera Audio – Digital microphone for VAD (voice activity detection) & ASR (automatic […]

April 7, 2022 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

SmartKnob View is a DIY haptic input knob with WiFi and Bluetooth connectivity

Soon after writing about RoenDi rotary encoder with a built-in color display, readers pointed me to SmartKnob View, a similar-looking project but featuring an ESP32 module for WiFi and Bluetooth connectivity, plus software-configurable end-stops and virtual detents. The latter is enabled through a brushless gimbal motor paired with a magnetic encoder to provide closed-loop torque feedback control. Just like RoenDi, SmartKnob View comes with a 240×240 round color display but adds tactile feedback so you can change the menu when pressing the display. SmartKnob View specifications: Wireless module – LilyGO Tmicro32 Plys based on ESP32-PICO-V3-02 WiFi and Bluetooth LE SoC (May be changed to ESP32-S3-MINI-1 to enable USB HID support, once Arduino core supports it) Display – GC9A01 1.28-inch 240×240 round LCD covered by a 39.5mm watch glass on rotor Motor – BLDC gimbal motor, with a hollow shaft for mechanically & electrically connecting the LCD USB – 1x USB […]

April 5, 2022May 9, 2022 by Jean-Luc Aufranc (CNXSoft) - 14 Comments

Bee Motion Mini board combines ESP32-C3 with PIR sensor

Designed by Smart Bee Designs, the tiny Bee Motion Mini combines an ESP32-C3 wireless RISC-V SoC with a PIR sensor for motion detection reporting over WiFi, Bluetooth LE, or Bluetooh Mesh. The board was designed to be as small as possible to fit into a 3D printed case with a LiPo battery and placed/hidden anywhere you want. Motion detection range is up to 5 meters, and the Bee Motion Mini can connect to services like MQTT, ITTT, or NodeRed to trigger other devices upon motion. Bee Motion Mini specifications: Wireless module – Espressif Systems ESP32-C3-MINI-1 module with ESP32-C3 WiFi and Bluetooth LE 5.0 RISC-V SoC up to 160 MHz, 4 MB embedded flash PIR sensor – Passive infrared motion sensor with dome lens, 5-meter range I/O- UART Tx/Rx for flashing firmware, 3.3V, and GND Misc – BOOT and RESET buttons Power Supply JST PH.20 connector for LiPo battery 3.3V via […]

March 28, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

ESP32 Composite Video Library outputs PAL, SECAM and NTSC, supports LVGL

It’s been possible to use the I2S for video output on ESP8266 and ESP32 chips for years, but aquaticus’ ESP32 Composite Video Library is may simplify the task of outputting PAL, NTSC, or SECAM video signals from any Tensilica-based ESP32 platforms. The library does not require any external hardware, and you can just connect an RCA connector to GPIO25 (I2S data) and GND, plus integration with the LVGL library makes it easy to create graphical user interfaces as showcased with the captures below. The library supports grayscale video output (no color at this stage), multiple resolutions from 384×288 to 720×288 at up to 25 or 30 Hz, six different pixel clocks for PAL/SECAM and NTSC, as well as six framebuffer formats with namely RGB565, RGB332, Grey 8 bits/pixel, Grey 4 bits/pixel, Monochrome 1 bit/pixel, and LVGL monochrome 1 byte/pixel. You’ll find the source code for the ESP32 Video Composite […]

March 18, 2022 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

1.51-inch transparent OLED display works over GDI or SPI interface

We’ve seen transparent, see-through displays at least since 2010 for retail applications, and over the years, these types of transparent displays or variants have made it to consumer devices like smartwatches and notch-free smartphones. But I don’t think I had ever seen transparent displays for the maker market, and DFRobot Fermion is 1.51-inch transparent OLED display with 128×64 resolution that is connected to the host MCU via SPI or GDI (General Display Interface) interface. Fermion specifications: 1.51-inch transparent OLED display with blue pixels based on SSD1309 driver Resolution – 128×64 (transparent part: 128×56) Display interface – 8-bit 68xx/80xx Parallel, 3-/4-wire SPI, I2C Adapter Interface – SPI, GDI Operating Voltage – 3.3V Dimensions Screen Size – 41.92 x 27.08mm Display Area – 35.05 x 15.32 mm Pixel Pitch – 0.274 x 0.274mm Pixel Size – 0.254 x 0.254mm Adapter Size – 18 x 28mm/0.71 x 1.10inch Temperature Range – -40~70°C There […]