Arduino News - Page 29 of 116 - CNX Software

April 21, 2023April 21, 2023 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Offline voice recognition module supports Arduino programming, custom voice commands

We’ve already covered inexpensive offline voice recognition modules based on US516P6 or TW-ASR ONE microcontrollers that allow people to add smarts to their projects without a network connection for improved privacy and lower latency. Those are great in theory, but at the time (April 2022) documentation was lacking or only in Chinese, and they were fairly hard to use based on some of the comments in my earlier posts. But today, I’ve noticed DFRobot is now selling the “Gravity: Offline Voice Recognition Sensor – I2C & UART” module with support for Arduino programming, and it looks fairly easy to customize as we’ll see further below. Gravity Voice Recognition DF2301QG module specifications: Voice recognition module – WS-2520-TR module with MCU – TBD 121 commonly used fixed voice commands, one-fixed wake word Support for 1 learned wake-word, 17 user-defined commands Audio Output – Built-in speaker and external speaker interface Input – Dual […]

April 20, 2023April 21, 2023 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

ArduPico – An Arduino UNO compatible baseboard for Raspberry Pi Pico

wisdPi ArduPico Raspberry Pi Pico Arduino baseboard

WisdPi ArduPico is an Arduino UNO-shaped baseboard designed for the Raspberry Pi Pico and compatible boards that enables makers to reuse most 3.3V Arduino shields available on the market and also adds for few I/Os and features. ArduPico specifications: Compatible board – Raspberry Pi Pico, Pico H, Pico W, Pico WH, and other Pi Pico compatible board solderable using through holes or castellated holes Expansion Arduino UNO header compatible with a wide range of shields 5-pin and 6-pin headers for additional GPIOs and 3.3V, GND All Raspberry Pi Pico GPIOs are exposed 3.3V only, no 5V tolerant Debugging – SWD header Misc – Pico RESET key, WS2812 RGB LED Power Supply – 7 to 15V DC via DC jack Dimensions – 68.6 x 53.3 x 11.6 mm (Arduino UNO form factor) Weight – 18 grams Compatibility with the Arduino UNO is not 100% percent as, for instance, only three […]

April 18, 2023April 18, 2023 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

PicoMQTT – An MQTT Client/Broker library for ESP8266 and ESP32

PicoMQTT is a lightweight MQTT library for Arduino/PlatformIO optimized for ESP8266 and ESP32. It not only supports the MQTT Client mode like most existing solutions but also the MQTT Broker mode which transforms an ESP8266 or ESP32 board into an MQTT gateway replacing a Raspberry Pi board or an IoT gateway typically used for this task.

The library follows MQTT 3.1.1 specification, supports the publishing and consuming of arbitrary-sized messages, can deliver thousands of messages per second, and supports easy integration with the ArduinoJson library to publish and consume JSON messages.

April 17, 2023April 18, 2023 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

T-HMI ESP32-S3 board comes with an 2.8-inch touchscreen color display, three Grove expansion connectors

ESP32-S3 HMI board resistive touch panel

Lilygo has launched yet another ESP32-S3 board with an integrated display, but the T-HMI has a larger 2.8-inch color display and a resistive touch panel suitable for HMI (Human Machine Interfaces). It is also equipped with three Grove connectors for expansion with sensors or actuators. Like all the recent ESP32-S3 boards from Lilygo, the T-HMI features the ESP32-S3R8 WiFi 4 and Bluetooth MCU with 8MB PSRAM, as well as a 16MB SPI flash, a microSD card slot, a few buttons, and power from USB or a LiPo battery. Lilygo T-HMI board specifications: Wireless MCU – Espressif Systems ESP32-S3R8 dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration, 512KB RAM, 8MB PSRAM, wireless connectivity Storage – 16MB SPI flash, microSD card socket Connectivity via ESP32-S3 2.4 GHz 802.11 b/g/n Wi-Fi 4 with 40 MHz bandwidth support Bluetooth Low Energy (BLE) 5.0 connectivity with long-range support, up […]

April 14, 2023 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Embedded Open Source Summit 2023 schedule – Zephyr OS, Security, IoT, Embedded Linux, and more

The Linux Foundation has just announced the full schedule for the Embedded Open Source Summit, which will take place on June 27-30, 2023 in Prague, Czech Republic, as well as virtually starting on June 26. Over 175 sessions, birds of a feather (BoF) tracks, and workshops related to embedded and open-source innovation will be presented at the event itself comprised of six micro conferences: Automotive Linux Summit Europe, Embedded IoT Summit, Embedded Linux Conference, LF Energy Embedded Summit, Safety-Critical Software Summit, and Zephyr Project Developer Summit. Even though I’m not going to attend personally, I’ve gone through the schedule to create my own little virtual schedule with some sessions relevant that should be interesting to me and hopefully to CNX Software readers. Monday, June 26 (Virtual sessions) The first day of the event will have a Yocto Dev training in the morning, and a bunch of virtual sessions that are […]

April 13, 2023April 14, 2023 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Challenger RP2040 board gets DWM3000 UWB module for indoor positioning, up to 10 Mbps data transfers

The Challenger RP2040 UWB board features a Raspberry Pi RP2040 microcontroller combined with a DWM300 UWB (Ultra-Wide Band) module in the Adafruit Feather form factor and is designed for indoor positioning and ranging applications with an up to 10-centimeter accuracy, and data transfers up to 10 Mbps. The first Challenger RP2040 board was introduced in 2021 with an ESP8285 WiFi chip, iLabs (Invector Labs) shortly followed up with the Challenger RP2040 LoRa with an RFM95W LoRa module, and they also made models with NFC and cellular connectivity. The Swedish company has now just introduced their latest Challenger board with the Challenger RP2040 UWB leveraging UWB technology. Challenger RP2040 LoRa board preliminary specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ MCU @ 133MHz with 264KB SRAM Storage – 8MB flash Wireless module – Qorvo DWM3000 UWB module connected via SPI Chip – Qorvo DW3110 ultra-wideband (UWB) transceiver IC, compliant with IEEE […]

April 12, 2023 by Jean-Luc Aufranc (CNXSoft) - No Comments

T-Display-S3 AMOLED – An ESP32-S3 board with a 1.9-inch AMOLED Display

There are plenty of ESP32 series boards with display usually TFT or E-Ink, but I don’t think I’ve ever seen one with an AMOLED display and that’s what Lilygo is offering with the “T-Display-S3 AMOLED” board equipped with an ESP32-S3 WiFi and Bluetooth microcontroller and a 1.9-inch AMOLED display. The new board is almost the same as the T-Display-S3 board introduced last year, except for a display with higher resolution, more vibrant colors, and a wider viewing angle, plus a 3D antenna, and a few extra I/Os. T-Display-S3 AMOLED specifications: Wireless MCU – Espressif Systems ESP32-S3R8 dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration, 512KB RAM, 8MB PSRAM, wireless connectivity Storage – 16MB flash Connectivity via ESP32-S3 2.4 GHz 802.11 b/g/n Wi-Fi 4 with 40 MHz bandwidth support Bluetooth Low Energy (BLE) 5.0 connectivity with long-range support, up to 2Mbps data rate. 3D antenna […]

April 10, 2023April 10, 2023 by Jean-Luc Aufranc (CNXSoft) - No Comments

Adafruit Feather RP2040 with RFM95 LoRa Radio launched for low power long range IoT communication

Adafruit Feather RP2040 RFM95 LoRa Radio

Adafruit has designed a new variant of the Feather RP2040 board with the “Adafruit Feather RP2040 with RFM95 LoRa Radio” featuring a 900 MHz RFM95 “RadioFruit” module and following the “Adafruit Feather RP2040 with DVI Output Port” that we covered last week. The board ships with 8 MB of QSPI flash, supports USB-C or LiPo battery power, is offered in the familiar Feather form factor, and the built-in RFM95 module supports 433 MHz, 868MHz, and 915MHz frequencies, selectable by firmware, for global coverage. Adafruit Feather RP2040 with RFM95 LoRa Radio specifications: MCU – Raspberry Pi RP2040 dual-core Arm Cortex M0+ microcontroller @ 133 MHz with 264 KB RAM Storage – 8MB SPI flash RFM95 LoRa wireless module Semtech SX127x LoRa transceiver Frequency bands – License-free ISM bands: ITU “Europe” @ 433MHz and ITU “Americas” @ 900MHz. (CNXSoft: it looks 900 MHz here means 868 MHz (EU) and 915 MHz (US), […]