Espressif Category - Page 16 of 94 - CNX Software

February 20, 2024February 19, 2024 by Debashis Das - 3 Comments

Waveshare ESP32-S3 4G dev boards feature LTE Cat-1, 2G, and camera support

Waveshare has recently launched two new ESP32-S3 4G dev boards – the ESP32-S3-SIM7670G-4G and the ESP32-S3-A7670E-4G. These boards support 4G LTE Cat-1, Wi-Fi, Bluetooth, and GNSS, and come with an OV2640 camera, and a battery holder for a 18650 battery. The main difference between the two is that the A7670E module also supports 2G GSM/GPRS/EDGE at 900/1800MHz while the SIM7670G module does not. The board has two rows of I/Os including GPIO, I2C, SPI, ADC, and USB 2.0. It also has a USB-C port for power and programming, a slot for a MicroSD card, and an option to connect an external speaker. There’s a USB switching IC and DIP switch for easily connecting the module to a PC for internet or debugging. Waveshare ESP32-S3 4G Dev Boards Specification: Communication module A7670E 4G – A7670E Cat-1 4G module supporting 4G Cat-1 + 2G networking, GNSS positioning, telephone calls, and SMS. SIM7670G […]

February 19, 2024February 19, 2024 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Esp32_oscilloscope Arduino firmware turns your ESP32 board into a web-based oscilloscope

Arduino ESP32 Web-based WiFi oscilloscope

Bojan Jurca’s “Esp32_oscilloscope” is an open-source Arduino sketch that can transform an ESP32 board into a web-based oscilloscope that works over WiFi. We had also written about the Scoppy project to turn the Raspberry Pi Pico W into a 2-channel oscilloscope, but there’s no reason the more powerful ESP32-series microcontroller could not be used for the same purpose, and Bojan’s Esp32_oscilloscope project does just that and works with ESP32, ESP32-S2, ESP32-S3 and ESP32-C3 boards using the I2S interface for fast data sampling. The project was initially designed to demonstrate the multitasking abilities of the ESP32 microcontroller with Arduino, but this evolved into an ESP32 oscilloscope firmware. It works both with output/PWM and input signals, digital (0 or 1) and analog (0 to 4095) signals, and the web interface shows up to 736 samples per screen although the sampling rate may not be completely constant all the time. To install it […]

February 16, 2024February 17, 2024 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Comparing the latency of various wireless standards

If you’ve ever wondered which wireless standard may deliver the smallest lag (latency) when transmitting small packets, we’ve now gotten an answer thanks to Scott at Electric UI who benchmarked various wireless links in common MCU development boards. More specifically the following hardware and wireless standards were tested: SiliconLabs 10×0-GM RF+8051 microcontroller with 240–960 MHz EZRadioPRO transceiver running SiK firmware HopeRF RFM95W LoRa module (on an Adafruit Breakout board) connected to an STM32F429 MCU Nordic Semi nRF24L01 2.4GHz transceiver module ESP32 board for ESP-NOW and WiFi testing is shown as ESP32 WS (WebSockets) or ESP32 TCP in the chart below. Raspberry Pi boards were also used for comparison ESP32-C6 board for 802.15.4 transfers (Thread) ESP32 and HC-05 modules for Bluetooth SPP (Serial Port Profile) ESP32 board with NimBLE and Bluedroid stacks and nRF52 for Bluetooth LE testing Here are the results for 12 bytes, 128 bytes, and 1024 bytes data transfers. […]

February 13, 2024February 13, 2024 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

SMLIGHT launches Zigbee Ethernet/WiFi coordinators and USB adapters based on TI CC2652P7 or CC2674P10 wireless chips

SMLIGHT SLZB-06p7 SLZB-06p10 Zigbee Ethernet coordinator

SMLIGHT has recently released Zigbee Ethernet/WiFi/USB coordinators and USB dongles based on either Texas Instruments CC2652P7 or CC2674P10 wireless microcontrollers that update on the company’s SLZB-06 Zigbee 3.0 to PoE Ethernet, USB, and WiFi adapter and Silicon Labs EFR32MG21-based SLZB-07 Zigbee 3.0 USB adapter. That’s a total of four new devices with the SLZB-06p7 and SLZB-07p7 based on CC2652P7 and designed to work with vendor-agnostic software such as Zigbee2MQTT and Home Assistant ZHA, and the similar SLZB-06p10 and SLZB-06p10 based on the CC2674P10 whose Zigbee firmware is still under development according to SMLIGHT. SLZB-06p7/SLZB-06p10 Zigbee to Ethernet/WiFi/USB coordinator SLZB-06p7/SLZB-06p10 specifications: Wireless SoCs SLZB-06p7 – Texas Instruments CC2652P7 Arm Cortex-M4F microcontroller @ 48-MHz with 704KB flash, 256KB ROM for protocol and library functions, 8KB of SRAM, integrated +20 dB power amplifier, Bluetooth 5.2 Low Energy, Matter, Thread, Zigbee 3.0 SLZB-06p10 – Texas Instruments CC2674P10 Arm Cortex-M33 microcontroller @ 48 MHz with […]

February 12, 2024February 12, 2024 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

SparkFun Thing Plus – ESP32-C6 board comes with 16MB flash, LiPo battery support

SparkFun has launched yet another ESP32-C6 board with the “Thing Plus – ESP32-C6” based on the ESP32-C6-WROOM-1-N16 module with 16MB flash and a PCB antenna and range of I/Os and power options. The board features 28 through holes with up to 23 multi-function GPIOs and a Qwicc connector for expansion, and supports 5V or LiPo battery power through respectively a USB-C port a 2-pin JST connector combined with a charging chip, and a fuel gauge. SparkFun Thing Plus – ESP32-C6 specifications: Wireless module – ESP32-C6-WROOM-1-N16 MCU – ESP32-C6 32-bit single-core RISC-V microcontroller with 2.4 GHz WiFI 6, Bluetooth 5 LE, and 802.15.4 radio (Zigbee and Thread); Matter-compatible Storage – 16 MB flash PCB Antenna Storage – MicroSD card slot USB – 1x USB Type-C port for power and programming Expansion 12-pin + 16-pin headers with 23x multifunctional GPIOs Up to 7x 12-bit ADC channels Up to 2x UART channels (with […]

February 8, 2024 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

Arduino IDE 2.3 released with the Debug feature now considered stable

Arduino IDE 2.3 has just been released with a range of bug fixes and improvements, but the main change is that the debug feature is not experimental anymore and is now considered stable. Bug fixes include addressing CVE-2023-4863 security flaw (See GitHub for related commits) and based on the wording used in the announcement it looks to be the only one… So the main news is that the Debug feature is now fully incorporated into the IDE. But what is it exactly? The new documentation website explains that Arduino CLI 0.9.0 and Arduino IDE 2.x support “sketch debugging” with openocd server. Arduino also explains it’s currently supported by Arduino boards based on the Mbed core including GIGA R1 WiFi, Portenta H7, Opta, Nano BLE, and Nano RP2040 Connect, and Renesas-based boards such as UNO R4 and Portenta C33 will get support very soon. The company also says they are working […]

February 6, 2024July 31, 2024 by Tomisin Olujinmi - 19 Comments

Tangara is a portable, open-source music player based on an ESP32 MCU (Crowdfunding)

Tangara is a portable music player that is out to make MP3 players cool again. With an iPod-inspired design and an ESP32 module at its core, Tangara presents an open-source and nostalgic way to listen to your favorite music and podcasts. The ESP32-WROVER-E at the core of the music player is the main microcontroller but it also features a co-processor, a Microchip SAMD21, which is responsible for USB communication and power management. We have covered the ESP32-WROVER-KIT, a development kit for the ESP32-WROVER and ESP-WROOM-32 line of modules with a JTAG interface and an LCD. The Tangara music player can output audio through a 3.5mm headphone jack or Bluetooth, although Bluetooth is currently limited to the default SBC codec. Tangara is the brainchild of Australian tech company Cool Tech Zone and is aimed at the portable media player community at large. This is reflected in many of the design choices […]

February 5, 2024February 7, 2024 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

Wiser wireless-to-serial kit eases the debugging and programming of embedded devices (Crowdfunding)

WiSer is a wireless-to-serial communication kit comprised of a USB dongle (WiSer-USB) and a USB TTL debug board (WiSer-TTL) – both built around an ESP32-S2 microcontroller – that allows users to establish a P2P wireless connection between a host computer and a development board or sensor. It works like a typical USB to TTL debug board except it operates over WiFi, and it’s especially useful to debug code, update firmware, log data, or transfer files without a USB cable or even a Wi-Fi router since the connection to peer-to-peer. It looks especially useful when the host and DUT are too far apart, and my review samples are often on another table around 1.5m from the nearest USB port of my laptop, so I could see some use for it myself… WiSer specifications: Wireless SoC – ESP32-S2 Wi-Fi (and Bluetooth) microcontroller USB – 1x USB Type-C port providing a virtual serial […]