esp32 News - Page 7 of 68 - CNX Software

January 8, 2024 by Kumpee Teeravech - 2 Comments

Review of Elecrow’s 3.5-inch and 7.0-inch ESP32 display modules using Arduino programming

Using the ESP32 7.0-inch display as a dashboard

Hello, I’m excited to review the ESP32 display modules and HMI touchscreens from Elecrow with sizes ranging from 2.4 to 7.0 inches. For this review, Elecrow kindly provided me with both 3.5-inch and 7.0-inch models. While their screens differ in size, both modules share several components, such as the ESP32 microcontroller, making them adaptable options for a variety of projects. The Elecrow 7.0-inch display module is powered by the ESP32-S3-WROOM-1-N4R8 module equipped with an ESP32-S3 dual-core LX6 32-bit microprocessor, 4 MB of flash, 384 kB of ROM, and 512 kB of SRAM. This microcontroller supports both WiFi and Bluetooth for wireless communication. The 7.0-inch display itself is a capacitive touch screen with a resolution of 800×480 pixels. The display is controlled by the EK9716BD3/EK73002ACGB driver and is compatible with LVGL for additional functionality. In the case of the 3.5-inch display module, the main difference is the use of the ESP32-WROOM-32-N4 […]

January 7, 2024 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

ESPHome compatible “Smart Powermeter” supports up to 6 CT clamps

J.G.Aguado’s “Smart Powermeter” is an ESP32-S2 board with a 2.9-inch e-paper display designed to measure power consumption through up to six CT clamps, or Current Transformer clamps, that are each attached to one of the AC lines of a house or appliance. I used an MT87 Digital Clamp Multimeter nearly 10 years ago to easily and safely measure the power consumption of a whole house by simply clamping it on one of the cables outside and reading the results on the display. The Smart Powermeter works in the same way but can perform measurements for up to six devices, and besides seeing the results on the display the ESP32-S2 can also send the data to the cloud or local server for data gathering and analysis using ESPHome or Arduino firmware. Smart Powermeter specifications: Wireless module – ESP32-S2-MINI-1-N4R2 SoC – Espressif ESP32-S2FH4 CPU Single-core 32-bit LX7 microcontroller @ up to 240 […]

January 5, 2024January 5, 2024 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Watch ESP32’s GPIO status in real-time in a web browser

GPIOViewer is an open-source Arduino library allowing users to monitor the GPIO pins status of their ESP32 board in real-time in a web browser for troubleshooting or fun. It’s different than the Wokwi ESP32 simulator that works entirely in a web browser since the GPIOViewer library sends GPIO status data of the actual hardware over WiFi to display the pin status as they change in a page rendered in a web browser from a choice of popular ESP32 development boards. The GPIOViewer library relies on the ESPAsyncWebServer Async web server for ESP8266 and ESP32 and the AsyncTCP asynchronous TCP library for ESP32 microcontrollers. The first two must be manually downloaded and installed, and the latter can be installed directly from the Arduino IDE’s Library Manager by searching for it. GPIOViewer has a 50 KB footprint, works with digital, analog, and PWM, and supports various ESP32-VROOM-32 development boards, Olimex ESP32-EVB and […]

December 31, 2023December 31, 2023 by Jean-Luc Aufranc (CNXSoft) - 18 Comments

2023 Year in review – Top 10 posts, statistics, and what to expect in 2024

It’s the last day and last article of the year, so we will look at some highlights of 2023, some traffic statistics on the CNX Software website, and speculate what interesting developments may happen in 2024. Looking back at 2023 The semiconductor shortage that had happened since 2020 started to fade away in early 2023, and supplies for most electronics components and devices seem to be adequate at this time, so that was a bright spot this year, and hopefully, it will stay that way in 2024 despite geopolitical tensions. We did not have any super exciting new Arm application processors from Rockchip, Amlogic, or Allwinner announced this year, although the Amlogic S928X penta-core Cortex-A76/A55 CPU started to show up in some 8K TV boxes. The launch of the Raspberry Pi 5 SBC with a Broadcom BCM2712 quad-core Cortex-A76 processor was probably the main highlight for Arm on this side […]

December 27, 2023 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

LILYGO T4-S3 board combines 2.41-inch AMOLED touchscreen display with ESP32-S3R8 microcontroller

LILYGO T4-S3 is yet another ESP32-S3 board with an integrated display, but the main difference here is the 2.41-inch AMOLED touchscreen display with brighter colors than typical TFT displays. It’s actually not the first ESP32-S3 board with an AMOLED display from LILYGO as we previously covered the T-Track and T-Display-S3 AMOLED boards from the company, but the new T4-S3 has a larger 2.41-inch display with touchscreen function and an aspect ratio that may make it more suitable for a wider range of HMI applications. LILYGO T4-S3 specifications: SoC – Espressif ESP32-S3R8 CPU – Dual-core Tensilica LX7 microcontroller up to 240 MHz with vector instructions for AI acceleration Memory – 8MB PSRAM Wireless – WiFi 4 and Bluetooth 5.0 LE + Mesh connectivity Storage – 16MB SPI flash, MicroSD card socket Display – 2.41-inch RGB AMOLED touchscreen display with 600×450 resolution (QSPI controller) with 800cd/m2 brightness, 36.2 x 48.96mm active […]

December 27, 2023December 27, 2023 by Jean-Luc Aufranc (CNXSoft) - No Comments

TTS-20 Pro laser engraver review

TwoTrees TTS-20 Pro 20W is a compact, lightweight laser engraver that can be used with wood, plastic, leather, and metal. It can either be used for businesses that want to start producing items or schools that want students to learn how to create pieces, whether it’s cutting work or various engraving, the TTS-20 Pro 20W laser engraving machine is easy to use and safe. TTS-20 Pro laser engraver specifications The TTS-20 Pro laser engraver features a large lightweight aluminum frame with a working area of 418 x 418 mm (external dimensions: 695 x 620 x 125 mm). It comes with a 20 Watts laser module with a 0.08 mm accuracy and supports up to 30,000 mm/min engraving speed. The controller supports either a USB connection to a host computer or engraving from a file on a microSD card. The laser engraver also ships with air assist which will deliver cleaner […]

December 27, 2023December 27, 2023 by Debashis Das - No Comments

MEMENTO is an ESP32-S3-based, CircuitPython or Arduino programmable DIY camera module

Adafruit’s new MEMENTO – Bare Board Camera module is powered by the ESP32-S3 and can be programmed with CircuitPython or Arduino. The module includes a camera with an OV5640 sensor which features auto-focus capabilities and the board includes a 1.54″ 240×240 Color TFT to display the images. Previously we have covered many ESP32-based camera modules like the TinyML-CAM, the Arduino Nicla Vision, TTGO T-Camera, and many other camera modules that feature the OV5640 sensor you can check those out if interested. Features and Specifications of the MEMENTO ESP32 Camera Module: Processing and Connectivity ESP32-S3 Module Dual-core 240MHz Tensilica processor 8 MB Flash, 2 MB PSRAM WiFi and BTLE capabilities Camera and Display OV5640 Camera Module 5MP sensor 72-degree view Autofocus JPEG encoder 1.54″ Color TFT Display with 240×240 resolution Storage – MicroSD card slot (SPI) Ports and Expansion Two Digital/Analog Stemma Ports – JST PH-3 connectors for A0, A1, power, […]

December 22, 2023December 22, 2023 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

SONOFF iPlug S60 – A $10.9 compact WiFi smart socket with built-in energy monitoring function

SONOFF iPlug S60 is a compact ESP32-C3-based WiFi smart socket with built-in energy monitoring support and available with either Type E/F or Type G prongs for respectively European and British markets, as well as other countries using those types of sockets. ITEAD has manufactured home automation devices that measure power consumption for years, such as the SONOFF POW switch directly connected to the mains or the SONOFF S31 smart socket, but those are/were much larger devices, and the new SONOFF iPlus S60 is fairly small and barely larger than some other smart sockets that lack an energy monitoring function, whiling handling up to 16A or 4,000W at 220-250V. SONOFF iPlug specifications: Wireless MCU – ESP32-C3 RISC-V microcontroller with 2.4GHz WiFi 4 802.11b/g/n S60TPG Plug type – Type G (UK) Input – 250V, 50/60Hz, 13A max Max load – 3,250 Watts Dimensions – 58 x 58 x 42 mm Weight – […]