Espressif Category - Page 64 of 98 - CNX Software

September 1, 2020September 1, 2020 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

M5Stack Launches Core2 ESP32 IoT Development Kit with 2-inch Touch Display

M5Stack has just launched an upgrade to its M5Stack Core development with M5Stack Core2 based on the same Espressif ESP32 WiFI + Bluetooth SoC, but adding capacitive touchscreen support to the 2-inch TFT LCD, as well as a motion sensor and a microphone. The new version also adds 8MB PSRAM, a larger 390 mAh battery, and targets IoT terminals for Smart Home, industrial automation or robotics, STEM Education, and DIY prototyping. M5Stack Core2 specifications: SoC – Espressif ESP32-D0WD-V3 dual-core Xtensa LX6 processor clocked at up to 240MHz with 520KB SRAM, Wi-Fi, and dual-mode Bluetooth connectivity External Memory – 8MB PSRAM Storage – 16MB flash storage, MicroSD card slot up to 16GB Display – 2-inch IPS LCD screen with 320×240 resolution (ILI9342C driver), and touchscreen support (via FT6336U controller) Audio – 1W speaker (1W-0928), SPM4123 microphone, NS4168 I2S power amplifier Antenna – 2.4GHz 3D antenna USB – 1x USB Type-C port […]

September 1, 2020January 2, 2021 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Espressif Unveils ESP32-S2-MINI Modules, ESP32-S3 and ESP32-C3 SoC’s Coming Soon

Espressif Systems has unveiled two new ESP32-S2 WiFi modules part of the new MINI series modules, namely ESP32-S2-MINI-1U with IPEX antenna, and ESP32-S2-MINI-1 with a PCB antenna. The press release also mentions upcoming ESP32-S3 and ESP32-C3 processors with few details. Let’s have a look. ESP32-S2-MINI modules Preliminary specifications: SoC – Espressif ESP32-S2FH4 single-core 32-bit LX7 microcontroller @ up to 240 MHz, RISC-V ultra-low-power co-processor, 320 kB SRAM, 128kB ROM, 2.4 GHz WiFi 4 connectivity, 4MB flash Antenna ESP32-S2-MINI-1 – PCB antenna ESP32-S2-MINI-1U – IPEX antenna connector Dimensions ESP32-S2-MINI-1 – 20 x 15.4 x mm ESP32-S2-MINI-1U – 15.4 x 15.4 x mm The company states the exact processor SKU used in the module is ESP32-S2FH4, but initially I could not find out it differed from ESP32-S2 since it has the same specs include a single-core processor, ULP core, up to 43 GPIOs, and USB-OTG support. It turns out the flash appears […]

August 31, 2020August 31, 2020 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Heart Rate Development Kit Features ESP32 WiSoC, MAX30102 Pulse Oximeter & HR sensor

Arduino ESP32 Heart Rate-Oxygen Level Monitor

LilyGO has launched a fair amount of ESP32 boards with some less common features like Ethernet and OLED Display, cellular connectivity, LoRa & GPS, PoE, watch form factor, and more. Their latest product is somewhat different from their earlier boards with the TTGO Heart rate programming development kit being closer to a reference design since it comes with an enclosure similar to commercial products. The heart rate devkit features ESP32 WiFi and Bluetooth SoC, a small LCD, as well as a Maxim Integrated MAX30102 pulse oximeter and heart-rate sensor. TTGO heart rate development kit specifications: SoC – Espressif Systems ESP32 dual-core Tensilica SoC with WiFi 4 & Bluetooth connectivity Display – 0.96-inch IPS LCD via ST7735 SPI controller Sensors MAX30102 heart rate blood oxygen I2C sensor MPU6050 6-axis accelerometer and gyroscope (I2C) Debugging – Micro USB port via CP2104 USB to TTL bridge Misc -PCF8563 RTC, user button Battery […]

August 31, 2020 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

JPEGDEC is a Faster JPEG Arduino Library Designed for 32-bit MCUs

In order to ensure software compatibility, Arduino libraries are supposed to work on various types of hardware from 8-bit microcontrollers with a limited amount of memory to more powerful 32-bit chips like STM32 Arm Cortex-M MCU or ESP32 dual-core Tensilica WiSoC that can access a larger amount of RAM. This is all good, but in some cases, this may affect performance. Larry Bank noticed this when looking for a JPEG viewers for Arduino and only found ones which sacrificed speed to work on MCUs with very little RAM. So he started to work on JPEDDEC JPEG Arduino library optimized for speed and compatible with any MCU with at least 20K of RAM. Optimizations go beyond just loading more data into memory, as Larry explains in a blog post, the library also performs the removal of stuffed bytes, optimize the Huffman decode and DCT parts, and more. Some of the key […]

August 28, 2020August 28, 2020 by Jean-Luc Aufranc (CNXSoft) - No Comments

RISC-V & ESP32 based TTGO Handheld T-WATCH K210 AIoT DevKit Works with a 9V Battery

TTGO Handheld T-WATCH-K210 RISC-V & ESP32 Devkit

LilyGO TTGO T-Watch K210 AIOT is a rather thick watch development kit based on Kendryte K210 RISC-V AI Processor and ESP32 WiSoC capable of performing AI workloads such as face detection using a USB power source. We first covered the development kit in June, and the company releases some small variants from time to time with the latest being TTGO Handheld T-Watch K210 with basically the same hardware, plus the addition of a handle that adds a power button, and a compartment for a 9V battery to power the watch/devkit. TTGO Handheld T-Watch K210 specifications: SoC – Kendryte K210 dual-core 64-bit RISC-V processor with 8MB RAM, AI accelerators Storage – 16MB flash, MicroSD card slot Display – 1.54-inch capacitive touch IPS screen connected over an 8080 interface Camera – Adjustable 2MP OV2640 sensor with 65-degree lens (optional 120-degree angle lens), AS312 “human” infrared sensor Connectivity – 2.4 GHz 802.11b/g/n WiFi […]

August 4, 2020 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

ESPurna ESP8266 Automation Firmware Gets Support for BME680 Sensor’s Precise Indoor Air Quality Measurements

Bosch BME680 is a 4-in-1 air quality sensor measuring relative humidity, barometric pressure, ambient temperature, and gas (VOC) levels. It’s found in boards such as STM32 based Metriful Sense or Nordic Thingy:91, and Bosch Sensortec published an Arduino library based on “Bosch Sensortec Environmental Cluster (BSEC) Software” to provide precise calculations temperature, humidity, pressure, and indoor air quality (IAQ). BSEC proprietary algorithms can provide indoor air quality data as good as more expensive CO2 sensors according to a recent presentation by the company. Max Prokhorov, lead ESPurna maintainer, and Rui Marinho noticed none of the popular open-source ESP8266 automation firmware including ESPurna, Tasmota, and Esphome supported BME680 sensor just yet. So they decided to work together to add BME680 sensor support via BSEC library to ESPurna firmware, and now it’s very easy to use as you just need to define BME680_SUPPORT=1 before compiling the firmware. You’ll find the now-merged pull […]

July 30, 2020February 21, 2021 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Espressif and Amazon Introduce ESP32-PICO-V3-ZERO Alexa Connect Kit Module

Espressif Systems & Amazon have recently announced ESP32-PICO-V3-ZERO Alexa Connect Kit (ACK) module providing out-of-box connectivity to ACK cloud services, support for features such as Alexa control, “Frustration-Free Setup” and Amazon Dash replenishment for connected devices. The tiny (23 x 16 x 2.3mm) module is based on the company’s ESP32-PICO-V3 System-in-Package (SiP) based on ESP32-V3 dual-core Xtensa LX6 WiFI and Bluetooth SoC, a 4 MB SPI flash, a crystal oscillator, filter capacitors, and an RF matching network. The module supports 2.4 GHz 802.11 b/g/n WiFi, Bluetooth, and Bluetooth Low Energy connectivity and comes with a PCB antenna and a u.FL connector to plug in an external antenna [Update: That should be an RF test connector instead, see comments]. ESP32-PICO-V3-ZERO module interfaces to a host MCU through a UART interface, and to speed-up time-to-market the module comes pre-certified for regulatory certifications such as FCC, CE, SRRC, IC, and RCM. The module […]

July 29, 2020July 29, 2020 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

TTGO T-Lite W5500 ESP32 WiFi & Bluetooth Board Comes with OLED Display, Optional Ethernet Add-on Board

If you like tiny boards with Ethernet, TTGO T-Lite W5500 development board may be an interesting option, as the ESP32 board comes with a built-in OLED, and female headers to connect an Ethernet add-on board called W5500 Gateway Module. LilyGO TTGO T-Lite W5500 specifications: SoC – Espressif System ESP32 dual-core WiFi and Bluetooth SoC with 520KB SRAM Storage – 4MB flash Display – 0.96-inch OLED display (SSD1306 driver) Connectivity 802.11 b/g/n WiFi 4 up to 150 Mbps, and Bluetooth 5.x BR/LE via ESP32 SoC, on-board ceramic antenna or external antenna (selectable with a resistor?) Optional Ethernet via SPI Ethernet board based on Wiznet W5500 USB – 1x USB Type-C port for power and programming via CP2104 USB to TTL chip I/Os 8+6 through holes with GPIOs, SPI, ADC, Touch, 5V, 3.3V, GND Operating voltage – 2.7V-3.6V Misc – Boot & Reset button, 40MHz crystal oscillator Power Supply – 5V/1A via […]