esp32 News - Page 59 of 80 - CNX Software

November 9, 2020November 9, 2020 by Jean-Luc Aufranc (CNXSoft) - 19 Comments

$6 WT32-ETH01 is a Tiny ESP32 board with Ethernet

Espressif Systems ESP32 processor supports WiFi, Bluetooth, and Ethernet connectivity. There are only a few boards coming with an Ethernet RJ45 jack out of the box including esp32MX-E ESP32 board, TTGO T-Internet-POE, and Olimex ESP32-Gateway board among others. Those boards are fine, but they sell for $16 and up, so if you’d like a cheaper and tinier ESP32 board with Ethernet, Wireless Tag WT32-ETH01 may be an option for projects not requiring PoE support. WT32-ETH01 board specifications: Wireless Module – Wireless Tag WT32-S1 based on ESP32 dual-core WiSoC with 4MB flash, on-board antenna Connectivity 10/100M Ethernet via LAN8720A transceiver 2.4 GHz 802.11b/g/n WiFi 4 up to 150 Mbps Bluetooth 4.2 BR/EDR and LE Expansion – 2x 13 through holes and castellated holes with GPIOs, I2C, SPI, 2x UART, EN, LINK, 5V, 3.3V, and GND signals Power Supply – 3.3V or 5.5V via headers, minimum 500 mA; typical operating current: 80 […]

November 6, 2020November 8, 2020 by Jean-Luc Aufranc (CNXSoft) - 72 Comments

Giveaway Week – M5Stack Atom Echo ESP32 Speaker

I reviewed M5Stack Atom Echo Bluetooth speaker powered by ESP32 earlier this year, and that will be the fifth prize of Giveaway Week 2020. It’s very much like a (low-quality) Bluetooth speaker, but you can program it with the Arduino IDE to do whatever you want. There’s also a Grove connector and I/O headers to control external modules. There’s no battery, so a USB-C cable is needed for power. To enter the draw simply leave a comment with your country and whatever else you’d like to say. If the country is missing, I’ll consider the entry void. Other rules are as follows: Only one entry per contest. I will filter out entries with the same IP and/or email address. Contests are open for 48 hours starting at 11 am (Bangkok time) every day. Comments will be closed after 48 hours. If comments are open, the contest is still going on. […]

October 28, 2020October 29, 2020 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

ESP32-S2 board targets battery-powered applications with 30uA deep sleep power consumption

ESP32-S2-DevKit-LiPo vs ESP32-S2-WROVER-Devkit-LiPo

A few months ago, Olimex unveiled renders of ESP32-S2-Devkit-LiPo WiFi board that was supposed to consume as little as 2uA in sleep mode, follows ESP32-S2-Saola-1 board form factor and pinout, and adds an ultra-efficient circuitry to support LiPo batteries. The good news is that Olimex has now launched two versions of their ESP32-S2 board optimized for battery-powered applications with ESP32-S2-DevKit-Lipo and ESP32-S2-WROVER-DevKit-Lipo (with 2MB PSRAM) going for 5.56 Euros and 6.36 Euros respectively. ESP32-S2-DevKit-LiPo specifications: Wireless module: ESP32-S2-DevKit-LiPo – ESP32-S2-WROOM with Espressif ESP32-S2 single-core 32-bit LX7 microprocessor up to 240 MHz with 128 KB ROM, 320 KB SRAM, 16 KB SRAM in RTC, 4MB SPI flash ESP32-S2-WROVER-Devkit-LiPo – ESP32-S2-WROVER – same as above plus 2MB PSRAM Wireless connectivity – 2.4 GHz 802.11 b/g/n WiFI 4 up to 150 Mbps Expansion – 2x 20-pin I/O headers with SPI, I2S, UART, I2C, touch sensors, PWM, etc… (pin-to-pin compatible with ESP32-S2-SAOLA-1) Debugging – […]

October 27, 2020October 27, 2020 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Oplà IoT Kit is Arduino’s first open programmable IoT platform

Arduino is well-known for its maker boards and shields that are sometimes sold as part of kits to experiment with electronics. Arduino Oplà IoT kit is a little different as it looks more like an actual consumer product once assembled. Powered by an Arduino MKR WiFi 1010 board, it is designed to make getting started with IoT easy for beginners, while still allowing more advanced users to customize and hack their smart home applications. Arduino Oplà IoT Kit is comprised of several hardware components: MKR IoT carrier with a 1.2-inch OLED color display, onboard environmental sensors (temperature, humidity, pressure, light, and proximity), IMU sensor, Grove connectors, two 24V relays, and five capacitive touch buttons. Arduino MKR WiFi 1010 board powered by Microchip SAMD21 Cortex-M0+ MCU and equipped with a 2.4 GHz WiFi 4 and Bluetooth 4.2 module based on ESP32 chip. Sensors – PIR motion sensor and moisture sensor A […]

October 23, 2020October 23, 2020 by Jean-Luc Aufranc (CNXSoft) - No Comments

E3K all-in-one wireless bio-sensing platform supports EMG, ECG, and EEG sensors (Crowdfunding)

Over the year, The maker community has designed several platforms to monitor vital signs with boards like Healthy Pi v4 or HeartyPatch both of which are powered by an ESP32 WiFi & Bluetooth wireless SoC. WallySci has designed another all-in-one wireless bio-sensing platform, called E3K, that also happens to be powered by Espressif Systems ESP32 chip, and can be connected to an electromyography (EMG) sensor to capture muscle movements, an electrocardiography (ECG) sensor to measure heart activity, and/or an electroencephalography (EEG) sensor to capture brain activity. The board also has an extra connector to connect a 9-axis IMU to capture motion. E3K main board which the company refers to as “Data Communication and Processing Unit” (DCPU) comes with the following specifications: Supported wireless board – ESP32-DevKitC with ESP32-D0WD-V3 dual-core 32-bit LX6 microprocessor, up to 240 MHz, Integrated 520 KB SRAM, 16 MByte SPI flash. 2.4 GHz WiFI 4, and Bluetooth […]

October 20, 2020 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

SwarmDrive is an ESP32 motor driver board for brushless motors (Crowdfunding)

Netherlands based NickStick BV has developed a motor driver board powered by an ESP32 dual-core WiFI and Bluetooth module and capable of controlling brushless DC motors. The SwarmDrive board targets users who want to start experimenting with motor control, and learn about commutation strategies, PID for balance plateau or balance robots, cartesian gantries and spatial navigation, drive by wire and wireless, swarm intelligence experiments, etc. SwarmDrive specifications: Wireless module – Espressif Systems ESP32-WROOM-32D module with ESP32 dual-core processor @ 240 MHz, 4 Mbit flash Connectivity 2.4 GHz 802.11 b/g/n WiFi up to 150 Mbps Bluetooth v 4.2 BR/EDR and BLE Motor Control L6234 triple half-bridge motor driver, 5 A peak current 3-pin terminal block for motor output 3x enable pins are broken out to a bridging connector Programming and debugging – Micro USB serial port via USB to UART bridge, Misc – Boot and reset push-buttons Power Supply Supply Voltage – […]

October 16, 2020October 16, 2020 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

ESP32 CNC Controller Board Supports Grbl Arduino Firmware

Grbl_ESP32 CNC development board is a breakout board for NodeMCU 32S board that also takes three stepper motor drivers, and designed to run Grbl open-source Arduino firmware to control wireless CNC machines. Grbl_ESP32 CNC breakout board specifications: Socket for NodeMCU 32S board with ESP32 WiFi and Bluetooth dual-core SoC 3 sockets for stepper motor drivers such as TI DRV8825 types and others. Micro-step selection jumpers included. MicroSD card socket Home/Limit switch connections for XY and Z axes. Control switch input connections for Feed Hold, Cycle Start, Reset, and Door. Spindle output for PWM to control speed. 3A DC-DC power supply to run the ESP32 if it is not connected to USB Grbl CNC firmware was initially developed for the Arduino UNO and basic 3 axis CNC routers around 10 years ago, but has since then been ported to other CPUs and is now found in other types of CNC machines […]

October 6, 2020October 6, 2020 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Petoi Bittle Palm-sized Robot Dog uses Arduino and Raspberry Pi for STEM education (Crowdfunding)

You’ve probably already watched a video featuring Boston Dynamics Spot, a headless robot dog used in various industries including healthcare, public safety, construction, oil & gas, etc.. It could also be yours if you wanted a robotic pet dog at home, as long as you have $75,000 US to spare. Petoi Bittle looks eerily similar, but it’s much smaller as it fits in your palm, and could be yours for $225 on KickStarter as a kit to assemble yourself that you may get as soon as December. Bittle robot dog is designed for STEM education and can be programmed using the Arduino IDE, Python, or even Codecraft visual programming IDE. Bittle is comprised of 4 main hardware components: Plastic parts and fixtures – Body, four legs, head (which can be used to hold Arduino modules), springs, screws, etc… Actuators – 9x P1S servo with a controllable angle of 270 degrees, […]