espressif News - Page 7 of 7 - CNX Software

November 19, 2014November 19, 2014 by Jean-Luc Aufranc (CNXSoft) - 22 Comments

DWA8 ESP8266 Wi-Fi Module Features a 10-bit ADC, Up to 8 GPIOs, 4 PWM Outputs, and More (Crowdfunding)

Espressif ESP8266 based ESP-01 module may now cost $3, but it’s limited to only two GPIOs, so a Dooao, a Chinese company based in Beijing, has decided to make a new ESP8266 module with more GPIOs, PWM signals, SPI, UART. and a 10-bit ADC. Dooao DWA8 module specifications: SoC – Espressif Systems ESP8266 32-bit RISC processor @ 80 MHz with 120KB RAM (40KB usable), built-in 802.11 b/g/n support. Wi-Fi – 802.112 b/g/n, STA/AP/STA+AP modes, WEP/WPA-PSK/WPA2-PSK security Interfaces: Up to 8x GPIOs Up to 4x PWM SPI (master & slave) up to 40MHz UART with hardware FC up to 4Mbps 1x channel 10bit ADC Power supply – Single 3.3V (2.8 to 3.6V) Power consumption – Max: 70 mA @ 3.3V (230 mW); typical: 12mA; standby < 200 uA; “soft power off” < 10uA. Dimensions – 27.13 x 17 x 2.3 mm (a bit larger than ESP-01) Temperature Range – Operating: -40 […]

November 17, 2014November 17, 2014 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

Add Wi-Fi to Arduino Boards for $3 with ESP8266 Wi-Fi Serial Module

There has been some buzz around ESP8266 Wi-Fi module, mostly because of its low price, and SDK availability, meaning it could become the Wi-Fi equivalent of ENC28J60 Ethernet module, and that for $5 you could potentially add Wi-Fi to your Arduino board for example. Since then, the price has come down even further, and if you are prepared to buy 5 pieces, you can now get the module for less than $3 / piece shipped, alternatively a single module costs $4, and a complete Wi-Fi + Arduino Uno (clone) kit goes for $15. A community has also been built around the chip, and a several project have been made with Arduino boards and ESP8266 module. The best way to find information is to go to ESP8266 community forum, as well as read the Wiki on github. There’s currently a GCC toolchain for Espressif Systems ESP8266, open source tools for working […]

August 28, 2014November 23, 2014 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

ESP8266 WiFi Serial Module Costs Just $5

Wi-Fi is great because it’s ubiquitous, and rather fast for a wireless standard. However, it drains batteries fast, and Wi-Fi modules are usually much more expensive than Bluetooth modules for instance. There’s not much that can be done with regards to power consumption, but thanks to ESP8266 module, it’s now feasible to add Wi-Fi to your Arduino board, or others, for just $5 including shipping on Aliexpress, but SeeedStudio also have it for $6.95. If you buy 1,000 pieces, it goes down to about $3 per unit. As reported by Hackaday, this module embeds ESP8266 SoC which takes care off all IP stacks, a bit like Texas Instruments CC3000 SoC, but it’s just much cheaper. Here are some of the specifications of the module (and processor): SoC – Espressif Systems ESP8266 32-bit RISC processor with 802.11 b/g/n support(32-pin QFN package), Interfaces: SDIO 2.0, SPI, UART, I2S Wi-Fi – 802.112 b/g/n […]