ESP8266 SDK 1.1.0 is Now Released Under an MIT License

ESP8266 is the now famous dirt-cheap Wi-Fi SoC used for IoT applications. It can be used by hobbyists and companies alike. But for the later, there was a licensing issue as Espressif ESP8266 SDK was initially released under the GPLv3 license. GPL code is great and lots of open source projects are released under the most common open source license. But since proprietary, closed source software has still its place in the market place, some other more permissive licenses such as LGPL are used for library, and Android for example has an Apache License 2.0. So previously, if you developed an application using ESP8266 SDK, you’re code would have to be GPL too, since the license is viral. It would also cause issues if you had released your application under an Apache or MIT license. But now, all is well, as Espressif released ESP8266 SDK 1.10 under an MIT license, […]

Espressif WROOM WiFi ESP8266 Modules are FCC and CE Certified

Espressif, the company behind ESP8266 (EX) Wi-Fi chip for IoT applications, has now opened store on Taobao, where they sell WROOM-02 and WROOM-02 modules based on ESP8266EX with FCC, CE, TELEC, and SRRC certifications. WROOM-01 has some soldered headers that make it easier to use for hobbyists and prototyping, while WROOM-02 is more compact, and should be more suitable to include in your own products. But otherwise, they share about the same specifications: SoC – Espressif Systems ESP8266EX 32-bit RISC processor @ 80 MHz with integrated WiFi Wi-Fi – 802.11 b/g/n with STA/AP/STA+AP operation modes Header – 2x 18-pin headers with SDIO 2.0, GPIOs, SPI, UART, GND and 3.3V pins Dimensions – 11.5mm x 11.5mm Temperature Range – -40C ~ 125C Certifications – FCC, CE, TELEC, and SRRC The company can also provide “hardware reference design, antenna design, and SDK for secondary development”, but you’re likely to find most of […]

Olimex ESP8266-EVB Wi-Fi Evaluation Board Includes a Relay, an UEXT Connector

Olimex announced open source hardware ESP8266 modules last month, and the company has just announced the availability of ESP8266-EVB board with an ESP8266 module, a relay, an UEXT connector for other compatible Olimex modules, and headers for access to GPIOs. ESP8266 evaluation board specifications: MOD-WIFI-ESP8266-DEV Wi-Fi module with soldered connectors Female connectors for MOD-WIFI-ESP8266-DEV 10A/250VAC Relay Expansions 16-pin header (CON3) with access to some GPIOs, ADC, SDIO, RESET, and power signals. UEXT connector to connect modules and sensors from Olimex, or access I2C, UART, SPI, and extra GPIOs Misc – User Button which can also be pressed at boot time to enter bootloader mode for firmware upgrade. Power Supply – 5V/1A recommended; DCDC power converter to 3.3V to supply ESP8266 and UEXT modules with up to 1.5A current Dimensions – 57x50mm (4 mounting holes) You’ll also need 5V power supply, and a USB to serial board (3.3V) in order to […]

Olimex Introduces Open Source Hardware ESP8266 Wi-Fi Modules, Evaluation Board Coming Soon

ESP8266 has become popular as module based on this SoC make it incredibly cheap to add Wi-Fi to all sort of things, the SDK available, and a community has gathered around the solution. Olimex has jumped on the bandwagon, and is now provided two open source hardware ESP8266 modules: MOD-WIFI-ESP8266 which makes it easy to interface to other Olimex boards thanks to its UEXT connector, and MOD-WIFI-ESP8266-DEV with  two rows of 0.1″ connectors and an unsoldered UEXT pad, is better suited if you want to integrate it with your own baseboard, or experiment with a breadboard. An evaluation board called MOD-WIFI-ESP8266-EVB will be launched a little later. Both modules share most specifications: SoC – Espressif Systems ESP8266 32-bit RISC processor with 802.11 b/g/n support(32-pin QFN package), Wi-Fi – 802.112 b/g/n with WEP, TKIP, AES, and WAPI engines, Wi-Fi direct (P2P), and soft-AP. On-board antenna and u.FL connector Expansion MOD-WIFI-ESP8266 – […]

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 […]

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 […]

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 […]

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