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The S100 Master - ESP-WROOM-02 Module is a certified Rhomb.io module that delivers highly integrated Wi-Fi solution to meet users’ continuous demands for efficient power usage, compact design and reliable performance in the Internet of Things industry.
This module has been build around the ESP-WROOM-02 module from Espressif. Its complete and self-contained Wi-Fi networking capabilities can be controlled easily by AT commands through the UART interface. We have added an USB to UART bridge to facilitate the connection to a computer and to easily program and debug the module.
The S100 Master - ESP-WROOM-02 Module integrates a printed circuit antenna with its switches, RF balun, power amplifier, low noise receive amplifier and filters, all of them adjusted to get the best RF performance. The ESP-WROOM-02 is a FCC and CE certified module and you can use it to develop it straight into consumer products.
The S100 Master - ESP-WROOM-02 Module mounts the well-known ESP-WROOM-02 module, which integrates the Espressif ESP8266EX SoC. With the complete and self-contained Wi-Fi networking capabilities, this Rhomb.io module can perform as a host for standalone applications. The ESP8266EX chip is a low-power 32-bit MCU with TCP/IP network stacks, 10-bit ADC and HSPI/UART/PWM/I2C/I2S interfaces embedded. ESP-WROOM-S2 has a 2 MB SPI flash connected to HSPI, working as SDIO/SPI slave, with the SPI speed being up to 8 Mbps.
As said previously, the Module can be controlled easily by AT commands through the UART interface, or connecting it to a computer through USB. I2C and SPI interfaces are also accesible, and a bunch of GPIOs, interruptions and PWM signals make their way to the Rhomb.io connectors.
The module implements TCP/IP, full 802.11 b/g/n WLAN MAC protocol and Wi-Fi Direct specification. It supports not only basic service set (BSS) operations under the distributed control function (DCF) but also P2P group operation compliant with the latest Wi-Fi P2P protocol. Low level protocol functions are handled automatically by the integrated ESP8266EX.
|Communication protocols||Wi-Fi 802.11 b/g/n|
|Frequency range||2.4 GHz ~ 2.5 GHz (2400 MHz ~ 2483.5 MHz)|
|Operating voltage||2.8V or 3.3V|
|Operating current||Average: 80 mA|
|Wi-Fi mode||Station/SoftAP/SoftAP + Station|
|Firmware upgrade||UART Download / OTA (via network) / Download and write firmware via host|
|Software development||Supports Cloud Server Development / SDK for custom firmware development|
|Network protocols||IPv4, TCP/UDP/HTTP/FTP|
|User configuration||AT Instruction Set, Cloud Server, Android/iOS app|