Boards/Backplanes

WiFi module complies with IEEE 802.11b/g/n

30th June 2017
Alice Matthews
0

Transmitting and receiving in the 2.4 GHz frequency band, Bridgetek's CleO35-WiFi module is compliant with the commonly used IEEE 802.11b/g/n WiFi standards. With the objective of enabling the control and monitoring of smart devices within the domestic environment, it can achieve 20dBm output power when in 802.11b mode. Support for WPA and WPA2 wireless security safeguards against unauthorised access to data streams.

Drawing off a 3.3V supply, this module is supplied with a standard 16 pin 0.5mm pitch FFC cable that allows it to be connected directly to CleO35 board (with 3.5" TFT display) or to the CleO-IO shield so that it can be utilised by the larger CleO50 board (with 5" TFT display). Core to the module’s operation is an Ai-Thinker ESP-12S WiFi subsystem. This is based on the compact, highly integrated 32-bit ESP8266 processor - with antenna switch, RF filters, power amplifier, low noise receive amplifier, digital peripheral interface and power management functions all included.

In addition, the company has introduced a new development module for its FT93x series of 32-bit performance-optimised microcontroller units (MCUs). The compact (66.8x85mm), streamlined and simple to use MM930Lite module complements Bridgetek’s existing suite of development hardware and software tools. It provides engineers with a platform upon which they can evaluate the performance parameters of the MCU, carry out initial prototyping, or even construct sophisticated systems from the ground up within a short period of time. Among the applications for which the MM930Lite is most suited are building security/door entry mechanisms, home automation infrastructure, industrial control implementations and embedded multimedia equipment.

As well as its MCU, the module features 8MBytes of embedded Flash memory resource and a Micro SD card port for accommodating external memory. A broad range of interfaces are incorporated too. These include a Micro-B USB port for connecting to a USB host or delivering power to the module (as an alternative to the 5VDC supply connector), a 2.54mm pitch dual entry female header in a 2x8 pin arrangement, a 2x5 pin 1.27mm pitch female Micro-MaTch connector for software updating purposes, plus a 16 pin 0.5mm pitch FFC/FPC interconnect for SPI master interfacing (to support attachment to TFT display modules).

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