AMB2621 Bluetooth Smart Module is easy to integrate says Amber Wireless
At this year’s Hannover Messe, Amber Wireless, a Würth Elektronik eiSos Group company, unveils a compact and energy-saving wireless module, the AMB2621 Bluetooth Smart module.
Besides standard control via UART (universal asynchronous receiver transmitter) commands, the module can be connected to smartphones or other devices to form a module. This is possible by initialising the module’s “peripheral only” operating mode.
AMB2621 is a 2.4GHz Bluetooth low energy (BLE) wireless module based on the Bluetooth Smart 4.2 standard. It measures 11 x 8.0 x 1.8 mm, and is offered with or without integrated antenna. A Nordic Semiconductor nRF52832 SoC is used, which has a 32-bit ARM Cortex-M4 CPU and a 512kbyte flash memory. The AMB2621 firmware supports the peripheral only operating mode, allowing easy expansion of existing hardware with the Bluetooth low energy interface. In its default state, this mode provides static key pairing and a transparent UART interface. Customers can install and use the module without having to configure it beforehand and without significantly changing the interface in their application, explains Amber Wireless. Patrick Becker, head of sales at Amber Wireless said: “We purposefully introduced the option of operating the wireless module as ‘peripheral’ in the sense of the Bluetooth protocol, as this covers around 90 per cent of applications. Devices are equipped with this kind of wireless module so you can connect with them. This means that pairing is initiated from a mobile device, for example to control building technology.”
The peripheral only operating mode means the AMB2621 Bluetooth Smart module is especially energy-saving, as the UART interface is only active once a wireless connection is established. Uncomplicated static passkey pairing is used as a security device as in the hands-free system in the car. The AMB2621 Bluetooth Smart module is suitable for all manufacturers to connect electronic control with a mobile device, whether this control has been on the market for years or is just in the development phase, says Amber Wireless. AMB2621 with peripheral mode is recommended whenever the module itself does not initiate any connections (i.e. is only contacted from the outside) or no user interface can be implemented, as the rest of the product is already ready.
Visit Amber Wireless at the Hannover Messe – Hall 8, stand D35.
