The customer had an existing Smart Bluetooth TAG product which required upgrades and the addition of new features.

All new features had to seamlessly integrate with the existing mechanics. The Bluetooth module approach, with an integrated antenna, required replacement with a discrete chipset design and a new Bluetooth-circuit antenna. The antenna design had to prioritize compactness while addressing potential issues with chrome-plated zinc ring mechanics. 

Additionally, a new Bluetooth wireless processor and flash memory were to be incorporated. Changes were necessary for the buzzer and the addition of a new audio amplifier. The testing and software upgrade interface needed to transition to JTAG for enhanced functionality. 

Sasken altered the components and redesigned the layout, introducing complexities in the design process. Factors such as adjusting the size and shape of the Bluetooth-circuit antenna, as well as accommodating the buzzer size and mounting hole, contributed to the added intricacies in the layout design. We also furnished the software aspect, employing Embedded C on ARM microcontrollers with a Real-Time Operating System (RTOS), and implemented a proprietary protocol facilitating communication between the device and mobile clients via Bluetooth Low Energy (LE). 

Sasken introduced a new iteration of the Bluetooth Smart Tag product for the customer. The product featured enhanced functionalities while retaining existing mechanics. Despite facing complexities in layout design due to limited space, the challenge was addressed with a cost-effective approach utilizing a 2-layer board.