Testing a WeSU in everyday life

1 Introduction

In this article, we will use a WeSU in some daily common scenarios. In this way, we will propose some case of use of wearable device, testing also its mechanical robustness and its sensitivity.

For our tests we will use the remote data capture feature provided by the smartphone app: this is very useful because it allows to save data and send them to an email address allowing offline post processing. Before starting each test, we need to pair WeSU and our smartphone using bluetooth: launch the application (ST WeSU) then click on START SCANNING (see Fig. 1).

If the procedure will be successful the WeSU will appears in the list of detected Bluetooth nodes near a black double check mark. To start recording data, we have to click on START LOGGING. continue reading…

SEGGER J-Link Pro: an exhaustive review

SEGGER J-Link PRO an exhaustive review

1 Meeting J-Link

In our minds, we have always seen SEGGER debugging solutions like a professional but costly tools: a debugger to perform advanced operations but definitely too much for a student. Some time ago we heard about a new version of SEGGER, the J-Link EDU, which is cheaper and addressed virtually to us. It started to take shape the idea of using it as external debugger for these ARM evaluation kit which comes without a debugger.

Some month ago SEGGER proposed a firmware suitable for STM32 Nucleo on-chip debugger which makes J-Link available also for the STM32 ecosystem and they notified us this solution commenting our STM32 Nucleo-144 review. After an exchange of reciprocal opinion they have definitely caught our attention and we have decided to ask them for a J-Link PRO in order to test it. continue reading…

Review of WeSU: a development board for wearable applications.

Wesu Review

1 Introduction

At the recent event “ST = Life Augmented”, held in Milan during the Class Digital Experience Week, STMicroelectronics has raffled various development kits, for attendees who enrolled to the event through the Pepite blog. Apart to the famous STM32 Nucleo-64 board and some of its Expansion Board (the STM32 x-Nucleo), the most interesting thing was the development kit for wearable applications, the STEVAL-WESU 1, valued at approximately 50€ and we were lucky to get one for free.

STEVAL-WESU1 stand for ST EVALution WErable Sensor Unit, and is an evaluation kit to test various sensors brought by ST for a large number of products such as mobile, tablet and now proposes they to build personal wearable devices. On top of the box there is little information about its contents, as to hide the little treasure that encompasses inside, as you can see in Fig.1. We read that the device is compact, which has a dedicated firmware for wearable devices and an APP available for both Android and iOS, but no mention about the hardware components. continue reading…