Switch Science


Switch Science is one of the open source hardware retailers in Japan. We are manufacturing our own products.

Getting started with ssci mbed TY51822r3

Overview

Pinout:
/media/uploads/asagin/ssci_mbedty51822r3_pinout_0105.png

The tact switch on the board will be a reset switch. Currently, this is not working. We are working on this issue, and it will be solved by future release.

Solder jumpers on top of the board is connecting UART RX and TX between mbed interface and BLE module. When you want to connect UART signal out of the board, please remove the solder. We are using lead free solder.

A solder jumper bottom of the board is connecting 3V3 of BLE module - pin header and regulator - mbed interface. When you want to use exterior power source such as coin-cell buttery, please remove the solder.

Schematic(PDF)

Warning

When you want to drive LED and other energy eaters, please connect through FETs.
The maximum output current of nRF51822's ports is only 0.5mA!

Note

On Microsoft Windows, you need to install driver to use COM port. You can download the driver software from Windows serial configuration.

Distributors

- Switch Science

First touch

Please add Switch Science mbed TY51822r3 to your online compiler and import this project.

Import programBLE_HTM_TY51822R3

Health Thermometer example for Switch Science mbed TY51822r3


By pressing compile button, you can download hex file.
nRF51822 is having SoftDevice technology, that allows change BLE stack. This hex file contains your program and this SoftDevice.

When you connect Switch Science mbed TY51822r3 to your PC via USB cable, "MBED" drive will be mounted. By Drag&Drop the hex file, you can flash. After flashing, "MBED" drive will be unmounted automatically, and will be mounted again. nRF51822 will be reset and your program run.
Note: You will not be able to find your hex file in the "MBED" drive, after unmounted/mounted.

Please install "nRF Toolbox" by Nordic to your smart phone. You can find your Switch Science mbed TY51822r3, by tapping "CONNECT" button of "HTM". Do you want to see the temperature? Please connect TMP102 I2C sensor like this.


FAQ

My program is not ran by writing HEX file!

By downloading hex file directly to "MBED" drive with Internet Explorer, this matter happen. Please do not save directly with Internet Explorer. You can resolve this issue by downloading to other place and drag-n-drop the file into MBED drive.

The LED on the board is an access lamp of mbed interface.
Please connect your LED and current-limiting resistor through FET.

Warning

When you want to drive LED and other energy eaters, please connect through FETs.
The maximum output current of nRF51822's ports is only 0.5mA!

I can not reset by pressing tactile switch!

Sorry, we are working on solving this issue.

Examples

Import programmbed_EddystoneURL_Beacon_ssci

Sample program

1. Compile the code, transfer the hex file to mbed.
2. Install "Physical web" to your smart phone and run the app.
3. You will see "TOP - SWITCH-SCIENCE" on the App.