What is the expansion board DEVPACK-WATCH for SensorTag?

Narrow down by specifying conditions

現在1888件がヒットしています。check

Design Sensor Wireless Texas Instruments

Previously, easy implementation of LED! Extension board for SensorTag DEVPACK-LED-AUDIO introduced the SensorTag extension board "DEVPACK-LED-AUDIO", but there is also an extension board called "DEVPACK-WATCH" that can display clocks and characters This time, we will introduce the features and how to use this product.

What you can do with the expansion board DEVPACK-WATCH for SensorTag

Display clock and text on LCD panel

DEVPACK-WATCH is an expansion board provided for SensorTag made by Texas Instruments (TI).

A 96x96 dot LCD panel is connected through the Sensor Tag's DevPack connector to display clocks and characters.

Please refer to this article for SensorTag.
Three features of SensorTag (CC2650STK)

feature

Evaluation kit that can be attached to the SensorTag (see diagram below)
Character data can be displayed on a 96x96 dot LCD panel (LS013B4DN04 manufactured by Sharp)

See below for how to connect.

How to connect with SensorTag

Simply connect the DEVPACK-WATCH (back side) and the SensorTag (back side) and you're done.

Article header library 124701 pic02 1 — Connect DEVPACK-WATCH and SensorTag

If you want to keep the DEVPACK-WATCH and SensorTag connected and still use the red SensorTag cover, cut the cover to fit your display.

Article header library 124701 pic03 1 — Left: Two boards connected / Right: Cover cut off

How DEVPACK-WATCH works

Things to prepare

Sensor Tag (CC2650STK)
DEVPACK-WATCH
Smartphone (I use iPhone this time)
SensorTag app (This time we will use an iOS app as an example)

1. Firmware update

First, update the SensorTag's firmware.
In order to update the firmware with OAD this time, launch the SensorTag app, confirm that the SensorTag to be updated is displayed, and select Sensor View.

Please refer to the following page for firmware update.
Let's update SensorTag to the latest F/W -OAD edition-

Article header library 124701 pic04 1 — Firmware update

2. Transition to update screen

Select Upgrade for the display on the left, and select FW Download if the display does not appear.

Article header library 124701 pic05 1 — Select Upgrade or FW Download

3. FW selection

Select the FW to update from Select FW File.
This time, we will update to v1.30 LED Devpack FW, so select the following.

Article header library 124701 pic06 1 — Select FW

4. Run FW update

If FW upgrade successful is displayed, it is successful.

Article header library 124701 pic07 4 — Run FW update

You can check the written FW from "Device Information" in the SensorTag app.

Article header library 124701 pic08 2 — Check FW after update

5. Access SensorTags

Once the FW is updated, access SensorTag from your smartphone. Similarly, confirm that the target SensorTag is displayed and select Sensor View.

In addition, since the information of the previous FW may remain in the smartphone app, it is recommended to completely quit the app and then start the app again. Also, update your smartphone app to the latest version.

Article header library 124701 pic04 2 — Visit SensorTags

6. Check display with DEVPACK-WATCH

Before connection, the LCD on the Sensor Tag side displays Advertising at the bottom, and Connected when connected.

Article header library 124701 pic09 1 — Character string output to the display screen

7. Display characters

The updated FW adds a Display Service item.

If you enter a character in the text in this and select Write to LCD, the character will be displayed on the LCD of the Sensor Tag. Enter CC2650 as an example.

Article header library 124701 pic10 1 — Procedure for displaying "CC2650"

8. Display the clock

Next, let's select Enable Clock. As you can see in the picture, the clock is now displayed.

Article header library 124701 pic11 2 — show the clock

9. Invert LCD display

Finally, select Invert Display. Then, the white and black of the LCD display are reversed.

Article header library 124701 pic12 1 — inverted state

At the end

This concludes the explanation of DEVPACK WATCH.

By using DEVPACK WATCH in this way, it is possible to send the character string specified on the smartphone side to the Sensor Tag side using BLE and display the characters on the LCD connected to the Sensor Tag. Please refer to it.