Teasi Core User Manual

Powered by

This manual covers all the details and explanations of the TEASI CORE.

VERSION 13-20-04-2017_F01

User Manual

English

1

Table of Contents

The use and operation of navigation systems .................................................................................. 3

Teasi Core ......................................................................................................................................... 3

1. Getting to know your Core ....................................................................................................... 4

2. Charging the Teasi Core ............................................................................................................ 5

3. Speed/Cadence Sensor ............................................................................................................. 5

4. Using Bluetooth Sensors ........................................................................................................... 5

4.1 Speed/Cadence Sensor ........................................................................................................ 5

5. Installation of Teasi Core on your bicycle ................................................................................. 6

6. Installation of speed/cadence sensor ....................................................................................... 6

7. Teasi Core has 2 working modes .............................................................................................. 8

7.1 App working mode .............................................................................................................. 8

7.1.1 Connect to Tahuna .......................................................................................................... 8

7.1.2 Speedometer Display of Teasi Core .............................................................................. 10

7.1.3 Page Display of Teasi Core ............................................................................................ 11

7.2 Bike Computer Mode ........................................................................................................ 12

7.2.1 Manual pairing method for sensors and Teasi Core ..................................................... 13

7.2.2 Start and stop of riding ................................................................................................. 14

7.3 Settings menu .................................................................................................................... 14

7.3.1 Basic settings ................................................................................................................. 14

7.3.2 Wheel size setting ......................................................................................................... 15

8. Connect the Teasi Core to the Tahuna App ............................................................................ 16

9. Connection .............................................................................................................................. 20

10. Computer layout and selection change .................................................................................. 23

11. Navigation (turn instructions to Teasi Core) ........................................................................... 24

12. Troubleshooting ...................................................................................................................... 25

13. Specifications .......................................................................................................................... 25

14. Appendix ................................................................................................................................. 26

14.1 Data Fields ..................................................................................................................... 26

User information/Contact .............................................................................................................. 27

Declaration of Conformity .............................................................................................................. 27

Guarantee ....................................................................................................................................... 27

2

The use and operation of navigation systems

Attention! Don’t operate with the device while driving. Even the smallest and shortest distractions
from road or traffic for you and other road users - even at slow speeds – may have devastating
consequences.
Type in the destination before starting your journey and start the navigation system before you
start driving.
If you have to change the route or the settings while driving, you should better stop for it.

Teasi Core

Teasi Core is an intelligent bike computer which can be connected via Bluetooth® with your
smartphone (free TAHUNA App for Android and iOS) or external fitness sensors and displays basic
values as well as navigation instructions, training data and incoming calls.

This product is provided with a built-in battery that can be charged with a charger above DC 5V, 500
mA or PC USB interface when the battery is too low to supply power to Teasi Core.

This product is provided with a monochrome display screen, its backlight can be turned on
manually at night for better vision, and turned off at day to save power. You can also set backlight
into auto on/off mode in the settings menu.

Delivery contents:

- Device Teasi Core

- Speed- & cadence sensor

- 4 nylon straps and 1 rubber band for the sensor

- Wheel and pedal magnet

- HR mounting bracket with 2 cable ties and adhesive label

- USB cable

- Quick Start Guide

- Note for connecting Teasi Core to Tahuna app

3

1. Getting to know your Core

1. USB charging interface/USB rubber
stopper

2. Long press: power on/off

short press: backlight on/off

3. Reset

4. Buzzer

5. Auto backlight on/off induction window

6. Mounting for HR bracket

Buttons

Normal mode

Setting mode

Short press: change display mode
Long press 1 sec: go into settings

picture

Short press: change option,

backward/left direction

Long press 1 sec: exit the settings picture

Long press 1 sec: change to App

working mode

Long press 2 sec: go into pair

sensor mode

Short press: Change digit/confirm

(Yes/No)

Short press: start/pause recording
Long press: stop recording

Short press: select next digit or

option/right direction

Buttons

Pairing sensors mode

Connect with APP mode

Long press 1 sec: exit pair sensor

picture

Short press: exit smartphone search

Short press: start search

sensors/search next
sensor/exit if both
sensors are connected

Short press: start/pause recording
Long press 1 sec: stop recording

A B C 1 3

5 4 2
6

A/B/C shown in the figure above are only the functional buttons of this product, please see
the table below for their specific functions:

4

2. Charging the Teasi Core

1. Pull up the USB rubber stopper from the USB charging interface (1).

2. Plug the small end of the USB cable in the USB charging interface.

3. Connect the large end of the USB cable to a 5V AC adaptor or a USB port on a computer.

4. Charge the Teasi Core for the first time completely, around 4 hours. The average charging

time is 1.5 hours. When the battery is completely discharged, the device may only turn on
after the battery has been charged for some time. When the device is turned off, a progress
bar on the display indicates the charging progress during charging.

3. Speed/Cadence Sensor

Wireless speed/cadence sensor Wheel magnet Pedal magnet

Bluetooth name: Teasi SPC

4. Using Bluetooth Sensors

4.1 Speed/Cadence Sensor

a) There is a CR2032 button cell inside the product to provide power and its service life is 4

months in general. Teasi Core or Tahuna will fail to detect sensors when sensor cell is
dead or sensor is damaged. Sensor cell can be replaced according to the figure below.

Please note: when you use this product for the first time, please remove the battery
hatch to remove the insulation film.

b) This product can be connected to any equipment conforming to BLE 4.0 standard protocol

and transmit data to it.

c) This product will get into sleep mode after wheels stop spinning for 5 min in order to save

power; it will also get into sleep mode when Tahuna or Teasi Core disconnects from
sensor. When it is used again, bike wheels shall be made spun to activate sensor, so that
the product can be searched by Tahuna or Teasi Core.

5

5. Installation of Teasi Core on your bicycle

Fix the Teasi Core on the bracket as shown in the figure below.

6. Installation of speed/cadence sensor

Install pedals magnet (RPM) and wheel magnet (speed) in corresponding positions as shown in
the figure below:

Tear the 3M adhesive on the back of pedal magnet off and stick pedals magnet inside the
pedal connecting arm, and then tie up the 2 nylon straps to fix it, and cut unnecessary part
down.

Install the wheel magnet on wheel spoke and tighten it, so as to ensure that it will not slide
when the wheel is spinning at a high speed.

6

Fix speed/cadence sensor on corresponding position of bike as shown in the figure, and then
tighten it with 2 nylon straps.

Then, fix it again with a rubber band.

Please note: the centers of pedal magnet and wheel magnet shall be aligned with corresponding
induction part of sensor and shall not be deviated from it too far; the magnets shall not be more
than 2 cm from the induction part, since distance larger than 2 cm will make it fail to receive the
wheel spinning signal. Screws can be loosened with screwdriver to adjust the distance between the
extendible arm of inductor and spoke magnet.

7

7. Teasi Core has 2 working modes

a) App working mode:

Teasi Core is only a display equipment that needs to pair and connect to app, and all its
data is from app push; in this mode, speed/cadence sensor and heart rate monitor shall
pair with Teasi Core and connect to it.

b) Bike computer working mode:

Teasi Core is only a bike computer that is not connected to app; in this mode, speed/
cadence sensor and heart rate monitor shall pair with Teasi Core and connect to it.

7.1 App working mode

7.1.1 Connect to Tahuna

You can scan the QR code displayed on this equipment when it is started first time or the QR
code printed on the package to enter the website, and download and install the Tahuna app.

This product will search to connect with Tahuna automatically after it is started, as shown in
the left of the following figure. If you do not need to connect to Tahuna or Tahuna has
stopped working, you can press the far left button to EXIT:

Teasi Core starts to connect to Tahuna

When the app detects a new version of Teasi Core to update to, there will be a dialogue box
of update prompt given on the app. You can click the update button on the app to make
Teasi Core update automatically. The following update progress bar will be shown.

8

Notice:
Please make sure your phone and Teasi Core have enough power before updating, keep
Bluetooth connection smooth in updating process, and do not take your phone away from
Teasi Core. If update does not progress for a long time or power fails, or Bluetooth signal is
lost in updating process, Teasi Core will return to its old version and will update again when it
is connected to the app next time.

You need to turn the Bluetooth of your smartphone and the connect switch of Tahuna on, so
that Tahuna can seek to connect with Teasi Core. The main interface will be entered after the
successful connection and the successful connection symbol as shown in the figure below will
be shown; at the same time, you need to connect Tahuna with speed/cadence sensor and
heart rate sensor.

When all connections are finished, Teasi Core can start to work.

Successful connection of Teasi Core and Tahuna

Please note: You need to make sure that Teasi Core or sensors are not connected to other
Bluetooth equipment and can be effectively connected to Tahuna.

9

7.1.2 Speedometer Display of Teasi Core

Successful connection to Tahuna
Smartphone battery

Smartphone GPS on

Current time

Equipment battery

Maximum speed

Current speed

Accumulative mileage

After the equipment is connected to Tahuna, the 2
data types can be changed on the app in the
speedometer view.

Speedometer

10

7.1.3 Page Display of Teasi Core

Display page of Teasi Core is divided into: Speedometer, 2-4-6 segment display interface,
navigation display interface.
Users can change the data type they want to display on the corresponding page of the app for
the two data fields below (speedometer and navigation picture), and the data on 2-4-6
interface. Data fields with red dots in this document can be changed.
Users can select corresponding 2-4-6 segment display mode on app computer page according
to their habits.
Navigation page will only be displayed after users set their destination on the app and enable
navigation feature.

2-segment Display Page 4-segment Display Page

6-segment Display Page Navigation Display Page

This product also has notification feature, for example, phone and SMS notifications which
you can set on the app. However, this feature can only be used when Teasi Core is used
together with app. Examples are shown below:

Phone SMS

11

This product will enter standby mode automatically after riding is stopped for 3 min, as shown

S

Speed/cadence sensor is connected

H

Heart rate sensor is connected

in the figure below. It will return to the previous interface automatically after riding starts
again.

Standby Mode

7.2 Bike Computer Mode

This product will seek to connect with Tahuna after it is started, as shown in the figure below;
if you do not want to connect with Tahuna or Tahuna has stopped working, you can press the
far left button to EXIT and enter bike computer mode.
If Teasi Core has connected to Tahuna successfully and is in app working mode currently, users

can disconnect the sensors in the sensors page of Tahuna to return to the searching mode;
then select EXIT to exit and enter the independent working mode of the bike computer.

At this moment, it is needed to pair speed/cadence sensors and heart rate monitor and
connect them. The sensors connect automatically when they are activated and found. The
sensors connect automatically when they are ready for operation and active.

Speed & Cadence Sensor: The magnets must pass the sensor surfaces to activate the sensor.
Heart rate sensor: Must have secure skin contact with lightly moistened contact surfaces.

Connection for speed/cadence sensors or heart rate will be shown on the upper right symbol
on the display:

12

7.2.1 Manual pairing method for sensors and Teasi Core

If sensors won’t connect automatically, you can connect them manually.
Make sure that the sensors have been activated for operation.
Speed & Cadence Sensor: The magnets must pass the sensor surfaces to activate the
sensor.
Heart rate sensor: Must have secure skin contact with lightly moistened contact surfaces.

Long press for 2 sec and then release it after hearing the buzzer sounds twice, then the
Teasi Core will enter the mode to pair and connect with sensor; after the following

interface is shown, short press to search sensor; when one sensor is searched, its name

will be displayed and the equipment will connect to it automatically. Short press at this

time to start searching the next sensor. After the 2 sensors are searched, short press to

exit sensor searching mode; if it only needs to connect to one sensor, long press for 1
sec after searching, and then exit sensor pairing interface after hearing the buzzer sounds
once. Then, this following connection status symbol will be shown on the screen, showing
that Teasi Core has been successfully connected to sensors, and the bike computer can
start to work independently. However, the wheel size shall be set. See settings for wheel
size setup.

Teasi Core and sensors pairing interface Working interface entered after pairing is completed

In bike computer working mode, some data may not be displayed, for example, data is
displayed ——, the reason is that:

1. These data are all from the app, and the app is not connected when Teasi Core is working
independently, so there is no data source.

2. Speed/cadence sensor and heart rate monitor are not paired and connected to each
other, so there is no data source.

13

When bike computer is working, users can record and store sports data selectively. Short press

to start record and short press again to suspend recording; long press for 1 sec,
and then release it after hearing the buzzer sounds once to stop recording; a new entry of
record is generated. When the equipment is connected to Tahuna again, Tahuna will acquire
this data and calculate it.

7.2.2 Start and stop of riding

When Teasi Core is prepared for work, the prompt box as shown in the left figure will be
displayed on the screen; when riding is suspended, the prompt box as shown in the right figure
will be displayed on the screen.

7.3 Settings menu

In normal working state, long press for 1 sec (release the button after hearing Buzzer
sounds once) to enter settings menu where corresponding parameters can be set; refer to
button function list for button operation mode and function list. Exit settings menu: long press

for 1 sec (release the button after hearing buzzer sounds once) to exit settings menu.

7.3.1 Basic settings

24-Hours time: 24-hour time notation (ON) or 12-hour time notation (OFF).
Clock: Current time can be changed in bike computer mode.
Date: Current date can be changed in bike computer mode.
Language: Teasi Core supports 5 languages: English, German, French, Dutch and Czech.
Sound: Steering notification tone and warning tone can be turned off.
Auto backlight: Auto backlight control can be selected in settings menu. When auto backlight

is selected, the backlight will be turned off automatically at day and be turned on at night.
Units: Choose between metric and imperial system in bike computer mode.

14

Perimeter: Wheel perimeter, see table in 7.3.2 Wheel size setting.
Clear pair info: Eliminate Bluetooth pairing information.
Clear sport data: Eliminate all sports data except for ODO data.
Reset to default: Reset to factory defaults, settings data will be cleared after resetting to

default.

7.3.2 Wheel size setting

In the table below, you can find the wheel size (L) of your tire, or the actually measured wheel
size (L) of your bike.
How to measure wheel size (L): in order to obtain accurate measurement, you can make a tire
roller. Place the valve stem of the tire in normal pressure down, and mark on the ground. With
the pedaling load of rider applied, make the tire roll one circle (until the valve steam returns
down on the ground) in a straight line. Then mark the position of valve stem and measure the
distance in millimeter dimension.

* The following table is for your reference.

Please note: No matter which working mode is in, bike computer or app mode, it is needed to set

wheel size on bike computer or app; otherwise, the data will not be accurate.

15

8. Connect the Teasi Core to the Tahuna App

Open the Tahuna application.
Please make sure first that you have logged in and you have a stable internet connection.

Enter into the Shop menu by tapping on the plus sign button ( ) at the bottom right side of
the screen. Always follow the plus sign in the next steps.

In the Shop menu, tap on the plus sign, next to Hardware Packages to see what kind of extra
hardware options are there.

16

In Hardware Packages, you can choose Bike Computer Package by tapping on the plus sign
next to them. In this case, choose Bike Computer.

At the next screen, details about the product are shown. Tap on the plus sign to install Bike
Computer Package.

17

In order to connect Bike Computer with the Tahuna Application, Bluetooth must be turned on
on your phone. Tap on ‘Next’ when Bluetooth is ready.

The App will search for devices.

The App will search for devices.

18

Two outcomes are possible:

Bluetooth connection failed. In this case, you should check, if Bluetooth connection is really
turned on or not.

Connecting devices have been successful.

New features have been unlocked with this step:

- Navigation package,

- Fitness/Sensor package,

- Gadget package.

19

9. Connection

The starting screen of the application is a map. If you would like to get to the main menu, tap
the button with 3 lines at the top left side of the screen.

The application’s Main menu will appear. Tap on the gear wheel at the bottom left side of the
screen to open the Settings menu.

20

The content of Settings menu appears. It has a submenu panel. Choose Sensors by sliding the

submenu panel.

Please make sure Teasi Core is switched on and searching for smart phones. The app will do a
scanning whether there is any BLE device nearby.

21

After the scans, it will show what it has found. Search for the sign ‘TEASI CORE’ with a green
icon. It is disconnected on default. Tap on it, so it can start connecting.

If your Teasi Core cannot be found, use the Reset arrow to update the status of the search.

Sensors connect automatically to the app when they are ready for operation and active.

Speed & Cadence Sensor: The magnets must pass the sensor surfaces to activate the sensor.
Heart rate sensor: Must have secure skin contact with lightly moistened contact surfaces.

The Teasi Core hands over the sensors to the app as soon as the Teasi Core is connected to the
app. When the app is disconnected, the Teasi Core connects again directly to the sensors.
The sensors can also be used with the app without Teasi Core.

22

10. Computer layout and selection change

Tap Computer in the main menu.

Computer menu appears. It has a submenu panel, Tap Computers menu point.

There is a button next to the reset arrow called the Layout button. It can split up the show of
the data into groups of 2, 4 or 6 parts. The button always shows the next layout type.

You can change the computer type by long pressing on the box you want to modify and
selecting from the list. Every information is then synchronized with Teasi Core.

23

11. Navigation (turn instructions to Teasi Core)

During the navigation in the Tahuna App, the next turning instruction will be shown. When
connection has been established, the arrows will appear also on the screen of the Teasi Core.

Furthermore, other related data in the Computer section will appear also on Teasi Core, too.

24

12. Troubleshooting

Problem

Solution

Device stops responding

Press reset button on the rear side. This does not erase
your data or settings.

Device does not reconnect to app

Turn device off and on again, go to the settings in the
app and press on the Sensors tab. Make sure, that
Bluetooth is enabled in your telephone.

Speed/cadence sensors are not
found in bike computer mode

Make sure, that sensors are connected properly.
Magnets must be near enough the sensors. Turn the
wheels to wake the sensors up. Pair the sensors as
explained in 7.2.1.

Speed/cadence sensors are not
found in app mode

Make sure, that Bluetooth is enabled in your phone and
you have activated the Bike Computer package as
explained in 8. Go to the settings and Sensors, turn the
device off and on and wait until the device is found.

Firmware update gets stuck

Close the app and wait until the update window on the
Core disappears. Reset the device, if the update window
won’t disappear. Check the WiFi connection on your
phone, then start the app again and repeat the update
process.

Clearing user data/Restore
factory settings

Hold button A to open the settings screen. Tap button C

and choose “Reset to default”, press button B to

confirm.

Device does not power on

Charge the battery completely. If the battery is empty,
the device may only turn on after some hours of
charging.

Display

Approx. 5.08 cm / 1.87" FSTN; resolution: 128 x 60 pixels

Battery life

Max. 85 hours; using with continuous background
illumination: approx. 35 hours

Battery type

Li-Poly with 680 mAh

Charging time

1.5 hours

Dimensions / Weight

81 x 46 x 12 mm / 50g

Input & Output

4 buttons + 1 reset button; Bluetooth 4.0 SMART;
buzzer; light sensor; background light

Memory

MCU 512k flash and external flash 2MB

Sensors

Speed/cadence, heart rate (not included)

Water rating

IPX5

Working temperature

-10° C to 60° C

13. Specifications

25

14. Appendix

AC TIME

Active Time

ALT

Altitude

AVL TM

Arrival Time

BAT DES

Remaining Battery at Destination

BATT

Device Battery

CAD

Cadence

CAL

Calories

CL LEFT

Climb Left

DAY LNG

Daily Length

DST DES

Distance to Destination

DST DIF

Distance difference

DST NXT

Distance to Next Turn

DST TOU

Distance to Tour

E ASS LVL

Assist Level

E BATT

E-bike Battery

E CURR

Current

E ODO

E-bike Odometer

GEAR

Gear

GRADE

Grade

HEAD

Heading

HMN PWR

Human Power

HR

Heart Rate

LAT

Latitude

LENGTH

Length

LONG

Longitude

MAX ALT

Max. Altitude

MAX CAD

Max. Cadence

MAX CAP

Max. Capacity

MAX HR

Max. Heart Rate

MAX PAC

Max. Pace

MAX SPD

Max. Speed

MTR PWR

Motor Power

ØAC SPD

Avg. Active Speed

ØCAD

Avg. Cadence

ØHR

Avg. Heart Rate

ØPACE

Avg. Pace

ØSPEED

Avg. Speed

PACE

Pace

PRESS

Pressure

RANGE

Range

RNG DES

Remaining Range at Destination

14.1 Data Fields

26

User information/Contact

If your device has a defect or you have problems with it, please contact our Service & Support
Centre.

If you need to send your device to us, please attend to the following points:

1. Whenever possible, use the original packaging.

2. Add a detailed error description

3. Add your full name and address and a copy of your purchase receipt.

4. Stamp and send the package to us (sufficient postage).

Address of our Service Center:
First Service Center, Kleine Düwelstr. 21, DE-30171 Hannover

You can get help at: http://support.teasi.de

Declaration of Conformity

Hereby Baros GmbH, declares, that the device TEASI Core / NAV-BIKTC / NAV-BIKTS, is in
compliance with the essential requirements and other relevant regulations of Directive
2014/53/EU.

The Declaration of Conformity can be found at: www.a-rival.de

Guarantee

Please keep the proof of purchase for this device for the entire duration of the guarantee period, as
it must be produced in the event of any claim.

You (as the end user) receive a 36 months guarantee from the date of sale. The article has been
manufactured using the most modern production methods and subjected to strict quality controls.

Please contact only the manufacturer (not the dealer where you purchased it) in the event of any
defects during the guarantee period.

http://support.teasi.de

The guarantee does not cover damage caused by improper use or external influence (water, falling,
sunlight, breakage or impact).

27