Walnutt SPECTRA Silver User manual

Contents
Using this Manual
Legends 01
Read Before the First Ride 01
Video Tutorials 01
Download the eBoard Go App 01
6-Step Quick Start 02
Product Profile
Introduction 05
Feature Highlight 05
Product Features
SenDeck 08
Start Mode 09
Motion Control 10
Cruise Function 11
4WD Brake 11
Speed Mode 12
Ramp Assist 12
Riding Status Indicator 13
Magnetic Charge 14
eBoard Go app
Device 17
Home 18
Discover 18
Inbox 18
Me 18
Ride and Safety
Ride Environment Requirements 20
Ride Limits 20
Pre-ride Checklist 20
Warnings 21

Contents
Storage and Transportation 21
Travel Notice 22
Maintenance and Upkeep 22
Disposal 23
FAQ
24
Appendix
Specifications 27
Charger 27
After-Sales Information 28
Safety Certificates 28

©2018 WALNUTT. All Rights Reserved. 1
Using this Manual
Legends
Warning
Important
Hints and Tips
Reference
Read Before the First Ride
Read the following documents before using the SPECTRATM Silver:
1. User Manual
2. Quick Start Guide
3. Disclaimer and Safety Guidelines
Check all of the included parts listed in the In the Box page of Quick Start Guide and read the
Disclaimer and Safety Guidelines before ride. Then prepare for your first ride by using the Quick
Start Guide and watch all of the tutorial videos on WALNUTT's official website (www.walnutt.com). If
you have questions, refer to the User Manual in the App or on WALNUTT's official website for more
comprehensive information. Make sure you fully understand the functionality of the SPECTRA Silver,
the ride condition requirements, the key contingency warning functions/systems, and all
government regulations before each ride. If you have any questions or problems during the use or
maintenance of this product, please contact WALNUTT or a WALNUTT authorized dealer or
designated service provider.
Video Tutorials
Please watch the tutorials videos at the link below, which demonstrate how to use SPECTRA Silver
safely. www.walnutt.com
Download the eBoard Go App
Download and install the eBoard Go App before using the SPECTRA Silver. Visit the WALNUTT
official website to download the latest version, or search for it in iOS App store or Google Play.
The Android version of the eBoard Go App is compatible with Android 4.1.2 or later.
The iOS version of the eBoard Go App is compatible with iOS 8.0 or later.

2 ©2018 WALNUTT. All Rights Reserved.
6-Step Quick Start
Standing Postures
There are five sensing areas on
SenDeck of SPECTRA Silver,
marked by arrows.
Refer to the two postures on the
left. Press your feet on four of
those arrows to ensure the
SenDeck could detect your
pressures.
1. Step Up
Choose one posture from above, and step your front foot on
the SenDeck. Then step on your rear foot.
Remember to stand on four of those arrows.
Alarm: D-
2. Stand Stably
Straighten your body, try to maintain balance and keep the
deck level.
Alarm: D-D-
3. Move Forward
Lean slightly forward. The SPECTRA Silver will gradually speed
up.
Shift your weight backward to gently slow down until stop.

©2018 WALNUTT. All Rights Reserved. 3
4. Make Turns
To turn left, lean your body to the left and press your rear foot
on the left sensor module.
Tilt the deck to steer more easily.
You can turn right in the similar way.
5. Decelerate & Brake
Shift your weight backward. The SPECTRA will gradually slow
down and stop eventually, unless you lean forward again.
Alarm: D-D-D-…… Headlight: Red Taillight: Red
6. Instant Stop
Jump off to the side of SPECTRA Silver to stop it immediately.
The SPECTRA brakes with all wheels until stop.
Do not jump off SPECTRA at high speed. Confirm the
landing environment before jumping.
Alarm: D—Headlight: Red Taillight: Red

4 ©2018 WALNUTT. All Rights Reserved.
Product Profile
This section introduces the SPECTRA
Silver and lists its components.

©2018 WALNUTT. All Rights Reserved. 5
Introduction
The SPECTRA Silver is an extremely portable mobility device. With SPECTRA Silver, you are able to
travel around, brake and even climb ramps without any additional controller. By connecting the
eBoard Go app, you can also interact, share and lock with your SPECTRA Silver.
Feature Highlight
SenDeck and 4WD are two innovative components in the SPECTRA Silver. By simply adjusting body
posture, you can reach your destination smoothly, and brake to stop timely and safely during your
journey.
Headlight
Indicating battery level or device status.
Hub Motor Wheel
Customized hub motors and the advanced Field
Oriented Control output powerful propulsions in
amazingly small size with nearly no noise or
resistance.
SenDeck
Detecting pressure changes on different sections
and analyzing your posture for motion control in
real-time.
Taillight
Indicating braking or charging.

6 ©2018 WALNUTT. All Rights Reserved.
Truck
Assisting steering by rotating the axles.
Magnalium Unibody
An integrated waterproof body without any holes or
slits but only the perfect Magnalium surface with
strong corrosion resistance and physical strength.
Magnetic Charge
Magnetically attaching to the charger.
Power Button
Press to switch on or off the SPECTRA Silver.
Built-in Battery
Our battery module features high-capacity battery cells and an advanced power management
system, satisfying various stringent safety standards.
Ramp Assist
The 6-axis attitude sensors and the control module can intelligently accelerate in uphill or brake in
downhill.
4WD
4 Hub Motor Wheel provides strong power, stable rides and countable deboost.
Walnut Technology Limited reserves the right to update this user manual.
Please visit www.walnutt.com and check your email periodically for the latest version.
This user manual is made in various language versions; in the event of divergence among different
versions, the English version shall prevail.

©2018 WALNUTT. All Rights Reserved. 7
Product Features
This section introduces the features of
the SPECTRA Silver.

8 ©2018 WALNUTT. All Rights Reserved.
SenDeck
The SPECTRA Silver's SenDeck integrates 5 sensing areas to detect pressure changes on different
sections.
Perceive Your Posture
Pressures at your feet change along with your body posture.
With the unique perceiving system, SPECTRA Silver is able to
real-time analyze your body posture based on these pressure
signals.
Other valuable information, such as whether you are standing
stably or lifting your toes or heel, could also be recognized.
How to Stand
Refer to the standing postures
on the left. Separate your feet
into front and rear.
Whether you prefer your left or
right foot ahead, SPECTRA Silver
is fully compatible with these
two postures.
-You are supposed to check the sensor modules before using the SPECTRA Silver. Refer
to the "Device" on Page 17 for more information.
-The arrows on the surface mark the positions of sensor modules. Putting your toes or
heels on the arrows will help to perceive your body postures.

©2018 WALNUTT. All Rights Reserved. 9
Start Mode
To start the SPECTRA Silver, you can either stand still on it or slide with it. The details of each start
mode are found below.
Mode Name
User
SPECTRA
Alarm
Stand
Mode
1. Step on your front foot.
Brakes all wheels.
None
2. Step on your rear foot.
Brakes all wheels.
D-
3. Straighten your body, maintain
balance and keep the deck level.
Releases brake and
gets ready to go.
D-D-
Slide
Mode
1. Slide with your front foot.
Releases brake.
D-
2. Put on your rear foot.
Gets ready to go.
D-D-
Stand to go
OR
Slide to go
-The operation conditions of SPECTRA Silver are limited within -10 ~ 35℃and
under 85 kg. Long-time operation under high temperature and large load may
cause sensor module failure therefore should be avoided.
-You MUST wear helmet and other safety equipment while riding the SPECTRA
Silver.
-Use the eBoard Go app to change the start mode of the SPECTRA Silver. Refer to the
"Device" on Page 17 for more information.
-If you are just starting out using the SPECTRA Silver, you are suggested to choose the
Stand Mode. Refer to the "Device" on Page 17 for more information.

10 ©2018 WALNUTT. All Rights Reserved.
Motion Control
The SPECTRA Silver moves along with your posture thanks to the well-designed and intuition-
motivated motion controller. Simply by tilting your body, you can freely move forward and make turns.
Move Forward
Lean slightly forward. The SPECTRA Silver will gradually speed
up.
Shift your weight backward to gently slow down until stop.
Make Turns
To turn left, lean your body to the left and press your rear foot
on the left sensor module.
Tilt the deck to steer more easily.
You can turn right in the similar way.
Use the Truck
SPECTRA Silver adopts the truck , a classic mechanism on every
common skateboard.
When you are leaning, try to tilt the deck. The tucks will rotate
the front and rear axles in opposite directions, which can help
turning greatly.
The truck and the differential speed together bring you a
better steering experience.
-To loosen the truck, use the supplied Hexagon Socket to turn the Kingpin Nut
counter-clockwise. This will help you to tilt the deck more easily when turning.

©2018 WALNUTT. All Rights Reserved. 11
Cruise Function
Cruise Function
Slightly lift your front heel up and keep for 1.5 seconds, Cruise
function will be activated, speed will remain as you keep your
front heel up.
Put back down your front heel, cruise function will be
deactivated.
Alarm: D - D (Every 2s ) Headlight: Flash (Every 2s)
4WD Braking
The SPECTRA Silver come with four Hub Motor Wheels, SPECTRA can brake timely and reliably while
ensuring the safety and smoothness.
Decelerate & Brake
Shift your weight backward. The SPECTRA will gradually slow
down and stop eventually, unless you lean forward again.
Alarm: D-D-D-…… Headlight: Red Taillight: Red
Instant Stop
Jump off to the side of SPECTRA to stop it immediately. The
SPECTRA brakes all wheels until stop.
Alarm: D—Headlight: Red Taillight: Red

12 ©2018 WALNUTT. All Rights Reserved.
Speed Mode
When you are riding on the SPECTRA, three different speed modes are available. The details of each
start mode are found below.
Mode Name
Description
Beginner Mode
For beginners to get started.
Speed and acceleration are limited: Approx. 8km/h.
Sport Mode
For users familiar with the SPECTRA Silver.
Normal speed and acceleration: Approx. 15km/h
Pro Mode
For skilled users pursuing performances.
Speed and acceleration limits are relaxed: Approx. 35km/h
Ramp Assist
The SPECTRA Silver embeds inside 6-axis sensors to perceive its attitude and the slope. Whether in
uphill or downhill, you can still use the same posture to control the SPECTRA Silver freely.
Uphill
In uphill, the SPECTRA Silver will increase the motor outputs by
itself.
The maximum uphill slope is 36 %. The SPECTRA
Silver may shut off the motors if exceeding such
limit.
Long-time riding in uphill will reduce the range.
Downhill
In downhill, the SPECTRA Silver will decrease the motor
outputs and brake to slow down.
The maximum downhill slope is 25%. Exceeding such
limit may cause loss of control therefore should be
avoided.

©2018 WALNUTT. All Rights Reserved. 13
Riding Status Indicator
The Headlight and the Taillight reflect the riding status of the SPECTRA Silver. The tables below
contain more information about these indicators.
Battery Level
In normal riding, the Headlight color reflects the battery level.
Headlight
Description
—
Solid Blue-green
100%~ 20%
—
Solid Yellow
20%~ 5%
—
Solid Red
5%~ 1%
-If the battery level is low, stop riding and charge it in time to prevent over-discharge.
-Battery capacity is significantly reduced in low temperature (<0℃) environments. And
you should NOT use the SPECTRA Silver below -10℃.
Braking Status
In normal riding, the Headlight and Taillight color, as well as the alarm, reflects the braking status.
Warnings
If any abnormal status occurs, the SPECTRA Silver will warn you by the Headlight and Alarm.
Connect to the eBoard Go app for details, and contact WALNUTT or a WALNUTT authorized dealer
or designated service provider for maintenance services if necessary.
B
G
Y
R
Headlight
Taillight
Alarm
Description
—Solid Red
—Solid Red
D-D-D-……
The SPECTRA is decelerating.
D—
The SPECTRA is braking until stop.
Headlight
Alarm
Description
…… Flashing Red
DDD……
Abnormal status is detected.
R
R
R

14 ©2018 WALNUTT. All Rights Reserved.
Magnetic Charge
Charge Port
The charge port is specially designed to magnetically attach to the charger.
Charging the SPECTRA Silver
1. Remove the protective cover of the Charger.
2. Attach the charging cable to the charge port of the SPECTRA Silver.
3. Connect the Charger to an indoor power source (100-240V, 50/60Hz).
4. The Taillight indicates the connecting status, while the Charger light indicates the charging status.
Check the tables below for details.
5. Unplug the Charger from the socket after full-charge, then disconnect from the SPECTRA Silver.
6. Reattach the protective cover of the Charger.
Taillight
Description
—Solid Red
The charger is connected to the SPECTRA Silver.
Off
The charger is disconnected.
Charger Light
Description
—Solid Red
The SPECTRA Silver is charging.
—Solid Green
The SPECTRA Silver is fully charged.
R
R
G

©2018 WALNUTT. All Rights Reserved. 15
-Always turn off the SPECTRA Silver before charging it.
-FIRST attach the charger to the SPECTRA Silver, then connect the charger to the
socket.
-Use only with the provided charger unless otherwise specified. WALNUTT does
not take any responsibility for damage caused by third-party chargers.
-You should NOT charge the SPECTRA Silver if the temperature is not within
0~40℃.
-To discharge the battery, ride the SPECTRA Silver outdoors until the Headlight turns
red.
-Disconnect the charger and attach the protective cover when not in use.

16 ©2018 WALNUTT. All Rights Reserved.
eBoard Go App
The eBoard Go App is designed
specifically to interact with the
SPECTRA Silver and to explore the
world.