BUWIZZ APP USER GUIDE

BuWizz brick 2.0 & BuWizz 3.0 Pro

iOS & Android App

Table of Contents

1. QUICK START GUIDE 2

1. Introduction 3

2. Compatibility 4

3. First steps 5

4. BuWizz app installation 6

5. Connecting to your BuWizz 6

6. BuWizz 2.0 LED status 7

7. BuWizz 3.0 Pro LED status 8

8. Running BuWizz app 9

9. Advanced App Functions 25

10. Wi-Fi live stream (FPV) camera support 42

11. FAQ for BuWizz 2.0 45

12. FAQ for BuWizz 3.0 Pro 47

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1. QUICK START GUIDE

● Charge BuWizz with a USB charger

● Download BuWizz App from Play Store or App Store
● Give BuWizz App Location permission (Applies to Android)
● Turn on Bluetooth
● Enable GPS/Location (requirement by Google on Android for Bluetooth LE to
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work)
● Connect BuWizz inside BuWizz App (Do not pair in Bluetooth settings)
● Control your model and have fun!

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1. Introduction

Dear BuWizz user, thank you for purchasing the BuWizz brick.

As you can quickly figure out, BuWizz 2.0 can control four LEGO® PF motors (or lights) with smooth
precision and raw power at the same time, using a smartphone or tablet over Bluetooth LE
connection. BuWizz 3.0 Pro extends the support to LEGO® Powered Up, Spike, EV3, Boost and
Wedo 2.0 components. The PF servo motor can achieve all 15 positions (7 positions clockwise, 7
positions counterclockwise plus center position), and at least two motors (regardless if M, L or XL)
can be powered from each PF output. Power source - an embedded battery - can be charged from
fully depleted with micro USB cable from any USB output (even a laptop or PowerBank-type
battery) in about 2.5 hours. CONFID ENTIAL

BuWizz 3.0 Pro can control two LEGO® PF motors (or lights) and four Powered UP motors (or
LEDs). BuWizz 3.0 Pro can be fully charged with USB C cable in 1-2 hours.

Have at least as much fun playing with BuWizz as we have fun developing it.
Thank you for your support and feedback.

Sincerely,
The BuWizz Team
support@BuWizz.com

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2. Compatibility

BuWizz 2.0 is compatible with the following LEGO® peripherals:

- Power Functions Medium, Large, XL, Servo motor, Train motor and LED lights
- 9 V system motors, including high performance RC and BuWizz motors (PF to old 9 V
connector cable needs to be purchased separately).
- 12 V compatibility: BuWizz in Ludicrous mode can easily power old 12 V motors (Trains,
Technic) and lights
- 4.5 V compatibility: BuWizz in Slow mode can safely power old 4,5 V motors (4.5 V trains &
Technic motors) and lights
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BuWizz 3.0 Pro is compatible with the following LEGO® peripherals:

- Power Functions Medium, Large, XL, Servo motor, Train motor and LED lights
- 9 V system motors, including high performance RC and BuWizz motors (PF to old 9 V
connector cable needs to be purchased separately).
- Powered UP motors and LEDs
- Spike motors and sensors
- EV3 motors and sensors
- Boost motors and sensors
- WeDo motors and sensors

BuWizz App iOS version is compatible with following Apple products, having Bluetooth version 4.0
or higher, running iOS 9.3 or higher:
● iPhone 4S and newer iPhones (including Plus, X, SE, Pro and Pro Max models)
● iPad 3 and newer (including all iPad, iPad Pro and iPad Air versions)
● iPad Mini – all versions
● iPod touch 5th generation and newer

BuWizz App Android version is compatible with devices with BLE (Bluetooth 4.0 or higher),
running Android 4.4 or higher.

WiFi Livestream (FPV) Camera compatibility: video streaming is very demanding, so sufficient CPU
(processor) and GPU (video chip) power is needed. Higher end newer devices (i.e. iPhone 7 and
newer, iPad Air 2 and newer, flagship Android phones) will have no problem streaming video
without glitches. Older and low CPU power devices might struggle or not work at all. Please do not
expect a $100 budget Android phone to stream video from WiFi camera successfully.

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3. First steps

BuWizz 2.0:
- After receiving BuWizz brick(s), please charge them first.
- Connect a micro USB cable to BuWizz (USB charger, computer, PowerBank battery,…).
- During charging the LED may turn off, don’t worry BuWizz is still charging.
- When BuWizz is not connected to USB power, the LED will glow green regardless of battery
state.
- If BuWizz battery is depleted beyond level, suitable for normal operation, the LED will
alternate quickly between red and green for a few seconds, then BuWizz will turn off
- If BuWizz cannot be turned on by pressing the power button, then battery is completely
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depleted or battery protection kicked in.

- In either of the cases above, please connect the charger – only briefly to reset the
protection circuit or for 2-3 hours to completely charge the depleted battery.

BuWizz 3.0
- After receiving BuWizz brick(s), please charge them first.
- Connect a USB C cable to BuWizz (USB charger, computer, PowerBank battery,…).
- During charging the LED on PU port 1 will indicate charging.
- When BuWizz is not connected to USB power, the LED will glow/blink in the color of the
battery status.
- If BuWizz battery is depleted beyond level, suitable for normal operation, the LED on PU
port 1 will alternate quickly between red and green for a few seconds, then BuWizz will
turn off.
- If BuWizz cannot be turned on by pressing the power button, then battery is completely
depleted or battery protection kicked in.
- In either of the cases above, please connect the charger – only briefly to reset the
protection circuit or for 1-2 hours to completely charge the depleted battery.

BuWizz can operate with a charger connected. In fact, connecting a PowerBank type battery can
greatly extend the playtime and you can leave the battery connected to BuWizz while operating
your model.

NOTE: BuWizz turns off automatically after ~10 minutes if not in use (i.e. no commands are
received over Bluetooth connection).

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4. BuWizz app installation

iOS (iPhone, iPad, iPod Touch):

1. Go to App Store
2. Search for BuWizz and choose App(on iPad: select “iPhone Only” in the drop down menu
on the left side)
3. Install the app

Android :
1. Go to Play Store
2. Search for BuWizz and choose the BuWizz App.
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3. Install the app

We suggest you to install the latest BuWizz app and not the legacy one.

5. Connecting to your BuWizz

1. Connect electronic components to output ports

2. Press power button – LED will blink when BuWizz is not connected to app and glow
constantly when connected
3. Start BuWizz app on your device

Make sure BuWizz is fully charged. If not, please recharge BuWizz as described in section 3.
NOTE: BuWizz 2.0 cannot be turned OFF when connected to the app (LED glows solid). Please
disconnect BuWizz inside the app, and then you can turn BuWizz off by pressing the button.
Please check FAQ in chapter 9 for more info.
NOTE: BuWizz 3.0 can be turned OFF when connected by
holding the power button for ~ 3 seconds

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6. BuWizz 2.0 LED status
When BuWizz 2.0 is turned on & not connected to the BuWizz app
GREEN blinking: battery level 2/3 to Full
ORANGE blinking: battery level 1/3 to 2/3
RED blinking: battery low, please recharge
RED/GREEN blinking fast: battery critically low. BuWizz 2.0 will not work, please recharge

When BuWizz 2.0 is turned on & connected to app

GREEN constantly on: connected to app, battery level 2/3 to Full
ORANGE constantly on: connected to app, battery level 1/3 to 2/3
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RED constantly on: connected to app, battery low, please recharge

RED/GREEN blinking fast: connected to app, battery critically low. BuWizz 2.0 will not work, please
recharge

When BuWizz 2.0 is charging & turned on

ORANGE constantly on: charging (connected or not connected to app)
GREEN constantly on: fully charged (connected or not connected to app)

Firmware update
SLOWLY BLINKING RED: firmware update

NOTE: BuWizz 2.0 turns off automatically during charging. No LED is lit, but charging still
continues. Please check FAQ in chapter 9 for more info.

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7. BuWizz 3.0 Pro LED status
When BuWizz 3.0 Pro is turned on & not connected to the BuWizz app
GREEN blinking on all PU ports: battery level 2/3 to Full
ORANGE blinking on all PU ports: battery level 1/3 to 2/3
RED blinking on all PU ports: battery low, please recharge
RED/GREEN blinking fast on PU port 1: battery critically low. BuWizz 3.0 Prowill not work, please
recharge

When BuWizz 3.0 Pro is turned on & connected to app

GREEN constantly on all PU ports (Unless changed by user): connected to app, battery level 2/3 to Full
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ORANGE constantly on all PU ports (Unless changed by user): connected to app, battery level 1/3 to
2/3
RED constantly on all PU ports (Unless changed by user): connected to app, battery low, please
recharge
RED/GREEN blinking fast on PU port 1: connected to app, battery critically low. BuWizz 3.0 Pro will not
work, please recharge

When BuWizz 3.0 Pro is charging & turned on

GREEN breathing on PU port 1, other PU ports blinking according to the state of battery.

When BuWizz 3.0 Pro is charging & turned on

GREEN breathing on PU port 1, other PU ports are off

Firmware update
PU Ports 1&2 and 3&4 are blinking RED/GREEN alternately
All PU ports are blinking in a RED spinning pattern

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8. Running BuWizz app

IMPORTANT for Android:

Please grant BuWizz app “Location Permission”, or the app will not work
GPS/Location must be turned on or Bluetooth scan will not work (requirement by
Google)

Note, you can find following video tutorials for BuWizz app on BuWizz’s Youtube
channel:
BuWizz App Quick look and tutorial: https://youtu.be/ZgCNt7FwQkY
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Simple car set-up tutorial: https://www.youtube.com/watch?v=K04dYWdDqYw

Tracked vehicle set-up tutorial: https://www.youtube.com/watch?v=WsMuO5tcz_w

2. Start the BuWizz App

3. Use already premade profiles, press Plus Symbol to create a new profile, or press
Import icon to import a profile.

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4. Once you create a new profile, you can rename it by clicking on the name in the top left
corner:

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5. You can choose custom profile’s photo from camera or gallery:

6. Select the Controls layout window to set up your controls:

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7. Press the + to add gauges and controls:

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8. Slide down the Select control window to choose controls

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9. Hold and drag the control to place it in the Controls layout.

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10. Tapping on the control allows you to modify its attributes:

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11. To change the size of a control, select the resize option and slide left/right.

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12. Tap the label option to add a helpful text label for the current control

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13. You can use above steps to add a Horizontal slider and BuWizz Battery voltage indicator:

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14. You can change the profile background by tapping the paintbrush icon in the top left
corner of the Controls layout.

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15. You can choose from multiple colors or use a custom image or video for background.

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16. Once you set up your Controls layout go back to the main menu and select Link BuWizz
outputs to link controls to output ports.

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17. Inside Link BuWizz outputs you can select available BuWizz bricks or select a template:

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18. Once you select the BuWizz brick/template you can start assigning the
ports/functions/gauges.

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19. For this example we tap inside the SOURCE window, which opens up our custom Control
Layout preview.

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20. Choosing the Drive slider links it to PU port 1. Press the checkmark icon to confirm
selection.

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21. Linked controls are shown in Link BuWizz outputs window. You can assign same control
to multiple sources.

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22. To reverse a port output tap the symbol.

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23. You can test the output ports by pressing symbol as seen below. This will cause the
PU port 1 to pulsate.

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24. To link a gauge to the BuWizz we select the Gauges filter:

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25. Here we link the voltage gauge to the BuWizz:

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26. You can select the LED colors of each PU port by pressing the symbol next to it. This
will open the RGB color mixer:

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27. Pressing the symbol sets the same color value on all PU ports:

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28. Press DRIVE once all the controls are linked to your BuWizz.

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29. App is now connected and ready to play. Connection status is shown in the top of the
window.

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 30. When you are finished playing press the back arrow to leave the control window. To
disconnect from the BuWizz press back again to leave the control profile.

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31. You can Export a profile in order to share or save it by selecting the Share symbol next to
the profile. This allows you to save a profile or share it using apps installed on your device.
Pressing the Share symbol on the bottom exports ALL profiles as a .zip file.

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32. To delete a profile select it and press the trash symbol .

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9. Advanced App Functions

BuWizz App allows you to check, rename, update your BuWizz brick and set up
advanced control functions such as Mixers, Power Curves and PU motor center
steering

BuWizz manager – BuWizz 2.0 and 3.0.

1. To access the BuWizz manager, press the gear icon in the top right corner of the BuWizz app.
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2. A list of available BuWizz devices will be shown with detailed information:

3. Here you can rename, reboot, test and update the BuWizz bricks. Please note that the shake-
to-wake, rename and firmware update is currently only available for BuWizz 3.0.

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4. Firmware updates are mandatory and the app automatically checks if your BuWizz bricks
have the latest firmware each time you connect to them. Firmware update process for
BuWizz 3.0 goes as following:

• During the firmware update you will be greeted with some information about the update
process.
• After clicking continue the update process will begin.
• The update screen will be showing some update log messages which will help you to
track the progress of the update and also provide us with additional info, if something
goes wrong during the update.
• The Tajnik update consists of 3 blocks and it takes about 20 seconds for each block to
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finish (may vary between different control devices).

• The Nordic update consists of 15 blocks and it takes about 5 seconds for each block to
finish (may vary between control devices).
• The update process will restart by itself 4 times if it detects any problems during the
update. After a successful update you will be shown a dialog informing you about the
completed update. At this point, the device will turn off by itself, which is a normal part
of the firmware update.
• You can now exit the manager and use your BuWizz device.

Please note if the update process fails after 4 attempts, please try again. If the issue persists,
contact the technical support.

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Center steering – BuWizz 3.0 Pro only
Center Steering Module allows you to center the steering mechanisms which use the PU L and
XL ,and Spike Prime motors for steering. THE MOTOR MOVEMENT ANGLE HAS TO BE
MECHANICALLY LIMITED in order for Center Steering calibration to succeed. Example of a simple
mechanical angle limiter below:

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5. To access the Center Steer module go to the Link output windows and select the first output
you want the mixer to apply for – in this case PU Source 2.

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6. Instead of choosing the controls tab, choose the logic modules tab and press the + symbol to
add the Center Steer module.

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7. Pressing the gear icon will open the menu with the following settings:

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8. Description of the centering settings:

● Offset from the maximum steering angle – This setting represents offset from the
maximum angle found during calibration. It should be used in order to stop the motor
stalling once the steering reaches the mechanical limits. Recommended offset from the
steering max: 3° - 10°.
● Centering PWM power – Power used to calibrate the steering. Use as low as possible
while still having enough to steer the wheels. WARNING, if the power is set too high it
can stall and temporarily disable the motor! We recommend starting at 50% and try the
steering calibration. If you notice that the model does not reach the desired steering
angle, increment this setting by a few % and try the calibration again.
● Centering PWM time – The time the center steering module spends steering the wheels
in each direction. If the time is too low the motor may not reach the final position, longer
times are recommended for models with large gearing or rack lengths. Recommended
time: 2.0 seconds.

9. The Center Steering Module already comes with three safe presets:
● The light preset is designed for models such as 42124 Off-Road Buggy.
● Medium setting is designed for a model such as 42099 4x4 X-treme Off-Roader.
● Heavy setting is set up for heavy models like 42114 Articulated Hauler.

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10. Custom steering module settings allow the user to change the controller parameters at their
own risk.

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11. Summary of the steering parameters and their effects:

● Kp - this is the main proportional influence of the steering controller, it tells the steering
with what kind of a gain it should work. Having it low reduces the steering response,
having it too high can cause it to oscillate. Recommended setting: 0,5 – 3,0.
● Ki - This is the integral influence of the controller, having it too high can cause oscillation.
Recommended setting 0.01.
● Kd - This is the derivative influence of the controller. Recommended setting is -1.0, but it
can be increased to -0,5 for heavy models where the steering system is slower.
● outLP - this is an output low pass filter which can be used to slow the system down in
order to prevent oscillations, but it's not needed most cases. Recommended setting: 0.
● D_LP - This is an additional derivative low pass filter which can be used if needed.
Recommended setting: 0
● DeadBandOut - this factor sets a dead point band for the servo output, having it too low
may cause the servo to constantly try to adjust the position, having it too high will cause
the steering to be less accurate. Recommended setting: 5 – 20.
● DeadBandOutBoost - This is the boost the servo motor receives to move the steering
from standstill. Some boost is recommended to overcome the initial friction and inertia
but having it too high may cause oscillations. Recommended setting: 5 - 20.
● Liml - limits the integral part of the controller. Recommended setting: 20.
● LimOut - limits the current consumption of the servo motor. Reducing it may reduce the
torque of the steering system. Recommended setting 25 - 127.
● Reference rate limit affects the speed of the entire servo steering system. Recommended
setting 25+ for lighter models and lower for heavier models.

Recommendation: Changing the Kp, DeadbandOut, DeadBandBoost and ReferenceLimit is

usually enough for basic fine tuning of the center steering module. Other parameters can usually
be left at default settings.

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12. Once all parameters are set, link the CONTROL to the steering slider.

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13. Once set go back to the Link Output Windows and select the Buwizz.

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14. Select the Steering calibration. This will calibrate your steering and save the values into the
profile for future use. You have to calibrate your steering after each change of the settings.

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Tracked steer mixer
Tracked steer mixer allows easier control of vehicles with independent motors for left and right
side hand drive. It automatically calculates the output power levels for the drive motors
according to the input drive and steer sliders and steering factors.
Tutorial for setting up the Mixer module for a simple tracked vehicle can be found here:
https://www.youtube.com/watch?v=WsMuO5tcz_w
1. To access Tracked Steer mixer go to the Link output windows and select the first output you
want the mixer to apply for – in this case PU Port 1.

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2. Instead of choosing the controls tab, choose the logic modules tab and press the + symbol to
add the Tracked Steer module.

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3. Add the Tracked Steer module:

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4. Tapping the Gear symbol allows you to configure the Tracked Steer Mixer. Tapping drive and
steer allows you to link the sliders. Tapping LEFT or RIGHT links that Mixer output to BuWizz
port.

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5. You can configure the steering factor and reverse it. Default steering factor setting is 1,
which is a maximum setting. Steering factor 1 causes the drive motors to spin in opposite
direction at full power when the steering slider is at maximum and the drive slider is at 0.
Lowering the steering factor will reduce the difference between drive motors at full steering.
For vehicles with classic steering and independent left and right motor control you can
reverse the steering factor by tapping “when going backwards” option.

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Power curves
Power curves allow you to adjust the way the port outputs react to the slider inputs.
They are useful for uses such as adjusting the motor’s response, limiting output power,
correction of steering angles, etc…
For an introduction to Power Curves, please check the following video tutorial:
https://www.youtube.com/watch?v=qKsz6B3FO5s

1. To access Power Curves go to Link BuWizz outputs window and select Power Curve filter.

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2. The following graph will be shown in the default curve:

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3. You can easily adjust the graph by moving the center and end points:

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4. By tapping on the graph line you can add additional points (up to 10 points max):

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5. Tapping individual points allows you to remove them:

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6. Pressing the ⟳ in the right corner will reset the power curve to default.
7. By selecting Mode you can choose between two default curves – Linear and Exponential. We
suggest you use exponential functions for drive motor control and linear for servo motor
control.

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Examples for the use of Power curves
1. Power curves can be used to limit the power going to the motor:

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2. You can offset the Power curves when used with a servo motor in order to adjust your
model’s steering angle:

Tutorial for steering correction using Power curves can be found here:
https://www.youtube.com/watch?v=F_kjAfVWiuk

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3. Power Curves can be used to keep motor spinning in one direction only:

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Tutorial to keep the motor spinning in one direction only can be found here:
https://www.youtube.com/watch?v=jmXSRX6NprE

4. You can make your model crawl slowly when there is no input by offsetting the Power Curve.

Tutorial to make your model crawl can be found here:

https://www.youtube.com/watch?v=JE6o2v8cLno

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Ramp function
Ramps allow you to adjust the time needed for the port output to reach the level set by the
slider input.
They are useful for smooth acceleration and deceleration which is useful such as for heavy
models.
1. To access ramp go to Link BuWizz outputs window and select Ramp filter.

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2. Here you can set the Ramp Up and Ramp Down time in seconds.

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10. Wi-Fi live stream (FPV) camera support

BuWizz App allows you to connect to a Wi-Fi live stream (FPV – First Person View) camera in order
to project the camera’s image in the background of the control profile.

In order to use this function, you will need a compatible Wi-fi camera, which is sold in BuWizz
online shop.

1. Turn on the Wi-Fi camera

2. Press ARROW DOWN BUTTON on the right side of the camera to enable it’s Wi-Fi
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3. In your control device’s Wi-Fi settings connect to iCam Wi-Fi Network

4. Insert camera’s Wi-Fi PASSWORD which is 1234567890
5. In the Custom Profile - Background choose Video option and select Default Camera:

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6. If you have some other camera, you can choose Custom URL and enter your camera’s
streaming URL here.
NOTE: you will need to get streaming URL information from the camera vendor. We offer
support for the BuWizz WiFi camera (FPV) sold in BuWizz web store only. We cannot
guarantee other cameras to work, even if they are visually similar.

7. For better visibility you can reduce controls opacity:

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8. Press start and enjoy controlling your model via live stream.

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11. FAQ for BuWizz 2.0

Issue Support
nr. Symptom Proposed solutions Category video
1. Charge BuWizz for 3 hours
2. Check your charger and cable are
working properly
3. Note, BuWizz turns off
BuWizz does not turn on when pressing the automatically during charging. No
1 LED is lit, but charging still
Issue N/A
button
continues
4. In case BuWizz still does not turn
on after charging for 3 hours,
contact technical support
1. Battery level between full and
2 Why is BuWizz LED shining/blinking green? CONFID ENTIAL

2/3
Question
1. Battery level is between 2/3 and
3 Why is BuWizz LED shining/blinking orange? 1/3
Question https://youtu.
1. Battery level is under 1/3 be/EBNl-
4 Why is BuWizz LED shining/blinking red? 2. Recharge BuWizz
Question
YeFrFM
1. Quick blinking of red and green
Why is BuWizz LED quickly blinking
5 LED means battery is critically low Question
red/green? 2. Recharge BuWizz
1. Keep the BuWizz on until the
battery is empty and the LED stops
blinking. Afterwards recharge it and
6 BuWizz's LED is slowly blinking red the issue should be resolved. In
Issue N/A
case of furthermore issues contact
support.
1. BuWizz is connected to the app
and will therefore not turn off
2. Close BuWizz app and try turning
BuWizz will not turn off when pressing the
7 off BuWizz again Issue N/A
button 3. If BuWizz still does not turn off,
turn off Bluetooth on your phone
and try turning off BuWizz again
1. It is possible, but performance
will suffer
2. 4x Buggy/RC motors is an
extreme setup
Is it possible to power 4 lego RC motors with
8 3. We recommend using 2x BuWizz. Question N/A
one BuWizz? 4. In ludicrous mode, you will
experience over-current limiter
engaging and your model can stop
responding
This is an Android requirement, we
do not need your location. All apps
which use Bluetooth LE need to
9 Why does BuWizz need location permission? have location permission (and
Question N/A
Location set to "ON") or Bluetooth
scan does not work
1. DO NOT pair BuWizz with
bluetooth
10 BuWizz will not pair with the phone 2. Pairing should not be performed
Issue N/A
3. Use BuWizz app to connect
1. Check your device is compatible
with the BuWizz app (Bluetooth 4.0
or higher), running Android 4.4 or
higher.
2. Give BuWizz app permission to
access location information
11 BuWizz is not visible in the app 3. Turn on bluetooth Issue N/A
4. Make sure your device is not
outside the Bluetooth range -
suggested range for detection of
BuWizz is under 5 meters
5. In case the problem persists,
contact technical support
BuWizz is visible in the app, but will not 1. Make sure your device is not
12 outside the Bluetooth range -
Issue N/A
connect

Moves your bricks. Fast. 45 UG_1.8 © 2021 BuWizz

 suggested range for detection of
BuWizz is under 5 meters
2. Turn off BuWizz for 3 seconds
and try reconnecting
3. Restart the BuWizz app
4. In case the problem persists,
contact technical support
13 BuWizz works but at extremely low range 1. Contact technical support Issue N/A
1. BuWizz's internal overcurrent
protection is tripping due to the
current spikes due to the fast speed
changes
2. Do not connect more than 2x XL,
2x L, 2x M or 1x RC or 1x BuWizz
motor per output
3. Use Ramp functions to set long
My model loses connection when enough ramp-up time https://youtu.
4. Make sure to control motors
14 accelerating, braking or reversing in high CONFID ENTIAL

carefully, avoiding quick speed

Issue be/UdWjysslE
speed/ludicrous mode changes and reversals of the power e8
sliders.
5. In cases where swift control and
reversals of motors are needed, use
Slow or Normal mode.
6. Run several BuWizz bricks in
parallel to increase number of
motors running in parallel for huge
models.
1. BuWizz will stop responding if
the model leaves the range - for
best performance keep your model
App connects to BuWizz, but after a while with 15 meters of range
2. Battery is empty - recharge
15 model BuWizz
Issue N/A
stops responding 3.Under heavy load and drained
battery, BuWizz will reset itself and
terminate connection - recharge
BuWizz
1. Check that BuWizz is still turned
on (BuWizz turns off automatically
if no commands are received for 10
BuWizz stops responding when control minutes)
16 2. Exit the control profile and
Issue N/A
device has not been used for a while
reconnect to BuWizz
3. In case of connection issues
restart BuWizz or the app

Moves your bricks. Fast. 46 UG_1.8 © 2021 BuWizz

12. FAQ for BuWizz 3.0 Pro

Issue Support
nr. Symptom Proposed solutions Category video
1. Charge BuWizz for 3 hours
2. Check your charger and
cable are working properly
3. PU Port 1's LED should
1 BuWizz does not turn on when pressing the button indicate charging Issue N/A
4. In case BuWizz still does not
indicate charging or turn on
after charging for 3 hours,
contact technical support
CONFID ENTIAL

1. Battery level between full

2 Why are BuWizz LEDs shining/blinking green? and 2/3
Question
1. Battery level is between
3 Why are BuWizz LEDs shining/blinking orange? 2/3 and 1/3
Question
1. Battery level is under 1/3
4 Why are BuWizz LEDs shining/blinking red? 2. Recharge BuWizz
Question N/A
1. Quick blinking of red and
green LED means battery is
5 Why is BuWizz PU port 1 LED quickly blinking red/green? critically low
Question
2. Recharge BuWizz
PU Ports 1&2 and 3&4 are blinking RED/GREEN
alternately 1. Hold the power button for
6 5 seconds to reset the BuWizz
Issue N/A
All PU ports are blinking in a RED spinning pattern

This is an Android
requirement, we do not need
your location. All apps which
9 Why does BuWizz need location permission? use Bluetooth LE need to have Question N/A
location permission (and
Location set to "ON") or
Bluetooth scan does not work
1. DO NOT pair BuWizz with
bluetooth
10 BuWizz will not pair with the phone 2. Pairing should not be Issue N/A
performed
3. Use BuWizz app to connect
1. Check your device is
compatible with the BuWizz
app (Bluetooth 4.0 or higher),
running Android 4.4 or higher.
2. Give BuWizz app
permission to access location
information
3. Turn on bluetooth
11 BuWizz is not visible in the app 4. Make sure your device is
Issue N/A
not outside the Bluetooth
range - suggested range for
detection of BuWizz is under 5
meters
5. In case the problem
persists, contact technical
support
1. Make sure your device is
not outside the Bluetooth
range - suggested range for
detection of BuWizz is under 5
meters
12 BuWizz is visible in the app, but will not connect 2. Turn off BuWizz for 3 Issue N/A
seconds and try reconnecting
3. Restart the BuWizz app
4. In case the problem
persists, contact technical
support

Moves your bricks. Fast. 47 UG_1.8 © 2021 BuWizz

 1. BuWizz's internal
overcurrent protection is
tripping due to the current
spikes due to the fast speed
changes
2. Do not connect more than
2x XL, 2x L, 2x M or 1x RC or
1x BuWizz motor per output
3. Use Ramp functions to set
long enough ramp-up time
My model loses connection when accelerating, braking or 4. Make sure to control
14 motors carefully, avoiding
Issue N/A
reversing hard
quick speed changes and
reversals of the power sliders.
5. In cases where swift control
and reversals of motors are
needed, use Slow or Normal
mode.
CONFID ENTIAL

6. Run several BuWizz bricks

in parallel to increase number
of motors running in parallel
for huge models.
1. BuWizz will stop responding
if the model leaves the range -
for best performance keep
your model with 15 meters of
range
App connects to BuWizz, but after a while model
15 2. Battery is empty - recharge Issue N/A
stops responding BuWizz
3.Under heavy load and
drained battery, BuWizz will
reset itself and terminate
connection - recharge BuWizz
1. Check that BuWizz is still
turned on (BuWizz turns off
automatically if no commands
BuWizz stops responding when control device has not are received for 10 minutes)
16 2. Exit the control profile and
Issue N/A
been used for a while
reconnect to BuWizz
3. In case of connection issues
restart BuWizz or the app
1. Some newer chargers
require communication in
order to charge the device
which is not possible if the
17 BuWizz will not charge BuWizz is too drained or
Issue N/A
turned off. 2. Turn on/charge
BuWizz with an older charger
or via USB port of a PC.
1. Try updating the firmware
again.
18 Firmware update failure 2. If issue persists contact
Issue N/A
support.

LEGO®, MINDSTORMS®, DUPLO® are trademarks of The LEGO Group, which does not sponsor, authorize or endorse us in any way.

All Trademarks are property of their respective owners.

Moves your bricks. Fast. 48 UG_1.8 © 2021 BuWizz