Hospitality

HolaBot -- Support Manual

Hospitality delivery robot with calling and notification capabilities, four adjustable trays, gesture sensor, and voice control for restaurants, hotels, and service environments.

Page 1: Overview

What is the HolaBot?

HolaBot is a hospitality delivery robot built by HUTECH Robotics for restaurants, hotels, and commercial service environments. It combines autonomous delivery with a calling and notification system, allowing staff to summon the robot remotely and receive voice alerts when it arrives at a destination.

The robot features four adjustable trays with an ultra-large 120-litre volume, making it one of the highest-capacity models in the range. Each tray supports up to 15 kg on flat surfaces. HolaBot uses visual-laser fusion SLAM for positioning and navigation, and offers contactless interaction through an infrared gesture sensor and voice commands via a 6-microphone circular array.

HolaBot supports four operating modes -- Delivery, Collection, Cruise, and Direct -- plus five calling methods including watch, PuduLink app, pager, NFC, and beeper calling. The robot runs on Android with a 10.1-inch LCD screen and a dot matrix display that shows expressive facial animations to indicate status.

Models and Variants

Model Description
HL100 Standard HolaBot
HLFR01 HolaBot variant

At a Glance

Page 2: Specifications

Feature Description
Product model HL100, HLFR01
Operating voltage DC 23-29.4 V
Power input AC 100-240 V, 50/60 Hz
Power output 29.4 V / 8 A
Battery capacity 25.6 Ah
Charging time 4.5 hours
Battery life 10-24 hours
Cruise speed 0.2-1.2 m/s (adjustable)
Navigation Laser and visual integrated SLAM positioning
Minimum travel width 70 cm
Maximum surmountable height 7 mm
Maximum climbing angle 5 degrees
Tray dimensions 390 mm x 360 mm, 120 L ultra-large volume
Number of trays 4 (adjustable)
Height between trays Top to bottom: 216 mm / 184 mm / 184 mm / 184 mm
Tray load Flat surface: 15 kg/layer; Obstacle crossing (5 mm): 10 kg/layer
Machine material ABS / aviation grade aluminium alloy
Robot weight 55 kg
Robot dimensions 542 mm x 534 mm x 1228 mm
Screen 10.1-inch LCD screen
Operating system Android
Microphone 6-mic circular array kit
Speaker power 2 x 10 W stereo speakers
Working environment Temperature: 0-40 C; Humidity: 85% RH or less
Storage environment Temperature: -40 to 65 C; Humidity: 85% RH or less
Working altitude Below 2000 m
Surface requirement Indoor, flat and smooth ground
IP rating Robot: IP20; Tray compartment: IPX5
Connectivity Wi-Fi (2.4G/5G), Bluetooth, 3G, 4G LTE

Sensor Details

Sensor Height from Bottom Field of View
LiDAR 0.21 m 220 degrees
Upper RGBD (Astra mini) 1 m 58 degrees horizontal, 45 degrees vertical
Upper RGBD (HP60) 1 m 74 degrees horizontal, 59 degrees vertical
Lower RGBD (D430) 0.12 m 85 degrees horizontal, 58 degrees vertical
Lower RGBD (Dabai) 0.12 m 65 degrees horizontal, 45 degrees vertical

Page 3: Product Components

HolaBot — Appearance and Components
Component diagram — HolaBot

External Components

  1. LCD screen -- 10.1-inch touchscreen for task management, settings, and status display
  2. Dot matrix screen -- Expressive facial display showing robot status (eyes open = moving, blinking = arrived, sleepy = low battery)
  3. Trays (4 levels) -- Adjustable-height delivery surfaces, 390 mm x 360 mm each
  4. Light strips -- Visual status indicators around the robot body
  5. Lightning button -- Physical pause/resume button for quick control without touching the screen
  6. Power switch -- Press and hold to power on/off
  7. Battery box -- Houses the battery; back cover must be pushed into place for operation
  8. Charging jack -- Port for direct charger connection
  9. Emergency stop switch -- Red button; press to halt all movement immediately

Sensors and Navigation

  1. LiDAR -- Laser-based mapping and navigation sensor
  2. Depth vision sensors -- 3D depth perception for obstacle detection
  3. Vision sensor -- Camera for visual positioning
  4. Infrared gesture sensor -- Contactless hand gesture interaction
  5. 6-mic circular array kit -- Microphone array for voice commands and interaction

Ports and Interfaces

  1. Drive wheels -- Main locomotion wheels
  2. Auxiliary wheels -- Support and stability wheels

Page 4: Safety Instructions

Before You Start

Electrical Safety

Operating Safety

Environmental Requirements

Warnings

Page 5: Basic Operation

Powering On

  1. Turn the key switch to the ON position.
  2. Ensure the battery back cover is pushed back into place.
  3. Press and hold the power switch for 1 second.
  4. The light strips and dot matrix screen flash, confirming power on.
  5. Wait 30-60 seconds for the Android system to fully boot.

Powering Off

  1. Press and hold the power switch for 3 seconds.
  2. The Power Off option appears on the screen.
  3. Tap Power Off.
  4. Light strips, dot matrix screen, and LCD screen turn off, confirming shutdown.

Pausing Operation

Two methods are available:

Emergency Stop

  1. Press the red emergency stop switch. The robot halts immediately.
  2. To resume, rotate the emergency stop switch clockwise to release.
  3. Tap the screen or press the lightning button to resume normal operation.

Moving the Robot Manually

Map Creation

HolaBot supports three mapping methods:

  1. Marker mapping -- Uses ceiling-mounted markers for visual positioning.
  2. Laser mapping -- Uses LiDAR to create an environment map.
  3. Marker + Laser fusion mapping -- Combines both methods for improved accuracy.

The mapping method is selected during the installation and deployment process by a technical engineer.

Important: Maps do not synchronise automatically. If changes are made (adding or removing table locations), the updated map must be manually synchronised via Map Settings.

Advanced Settings Access

To access Advanced Settings, tap on a blank area of the screen repeatedly. A password prompt will appear. Enter the administrator password.

Page 6: Charging and Battery

Charging Methods

Direct charger connection:

  1. Locate the charging jack on the robot.
  2. Insert the original charger plug.
  3. Ensure the charger fastener clicks firmly into place.
  4. A full charge takes approximately 4.5 hours.
  5. Do not use the robot during charging.

Note: The HolaBot can be charged even when the key switch is in the OFF position. Simply connect the charger and ensure the fastener clicks into place.

Battery Information

Specification Value
Battery capacity 25.6 Ah
Operating voltage DC 23-29.4 V
Charger output 29.4 V / 8 A
Charging time 4.5 hours (empty to full)
Battery life 10-24 hours depending on usage

Charging Indicators

Battery Care Tips

Low Battery Cruise Behaviour

Page 7: Modes and Functions

Delivery Mode

What it does: Carries items (food, drinks, supplies) from a service point to designated locations. Staff or customers load trays at the origin and the robot navigates autonomously.

How to use: 1. Select Delivery Mode on the screen. 2. Load items onto the trays. 3. Assign destination locations. 4. Tap "Go" to start delivery. 5. The robot navigates to each destination. 6. The robot returns to the service point.

Settings: - Delivery in the order of trays: top to bottom (or distance-priority when disabled). - Single-pallet multi-delivery: a single tray can deliver to up to 20 locations. - Hide arrival locations: hides destinations on-screen during delivery. - Repeat previous task: repeats the last task after completion. - Auto-complete pick-up time: 5-600 seconds (default 30). - Arrival voice and music: configurable separately for delivery and return.

Best for: Restaurants, hotels, canteens, room service.

Collection Mode

What it does: Visits designated locations to collect used dishes, trays, or other items, then returns them to a clearing area.

How to use: 1. Select Collection Mode on the screen. 2. Set collection locations (up to 20 per task). 3. Tap "Go" to start. 4. The robot visits each location, collects items, and returns to the clearing area.

Settings: - Collection in the order of trays: top to bottom (or nearest-first when disabled). - Repeat previous task: retains previous task configuration.

Best for: Bussing tables in restaurants, clearing items in canteens.

Cruise Mode

What it does: The robot follows a predetermined route with optional stopping points for display, promotion, or continuous availability of items.

How to use: 1. Select Cruise Mode on the screen. 2. Configure the route with stopping points. 3. Set stay time at each point. 4. Start the cruise.

Best for: Promotions, exhibitions, buffet-style service.

Direct Mode

What it does: The robot goes to a single destination without following a multi-stop route. Useful for one-off, on-demand deliveries.

How to use: 1. Select Direct Mode on the screen. 2. Choose a single destination. 3. Tap "Go" to start. 4. The robot goes directly to the destination and returns.

Best for: On-demand single deliveries, ad-hoc requests.

Steady Mode

What it does: Limits the robot's maximum speed for smoother, more stable delivery of delicate items.

How to use: 1. Go to Speed Settings. 2. Enable Steady Mode. 3. The robot now moves at a reduced speed during delivery.

Best for: Soups, drinks, and other items that may spill during normal-speed delivery.

Calling and Notifications

What it does: Staff can summon the robot remotely. The robot provides voice notifications when it arrives.

Five calling methods: 1. 4G watch calling -- Call the robot using a 4G-enabled watch. 2. PuduLink app calling -- Call the robot from the PuduLink mobile app. 3. Pager calling -- Use a pager to call the robot. 4. NFC calling -- Tap an NFC tag to call the robot. 5. Beeper calling -- Use a PuduBeeper to call the robot.

The available methods depend on accessories purchased and network configuration.

Additional Features

Voice Control: The 6-microphone circular array enables hands-free voice commands. Ensure the microphone area is not covered and background noise is manageable.

Gesture Sensor: The infrared gesture sensor allows contactless interaction. Wave a hand near the sensor to dismiss the robot or confirm delivery receipt. Useful when staff or customers have their hands full.

Dot Matrix Expressions: The dot matrix screen displays facial expressions to indicate status: - Eyes open = moving - Blinking = arrived at destination - Sleepy/droopy eyes = low battery These expressions cannot be changed or disabled.

Lightning Button: A physical button on the robot for quick pause and resume without using the touchscreen.

Automatic Gate Crossing: HolaBot supports automatically crossing gates with compatible Bluetooth or sensor-based systems. Configured during installation.

LoRa Module: - HolaBots without two holes on the upper computer have an installed LoRa module. - Old LoRa module: for central control LoRa watch. - New LoRa module: for the pager.

Page 8: Maintenance and Servicing

Maintenance Schedule

Part Frequency Method
Drive wheels Weekly (powered off) Wipe surface with a clean cloth; check for debris
Auxiliary wheels Weekly (powered off) Wipe surface with a clean cloth; check for debris
Trays Weekly (powered off) Wipe with a clean cloth. Scrub oil stains on silicone pads with water and dry immediately
Vision sensor Weekly (powered off) Clean with a cloth or lens cleanser
Depth vision sensors Weekly (powered off) Clean with a cloth or lens cleanser
LiDAR Weekly (powered off) Clean with a cloth or lens cleanser
Robot body Monthly (powered off) Wipe surface with a clean cloth

Cleaning the Robot

  1. Always power off the robot before any cleaning or maintenance.
  2. Use a clean, dry cloth for body surfaces.
  3. Use lens cleaning products for sensors and cameras.
  4. For tray silicone pads with oil stains, scrub with water and dry thoroughly.
  5. If a sensor becomes splashed or contaminated during service, clean it immediately -- do not wait for the weekly schedule.
  6. Never use harsh chemicals or corrosive substances.

When to Replace Parts

Page 9: Troubleshooting

Robot does not power on

What you see: No response when pressing power switch. Light strips do not flash. Screens remain dark.

Likely causes: Key switch not in ON position. Battery back cover not pushed back. Battery completely drained.

What to check: 1. Verify the key switch is turned to the ON position. 2. Confirm the battery back cover is properly pushed back into place. 3. Check if the robot has been charged recently. 4. Connect the charger and wait 10-15 minutes, then try again.

Solution: Turn key switch to ON. Push battery cover back. Charge the battery.

Escalate if: The robot does not power on after confirming key switch, battery cover, and adequate charge.

Robot does not charge

What you see: No charging indication. Battery level does not increase while connected to charger.

Likely causes: Charger fastener not fully engaged. Dirty charging jack. Faulty charger. Incorrect power supply voltage.

What to check: 1. Ensure the charger fastener is fully clicked into the charging jack. 2. Inspect the charging jack for dirt or debris and clean if necessary. 3. Verify the wall outlet is working. 4. Check that the supply voltage is within AC 100-240 V range. 5. Try a different original charger if available.

Solution: Reseat charger firmly until fastener clicks. Clean charging jack. Replace faulty charger with original only.

Escalate if: Charging fails after all checks.

Robot moves abnormally or loses navigation

What you see: Robot drifts off route. Robot stops mid-path. Robot appears confused about its location.

Likely causes: Top camera or sensors obstructed or dirty. Robot not started from correct startup location. Environment has changed since map creation.

What to check: 1. Pause the current task. 2. Check that nothing is covering the top camera or vision sensors. 3. Clean all sensors (vision sensor, depth sensors, LiDAR) with a cloth or lens cleanser. 4. Verify the robot was started from the designated startup location. 5. Check if furniture or obstacles have been moved since the map was created.

Solution: Clean sensors. Restart from correct startup location. Remap if the environment has changed significantly.

Escalate if: Navigation issues persist after sensor cleaning and map verification.

Robot stops and will not resume

What you see: Robot halts during a task. Tapping screen or pressing lightning button does not resume movement.

Likely causes: Emergency stop engaged. Sensor detecting persistent obstacle. Software freeze.

What to check: 1. Check if the emergency stop switch is pressed down. If so, rotate clockwise to release. 2. Tap the screen or press the lightning button to attempt resume. 3. Look for any objects near the sensors that might be detected as obstacles. 4. Clean the depth vision sensors and LiDAR. 5. If unresponsive, power off and restart the robot.

Solution: Release emergency stop. Clear obstacles from sensor field. Clean sensors. Restart if needed.

Escalate if: The robot frequently stops and will not resume.

Screen is unresponsive or blank

What you see: LCD screen does not respond to touch. Screen remains black. Dot matrix screen works but LCD does not.

Likely causes: Software crash. Robot not fully booted. Screen hardware failure.

What to check: 1. Confirm the robot is powered on (check light strips and dot matrix screen). 2. Wait 30-60 seconds for the Android system to finish booting. 3. Try pressing the lightning button to interact with the robot. 4. Power off completely and restart.

Solution: Allow full boot time. Restart the robot. Use the lightning button as an alternative control.

Escalate if: The LCD screen remains unresponsive after a full restart.

Emergency stop will not release

What you see: Emergency stop button appears stuck or does not pop back when rotated.

Likely causes: Button mechanism jammed. Physical damage to the switch.

What to check: 1. Rotate the emergency stop switch clockwise firmly but gently. 2. Check for any visible damage or debris around the switch. 3. Do not force the mechanism if it feels jammed.

Solution: Rotate clockwise to release. If stuck, do not force it.

Escalate if: The emergency stop switch cannot be released. The robot requires professional service. Do not attempt to disassemble.

Battery drains faster than expected

What you see: Runtime significantly shorter than 10-24 hour range. Frequent recharging needed.

Likely causes: Habitual low-battery operation. Heavy tray loads. High speed setting. Battery aging.

What to check: 1. Review charging habits: is the robot regularly run below 20% before charging? 2. Check if tray loads are within the rated 15 kg (flat) or 10 kg (obstacle crossing) limits. 3. Review speed settings and reduce if set to maximum. 4. Note the robot age and approximate number of charge cycles.

Solution: Charge before 20% consistently. Reduce tray loads. Lower speed. Request battery replacement if degraded.

Escalate if: Battery performance continues to decline despite proper charging practices.

Light strips not working

What you see: Light strips do not illuminate during operation. Light strips flash abnormally.

Likely causes: Software issue. Loose internal connection. LED hardware failure.

What to check: 1. Restart the robot and observe if light strips activate during boot. 2. Check if the light strip behaviour corresponds to a specific error state (refer to operation guide). 3. Note whether all strips are affected or only specific sections.

Solution: Restart the robot. If light strips do not activate at all after restart, the issue is likely hardware.

Escalate if: Light strips remain non-functional after restart.

Voice control or calling function not responding

What you see: Robot does not respond to voice commands. Calling notifications do not play. Microphone appears inactive.

Likely causes: Microphone array obstructed. High ambient noise. Software configuration issue.

What to check: 1. Ensure the 6-mic circular array area is not covered or blocked. 2. Test in a quieter environment to rule out ambient noise interference. 3. Verify that voice control and calling features are enabled in the robot settings. 4. Restart the robot.

Solution: Clear the microphone area. Reduce ambient noise. Enable features in settings. Restart.

Escalate if: Voice functions do not respond after clearing obstructions and restarting.

Robot makes grinding or unusual noises

What you see: Audible grinding, clicking, or squeaking during movement.

Likely causes: Debris in wheels. Worn wheels. Loose components.

What to check: 1. Power off the robot. 2. Inspect drive wheels and auxiliary wheels for debris, hair, or foreign objects. 3. Clean the wheels with a cloth. 4. Spin wheels by hand to check for resistance or abnormal sounds.

Solution: Remove debris. Clean wheels. If wheels are damaged, contact HUTECH for replacement.

Escalate if: Noise persists after cleaning.

Page 10: Frequently Asked Questions

Charging and Battery

How long does it take to fully charge the HolaBot? Approximately 4.5 hours from empty to full. Ensure the charger fastener clicks into place before leaving the robot to charge.

How long does the HolaBot battery last? Between 10 and 24 hours depending on speed settings, tray loads, delivery frequency, and environmental conditions.

What is the battery capacity? 25.6 Ah -- larger than some other models in the range. Operating voltage is DC 23-29.4 V.

When should I charge the HolaBot? When battery drops to 20%. Running at low battery damages the battery over time. Schedule charging during off-peak hours.

Can I use a non-original charger? No. Only the original charger should be used. Non-original chargers can damage the robot or cause safety hazards.

Can HolaBot be charged with the key switch in the OFF position? Yes. Simply connect the charger and ensure the fastener clicks into place.

Operation

How do I turn on the HolaBot? Turn the key switch to ON, ensure the battery back cover is pushed back, then press and hold the power switch for 1 second. The light strips and dot matrix screen flash.

How do I turn off the HolaBot? Press and hold the power switch for 3 seconds, then tap Power Off on screen.

How do I pause the robot? Two ways: tap the LCD screen once, or press the lightning button. Tap or press again to resume.

What is the lightning button? A physical button on the robot for quick pause and resume without touching the touchscreen.

What modes does HolaBot support? Four modes: Delivery, Collection, Cruise, and Direct. Plus calling and notification functions across all modes.

What is the minimum passage width? 70 cm -- narrower than some other models in the range, making HolaBot suitable for tighter spaces.

What calling methods does HolaBot support? Five methods: 4G watch, PuduLink app, Pager, NFC, and Beeper calling. Availability depends on accessories and network configuration.

What mapping methods does HolaBot support? Three methods: Marker mapping (ceiling markers), Laser mapping (LiDAR), and Marker + Laser fusion mapping (both combined).

What is Steady Mode? A reduced-speed mode for stable delivery of delicate items. Enable it in Speed Settings.

How many locations can Collection Mode handle? Up to 20 locations per collection task.

Does HolaBot synchronise maps automatically? No. Maps must be manually synchronised in Map Settings after changes are made.

Where are the Advanced Settings? Tap a blank area of the screen repeatedly. Enter the administrator password when prompted.

Does HolaBot support automatic gate crossing? Yes. Compatible with Bluetooth or sensor-based gate systems. Configured during installation.

Safety

How does the emergency stop work? Press the red emergency stop switch to halt immediately. Rotate clockwise to release, then tap screen or press lightning button to resume.

How much weight can each tray hold? Up to 15 kg per tray on flat surfaces. 10 kg per tray when crossing obstacles of 5 mm height.

What is the IP rating? Robot body is IP20 (no water protection). Tray compartment is IPX5 (protected against water jets), making it suitable for handling tray spills.

Maintenance

How do I clean the trays? Power off the robot. Wipe tray surfaces with a clean cloth weekly. For oil stains on silicone pads, scrub with water and dry thoroughly.

How do I clean the sensors? Power off the robot. Clean vision sensor, depth sensors, and LiDAR weekly with a cloth or lens cleanser. Clean immediately if contaminated during service.

Can I maintain the robot while it is on? No. Always power off before any cleaning or maintenance.

General

What surfaces can HolaBot operate on? Indoor flat and smooth ground only. It can cross obstacles up to 7 mm and climb inclines up to 5 degrees. Avoid wet, sticky, or uneven surfaces.

What is the gesture sensor used for? Contactless interaction. Wave a hand near the infrared sensor to dismiss the robot or confirm delivery receipt. Useful when hands are full.

What temperature range can HolaBot operate in? 0 to 40 degrees Celsius. Storage: -40 to 65 degrees Celsius. Humidity must be 85% RH or less.

What do the expressions on the dot matrix screen mean? Eyes open = moving. Blinking = arrived at destination. Sleepy/droopy eyes = low battery. These cannot be changed or disabled.

Are the trays adjustable? Yes. The four trays can be repositioned to different heights to accommodate various item sizes.

How do I contact HUTECH support? Email techservice@pudutech.com for technical support, warranty claims, or spare parts.

Page 11: Service and Escalation

When to Contact Support

Before You Call

Gather the following information before contacting support:

Support Contact