FAQ & SUPPORT

FAQ

Find answers about UWB positioning, intelligent following, development interfaces and project delivery by product line and topic.

99 questions found

Products and applications

Can a following kit be used to build a mobile livestreaming cart?

Automatic Following Kits

Answer

Yes. Modify the upper tray of a vehicle, or integrate a following kit into a purpose-built livestreaming chassis.

Technology and positioning

Can I build my own wheels and chassis for a following kit?

Automatic Following Kits

Answer

Yes. The following kit supports integration into your own chassis. Contact the team to discuss the drive configuration.

Technology and positioning

Does a motor/drive package include the following firmware?

Automatic Following Kits

Answer

A drive-only package does not include the following program. It must be used with a following kit.

Products and applications

How can a quadruped robot integrate following?

Automatic Following Kits

Answer

A ROS2 driver is provided for the supported following kit.

Products and applications

Can the following kit be used with a quadruped or embodied robot?

Automatic Following Kits

Answer

Yes. It can be integrated into quadruped and embodied-robot platforms.

Products and applications

Can a following kit be integrated into a wheelchair?

Automatic Following Kits

Answer

Theoretically, integration is possible if space is available for the electronics. A wheelchair application requires its own vehicle-level engineering and acceptance.

Purchasing and support

Can I purchase only a following kit if I already have a chassis?

Automatic Following Kits

Answer

Yes. Purchase the components listed in the applicable BOM. Component purchase costs less than a complete vehicle but requires assembly and integration. See the relevant component-list spreadsheet for the BOM cost.

Installation and deployment

How should the front and rear following anchors be installed?

Automatic Following Kits

Answer

Face the indicator side outward and the cable interface inward. Mount A0 at the center of the front and A1 at the center of the rear. The recommended mounting height is approximately 0.5m above the ground.

Development and interfaces

Can an existing tracked or electric vehicle gain following capability?

Automatic Following Kits

Answer

Yes. Haoru supports electrification and following conversions, hub-motor vehicles, heavy platforms and following-module integration. Discuss the specific platform with technical support.

Specifications and performance

Which module provides angle measurement?

Automatic Following Kits, Following Vehicles

Answer

Applicable PDoA modules support angle measurement; the referenced front-anchor AOA0 range is −60° to +60°.

Development and interfaces

Do both front and rear following anchors measure angles?

Automatic Following Kits, Following Vehicles

Answer

The front anchor provides DIS0 ranging, AOA0 angle measurement and serial communication. The rear anchor provides DIS1 ranging and, in the described configuration, AOA1 angle data, forwarding it wirelessly to the front anchor. It therefore needs power but not a separate host serial connection. Check the specific kit's protocol and firmware.

Technology and positioning

Do the following products provide autonomous navigation?

Automatic Following Kits, Following Vehicles

Answer

The standard following products do not currently provide that navigation capability. Contact the team for integration options.

Development and interfaces

Is the following-vehicle code open source?

Automatic Following Kits, Following Vehicles

Answer

The following vehicle's controller code is available as open-source development material for supported kits. The PDoA module's internal firmware is excluded.

Specifications and performance

What positioning accuracy is stated for the following system?

Automatic Following Kits, Following Vehicles

Answer

The source gives ±5cm (CEP95) for measurements in a 42m × 21m test environment. Confirm the metric and tested configuration.

Specifications and performance

What motor powers are used?

Automatic Following Kits, Following Vehicles

Answer

The referenced motor ratings are 250W at 24V and 350W at 48V.

Development and interfaces

How do the controller and motor drive communicate?

Automatic Following Kits, Following Vehicles

Answer

The system uses UART-TTL interfaces where specified, while wheel-control outputs are PWM. CH2 controls the left-wheel drive and CH3 the right-wheel drive, connected to the corresponding motor-controller inputs. Check the wiring diagram for the specific controller.

Operation and features

Does the vehicle reverse when the wristband or remote approaches?

Automatic Following Kits, Following Vehicles

Answer

In the described default configuration it does not reverse or move on approach. Other firmware offers an optional reversing-on-approach setting, so confirm the active configuration.

Operation and features

Must I choose between a following remote and a wristband?

Automatic Following Kits, Following Vehicles

Answer

Options include an integrated remote containing the following tag, or a standard remote combined with a following wristband. In wristband following mode, the vehicle follows the wristband.

Technology and positioning

What does the laser option mean?

Automatic Following Kits, Following Vehicles

Answer

It refers to LiDAR used for obstacle sensing and bypassing obstacles in the applicable configuration.

Technology and positioning

Do the vehicle tires need inflation?

Automatic Following Kits, Following Vehicles

Answer

Tire construction depends on the two-wheel or four-wheel configuration. Contact the team for the exact tire type.

Technology and positioning

How can LiDAR returns from the vehicle's own body be handled?

Automatic Following Kits, Following Vehicles

Answer

Mask the angular sectors occupied by the vehicle body so those returns are not processed as external obstacles.

Technology and positioning

Can LiDAR be purchased separately?

Automatic Following Kits, Following Vehicles

Answer

The referenced answer permits a LiDAR purchase for customers buying a complete Haoru following vehicle. Confirm current supply conditions.

Technology and positioning

Is there an ultrasonic-only obstacle-sensing option?

Automatic Following Kits, Following Vehicles

Answer

Yes. Ultrasonic sensing provides stop-on-obstacle behavior and has detection blind spots; it does not provide the referenced LiDAR obstacle-bypass function. Choose the appropriate LiDAR configuration for bypassing.

Technology and positioning

How many obstacle sensors are used?

Automatic Following Kits, Following Vehicles

Answer

The described configuration uses one LiDAR and four ultrasonic sensors. LiDAR is the main sensor for bypassing; ultrasound assists near-range stopping.

Operation and features

What is remote recall?

Automatic Following Kits, Following Vehicles

Answer

At a suitable distance, press the following button to enter following mode. The vehicle locates the tag and approaches it. The referenced recall distance is approximately 15m.

Specifications and performance

What following distance can be configured?

Automatic Following Kits, Following Vehicles

Answer

The referenced following-distance range is 0.5–15m, with a minimum setting of 0.5m.

Technology and positioning

Which motor configuration is suggested for a 200kg payload?

Automatic Following Kits, Following Vehicles

Answer

A supported 48V 350W motor configuration can be selected. Assess the complete vehicle drive and payload requirements.

Technology and positioning

Can the following vehicle travel between specified points?

Automatic Following Kits, Following Vehicles

Answer

The standard product follows a person and does not provide autonomous point-to-point travel.

Technology and positioning

Does the product follow using image recognition?

Automatic Following Kits, Following Vehicles

Answer

No. The following target is tracked by UWB rather than image recognition.

Technology and positioning

When does a two-anchor turn-around action end?

Automatic Following Kits, Following Vehicles

Answer

For the referenced logic: DIS0 < DIS1 and −10° ≤ AOA0 ≤ +10°.

Technology and positioning

How does front following determine its steering direction?

Automatic Following Kits, Following Vehicles

Answer

For the referenced logic, drive straight when −10° ≤ AOA0 ≤ +10°; turn left when AOA0 < −10°; turn right when AOA0 > +10°.

Development and interfaces

What is the two-anchor following architecture?

Automatic Following Kits, Following Vehicles

Answer

A front anchor measures DIS0 and AOA0 and provides serial communication; a rear anchor measures DIS1; the followed person carries the tag.

Operation and features

What obstacle modes are available?

Automatic Following Kits, Following Vehicles

Answer

Obstacle bypass, stop and wait, and obstacle sensing disabled, according to the supported configuration.

Operation and features

What happens when the person is in front or behind the vehicle?

Automatic Following Kits, Following Vehicles

Answer

The vehicle follows when the person is in front. When the person is behind, it turns around in place before following.

Operation and features

How is the remote powered on and its mode selected?

Automatic Following Kits, Following Vehicles

Answer

Hold the power control for three seconds. Press the mode button once to switch modes: white indicates remote-control mode and red following mode in the referenced device.

Installation and deployment

How are the ultrasonic sensors wired?

Automatic Following Kits, Following Vehicles

Answer

Connect them to the controller slots in left, front-left, front-right and right order. Suitable extension cables may be used.

Installation and deployment

How are the PDoA anchors connected?

Automatic Following Kits, Following Vehicles

Answer

Use the specified 1.25mm-pitch 4P cables for the master/slave anchor connections. The rear-anchor cable can be extended as specified by the installation guide.

Installation and deployment

How are motors connected to the motor controller?

Automatic Following Kits, Following Vehicles

Answer

Connect the black 4P motor plugs to M1/M2. The referenced two-wheel setup has no front/rear motor pairing; the four-wheel setup connects the left and right motor groups as specified in the wiring diagram.

Installation and deployment

How are controller wheel outputs wired?

Automatic Following Kits, Following Vehicles

Answer

Connect CH2 for the left wheel and CH3 for the right through the specified 3P cables: black GND, red 5V and yellow PWM.

Installation and deployment

What are the drive-wheel installation steps?

Automatic Following Kits, Following Vehicles

Answer

Insert the motor shaft into the drive wheel, fit the square key, secure with the M8 bolt and inflate the tire.

Installation and deployment

How is a motor secured to the chassis?

Automatic Following Kits, Following Vehicles

Answer

Use four M6 × 40 screws for the referenced mounting.

Installation and deployment

How should the casters be installed?

Automatic Following Kits, Following Vehicles

Answer

Fit the bearing assembly onto the 30mm tube, tighten the bolt and adjust the ground clearance so all four wheels contact the ground.

Installation and deployment

Which direction should the anchors face?

Automatic Following Kits, Following Vehicles

Answer

Face the indicator side of both front and rear anchors outward.

Installation and deployment

Where should front and rear anchors be mounted?

Automatic Following Kits, Following Vehicles

Answer

Mount each at the center of its corresponding end, with the indicator side outward and cable port inward. The referenced guide gives approximately 0.5m above ground and a 15° installation angle. Confirm the orientation in the exact guide.

Troubleshooting and maintenance

What should I check if a wristband or remote will not charge?

Automatic Following Kits, Following Vehicles

Answer

Check charging contacts for dirt or oxidation and clean appropriately, such as with an alcohol wipe. Align the wristband's magnetic charging cable; the remote uses Type-C.

Troubleshooting and maintenance

Why does the vehicle not stop at an obstacle?

Automatic Following Kits, Following Vehicles

Answer

Check whether Stop on Obstacle or Obstacle Bypass is selected in the mini program. With obstacle sensing disabled, the vehicle does not react to obstacles. Confirm the mode before operation.

Product selection

How do ultrasound and LiDAR differ?

Automatic Following Kits, Following Vehicles

Answer

Ultrasound is lower cost but less effective for small or oblique objects, so the referenced system uses it for stopping. LiDAR covers a wider angle and supports the applicable obstacle-bypass behavior.

Operation and features

How are wristband and remote modes switched?

Automatic Following Kits, Following Vehicles

Answer

Press the wristband power button once to switch following/stopping. On the remote, press mode button 3 once to switch remote-control/following; red and white indicate the respective modes.

Operation and features

How can reversing on approach be enabled?

Automatic Following Kits, Following Vehicles

Answer

Enable it in Vehicle Control in the WeChat mini program. It is disabled by default. When enabled, the vehicle reverses to maintain the set separation. The referenced vehicle lacks rear obstacle sensors, so reversing can cause a collision; assess the application before enabling it.

Technology and positioning

Will the vehicle turn around if the person is behind it?

Automatic Following Kits, Following Vehicles

Answer

Yes. The two-anchor system identifies a rear-side target, turns in place and then starts following.

Troubleshooting and maintenance

Why does the vehicle not move in following mode?

Automatic Following Kits, Following Vehicles

Answer

Check that startup passed with two beeps, the tag/remote battery is sufficient, the tag is not blocked by the body or metal, and nearby obstacles are not triggering stop-on-obstacle behavior.

Operation and features

How are the following tags charged, and how long do they last?

Automatic Following Kits, Following Vehicles

Answer

The wristband and remote contain lithium batteries charged over USB. The wristband uses a magnetic cable and the remote Type-C. Runtime ranges from days to weeks depending on use and settings.

Development and interfaces

What radio range does UWB following support?

Automatic Following Kits, Following Vehicles

Answer

The referenced PDoA anchor and compatible tag, such as ULM3-SH, communicate over approximately 40m. Body and metal obstructions can significantly affect accuracy and link stability.

Operation and features

What is the remote-control range?

Automatic Following Kits, Following Vehicles

Answer

The referenced maximum is approximately 30m. Operate with good visibility and avoid blockage by large metal objects.

Company and partnerships

What vehicle travel range and runtime are stated?

Automatic Following Kits, Following Vehicles

Answer

With the referenced 24V20Ah or 48V18Ah battery configuration, full-load operation is approximately 15km or eight hours under factory working conditions. Load, surface and speed affect runtime.

Purchasing and support

Can I buy a complete vehicle or just the following kit?

Automatic Following Kits, Following Vehicles

Answer

A complete vehicle includes the chassis and systems. A kit includes the controller, anchors, tag and motor drive without the chassis, for converting an existing platform. Core boards are generally supplied with the kit rather than individually.

Product selection

How do single-anchor and omnidirectional two-anchor following differ?

Automatic Following Kits, Following Vehicles

Answer

A single front anchor starts and follows within an approximately 120° forward sector. Rapid direction changes or rear/side positions can lose the target or produce unsuitable motion. The two-anchor configuration supports 360° target-side selection, turning in place when the person is behind before starting to follow.

Products and applications

Can I use 48V components on a 24V vehicle?

Automatic Following Kits, Following Vehicles

Answer

Do not mix incompatible voltage-rated batteries, motors and drives; incorrect combinations can damage equipment. Some low-voltage control components, including anchors, tags and controller boards, can be shared where the supported supply and interface arrangements match. Check the complete wiring and voltage ratings before integration.

Company and partnerships

Which following code is open source?

Automatic Following Kits, Following Vehicles

Answer

The following vehicle's controller code is open source for the supported kit. Internal PDoA anchor firmware is proprietary and is not supplied as open source.

Technology and positioning

How does the kit achieve 360° following?

Automatic Following Kits, Following Vehicles

Answer

It uses front and rear PDoA anchors. A range comparison determines when the target is behind; the controller then turns the vehicle in place before following.

Technology and positioning

How does an automatic following vehicle work?

Automatic Following Kits, Following Vehicles

Answer

UWB tracks a tag worn by the target person. The vehicle controller uses the target's relative position and motion, together with vehicle sensors, to calculate drive commands. The following algorithm controls the differential-drive wheels for smooth tracking. The available behavior depends on the controller and sensor configuration.

Technology and positioning

Can the vehicle automatically return home or drive to a specified location?

Automatic Following Kits, Following Vehicles

Answer

The standard following vehicle does not provide AGV-style point-to-point path planning, map navigation or automatic dispatch. Autonomous travel to a fixed coordinate requires a separate solution.

Technology and positioning

Is obstacle avoidance available?

Automatic Following Kits, Following Vehicles

Answer

Applicable LiDAR-equipped vehicles provide obstacle-bypass functions, and obstacle-sensor packages are available. The original answer also describes ultrasound-based bypass, which conflicts with other answers limiting ultrasound to stopping. Confirm the exact hardware and firmware. LiDAR supply conditions depend on the complete vehicle configuration.

Product selection

How should I select a following product?

Automatic Following Kits, Following Vehicles

Answer

Select according to the application, chassis, load and operating environment. Contact the team for configuration advice.

Technology and positioning

What does a red indicator mean?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

On the referenced tag, a steady red indicator means low battery. Flashing red indicates a ranging request without an anchor response.

Company and partnerships

Where is Haoru Technology located?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Dalian, Liaoning Province, China.

Purchasing and support

Is express shipping available?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

The referenced domestic shipping service is SF Standard Express. Battery-containing wristbands require ground shipping and are not eligible for the faster air-express service. Ask the team about shipping to your destination.

Company and partnerships

Is this a Nooploop IPS product?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

No. Haoru's products are developed by Haoru Technology.

Purchasing and support

Can payment be made by bank transfer?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Yes. Contact the team for the company's bank-account details and payment arrangements.

Specifications and performance

What RF safety information is available for a wristband worn near the body?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Haoru states that product transmit power meets the applicable national safety requirements. Request the relevant product test and compliance documentation for your intended deployment and market.

Operation and features

How can I tell when the wristband is fully charged?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

A steady green indicator means fully charged on the referenced wristband.

Purchasing and support

How soon are orders dispatched?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

The referenced domestic dispatch target is normally within 48 hours, with orders placed before 17:00 dispatched the same day where possible. Confirm availability and destination-specific delivery arrangements.

Company and partnerships

Where is the factory located?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Dalian, Liaoning Province, China.

Products and applications

What battery runtime do the products provide?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Referenced figures vary by configuration: LD150/LD600 anchors approximately eight hours and tags twelve hours; ULM1-SH/ULM3-SH wristbands approximately ten days at eight operating hours per day and 10Hz; ULM1-GP badges approximately thirty days under the same conditions; ULM1 power-bank configurations four hours for an anchor and six hours for a tag; and a complete vehicle with a 24V20Ah battery carrying 100KG approximately eight hours or 15km. These figures differ from other answers; confirm the current product and operating settings.

Technology and positioning

Can customers evaluate the products?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

The referenced domestic purchase policy offers a seven-day return period for eligible orders. Confirm the terms for evaluation and international orders with the team.

Company and partnerships

What is Haoru's high-tech enterprise certification?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Certificate number GR202531200595, issued November 18, 2025, valid for three years.

Purchasing and support

Can replacement accessories be supplied?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Replacement batteries or damaged accessories can be arranged after verification of the delivery details. Component cost and shipping are normally paid by the customer.

Purchasing and support

How are product materials obtained?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

After purchase, an unpacking-material download link is provided, including assembly and test instructions.

Purchasing and support

Is OEM customization available?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Yes. Tiered quotations are available, including quantities of 10–50 sets and 51–500 sets.

Purchasing and support

What warranty is provided?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

The stated hardware warranty is twelve months. Manufacturing-related failures within the warranty period can be repaired or replaced without charge under the applicable warranty terms.

Technology and positioning

How are factory settings restored?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Use the supported mini-program function or the model-specific button sequence in the manual.

Development and interfaces

Can firmware be upgraded?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Yes. Supported controller firmware can be programmed using STLINK after setting up the required development environment.

Development and interfaces

What development support is available?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Development documents, supported SDK/API resources including Python, and the PC positioning application are provided for the applicable product.

Development and interfaces

Can the normal module firmware output raw CIR?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Normal ranging/positioning firmware outputs processed ranges or angles rather than raw channel impulse response data. CIR acquisition requires the compatible dedicated firmware described in the CIR development materials.

Operation and features

How is the wristband powered on and switched between following and stop?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Hold the button for three seconds. A flashing blue light indicates following mode; press once to switch to stop, indicated by flashing green on the referenced device.

Company and partnerships

Are discounts available?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Samples use the quoted fixed prices. The company focuses its resources on development and customer technical support and states a thirty-day price-protection policy for eligible purchases. Volume pricing is available above fifty modules. Contact the team for current terms and quotations.

Company and partnerships

Can a lost battery or damaged accessory be replaced?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Yes. Supply the recipient's name, phone and address for verification. Replacement cost and shipping are normally paid by the customer.

Technology and positioning

How long is technical support available?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

The referenced policy includes one month of product-related technical consultation. A paid extension is listed at RMB 149 for three months. Support beyond the company's products, including third-party integration questions, is not guaranteed. Confirm the current international support arrangement.

Purchasing and support

Where is the development package downloaded?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

An unpacking download link is supplied after purchase. Assemble and test the system, confirm that it meets your requirements and acknowledge receipt; support then supplies the full technical materials.

Purchasing and support

Is OEM customization eligible for volume discounts?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Yes. The quotation schedule includes volume tiers such as 10–50 sets and 51–500 sets. Larger quantities reduce unit cost. Discuss custom requirements and commercial terms with the team.

Purchasing and support

How long is the hardware warranty?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Twelve months under the stated warranty terms, with free repair or replacement for covered non-user-caused failures.

Company and partnerships

Does Haoru support volume purchasing and OEM customization?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Yes. Pricing varies with volume, including 10–50 and 51–500-set tiers. OEM options can cover configuration, appearance or functions. Request a quotation for the specific requirements.

Purchasing and support

Does modifying code affect the warranty?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Damage caused by user modifications to embedded firmware or hardware is excluded from free warranty coverage under the referenced warranty terms. Debug modifications on a development platform before vehicle installation.

Purchasing and support

How can I obtain software and technical materials?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

An unpacking download link is supplied first. After setup, testing and receipt confirmation, contact support for the full technical package.

Company and partnerships

Is custom development supported, and which files are open source?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Yes. Supported following-controller STM32 code and design files, including controller schematics, are available. The internal firmware of the PDoA anchor is proprietary and excluded.

Purchasing and support

How are faulty products returned or exchanged?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

For the referenced domestic policy, report a quality problem within seven days of receipt with the order number and description. After verification, a return or exchange can be arranged. Keep the original packaging; confirm the terms for your destination.

Purchasing and support

What is the product warranty period?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

Twelve months under the stated warranty terms, with free repair or replacement for covered non-user-caused failures.

Technology and positioning

Are PDoA module schematics supplied?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

PDoA module schematics are not currently supplied.

Purchasing and support

Do quoted prices include tax?

UWB Positioning, Automatic Following Kits, Following Vehicles

Answer

The referenced Chinese domestic prices include tax, and an electronic ordinary invoice can be issued. Ask the team about international quotations and invoice requirements.

FAQ | Haoru UWB