Why doesn't the Line-following Sensor work?

Please: 1. Make sure the distance between Line-following sensor and line-following map is between 1-2cm, this is the best working range. 2. Do not use Line-following mode under strong light. Strong light will interfere the function of Line-following Sensor. 3. Make sure to use unreflecting material to make your own line-following map.

Why cannot the software read the value of sensor?

Please check your wiring, make sure sensors are connected to the same port with your program in the WeeeCode software.

Can I get a customization robot for my project? OEM or ODM?

We offer customization services to our customer. Please contact us for more detail inquiry.

4 in 1 Jeep Classroom Stem Educational Coding DIY Programmable Esp32 Robot Kit for School

Name: 4 in 1 Jeep Classroom Stem Educational Coding DIY Programmable Esp32 Robot Kit for School
Brand: Weeemake Steam Tech Co., Ltd.
SKU: 2205463855

Guangdong, ChinaWeeemake Steam Tech Co., Ltd.

US$145.00

2-49 sets

US$129.00

50+ sets

Sample price:US$170.00/set.Request sample

Product profile

Customization

Available

Toy Department

Unisex

Material

Metal

Model NO.

161001

Age Range

All Ages

Single Item

Single Package Selling Units 26X24X15 Cm Size

Feature

DIY Robot Car

Warranty

1 Year

Service

ODM Acceptable

Keywords

Stem Robot Learning Toys

Lead Time

3-7 Days

Model

Arduino

Transport Package

Boxes

Specification

415 x 305 x 155 mm

Trademark

weeemake

Origin

China

HS Code

90230090

Production Capacity

10000pieces/Years

Key features

KU 161001; version is listed as ESP32, with aluminum alloy chassis, programmable robot toy use, playing and teaching functions, MOQ 1 set, and 1-year warranty.

Official Product Details: 4-in-1 design, 30 types, 80 parts, 9-step assembly, age 8+, and a plastic storage case.

Official Forms: Three-wheel Robot Car, Four-wheel Robot Car, Distance Measure Robot, and Smart Lamp.

Official Learning Materials: A 16-chapter Teacher's Manual with 36 lessons is listed. Confirm whether the selected SKU includes it free before publishing an absolute free-in-box claim.

Mainboard And Software: ELF mainboard can be replaced with ATmega328P or ESP32; for this version, use ESP32 as the primary claim. Software includes WeeeCode based on Scratch 3.0 and Open Sourc

Confirmed Modules: RGB ultrasonic sensor, double way line following sensor, 7*21 LED matrix panel, two TT motors, light sensor, sound sensor, IR receiver, IR remote controller, Bluetooth 4.1 module

WeeeMake App Modes: Manual control, line following, obstacle avoidance, music, voice control, and coding.

Mainboard Parameters: Official material lists 6 - 12V input, four RJ11 ports, two DC motor ports, Bluetooth 2.4G, and USB Type B. Confirm version-specific fields against theSKU.

Evidence Boundary: SKU fields take priority over conflicting official-page fields. Do not treat alternate mainboards, generic official parameters, or textbook availability as included in every

Commercial Details: page lists 49*34*21 cm packaging, 2.8 kg gross weight, 1-7 day lead time for 1-10 sets, and small-batch/drawing customization support.

Company profile

Patents AwardedR&D CapabilitiesFull CustomizationHigh Repeat Buyers Choice

Weeemake Steam Tech Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2016-02-01Nearest Port: Yantian PortAverage Response Time: ≤4.62h

AI-Powered supplier vetting

SummaryWeeemake Steam Tech Co., Ltd. is a Shenzhen-based Chinese factory established in 2018, focused on STEM education robot kits, AI maker-space kits, and interactive AI solutions. The supplier reports five production lines, annual capacities of 10,000 AI Interactive Demonstration Solutions and 8,000 STEM Robot Kits, and off-peak lead times within 15 working days. It exports domestically and to Europe, with exports representing 41%–50% of sales and self-operated import/export rights. SGS conducted an audit with a report validity period from May 28, 2025 to May 27, 2026, but the recorded audit result is not interpretable from the provided value. The company states that it provides OEM/ODM and multilingual customization, supported by 11 years of R&D engineer experience and 6–10 quality-control staff. No management-system certification is listed, while after-sales, financial credibility, customer cases, and several operational controls remain insufficiently evidenced.

Supplier typeThe supplier is identified as a factory and a limited company located in Nanshan District, Shenzhen, Guangdong, China. Its registered business information and company descriptions support classification as a manufacturing-oriented supplier rather than only a trading entity.

R&D capabilityThe company describes itself as an R&D-focused high-tech enterprise working in STEAM education, artificial intelligence, and interactive technology, with a complete product-development process and 11 years of R&D engineer experience. However, specific new-product, SDK, or other innovation capability fields remain unknown, so the evidence supports an innovation orientation but not a complete capability assessment.

Production capacityThe supplier reports five production lines, annual capacity of 10,000 AI Interactive Demonstration Solutions and 8,000 STEM Robot Kits, and a stated off-peak lead time within 15 working days. Its described process covers development, design, procurement, SMT mounting, welding, testing, packaging, and delivery, providing explicit evidence of established production capability.

Customization capabilityThe supplier explicitly states that it provides OEM/ODM services and supports multi-language content customization. Although the dedicated ODM and OEM capability fields are marked unknown, the company description directly supports the availability of customization services.

Product Q&A

Q:When I turn on the robot, my robot has no response, why?

1. Low voltage, please recharge all your batteries or replace with new batteries. 2. Batteries installed in wrong polarity (+/-). 3. Incorrect wiring on battery holder or motor.

Q:When I controlled the robot to move forward, it moved backwards. How can I fix this?

The wiring of the motor is connected reversed. Please reconnect.

Q:How to program my robot or restore the factory setting of my robot?

Please download WeeeCode software on our website, connect robot to PC via USB cable, select serial port 'COM x' and main-board type in software to start coding your robot. 'Restore Firmware' menu offers different options: 'Online Firmware' support you make live testing of your program, robot will response immediately; 'Factory Firmware' will resume the factory program and settings for your robot; 'Mobile Firmware' supports robot control and program on WeeeMake APP.

Q:I cannot connect robot to computer via USB cable nor wireless way, how can I fix it?

Your computer hasn't installed the driver of the mainboard. Please install driver in WeeeCode software 'Help' menu, restart the robot, and connect to computer again.

Q:Why cannot the robot move with USB power supply?

USB power supply can only support chip and sensors in mainboard. To drive motors or servos, please connect batteries and switch on the power button.