should this kit have come with male connectors or are those ordered separately?

The sensor shield board that sits on top of the UNO board has pins, so the female connections on the connection wires work fine. My kit came with a strip of male-male connectors also, but I did not use them.

what batteries are needed?

You need to use 3.7V 18650 batteries.

Is the r3 board is a arduino uno board? the board in the picture does not have any description on it.

Yes,It is with arduino uno board.

How many batteries are needed? And what is the final voltage coming out of the battery box?

I think this came with a 2-cell battery pack which fit the 3.7V 18500 Li-ion cells (7.4V total). At first I switched it out for a 6 cell AA holder, but later got some 18500 cells and charger and really liked using them. This is a nice project kit. Enjoy.

Smart Robot Car 2WD Chassis Kit with Ultrasonic Module R3 Board,Remote Compatible with Arduino IDE DIY Kit

Product ID: 376657470

Details

Age range (description)
Kid
Brand
LAFVIN
Item dimensions L x W x H
28 x 18 x 5
Size
18 cm x 28 cm
Theme
Robot

📡HC-SR04 ultrasonic sensor for precise obstacle detection

🤖2WD chassis for agile mobility

🛠️R3 Board compatible with Arduino IDE

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Description

🚀 Build the future of robotics—one smart move at a time!

REMOTE CONTROL READY - IR remote compatibility lets you command your robot from a distance
ARDUINO IDE INTEGRATION - Seamlessly program and customize with open-source Arduino environment
EFFORTLESS DIY ROBOTICS - Simple assembly with clear tutorials—perfect for hands-on STEM mastery
SMART OBSTACLE AVOIDANCE - Ultrasonic sensor empowers real-time navigation and collision prevention
COMPREHENSIVE LEARNING KIT - Includes motor driver, line tracking, and servo modules for full robotics experience

The LAFVIN Smart Robot Car 2WD Chassis Kit is a complete Arduino-compatible robotics DIY kit featuring an R3 board, ultrasonic sensor for obstacle avoidance, and remote control functionality. Designed for STEM education, it includes detailed tutorials and multiple modules to provide a hands-on learning experience in robotics programming and hardware assembly.

Specifications

ASIN	B07YCHCQNK
Age Range Description	Kid
Battery Description	Battery
Best Sellers Rank	#255,189 in Toys ( See Top 100 in Toys ) #3,268 in Educational Science Kits
Brand Name	LAFVIN
Customer Reviews	4.2 4.2 out of 5 stars (212)
Educational Objective	STEM
Is Assembly Required	Yes
Item Dimensions	28 x 18 x 5 centimeters
Item Weight	0.56 Kilograms
Manufacturer	LAFVIN
Manufacturer Part Number	LA-018
Material Type	Acrylic
Model Number	LA-018
Size	18 cm x 28 cm x 5 cm
Theme	Robot
UPC	763231735898

Reviews

S**K

زي الزفت

31.12.2025

R**1

Good fit the most part but some of the instructions are hard to follow. Good fit a project but helps if you have done something like this before.

22.12.2020

V**I

Trop facile a monter

4.05.2024

Y**A

Llegó en la fecha esperada, piezas pequeñas, producto completo, bien embalado

8.03.2025

Y**A

Ideal para proyecto de seguidor de línea

11.03.2026

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฿3987

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In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

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