---
product_id: 256899628
title: "MiOYOOW WHDTS Smart Car Soldering Project Kits Line Following Robot Kids DIY Electronics Education School Competition"
brand: "mioyoow"
price: "€ 35.76"
currency: EUR
in_stock: true
reviews_count: 5
category: "Mi Oyoow"
url: https://www.desertcart.fi/products/256899628-mioyoow-whdts-smart-car-soldering-project-kits-line-following-robot
store_origin: FI
region: Finland
---

# Red LED track illumination Precision mechanical assembly Hands-on soldering & electronics MiOYOOW WHDTS Smart Car Soldering Project Kits Line Following Robot Kids DIY Electronics Education School Competition

**Brand:** mioyoow
**Price:** € 35.76
**Availability:** ✅ In Stock

## Summary

> 🚗💡 Ignite your inner engineer with the smart car kit everyone’s racing to build!

## Quick Answers

- **What is this?** MiOYOOW WHDTS Smart Car Soldering Project Kits Line Following Robot Kids DIY Electronics Education School Competition by mioyoow
- **How much does it cost?** € 35.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/256899628-mioyoow-whdts-smart-car-soldering-project-kits-line-following-robot)

## Best For

- mioyoow enthusiasts

## Why This Product

- Trusted mioyoow brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **STEM-Ready DIY Kit:** Perfect for mastering sensors, motors & automation without coding
- • **Skill-Building Assembly:** Easy soldering & mechanical build designed for first-time STEM enthusiasts
- • **Endless Track Creativity:** Design your own race courses with simple electrical tape for hours of interactive fun
- • **Complete Educational Package:** Includes detailed instructions, schematic & downloadable guides for smooth setup
- • **Intuitive Line-Following Tech:** Smart light sensor + red LED combo tracks your custom black tape path

## Overview

The MiOYOOW WHDTS Smart Car Soldering Project Kit is an educational DIY robot designed for STEM learners. It features a line-following mechanism using light sensors and red LEDs to track black tape paths. The kit requires basic soldering and mechanical assembly, making it ideal for school science projects and competitions. No programming needed, it encourages hands-on learning in electronics, mechanics, and automation controls.

## Description

Download the material from drive.google.com/open?id=1kLlV2NlXQeXo56ItreQ1JlUParTRc-16 or just scan QR code on the 7th picture. 1>.Install circuit 1.1 Install metal film resistor,DIP-8P IC socket,Self-Locking switch,Potentiometer,S8550, Capacitor, Red LED on PCB according to mark on PCB 1.2 Install Mecanum wheel The support bolts of the caster are inserted into the hole, tighten the nuts screwed into the caster, and finally fit the caster and tighten. 1.3 Install photoresistor and white LED on PCB reverse 1.4 Install battery case 1.5 Testing Install 2pcs AA battery Press on switch.If 2pcs white LED ON,the installation is successful.If LED off,please check the welding. 2>.Install mechanical parts 2.1 Install the four gaskets on the circuit board 2.2 Insert a steel shaft from the center hole of the wheel and note that the direction is inserted from one side of the raised sleeve of the wheel. It is better to insert the steel shaft parallel to the smooth side of the wheel 2.3 Put a three-way sleeve into the steel shaft, close to the wheel, and then a gasket into the steel shaft, close to the three-way sleeve, installed in place, toggle three-way sleeve, should be flexible. 2.4 Place a gear into the steel shaft in the center of the steel shaft 2.5 Put a three-axis sleeve into the end of the steel shaft so that the car side of the wheel assembly to complete 2.6 Install Motor 3>. Testing 3.1 Power on.Check S8550 or 10ohm resistor if motor don't move 3.2 Install LM393

Review: Excelente para principios de robótica
Review: Thought I'd try this little smart car kit, I built one long ago, wasn't as nice as this one though. The kit seems small at first, everything is in a little anti-static bag perhaps 3in by 5in (8cm x 13cm?). Spread the components out and it takes up a fair bit of space. Uh, don't do that though... my cat thinks red LED's are fun to bat around. Let's see... 8 resistors, two transistors, two 10K potentiometers, 4 LED's (2 kinds of red), 2 LDR's, 2 electrolytic capacitors, 2 motors, gear sets and wheels, one battery holder (2 AA) and clicky power button. An LM393 dual op-amp, a nice blue PCB, some wire and a handful of screws. Oh, and a bolt with nut and acorn nut to work as a 'caster' wheel. Plenty to do! The kit comes with a sheet of instructions, one side has an oval track on it so you can play with your smart car right away, while the other side has instructions for assembly, a parts list and a good schematic. If you download the 'Smart Car Instruction' PDF file, it expands on the assembly instructions with good quality color photos, allowing you to visually verify you've got things in the right places, right orientation (electrolytic caps, transistors, LED's and op-amp!). Very helpful. Assembly is straightforward, start with the lowest components (the resistors, usually), and solder them to the PCB as directed, paying attention to the silkscreen for LED & eCap polarity and others as needed. I suppose it took me about an hour, I've been soldering for some years (we won't discuss how MANY years!), and it wasn't difficult at all. The possible problem areas might be the 2 pair of LED/LDR's, which are soldered on the BOTTOM of the PCB, where the solder pads are... so you're kinda soldering them in 'backwards', be sure to leave the leads long on those components so you can get your iron in under them. They need to be long anyways to shine on surface and detect reflected light (or not). The gear sets, axles, wheels and motors were fiddly to assemble, you may need three hands to keep the axle and its supports aligned while you tighten the screw on the other side of the PCB. You'll get it... but you may need to try a couple of times to get it all lined up, I did. Get one screw going good, suddenly the other axle support rotates away from its position. GRRRR! Sometimes blue-tak or masking tape can be very helpful! I have a grumble, I feel the battery holder should be installed LAST, as if you're not really careful centering it and keeping it away from other solder holes/pads, you'll have difficulty placing the four wires to power the two motors. The motor power wires must be inserted into small pads which are very close to the side of the battery holder. I'd really recommend leaving the holder until last, as you'll have more room to get your fingers, pliers, tweezers, chopsticks... whatever... in the area to connect the motor wires. Then solder the two leads for the battery holder, wrap the wires around the PCB, double-sided sticky tape the battery pack in place, and voila! Examining my car, I placed the battery holder a bit off-center (only a teensy bit!), crowding the M1/M2 motor wire contacts. just FYI. Now the really fun bit! Turning it on and tweaking the two potentiometers! This is where I'd like to have a blurb in the instructions describing the potentiometer functionality. Yes, you can figure it out by playing with them, the schematic is very helpful as you can determine that they are bias voltage level controls for the dual op-amp trigger levels. And they interact with each other a little bit, so that can frustrate a less experienced kit builder. Basically, they set the threshold for the two LDR's (Light Dependent Resistors). Depending on how much light is reflected back by the surface, the resistance of the LDR changes, changing the voltage presented to the inputs to the dual op-amp (LM393). If the voltages differ, the op-amp output either goes to Vcc or Gnd, depending in which voltage is higher (wikipedia has a good article on op-amps, check it out). If the output is low (Gnd), it turns on its appropriate transistor and energizes a motor. If the output is high (Vcc), it turns OFF the transistor (PNP) and the motor is de-energized, stopping it. You'll have to tinker with the potentiometer settings to get Mr Smart Car to behave, My experience thus far is to start both pots at dead center, and with the power on, tweak them every so very very slightly CCW (counter-clockwise). My car likes to go to the right preferentially, sometimes I can get it to go left... but generally he likes going around the track in a clockwise direction. Your experience will likely vary from mine. You'll swear it has a mind of it's own though. I took mine into work and set up a huge track using electrical tape on a large table. It ran for several hours with people picking it up and looking, then putting it down to zoom around again. We all had fun! I've enjoyed the kit and will likely order more to give to my friends and their kids, perhaps I can spark their interests in electronics. Or maybe a smart car racing club!

## Features

- Great School Science ProjectThe Smart Car kit is widely used in schools to help students learn basic mechanical and electronic skills including sensors, motors, and automation controls. It's a great Science Fair project.
- Easy AssemblyIn addition to teaching basic mechanical and electronic principles, the kit is easy to build and is so simple it's often used to teach basic soldering skills. It's a great first kit for any STEM student. No programming is required.
- OperationThe completed Smart Car is a line following robot. The car follows a "track" which can be constructed with black electrical tape (see photos). Create a track with electrical tape on a light-colored surface, and the Smart Car will follow it. A red LED illuminates the track. A light sensor lets the car "see" the track and controls the drive motors to make the car follow the black line.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0732Z1FZC |
| Assembly Required | Yes |
| Batteries | 2 AA batteries required. |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Best Sellers Rank | #96,610 in Toys ( See Top 100 in Toys ) #1,451 in Educational Science Kits |
| Customer Reviews | 4.2 4.2 out of 5 stars (634) |
| Date First Available | 3 July 2017 |
| Educational Objective(s) | STEM |
| Item model number | 10168 |
| Language | English |
| Material Type(s) | Paper |
| Number of Puzzle Pieces | 1 |
| Product Dimensions | 10.16 x 7.11 x 0.15 cm; 68.04 g |
| Remote Control Included? | No |
| tech_spec_battery_description_toys | 2 AA batteries |

## Product Details

- **Age range (description):** Kid
- **Brand:** MiOYOOW
- **Item dimensions L x W x H:** 10.2 x 7.1 x 0.2 centimeters
- **Size:** basic
- **Theme:** Robot

## Images

![MiOYOOW WHDTS Smart Car Soldering Project Kits Line Following Robot Kids DIY Electronics Education School Competition - Image 1](https://m.media-amazon.com/images/I/71WQjgrN8ML.jpg)

## Questions & Answers

**Q: Does this come with soldering iron?**
A: Does not come with soldering iron or solder.
You do not need a fancy iron for this kit, 
just an inexpensive basic iron and good quality solder is all you need.

**Q: What tools and materials do you need to build this that are not included? thanks.**
A: Thanks for your question. For better finish soldering the smart car kits, the basic tools and materials are soldering iron, solder wire, tweezers and scissors. If you have any needs, feel free to contact us:-D    Thank you and have a nice day.

**Q: Where can I get another white gear?  Soldering iron touched a gear and melted it.**
A: Might be able to find another one on amazon or through the seller. count the teeth it has and measure the diameter of both the axle and the gear and you can probably search for one on here or google. hobby stores that sell rc cars might be able to help you out as well. or you can have someone 3d print you one.

**Q: Does it matter how the white leds height compared to sensor height? Do they get set flat on the board or how high off the board?**
A: At first glance the bottom LEDs are white but in fact are red. They do sit flush with the bottom of the PCB and the height is controlled by the nut that holds the front off whatever surface you are running your car on.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***N on 4 October 2020*

Excelente para principios de robótica

### ⭐⭐⭐⭐⭐ Review
*by L***. on 30 July 2019*

Thought I'd try this little smart car kit, I built one long ago, wasn't as nice as this one though. The kit seems small at first, everything is in a little anti-static bag perhaps 3in by 5in (8cm x 13cm?). Spread the components out and it takes up a fair bit of space. Uh, don't do that though... my cat thinks red LED's are fun to bat around. Let's see... 8 resistors, two transistors, two 10K potentiometers, 4 LED's (2 kinds of red), 2 LDR's, 2 electrolytic capacitors, 2 motors, gear sets and wheels, one battery holder (2 AA) and clicky power button. An LM393 dual op-amp, a nice blue PCB, some wire and a handful of screws. Oh, and a bolt with nut and acorn nut to work as a 'caster' wheel. Plenty to do! The kit comes with a sheet of instructions, one side has an oval track on it so you can play with your smart car right away, while the other side has instructions for assembly, a parts list and a good schematic. If you download the 'Smart Car Instruction' PDF file, it expands on the assembly instructions with good quality color photos, allowing you to visually verify you've got things in the right places, right orientation (electrolytic caps, transistors, LED's and op-amp!). Very helpful. Assembly is straightforward, start with the lowest components (the resistors, usually), and solder them to the PCB as directed, paying attention to the silkscreen for LED & eCap polarity and others as needed. I suppose it took me about an hour, I've been soldering for some years (we won't discuss how MANY years!), and it wasn't difficult at all. The possible problem areas might be the 2 pair of LED/LDR's, which are soldered on the BOTTOM of the PCB, where the solder pads are... so you're kinda soldering them in 'backwards', be sure to leave the leads long on those components so you can get your iron in under them. They need to be long anyways to shine on surface and detect reflected light (or not). The gear sets, axles, wheels and motors were fiddly to assemble, you may need three hands to keep the axle and its supports aligned while you tighten the screw on the other side of the PCB. You'll get it... but you may need to try a couple of times to get it all lined up, I did. Get one screw going good, suddenly the other axle support rotates away from its position. GRRRR! Sometimes blue-tak or masking tape can be very helpful! I have a grumble, I feel the battery holder should be installed LAST, as if you're not really careful centering it and keeping it away from other solder holes/pads, you'll have difficulty placing the four wires to power the two motors. The motor power wires must be inserted into small pads which are very close to the side of the battery holder. I'd really recommend leaving the holder until last, as you'll have more room to get your fingers, pliers, tweezers, chopsticks... whatever... in the area to connect the motor wires. Then solder the two leads for the battery holder, wrap the wires around the PCB, double-sided sticky tape the battery pack in place, and voila! Examining my car, I placed the battery holder a bit off-center (only a teensy bit!), crowding the M1/M2 motor wire contacts. just FYI. Now the really fun bit! Turning it on and tweaking the two potentiometers! This is where I'd like to have a blurb in the instructions describing the potentiometer functionality. Yes, you can figure it out by playing with them, the schematic is very helpful as you can determine that they are bias voltage level controls for the dual op-amp trigger levels. And they interact with each other a little bit, so that can frustrate a less experienced kit builder. Basically, they set the threshold for the two LDR's (Light Dependent Resistors). Depending on how much light is reflected back by the surface, the resistance of the LDR changes, changing the voltage presented to the inputs to the dual op-amp (LM393). If the voltages differ, the op-amp output either goes to Vcc or Gnd, depending in which voltage is higher (wikipedia has a good article on op-amps, check it out). If the output is low (Gnd), it turns on its appropriate transistor and energizes a motor. If the output is high (Vcc), it turns OFF the transistor (PNP) and the motor is de-energized, stopping it. You'll have to tinker with the potentiometer settings to get Mr Smart Car to behave, My experience thus far is to start both pots at dead center, and with the power on, tweak them every so very very slightly CCW (counter-clockwise). My car likes to go to the right preferentially, sometimes I can get it to go left... but generally he likes going around the track in a clockwise direction. Your experience will likely vary from mine. You'll swear it has a mind of it's own though. I took mine into work and set up a huge track using electrical tape on a large table. It ran for several hours with people picking it up and looking, then putting it down to zoom around again. We all had fun! I've enjoyed the kit and will likely order more to give to my friends and their kids, perhaps I can spark their interests in electronics. Or maybe a smart car racing club!

### ⭐⭐⭐⭐⭐ Review
*by A***R on 5 March 2021*

Good

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-22*