---
product_id: 617827231
title: "Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible with Most Building Blocks STEM Toy Learning"
brand: "circuit cubes"
price: "€ 259.42"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.hr/products/617827231-bluetooth-upgrade-kit-electronic-toy-building-set-compatible-with-most
store_origin: HR
region: Croatia
---

# Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible with Most Building Blocks STEM Toy Learning

**Brand:** circuit cubes
**Price:** € 259.42
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible with Most Building Blocks STEM Toy Learning by circuit cubes
- **How much does it cost?** € 259.42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/617827231-bluetooth-upgrade-kit-electronic-toy-building-set-compatible-with-most)

## Best For

- circuit cubes enthusiasts

## Why This Product

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

## Description

Bring your toys to life with Circuit Cubes, the electronic building blocks that add power, motion, and light to your creations. Designed by STEM teachers, Circuit Cubes can turn a light on, power a motor, or make wheels spin — plus, they work with your building bricks. Circuit Cubes are a fun way to educate kids in the basic STEM areas. They help students engage in inspired discovery and creativity. In the process, kids develop problem-solving skills and critical thinking which leads to success and increased self-confidence.

Review: 100% worth the cost. Great accessory for LEGO MOC builders and LEGO fans. - I purchased a set of Circuit Cubes Bluetooth Upgrade+ Kit to test it out, and to see if it would be a useful non-LEGO motorization accessory for my smaller LEGO builds. I was very impressed with it and have bought a second set. For non-LEGO fans; this kit is definitely worth buying for anyone especially children or teens who are into robotics and building fun and motorized stuff. For LEGO fans; this kit is a 100% a recommended buy. I am a LEGO fan and do from time to time build MOCs. I have always wanted a small, compact, and well build LEGO compatible rechargeable power system and small motors to help me motorize my small builds. This is that system. 1- The size of the Bluetooth/Rechargeable Battery Cube is great for incorporating it into any small LEGO builds that the LEGO's own Power Functions or Powered Up battery boxes would be to big to use. It uses a micro USB for charging from computer or a 5v charger, and has very good battery life. (It measures at 4 in 4 studs wide and a height of 2 bricks stacked up). 2 - The two small yet well powered Motors Cubes are equally great for incorporating them into small LEGO MOCs. The can been controlled by the app to be rotated clockwise or counters-clockwise. (They measure 2 in 4 studs wide and also a height of 2 bricks stacked up). 3- The build and plastic quality of the electronics and the assembly works are fantastic. The included wires are good quality and flex well. The included few LEGO-type technic pieces are good enough to help build a small tank like robot from the kit's own instruction booklet. 4- The Bluetooth set up is very very easy and even a child could easily do it. 5- The App (I tested mine on Apple IOS, but Android also supports it) was very easy to deal with, and offered different ways to operate the motors. There are customization options, and even has an option for coding (I have not tested this feature). I have used the Bluetooth/Battery Cube and one Motor Cube from the kit to modify and motorize a few official LEGO Speed Champions set, and I have to say I am very impressed with result. they were compact enough that with a few modification they fit into the 8 studs wide Speed Champions set without any issue. I also used both Motor Cubes to motorize a LEGO City Construction Bulldozer and I was even more impressed with it since with two motors I could easily maneuvered the bulldozer.
Review: Great improvement for LEGO MOCs - I really like this product. As a LEGO collector, one the issues I had is that motors, batteries and controls are huge. This power block and motor are very small but also extremely powerful, so I can hide them inside the builds and the work really well.

## Features

- REMOTE CONTROL: Add Bluetooth app control to any build with the Circuit Cubes Bluetooth Upgrade Kit! Combine this launch kit contents with your imagination and existing construction bricks to create your own vehicle, mech monster, and other animated creations!
- ENDLESS FUN: Our electronic building blocks provide hours of fun and creativity! Build and power endless projects with Circuit Cubes, a pile of bricks and your limitless imagination.
- KIT COMPONENTS: This kit comes with a Bluetooth Battery Cube, two Cubit Motors, and a total of 36 parts (bricks, wheels, gears, axels, connection wires).
- EDUCATIONAL: Created by STEM teachers, test and approved by kids. Young scientists, engineers, and inventors will love exploring and creating with Circuit Cubes
- AGE: Safety test and approved for ages 8+

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08KRHKXB9 |
| Additional Features | Battery Operated |
| Age Range Description | Baby |
| Battery Types | Rechargeable Bluetooth Battery |
| Brand | Circuit Cubes |
| Colour | Multicolor |
| Customer Package Type | FFP |
| Customer Reviews | 4.7 out of 5 stars 102 Reviews |
| Educational Objective | Creative Thinking, STEM, Team Building Skills |
| Is Assembly Required | Yes |
| Manufacturer | Tenka Inc. |
| Manufacturer Part Number | 855142007369 |
| Manufacturer recommended age | 8 years and up |
| Material | Plastic |
| Model Name | Bluetooth Upgrade Kit |
| Model Number | 855142007369 |
| Model Year | 2021 |
| Number Of Pieces | 36 |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Operation Mode | automatic |
| Power Source | battery |
| Set Name | Bluetooth Upgrade Kit |
| Size | Large |
| Target Audience | Children aged 8 and above, with possible adult supervision |
| Theme | Vehicle,Educational |
| Toy Building Block Type | Interlocking Toy Building Block |
| UPC | 855142007369 |
| Unit Count | 36 Count |

## Images

![Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible with Most Building Blocks STEM Toy Learning - Image 1](https://m.media-amazon.com/images/I/81NMJ7FzgcL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 100% worth the cost. Great accessory for LEGO MOC builders and LEGO fans.
*by V***I on 27 February 2021*

I purchased a set of Circuit Cubes Bluetooth Upgrade+ Kit to test it out, and to see if it would be a useful non-LEGO motorization accessory for my smaller LEGO builds. I was very impressed with it and have bought a second set. For non-LEGO fans; this kit is definitely worth buying for anyone especially children or teens who are into robotics and building fun and motorized stuff. For LEGO fans; this kit is a 100% a recommended buy. I am a LEGO fan and do from time to time build MOCs. I have always wanted a small, compact, and well build LEGO compatible rechargeable power system and small motors to help me motorize my small builds. This is that system. 1- The size of the Bluetooth/Rechargeable Battery Cube is great for incorporating it into any small LEGO builds that the LEGO's own Power Functions or Powered Up battery boxes would be to big to use. It uses a micro USB for charging from computer or a 5v charger, and has very good battery life. (It measures at 4 in 4 studs wide and a height of 2 bricks stacked up). 2 - The two small yet well powered Motors Cubes are equally great for incorporating them into small LEGO MOCs. The can been controlled by the app to be rotated clockwise or counters-clockwise. (They measure 2 in 4 studs wide and also a height of 2 bricks stacked up). 3- The build and plastic quality of the electronics and the assembly works are fantastic. The included wires are good quality and flex well. The included few LEGO-type technic pieces are good enough to help build a small tank like robot from the kit's own instruction booklet. 4- The Bluetooth set up is very very easy and even a child could easily do it. 5- The App (I tested mine on Apple IOS, but Android also supports it) was very easy to deal with, and offered different ways to operate the motors. There are customization options, and even has an option for coding (I have not tested this feature). I have used the Bluetooth/Battery Cube and one Motor Cube from the kit to modify and motorize a few official LEGO Speed Champions set, and I have to say I am very impressed with result. they were compact enough that with a few modification they fit into the 8 studs wide Speed Champions set without any issue. I also used both Motor Cubes to motorize a LEGO City Construction Bulldozer and I was even more impressed with it since with two motors I could easily maneuvered the bulldozer.

### ⭐⭐⭐⭐⭐ Great improvement for LEGO MOCs
*by G***O on 19 August 2021*

I really like this product. As a LEGO collector, one the issues I had is that motors, batteries and controls are huge. This power block and motor are very small but also extremely powerful, so I can hide them inside the builds and the work really well.

### ⭐⭐⭐⭐⭐ Great little way to motorize builds
*by 8***3 on 10 June 2023*

These little motors are the perfect scale for motorizing cars that come in lego sets and its fun to drive them around. Just be cautious though because the wires from the plug in to the motor disconnected by themselves for both motors. It was a simple fix with a saudering iron though. Overall really fun and easy to use! Definitely recommend!

## Frequently Bought Together

- Circuit Cubes Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible with Most Building Blocks STEM Toy Learning
- Circuit Cubes Space Rovers Kit – Remote Control Robotics Kit - STEM Learning Toy for Kids Age 8 and Up
- Circuit Cubes Mechs Move! Multi-Creature Mobility Launch Kit - Engineering STEM Kit for Children and Adults

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-10-15*