Modular Robotics Cubelets price & specs

$225 – $399

Out of stockVia SSH / web / bridgeMagnetic blocksSense/Think/ActBlocklyKids 4+

Possibly ≤ 1 weekShipping: When in stock.

Remote control: A laptop or tablet pairs with the Bluetooth Hat through the Cubelets apps to reprogram block behaviors in Blockly or C. There is no general Python API.

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Overview

Magnetic robot blocks where each cube is a sensor, logic or actuator and robots are programmed simply by how the blocks are stacked. Widely used in K-12 classrooms and museums to teach systems thinking before code. Still sold in 2026 with new clip-on Hats, but the core sets are frequently out of stock.

Type: Modular robot · Consumer & education kits
Maker: Modular Robotics (USA)
Released: 2012
Price: $225 – $399
Status: Out of stock
Best for: Ages 6+
Programming: No SDK, app / visual programming only

Price and shipping

Discovery Set $225, Curiosity Set $399 (modrobotics.com, 2026, both shown out of stock). Launch pre-order in 2012 was $160 for a six-cube kit.

Shipping: When in stock. Sold directly by Modular Robotics and resellers. Core sets go in and out of stock. Modular Robotics ↗

Specifications

Category	Modular & reconfigurable · Consumer & education kits
Released	2012
Country	USA
Availability	Out of stock
Sales	100,000 Cubelets kits shipped by February 2019 Modular Robotics ↗
Programmability	No SDK, app / visual programming only
Built-in autonomy	Reactive · Responds to its surroundings without a map, such as avoiding obstacles or following a person
LLM support	None · Blocks are reprogrammed in Blockly or C through apps, no general API or LLM.
Best for	Ages 6+ (estimated)
Vision sensors	No vision sensors
Actuators	DC / gear motors
Audio	No audio
Compute type	Arduino / ESP32 / microcontroller
Remote control	Via SSH / web / bridge
Size	Small cubes that snap together magnetically (dimensions not published)
Locomotion	Any shape: drive, rotate and flash Cubelets combine into vehicles and gadgets
Compute	Microcontroller in every cube, behavior emerges from data passed between blocks
Camera	None (brightness and distance sensing blocks only)
Sensors	Brightness, distance, knob and other Sense blocks, add-on Hats (brightness, distance, mood ring)
Runtime	Rechargeable battery Cubelet (runtime not published)
Speed	Not published
SDK	Free Cubelets apps via the Bluetooth Hat: Blockly or C to rewrite a block's behavior, plus a data logger

Common questions

How much does Cubelets cost?

Cubelets is listed at $225 – $399. Discovery Set $225, Curiosity Set $399 (modrobotics.com, 2026, both shown out of stock). Launch pre-order in 2012 was $160 for a six-cube kit.