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LilScan - First 3D Profiler Kit with submillimeter accuracy for everyone.

Get access to optical measurement tools known from industry for your DIY projekt!

What makes LilScan magical?

LilScan is a 3D Laser Profiler Kit for Raspberry Pi attachable to RepRap 3D printers and tripods. Designed for Makers, Creators, and Students.

Printable Product

LilScan uses a new co-manufacturing approach that allows high-tech products at a significantly reduced price. Critical parts, such as electronic components, lasers, and screws, are part of the 3D Laser Kit, ensuring a flawless end product. The rest of the product is 3D printed by the user.

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Powererd by Raspberry Pi 4B

The core of LilScan is a Raspberry Pi 4B and a NoIR Camera V2. Based on its quad-core CPU and fast raw camera access, it is now possible to build low-cost optical systems taking advantage of state-of-the-art machine vision algorithms initially designed for much more expensive hardware.

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3D Profiles with Sub-Millimeter Accuracy

Measuring 3D profiles with high accuracy can be challenging with mechanical tools. LilScan can help to bring your ideas faster to life with more accuracy and repeatability whenever before.

Unlock a new axis for 3D Scans

Interested in scanning complete objects with sub-millimeter accuracy? LilScan is compatible with many ReRap 3D printers using their print bed as conveyor belts to move objects relative to the sensor system with ultra high-precision.

Sub-Millimeter Accuracy for everyone

What you can do with a 3D Laser Profiler.

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Capture 3D Contours of Walls

Measure complex 3D wall contours to build custom furnishers and end plates which fit perfectly.

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Size Objects

Want to size objects which are difficult to measure with standard calipers? Lilscan gets you covered.

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Scan 3D Surfaces

Combine LilScan with a RepRap 3D printer to transform surfaces into millions of 3D point measurements.

Technical Specs

[object Object] Avtive 3D Triangulation

LilScan is a structured light system projecting a known light pattern onto the scene. Based on the perspective distortion of the pattern, it derives the scene depth.

[object Object] Accuracy 0.2mm@150mm

The laser line in combination with the standard camera lens results in an accuracy of up to 0.2mm in the z-dimension at a distance of 150mm to the line laser.

[object Object] 3D Point Spacing 0.1mm@150mm

The 3D point spacing along the laser line or for a completed 3D scan when combined with a RepRap 3D printer is up to 0.1mm at a distance of 150mm to the line laser.

[object Object] Scan Speed

For single 3D measurements, LilScan records the laser and a background image @1Hz. In scan mode, 3D profiles are recorded @30Hz ~ 50k points/sec.

[object Object] Eye Safe Laser

LilScan uses a 5mW 650nm Class 2M line laser with a 45° line optic, which is considered eye-safe due to the blink refects of a human eye.

[object Object] Output Format

LilScan stores all 3D data in the PLY format supported by many free programs such as CloudCompare or Meshlab.

[object Object] Power Consumption

The system's power consumption is between 3.0 Watt in idle and 7 Watt under load and can be powered via a USB-C port.

[object Object] Dimensions and Weight

The bounding box of the system is 39mm x 96mm x 91mm (H x L x W) and has a total weight of 0.3kg.

[object Object] Interfaces

LilScan supports GigE, WIFI, and USB OTG as hardware interface, ships with a built-in web client, and is fully scriptable via gRPC.


In the early 2000s, only major companies and research universities had access to 3D printing technologies. The machines were massive, expensive, and mainly used to rapidly prototype parts and products.

Nowadays, the cost of 3D printers has dropped low enough to be accessible to small companies and individuals. People can easily download, customize, and print products at home, and they often end up costing less than buying them.

However, the same evaluation never happened for 3D sensing technologies, used by major assembly lines for automatization, quality control, or by engineers for reverse engineering. Without having the ability to easily measure the 3D world with sub-millimeter accuracy, it is difficult and time-consuming to manufacture any custom parts that fit perfectly.

Taking advantage of years of experience in research and industry-grade structured light systems, LilScan was born as a private project to measure custom parts placed on a 3D printer bed and as playgorund to test hardware and develope new algorithms.

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