Pi Shield V1

The Pi Shield offers a wide range of options:

  • direct control of the 3d scanner via a browser-based graphical user interface (locally or even remotely)

  • compatible with the raspberry pi cameras (v1.3, v2.1, HQ)

  • compatible with smartphones and external cameras (via external shutter release)

  • compatible with many DSLR cameras via USB

  • easily adjustable to control other scanner builds

  • optional cloud functionality (analyse photos, cloud processing with one click - coming soon)

  • regular updates 

  • currently up to two stepper motors via A4988 drivers

Getting Started

Please see the User Manual as this is the place where to find a lot of information about the set-up, soldering, wiring and the user interface

Download the most recent Raspbian image here:

In case you want to use a breadboard or own PCB see the wiring schematics:

For a detailed instruction on how to set-up the raspberry pi from scratch:

User Interface

- Easy to use, as the camera settings can be changed directly via the browser

- Preview of the camera image

- Direct download of the created images via the browser for further processing in your photogrammetry software

- Adaptability of the interface through easy access to the backend (Node-Red)

 

Recommended hardware

 

Raspberry Pi

The Raspbian image has been tested on the following devices:

- Raspberry Pi 4, 3B +, 3A +, 3B, 2B (no wifi)

The following versions DO NOT work:

- Raspberry Pi B +, A +, Zero

Pi camera

It is recommended to use the Raspberry Pi Camera v2.1 (8mpx) as it offers the maximum resolution as well as a adjustable focus. The software also supports the Raspberry Pi Camera v1.3 (5mpx).

It is also possible to use the high quality Pi Camera (12mpx). It might be necessary to double the GPU memory of the raspberry pi ("sudo raspi-config --> advanced --> change GPU memory)

Ringlight

The optional ringlight creates shadowless illumination and thus creating optimal lighting conditions.

External camera

Any external cameras can be used with an existing, modified remote shutter release. The shutter release can be connected to the front of the control unit and is triggered via an optocoupler.

3D Scanner

The software can be easily adapted with just a few clicks to various 2-axis scanner setups. The default settings are optimized for the following setup: OpenScan but it can be easily adjusted to work with different builds like the OpenScan Mini

 

Power Supply

A 12V/2A DC Power Supply

SD Card/Cable/Stepper motors

See user manual

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