Software engineering, 3-D printing, instrumentation design and documentation
Convert 3-D printers into laboratory automation equipment
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Scheduling software appliance $375
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The LabBot scheduler system works with RepRap 3D printing common firmware (ie., Smoothieware, Marlin, ReprapFirmware) which is based on industry-standard computer numeric control (CNC) programming language called Gcode. This makes it possible to configure the scheduler with many types of low-cost RepRap open-source motion controllers which are widely available (ie., Smoothieboard, Duet, Azteeg X5 mini, MKS MBASE, RAMPS). The source code is available on github:
LabBot 3-D printer
The modular coreXY LabBot 3-D printer is set up to do fused filament fabrication. In the XY dimension it is around 35% larger then typical personal 3-D printers but it is designed to be adapted to extend the functionality (like from a FFF 3-D printer to a pipetter).
The LabAutoBox controller includes the 8 channel syringe pump, 8 servo driven 4-way valves, pipette wash station, 3 peristaltic pumps, pressure compensation vessel, wash/waste bottles, enclosure, control electronics and LabBot robotic scheduling software that runs on a Raspberry Pi computer. This tool is designed to convert CNC systems (like 3-D printers) into liquid handlers not just the LabBot. Note: this is a standard line item that comes with the LabBot pipetter system.
LabBot 3-D pipetter
This is the LabBot configuration for functioning as a 8 pipette tip liquid handler designed for laboratory automation applications. While this system can be converted into a 3-D printer, the bed is fixed rather then moving up and down.
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SD card running scheduling software
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The LabAutoBox software has 3 different modes of operation
– manually control devices, denoted by green
– adjust the object (plates, wash stations, etc) physical parameters and macros, denoted blue
Camera control – select and control different Internet-of-Things cameras, denoted by red
3-D circuit/pick and place printer
The interactive mode is where you can manually control the various different lab automation functions. This user interface is always present on the left side of the LabAutoBox system software when the software establishes a connection with the robotic system. The connection is established via the serial interface using a python MQTT subscriber script.
The image shows what the interface looks like. To demonstrate features showing color coded are the different functions.
Starting scheduler (green) that establish device connections and providing access to Interactive mode
XYZ positioning (blue)
Wash/waste pumps and positioning to wash/waste/dry stations (orange)
Multichannel syringe positioning (purple)
PCV liquid level setting and pump (orange)
Heat block monitoring (grey)
In order to make it possible to develop laboratory automation workflows described is a tool for building and editing programs. There are 3 different design modes that are selectable: Objects, Build Macro, Edit/Run Macro
Designing laboratory automation programs involve defining and adjusting object physical parameters that are positioned on the robotic deck. The physical parameters define the XYZ positioning of the 3D printer/liquid handler/CNC robotic system. Building macros can involve both compiling individual commands or integrating other macro lists. The software allows you to test that the macros are working properly and to make adjustments when needed and there is a logger display interface that allows you to monitor the progress of the application. If a problem is observed you can abruptly stop the run.
The LabBot Robotic Schedular tool allows you to define objects that serve as reference points or XYZ positioning. At the top of the tool is a list of already defined objects (denoted by blue) and at the bottom (denoted by red) is where you can adjust the physical properties. Upon saving the target settings (“Save Target Settings”), the location of the object is shown on the graphical display of the robotic deck.
Normally you can give an object an arbitrary name, with the exception of the “wash station” and the “drypad”. These two objects involve special macros (relating to wash and dry macros).
Upon saving the object properties, the new data is stored as a temporary session variable (that lasts as long as the browser stays open indefinitely). For long-term storage into a file, then you need to select the “Save objects” button which will save the data into a JSON file. There is a tool available for selecting, downloading, and uploading JSON object files that is accessible by clicking the “Manage object files” button.
The software contains a filemanager that stores object profiles. This makes it possible to store templates. This tool makes its possible to save, select, upload and delete files.
The robotic deck display is designed to work with different-sized robotic systems like small 3D printers or larger liquid handling workstations. At the top of the deck display, there is a tool for adjusting the width and height. The location of the objects is relative to the zero position being at the bottom left corner of the instrument this is where the instrument should be homed to.
This tool is used to craft macros segments. Here referencing the color codes are the different types of macros that can be developed:
Custom macro list (green) – Select saved custom macros to make other macros
Tip washing macro (blue) – Wash or just dry pipette tips
Position to object (red)
Position 4-way valves (orange)
Multichannel syringe pump (blue)
Wash, waste and pressure compensation pump (gray)
Camera takes photos (green)
Thermal block control (red)
Macro assembler (orange) – This is the place where the macros are inserted
After selecting a macro segment and entering the data, the macro can be inserted into the macro assembler. Using the macro assembler tool, macros can be selected and saved or deleted. If saved you can see the full LabAutoBox macro syntax in the Edit/Run view.
The ‘Build Macro’ tool is useful for crafting macros but they need to be tested and this is done in this view. Since there can be some syntax to some of these macros. The macros listed in the ‘Macro assembler’ box at the bottom of the ‘Build Macro’ view are abbreviated and so the full syntax is shown in this ‘Edit/Run Macro’