---
title: Pipette Tool
---

(pipette-tool)=
# Pipette Tool

```{figure} _static/pipette-flexure.jpg
:scale: 50 %

Back of the pipette tool showing the flexure mechanism. When the pipette experiences resistance (i.e., pressing it against a pipette tip to pick it up), the flexure mechanism compresses until an endstop is triggered.
```

```{figure} _static/pickup.gif
:scale: 40 %

Pipette tool picking up a tip. When the flexure mechanism shown above reaches the endstop, the pipette tool considers the tip to have been picked up and resumes other tasks.
```

## Parts to Buy

- OT-2 Pipette (tested with gen1 and gen2)
- See the shopping list for tool parts [here](https://docs.google.com/spreadsheets/d/1Bp4ZdpHsX01EHIsc5mqbzi92CpQlax4KNS-QtPmUZUM/edit#gid=1582949094).

## Parts to Fabricate

- Pipette tool frame SolidWorks file and correctly sized parking posts can be found [here](https://github.com/machineagency/science-jubilee/tree/main/tool_library/OT2_pipette).

## Assembly Instructions

There are two version to choose from.

- [Version using only 3D printed parts](https://github.com/machineagency/science-jubilee/blob/main/tool_library/OT2_pipette/assembly_docs/OT2_Pipette_3D_only_assembly_instructions.pdf)
  - [*Purchase this endstop](https://www.digikey.ca/en/products/detail/e-switch/SS0750301F020P1A/2639077)
- [Version using 3D printed parts and a laser-cut flexible delrin part](https://github.com/machineagency/science-jubilee/blob/main/tool_library/OT2_pipette/assembly_docs/OT_laser_cut_assembly_instructions.pdf)

## Electronics

- [Wiring Diagram](https://github.com/machineagency/science-jubilee/blob/main/tool_library/OT2_pipette/assembly_docs/OT2_Wiring_Diagram.pdf)

## Duet Configuration

- Instructions [here](https://github.com/machineagency/science-jubilee/blob/main/tool_library/OT2_pipette/duet_configs/OT2_Pipette_Configuration.md)

## Media

<iframe width="708.75" height="398.25" src="https://www.youtube.com/embed/meaXhH14zzY?si=4p9Iwl6hgjO9En3n" title="Assembling the 3D printed only version of the OT2 pipette" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

<iframe width="354.375" height="630"
src="https://www.youtube.com/embed/pMmDV9pAfZU"
title="Assembling tool post"
frameborder="0"
allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
allowfullscreen></iframe>

<iframe width="354.375" height="630"
src="https://www.youtube.com/embed/0mGqOwAkS5k"
title="Arbor press"
frameborder="0"
allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
allowfullscreen></iframe>

<iframe width="354.375" height="630"
src="https://www.youtube.com/embed/F8c2MbFglJU"
title="First tool loaded"
frameborder="0"
allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
allowfullscreen></iframe>