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open-visual-stimulator

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An arbitrary-spectrum spatial visual stimulator for vision research

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## Open Visual Stimulator

This repository holds the resources for a flexible, spatial visual stimulator with up to 6 chromatic channels. It combines commercial digital light processing (DLP) devices with open hard- and software components that can be easily adapted to the experimentalist’s specific needs. With this we intend to start a community effort of sharing and further developing a common stimulator design.

Please find more details on the stimulator in the following publication:

_Franke K*, Maia Chagas A*, Zhao Z, Zimmermann MJY, Bartel P, Qiu Y, Szatko K, Baden T, Euler T# (2019). An arbitrary-spectrum spatial visual stimulator for vision research. eLife 2019;8:e48779, [10.7554/eLife.48779](https://elifesciences.org/articles/48779)._

For the newest changes and additions, see [release notes](https://github.com/eulerlab/open-visual-stimulator/blob/master/release_notes.md)

### Pictures

![](https://github.com/eulerlab/open-visual-stimulator/blob/master/pics/Zebrafish_Cinema.png)
_Rendering of the 4-channel R-G-B-UV zebrafish stimulator (by MJY Zimmermann)._

![](https://github.com/eulerlab/open-visual-stimulator/blob/master/pics/Mouse_TTC.png)
_Rendering of through-the-conderser (TTC) G-UV mouse light stimulator (by MJY Zimmermann)._

![](https://github.com/eulerlab/open-visual-stimulator/blob/master/pics/Mouse_TTO.png)
_Rendering of through-the-objective (TTO) G-UV mouse light stimulator (by MJY Zimmermann)._

### Ordering of PCB boards

If you are interested in ordering boards and components, please find more information in the boards folder [readme](https://github.com/eulerlab/open-visual-stimulator/blob/master/boards/readme.md) file.

## Repository structure

```
├───pics                                      Pictures
├───boards                                    LED driver/blanking boards
│   ├───lcr_add-on                            - KiCad files for board that combines LCr and
|   |   |                                       blanking signals
|   |   ├───connector_coaxial.pretty          - BNC connector description (KiCad)
|   |   └───gerber                            - Gerber files for circuit board
│   ├───mosfet_circuit                        - KiCad files for board that switches switch LEDs
|   |   ├───connector_coaxial.pretty          - BNC connector description (KiCad)
|   |   └───gerber                            - Gerber files for circuit board
|   ├───mosfet_circuit_plus_voltage_regulator - KiCad files for board that combines voltage
|   |   |                                       regulator and LED switching
|   |   ├───connector_coaxial.pretty          - BNC connector description (KiCad)
|   |   └───gerbers                           - Gerber files for circuit board
|   ├───ssr_board                             - KiCad files for solid state relay board
|   |   └───gerbers                           - Gerber files for circuit board
|   └───arduino_code_for_testing_circuits     - Arduino code to emulate blanking and LCr signals
|       └───lcr_emulator
|
├───printed_parts                             OpenSCAD and STL files for 3D printed parts
|   |
│   ├───Fish_cinema                           - Fish tank used in the fish setup
│   ├───SSR_board                             - Designs for plate and cover of the SSR board
│   └───optical_components                    - optomechanical parts for LED assemblies
|           ├───fish_stimulator
|           ├───cmouse_stimulator
|           └───lcr_addons
├───calibration_mouse                         Calibration of dichroic mouse stimulator
│   ├───data                                  - recorded calibration data (custom LEDs and TFT monitor)
│   ├───datasheets                            - spectrometer data sheet, etc.
│   ├───filters                               - dichroic filter spectra
│   ├───light-sources                         - spectra of LEDs
│   ├───opsins                                - mouse opsin sensitivity curves
│   ├───scripts                               - Python scripts used in iPython notebooks
|   └───spectrometer-calibration-files        - USB2+ calibration data
|
└───calibration_zebrafish                     Calibration of tetrachromatic zebrafish stimulator
    ├───data                                  - recorded calibration data (custom LEDs)
    ├───datasheets                            - spectrometer & powermeter data sheet.
    ├───light-sources                         - LED spectra measured behind the teflon screen
    ├───opsins                                - zebrafish opsin sensitivity curves
    └───scripts                               - Python scripts used in iPython notebooks
```

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