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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.

For the newest changes and additions, see release notes

Pictures

Rendering of the 4-channel R-G-B-UV zebrafish stimulator (by MJY Zimmermann).

Rendering of through-the-conderser (TTC) G-UV mouse light stimulator (by MJY Zimmermann).

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 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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