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Introduction:
This document describes the IndiGo modular spectrometer and provides you with instructions for its
correct operation. Please do not hesitate to contact us through contact@goyalab.fr if you have any
questions about this manual.
The IndiGo consists of a modular spectrometer connected by Bluetooth to a smartphone working in
the visible range. Optional modules are available on demand and allow the user to add either a light
source, an optical fiber adapter or a chemical analyzer to the main spectrometer unit. The IndiGo is
designed to be easy to use, compact and portable.
The IndiGo is ideal to record visible spectra directly in the field.
Operation:
Package content
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The IndiGo core module
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USB-C power cord 1m long
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Protective case
Carefully inspect the devices and make sure there is no damage. In the event of a damage, do not use
the device and please contact us at contact@goyalab.fr
Institut d'optique d'Aquitaine, rue François Mitterrand - 33400 Talence – France
IndiGo
Handheld modular spectrometer
GoyaLab SAS - contact@goyalab.fr -
Version June 20
www.goyalab.com
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Table of Contents
Summary of Contents for GoyaLab IndiGo
- Page 1 Optional modules are available on demand and allow the user to add either a light source, an optical fiber adapter or a chemical analyzer to the main spectrometer unit. The IndiGo is designed to be easy to use, compact and portable.
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Page 2: Material Description
IndiGo’s USB-C connector (2). Once the power charge LED (4) is green, the IndiGo is ready to be used. Note: if the IndiGo is off, all the LEDs will be off even if the IndiGo is in charge mode. To turn on the LED during the charge mode battery, please turn on the switch (1). -
Page 3: Measure Menu
First step Connexion to the smartphone 1 - Once your IndiGo is fully charged, start the GoyaLab app and select IndiGo. 2 – Turn on both the Bluetooth and the GPS on the smartphone to allow the detection of the IndiGo. Wait a few seconds until your IndiGo appears on the screen. -
Page 4: Subtract Background
The spectrum of the light measured by the IndiGo is displayed live on this screen. Note: When the IndiGo is sending data to the smartphone, the data transmission LED (5) flashes orange and green successively. The flashing speed depends on the acquisition time. The longer the acquisition time, the slower the flashes. - Page 5 With smooth function function Autoscale “Autoscale” scales the spectrum on the vertical axis so that it fills the whole window. GoyaLab SAS - contact@goyalab.fr - www.goyalab.com Institut d’optique d’Aquitaine, rue François Mitterrand - 33400 Talence – France Version June 20...
- Page 6 The cursor can be moved either by using the arrow buttons (by increments of 1nm) or directly by taping on the screen. GoyaLab SAS - contact@goyalab.fr - www.goyalab.com Institut d’optique d’Aquitaine, rue François Mitterrand - 33400 Talence – France...
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Page 7: Analyze Menu
“Analyze”: Allows the user to display and analyze saved graphs. Note: All he functionalities of this menu are detailed in Section 5.2 “Tutorial”: Starts the pairing between the IndiGo and the app and helps you getting started “Settings”: gives the possibility to the user to change the acquisition or display parameters. - Page 8 (by default). To change the graph, select the small arrow to display other spectra and select the one you want. The cursor will now display the coordinates of that spectrum. GoyaLab SAS - contact@goyalab.fr - www.goyalab.com Institut d’optique d’Aquitaine, rue François Mitterrand - 33400 Talence – France...
- Page 9 Note 1: only one spectrum at a time can be displayed as a background Note 2: it is advisable to cut off the ‘rainbow’ display mode to clearly see both spectra (see Section 5.2.c). GoyaLab SAS - contact@goyalab.fr - www.goyalab.com Institut d’optique d’Aquitaine, rue François Mitterrand - 33400 Talence – France...
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Page 10: Settings Menu
The acquisition time must be given in ms and can go from 1ms up to 2000ms. The user has to click on the following symbol to save the acquisition time. GoyaLab SAS - contact@goyalab.fr - www.goyalab.com Institut d’optique d’Aquitaine, rue François Mitterrand - 33400 Talence – France... - Page 11 The wallpaper of the MEASURE menu can be displayed either in black or white. The black background is recommended in low light measurements where the smartphone screen light could interfere with the light under study. GoyaLab SAS - contact@goyalab.fr - www.goyalab.com Institut d’optique d’Aquitaine, rue François Mitterrand - 33400 Talence – France...
- Page 12 Note: The D coefficient takes care of both the shape and the intensity of the curves whereas the I coefficient only takes care of the shape of the curves. f. Absolute/relative By default, the IndiGo is in the absolute mode which means that the intensity displayed is the quantity of photons recorded on each pixel of the sensor.
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Page 13: Precaution For Use
Change of Device The app can be used with all the product offered by GoyaLab. You can switch from one device to another by pressing name of the device. Using the IndiGo with the UV MODULES Precaution for use As a standard mode, the UV module is equipped with UV A and/or UV B LED that can be dangerous to eyes and skin when directly exposed to this type of radiation. - Page 14 375nm. Use the UV module Switch on the IndiGo and follow the guidelines described in Section 3 to connect the device to the smartphone and start spectra acquisition. Once on the measurement page, stop the live mode by taping on the “live” button.
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