In this work we present an electronic open hardware project for building a low-cost portable contact spectrophotometer. The project is based on a low-cost, pre-cabled on-board spectral sensor designed for device embedding. It is an off-the-shelf “low cost” component based on the AS7265x Smart Spectral Sensor chip family which consists of three sensor devices: AS72651 with master capability, AS72652, and AS72653. This integrated sensor is capable of measures on 18 spectral channels, ranging from 410nm to 940nm. Each AS7265x component has two integrated LED drivers with programmable current and can be timed for electronic shutter applications. Features include UART or I2C slave digital interface, 16-bit ADC with digital access, and programmable LED drivers. The device prototype we have built has also a GPS and a DHT (temperature and humidity) sensor to collect data to factor from the environment when measuring spectral information. Here we describe its main characteristics and present some preliminary tests and calibration.

A low-cost portable spectrophotometer / A. Trentini, L. Bini, A. Rizzi - In: Proceedings of the 15th Congress of the International Colour Association 2023[s.l] : International Colour Association - Multidisciplinary Association in the field of Colour(AIC), 2023. - ISBN 978-0-6484724-5-2. - pp. 112-117 (( Intervento presentato al 15. convegno Congress of the International Colour Association tenutosi a Chiang Rai nel 2023.

A low-cost portable spectrophotometer

A. Trentini
Primo
;
A. Rizzi
Secondo
2023

Abstract

In this work we present an electronic open hardware project for building a low-cost portable contact spectrophotometer. The project is based on a low-cost, pre-cabled on-board spectral sensor designed for device embedding. It is an off-the-shelf “low cost” component based on the AS7265x Smart Spectral Sensor chip family which consists of three sensor devices: AS72651 with master capability, AS72652, and AS72653. This integrated sensor is capable of measures on 18 spectral channels, ranging from 410nm to 940nm. Each AS7265x component has two integrated LED drivers with programmable current and can be timed for electronic shutter applications. Features include UART or I2C slave digital interface, 16-bit ADC with digital access, and programmable LED drivers. The device prototype we have built has also a GPS and a DHT (temperature and humidity) sensor to collect data to factor from the environment when measuring spectral information. Here we describe its main characteristics and present some preliminary tests and calibration.
Color Measure; Color Measurement devices; Spectrophotometer
Settore INF/01 - Informatica
2023
https://aic-color.org/publications-proceedings
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1021709
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