Open Colorimeter Product Line Overview

There are several versions of the Open Colorimeter available. The main differences between them are the light sensor used and it's positioning with respect to the LED light source. The LED light source is also highly customizable. We have a wide-selection of LED wavelengths in the UV, visible and IR spectrum. All of the Open Colorimeter variants use the PyBadge with CircuitPython firmware. Each version of the Open Colorimeter has it's own associated firmware. All versions use the same 3D printed enclosure. The Open Colorimeter Plus (in development) uses a different cuvette holder design for mounting two light sensors. An overview of each device highlighting differences and applications is below.

Open Colorimeter

• Product Page: https://iorodeo.com/products/open-colorimeter
• Light Sensor: TSL2591 High Dynamic Range Digital Light Sensor
• Sensor Overview: Highly sensitive, broad-range visible-IR light sensor
• LED: Ships with LED wavelength of choice
• LED Options: Works with any of our visible-IR LEDs. Currently we have over 10 wavelength options available
• Firmware: https://github.com/iorodeo/open_colorimeter_firmware
• Example Applications: Colorimetric assays

Multichannel Open Colorimeter

• Product Page: https://iorodeo.com/products/multichannel-colorimeter
• Light Sensor: AS7341 10-Channel Light Sensor
• Sensor Overview: 10 fixed channels including 8 visible light channels, 1 IR channel and a clear channel.
• LED: Ships with a white LED board
• Firmware: https://github.com/iorodeo/multichan_colorimeter_firmware
• Example Application: Colorimetric assays where you want to examine absorbance across multiple wavelengths at the same time. Less sensitive than the TSL2591

UV Open Colorimeter

• Product Page: https://iorodeo.com/products/uv-open-colorimeter
• Light Sensor: AS7331 UV Sensor
• Sensor Overview: 3 channels for measuring UV-A, UV-B and UV-C. We also developed a Python library for this sensor. More information about the sensor in this post.
• LED Options: Works with any of our UV LEDs. Currently we have 7 wavelengths available
• Firmware: https://github.com/iorodeo/uv_photometer_firmware
• Example Application: Protein quantification by absorbance at 280nm

Open Colorimeter Plus (in development)

• Light Sensors: Dual TSL2591 for measuring absorbance or scattering or fluorescence
• Sensor Overview: Light measurements with a right-angled light sensor.
• Example Application: Turbidity & fluorescence measurements e.g. DNA quantification assays

Open Colorimeter Product Guide

Documentation site for the Open Colorimeter, Multi-Channel Colorimeter, UV Open Colorimeter & Open Colorimeter Plus

Product Guide Home Page