Software for my DIY spectrometers, sensors, pcr, and incubators.

Software for reading a spectrum from a DIY spectrometer using OpenCV, calibrating it using non-linear regression to the function with the gnu scientific library.

• 1k diffraction grating
• Sony IMX179 8MP CCD
• Velcro, aluminum foil, and a lot of black legos
• CCD at m=0

spec [roi x y w h] [cal C0 C1 C2]

The ROI and constants for calibration can be specified on the command line. The calculated intensity and wavelength can be saved to csv alongside the calibration file for analysis in other programs.

This software currently uses a second-order polynomial for calibration off a minimum of three points. There may be value in moving to a cubic function.

nm = C0 + C1p + C2p^2

• Calibrating the Wavelength of Your Spectrometer
• OceanOptics Cubic Calibration
• PublicLab Linear Calibration

On startup the region of interest can be selected with a mouse. The pixels in this region of interest are summed to calculate intensity.

cmake .
make

Calibrating a CFL using the mercury peaks terbium peaks. Appears to accurately predict europium peaks at 612nm. CFL Spectrum Reference

PID controled incubator w/ IR

simple rgb sensor control for recording the rgb values of a sample being incubated by a connected computer