LED Spectroscopy – the light emitted by LEDs #LED #Light #Adafruit #RaspberryPi @bobthechemist
BobTheChemist posts an investigation on the light emitted by certain LEDs using a Mathematica interface to an Ocean Optics spectrometer on a Raspberry Pi.
Above are the spectra of several Adafruit LEDs measured. Black dots are experimental data and colored lines are best fits to skewed normal distributions.
I noticed that not all of the irradiation looks like a “normal” Gaussian shape. I tried fitting each of the spectra to a skewed normal distribution to get the maximum wavelength, the bandwidth and the skewness, which is a measure of how close to a normal distribution the spectrum is.
Here are the measurements for the wavelengths of the Adafruit LEDs shown above (Adafruit product number in parenthesis):
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.