ColorPAR

ColorPAR: A Low-Cost PAR and Color Sensor for Indoor Plants

ColorPAR is a DIY sensor that measures photosynthetically active radiation (PAR) along with basic color information using the AS7343 sensor. It’s designed for indoor gardeners, plant researchers, and educators who need an affordable way to track light quality and intensity under LEDs. This project includes open-source code, parts lists, and calibration steps using a commercial PAR meter as reference.