Point-of-source sensors represent the future of agriculture, manufacturing, medicine, and more. Electrical sensors are inherently less expensive and less cumbersome than optical or spectroscopic based sensors. Printed electronics enable low cost development of sensors and the use of organic semiconductors provides a tunable platform for highly specific and sensitive sensors. Our interests are in the development of chemical and biological sensors for improved process optimization and health. Through choice of carbon semiconductor and the manufacturing process we can optimize the selectivity, sensitivity and drop the limit of detection. Our cannabinoid sensors have led to commercial success through our spin off company: Ekidna Sensing inc. Several other projects within our group build on international collaborations and explore the development of sensors for key biomarkers and for prohibited or toxic substances.