Maximum Yield USA April/May 2019 | Page 50

“Recent advances in technology, like Raspberry Pi, Arduino, and other off-the-shelf products, have made a plethora of options available for low-cost sensors and controls to assemble do-it-yourself systems that will facilitate crop optimization.” INTRODUCING THE NEW PERSONAL 5 % CO2 SAFETY METER • • • • • Designed by Growers Measures CO2 30X a Minute Audible & Visual Warnings “Man Down” Alarm Durable Enclosure SPEAK TO AN EXPERT TODAY! Call Toll Free 386.872.7665 50 Maximum Yield Little recently returned from the Global Forum for Innovations in Agriculture in Abu Dhabi, where he presented his research on low-cost technology His message was: “Recent advances in technology, like Raspberry Pi, Arduino, and other off-the-shelf products, have made a plethora of options available for low-cost sensors and controls to assemble do-it-yourself systems that will facilitate crop optimization.” Little has built units that will sense low light and open a shade for more sun, or gas sensors that will monitor air quality, or note the presence of methane. He’s used the simple technology to rig a small container farm with integrated systems, everything from water quality monitoring to measuring pH, temperature, and dissolved oxygen, adjusting humidity, and even a fogger application to keep mushrooms moist. He’s rigged drones with a cheap camera system to automatically pollinate date palms. In Glendale, AZ, he’s working on solving a bird problem at a dairy. “It’s biblical,” he says, “so many birds they blot out the sky. We created a bank of Raspberry Pi cameras and a control module that implements computer vision to detect the birds — and emit some sort of deterrent to send them on their way.” Bottom line for Little is the DIY way for smaller-scale growers can be a viable alternative to commercial systems but, he adds, “By no means is a DIY system on par with a Hortimax controller.” The old adage “size doesn’t matter” really does apply in this case with Little conveying the caveat he’s promoting the inexpensive, do-it-yourself approach “for small- and medium-scale food production.” Bottom line? If you’re a small grower who likes to exper- iment, you belong to the group of backyard pioneers, the Carpe Diem group — seize the day. If your operation is larger, to the point where any sort of a process malfunc- tion could damage crops beyond the required market quality condition, you probably belong to the Caveat Emptor sector — buyer beware.