Putting a sonar depth sensor into a surfboard #Surfing #RaspberryPi @Raspberry_Pi
Aaron Curtis places a depth sonar into a surfboard, begging the question: why don’t they all have this feature?
Out surfing, I often wonder how deep the water is, and suspect based on wave behavior that I’m over a deep spot or a shallow spot. Waves generally break when they enter shallow water (there are various conflicting formulas for figuring out exactly how shallow). At beach breaks like San Onofre Bluffs, the best place to wait for a good wave is right over a sandbar, and the sandbars can move around from day to day.
One day I decided to stop wondering and find out. I figured I could build a depth sensing sonar into my board and maybe I’d learn a thing or two about the sand underneath me, the dynamics of waves, and maybe even improve my surfing. Along the way I also learned some things about my surfboard, glue, wireless power, etc. It was fun and it works so I figured I’d share all the details here.
Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards
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.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.