Winners of’s Earth Day Contest: Sun LIC, Auto-Go back Parafoil, & Water Flowmeter

Winners have simply been introduced for Hacakday’s Earth Day Problem. We have been searching for tasks that carry consciousness of environmental problems and are satisfied to rejoice three most sensible winners. Every have received a $200 buying groceries spree from Digi-Key who subsidized this contest.

Pictured above is the Open Glide Meter by way of [Eben]. The construct comprises sensors which can be submerged right into a river or move to gauge the rate at which the water is transferring. It makes use of a commodity plumbing drift quantity sensor to assist scale back prices, including an Arduino and contact display for studying the sensors and offering a UI to the person.

Top-altitude balloons are used for air high quality and climate sensing. To make the ones sensor programs extra reusable, (*16*) has been operating on a parachute restoration gadget that mechanically returns to a suite GPS level. It’s a parafoil with auto-pilot!

Energy harvesting is an interesting and tough sport. To assist ease the transition clear of batteries, [Jasper Sikken] evolved a sun harvesting module that fees a Lithium Ion Capacitor (LIC) from an excessively small sun panel. Primarily based round a 100 uF capacitor, it makes use of an AEM10941 power harvesting chip which contains Most Energy Level Monitoring (MPPT) to make use of the sun panel as successfully as imaginable. The totally charged module can output regulated 2.2 V and is aimed toward allotted sensor programs that may be run with none battery in any respect.

Congratulations to those three most sensible finishers, in addition to the b-parasite capacitive soil moisture sensor which used to be named as a runner up within the contest. There have been 72 entries on this problem so don’t put out of your mind to check out all of the box, and go away a remark at the ones that catch your eye to allow them to know all of us love seeing main points of significant builds!