Hackaday Prize

462 Articles

Hackaday Prize Semifinalist: Superhero Powers

September 12, 2015 by 8 Comments

The inspiration for [K.C. Lee]’s project for The Hackaday Prize didn’t come from seeing a grave injustice or inhuman suffering. He was watching Daredevil on Netflix. A show about a blind guy who fights crime in his spare time. People don’t have superhuman senses, and radioactive material falling off a truck in New York City leads to Ninja Turtles, not superheros. Still, a crude form of echolocation is well within the reach of the a capable hacker and would be very useful for those who are legally blind.

[K.C.]’s idea for human echolocation is a small wearable with ultrasonic sensors, 6DOF IMUs, and audio and haptic feedback. With a bit of math and a lot of practice, it’s possible to walk down a hallway, avoid obstacles, and find your way around without sight.

Human echolocation is a real thing, and it’s great to see a device that makes this minor human superpower a little more accessible. [K.C.] says there are 40 million people world wide that could use a device like this, and for an idea that was inspired by a superhero on TV, it’s one of the more interesting inspirations for an entry to The Hackaday Prize.

 

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Hackaday Prize Semifinalist: Better DIY Aquaculture

September 11, 2015 by 2 Comments

The theme of this year’s Hackaday Prize is ‘build something that matters’. For a lot of the teams entering a project, that means solving world hunger, specifically though agriculture. Grains are great, but proteins generally taste better and [Michael Ratcliffe] is focusing his project on aquaculture, or farming fish and other aquatic life.

The problem [Michael] decided to tackle is feeding fish at regular intervals according to water temperature, the age of the fish, and how much food is already floating in the tank. This is actually a difficult problem to solve; fish grow better when they’re fed more than once a day. Currently, most aquaculture setups feed fish once a day simply because it’s so time-consuming.

[Michael] is using Pis, Arduinos, USB cameras, and a lot of experience in automation and control systems to feed fish in the most efficient way. The possibilities of the project are interesting; the best research says a more efficient feeding schedule can translate into a 20% increase in production, which is a lot of extra food for the world.

You can check out [Michael]’s introductory video below.

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Hackaday Prize Semifinalist: A Device For Autism And Pomodoros

September 10, 2015 by 11 Comments

[jens.andree] found that many people on the autism spectrum have problems perceiving time. This makes the simplest tasks at home or at school harder. To help solve this problem, he’s created the Timstock Slim for this year’s Hackaday Prize. It’s a timer with four buttons to count down 5, 10, 15, or 20 minutes, with a neat LED bar graph showing the remaining time.

The Timstock Slim is an extremely simple device – it’s just an ATTiny84, a few shift registers, some LEDs, resistors, buttons, and a coin cell battery clip. It also does exactly what it says on the tin; it counts out a few minutes at a time, while providing visual feedback in the form of a bunch of LEDs.

Interestingly, this device may be useful to more than just those with autism; the pomodoro technique of time management uses a similar device – a kitchen timer – to keep its adherents on track. With no modifications at all, [jens’] Timstock could be used for a slightly modified pomodoro technique, geared towards 5, 10, 15, or 20 minute increments.

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Hackaday Prize Semifinalist: Big Data And Big Agriculture

September 9, 2015 by 8 Comments

For their entry to the Hackaday Prize, the team behind SentriFarm is solving a big problem for farmers in Australia. Down there, farms are big, and each paddock must be checked daily. This means hours of driving every day. Surely a bunch of sensors and some radio links would help, right?

This is the idea behind SentriFarm: a ground station that reads air temperature, atmospheric pressure, wind speed and direction, rain, light, UV and smoke, and relays that back to a central node. Yes, it’s basically a wireless weather station, but the sheer distance these sensors must transmit adds some interesting complexity.

The SentriFarm team is hoping to get about 10km out of their radio system, and they’re using a long-range, low power radio module to do it. This data is received by the ubiquitous radio towers found on Australian farms and sent to a database on the farm’s network. This data can be combined with data from the local weather service to get an accurate picture of exactly what’s happening in each paddock.

You can check out the SentriFarm project video below.

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Hackaday Prize Semifinalist: Smart Medication Dispenser

September 8, 2015 by 31 Comments

The biggest problems with pharmaceuticals isn’t patents, industry reps, or the fact that advertisement to consumers is allowed; this only happens in the United States. No, the biggest problem with pills and medications is compliance, or making sure the people who are prescribed medication take their medication. For his Hackaday Prize entry, [Joe] is working on a solution. It’s a smart desktop medicine organizer, and you can think of it as a pill box with smarts.

The list of features of [Joe]’s organizer include automatic pill organization – each prescription is accessed independently of all the others. When it’s time to take a pill, the smart medication dispenser plops out a pill. You can check out the demo video [Joe] put together using M&M candies.

There are a few more features for the Smart Desktop Medicine Organizer, including connecting to pharmacy APIs to order refills, checking for drug interactions, and setting timers (or not) for different medications; meds that should be taken every day will be dispensed every day, but drugs taken as needed up to a maximum limit will be dispensed as needed.

It’s a very cool project, and you can check out [Joe]’s video for the project below.

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Hackaday Prize Semifinalist: Playing With PIDs

September 7, 2015 by 8 Comments

PID control loops are everywhere, found in flight controllers for drones and the temperature control code for 3D printers. How do you teach PID control loops? [Tim] has a great demonstration for this, and it’s also a semifinalist for the Hackaday Prize.

[Tim]’s Sab3t is an educational tool designed to illustrate how PID control loops work. It’s a robotic table on which a large ball bearing sits perfectly balanced. On this table is a resistive touch screen from a display providing feedback for the location of the ball bearing. By adjusting PID values, the ball bearing either sits stationary on the table or flails wildly around, depending on the values in the PID algorithm being used.

As a teaching tool, it’s great; with a python script displaying a log of the PID values and the position of the ball on the plate, anyone can easily visualize how oscillations happen, what a well-tuned control loop looks like, and have some fun moving the ball bearing around to different locations.

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Hackaday Prize Semifinalist: Conserving Water And Eliminating Daydreaming

September 6, 2015 by 4 Comments

[mulcmu], we suppose, frequently wastes a lot of water while daydreaming in the shower. While daydreaming in the shower one day, we suppose again, he came up with the idea of keeping on task while in the shower. Thus was born the shower metronome, [mulcmu]’s entry for The Hackaday Prize.

The goal of the shower metronome is two-fold. First, it reduces the amount of water used in the shower. Secondly, it keeps the user on time for work. The shower metronome does this with a small audio beep provided by a small microcontroller attached to the shower frame or shower curtain.

The guts of the device are an MSP430 microcontroller, a few coin cell batteries, and a hall effect sensor that turns the device on, just like a magnetic door or window alarm. The microcontroller choice is perfect for the application; the MSP430 is extremely low power, and the device only draws 1uA in low power mode. This means the shower metronome will last a while when used only a few minutes a day.

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