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Tampilkan postingan dengan label challenge. Tampilkan semua postingan
Tampilkan postingan dengan label challenge. Tampilkan semua postingan

Selasa, 05 Juli 2016

The Great Energy Challenge


Today 9 households around the world start their energy diet.

Mine is not one of the 9 being featured in National Geographics 360º Energy Diet, but Ive signed up.

Here are the points one can earn in each of six categories (Goods, Food, Transport, Home, Water, and Waste). Ive colored the ones Im already doing green, the ones Im not yet doing red.

1) GOODS

15 points each

  • Tally your water, electric, & gas use and calculate how you could cut CO2
  • Switch to organic for three produce items you regularly buy
  • Switch to natural/eco-friendly cleaning methods for three tasks
  • Switch from an imported non-produce item to a version produced locally
10 points each
  • Swap disposables that you regularly buy for reusables (e.g., cleaning wipes)
  • Repair or extend use of clothing items rather than buying new ones
  • Use old printer paper/magazines/retail shopping bags, etc. for wrapping paper
  • Rent or borrow an item that you rarely use, such as a drill or steam cleaner
2) FOOD 15 points each
  • Eat a vegetarian diet one day a week
  • Eat at home or brown-bag it at least once per week
  • Limit daily intake of beef to 8 ounces per person
  • Only consume seafood that has been sustainably raised and fished
10 points each
  • Start a food-based garden (hurray for aquaponics)
  • Go vegan or raw one day per week
  • Buy grass-fed beef instead of conventional
  • Give up one processed food that you normally eat
3) TRANSPORT 15 points each
  • Drive no faster than the speed limit, and avoid rapid acceleration/braking
  • Remove extra weight from your car and inflate tires to the proper pressure
  • Use public transportation instead of your car at least once a week
  • Reduce planned air travel by one trip
10 points each
  • Buy carbon offsets for your travel
  • Carpool or find a ride-sharing program
  • Switch to a more fuel-efficient car
4) HOME 15 points each
  • Turn heat/AC off when gone & change the thermostat by 3 ºF to reduce fuel use
  • Set frig to 37 ºF, freezer to 0 ºF, water heater to 120 ºF and washer to cold
  • Replace at least one third of your light bulbs with CFLs or LEDs
  • Disconnect TV, stereo, and computers and other electric devices when not in use
10 points each
  • If you have a second old refrigerator in your house, get rid of it
  • If your refrigerator is > 10 years old, get a new one with a top-mounted freezer
  • Insulate your water heater
  • Replace appliances with EnergyStar appliances
  • Hang clothes up to dry instead of using the dryer
  • Seal all windows and doors in your home with caulk or weather-stripping
5) WATER 15 points each
  • Give up bottled water for filtered tap water
  • Turn off the tap when brushing your teeth or scrubbing dishes
  • Shortening your shower by one minute or more. If you bathe, switch to showers
  • Replace shower head or tap with a low-flow model
10 points each
  • Use xeriscaping for your yard and avoid thirsty plant types
  • Install a rain barrel to collect water for garden, lawn and plants
6) WASTE 15 points each
  • Recycle all glass, aluminum, plastic, paper, batteries, and CF lightbulbs
  • Eliminate junk mail by taking yourself off their mailing lists
  • Change to paperless billing for bank account, credit card and bills
  • Eliminate the use of plastic and paper bags, both when shopping and at home
10 points each
  • Begin composting at home
  • Using biodegradable bags for walking the dog if the family has one
  • Recycle old athletic shoes and clothes
  • Recycle or donate old computers, cell phones and other electronics
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Minggu, 15 Mei 2016

AN ADDITION TO THE AMONIA NOTE

I went through my compiled data for the water readings just after I put that last blog out and realised that Garth had given it a dressing of lime. So there are now two factors that could be responsible for the amonia starting to kick on again. By the way it is still moving the nitrites so the plants are eating again, thats nice to know hey...

Right! Where were we.....

Yes of course Aquaponics. Aquaponics created by Rob Maslin is the embodiment of a sustainable system.  Well thats what the page says(Editor)

A couple of interesting Videos on Aquaponics at Home

Now, Heres a bit of High Tech

Welcome to New Aquaponics! We have just added a social bookmarking feature that

And just for a LAFF  Its called Utopia Aquaponics.

WARNING WARNING From Australia, Oh yes Via Strain Guide

Just last week in the lowlands of Scotland, within the town of Moffat an old fire station has been converted into an aquaponics farm.

 Do you live near AUSTIN?

Torrent downloads for Aquaponics

Heres a School Project for you.

Here is a Very, Very Special Video on Uganda

And on that note I think Ill close the notebook again...
Soon
O Z Z I E
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Minggu, 17 April 2016

Design Challenge With Adafruit GEMMA And Hats

Element14 and Adafruit just launched a global design challenge to turn a hat into a wearable item that is interesting and useful using the Adafruit GEMMA and an accessory pack from Adafruit."

PCBdesign007 gives this overview of the "Hats Off" Challenge:
"Participants will re-imagine the hat into new wearable technology solutions that provide real-world functionality using the Adafruit GEMMA...The Adafruit GEMMA is a tiny Arduino-compatible sewable microcontroller...Competitors will be encouraged to develop hat-like garments that provide functionality beyond shielding the wearer from sun or rain...The recruitment period, which starts today, will conclude August 4. A total of 10 competitors will be selected to build their designs and blog at the element14 design community, addressing their ideas and key challenges throughout the process. The competition will conclude October 31, 2014. Competitors will be judged on their creativity, quality of documentation and the execution of their project. The grand prize winner will receive an Oculus Rift from element14 and one complete FLORA Collection parts pack from Adafruit."
Element14 says:
Adafruit GEMMA
"Ten RoadTest challenge competitors will build electronics projects designed to be worn on the head using the Adafruit GEMMA sensor pack. Dress up like the ship in Close Encounters with flashing LEDs and simple tones, make a sparkling digital princess tiara for prom, stitch a VU meter baseball cap...We are looking for projects that stretch the tech as well as the craft of wearables....each competitor will be provided with a GEMMA Sensor Pack:
  • Adafruit Micro Lipo - USB LiIon/LiPoly charger - v1
  • Lithium Ion Polymer Battery - 3.7v 500mAh
  • Four Flora RGB NeoPixels V2
  • Stainless Thin Conductive Thread - 2 ply - 25 meter/85 ft
  • Photo cell (CdS photoresistor)
  • Small Alligator Clip Test Lead (set of 12)
  • GEMMA miniature wearable electronic platform
  • USB cable - A/MiniB - 3ft
  • Tactile On/Off Switch with Leads
  • Fast Vibration Sensor Switch (Easy to trigger)
  • Small Enclosed Piezo w/Wires"
GEMMA sensor pack
There are an increasing number of design challenges or competitions these days for microcontrollers (MCUs). One of my goals is to compile a list of competitions or challenges for MCU projects and get a few other people from the Humboldt microcontrollers community to collaborate with on submissions to one of these competitions. As we get into more advanced topics at the biweekly meetings, we can discuss those topics with respect to how they could be used in one or more of the current competitions. If the "Hats Off" competition sounds fun, sign up today!

Ive got info about a couple more competitions and hope to put together a post this weekend with a list of competitions of which Im aware. If you know of any MCU-related contests that are coming up or are still open to new participants, please send me an email at arcatabob (at) gmail {dott} com.

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Rabu, 30 Maret 2016

The Humboldt Laser Harp Project Part 2

[See Part 1 of the Humboldt Laser Harp project here]

So, Im still glad Im part of the Humboldt Laser Harp (HLH) project. But boy do I feel useless and clueless about whats going on from a technical standpoint...
SparkFun MIDI breakout board

There have been a few emails back and forth today between Ed, Nick and me about the HLH project. Eds getting a lot of the programming concepts figured out, e.g. "...I think Ive solved (assuming that any of this actually talks to a MIDI thing, anyway) the 16 string limit. The 16 MIDI channels are now dynamically assigned to different strings as needed, and released when the string is released. Not sure what would happen if you broke more than 16 beams. Probably the beams >16 simply wouldnt be played. Currently the notes have a hard cut on the end of them rather than a fade...Ill work on that if/when I have a sudden flash of insight. The number of analog input pins are the only limiting factor for the number of strings now. Given external comparators or an external (fast) ADC or analog multiplexer an Arduino could do a ton of strings with more or less this same code..." Nick is doing his part by pulling apart a laser and 3D printing a holder for the laser so we can easily fine tune where the laser is pointing. Hes also going to dig up a USB MIDI input for Ed to use during the design phase of this project.
SDS-50J MIDI connector

Tonight Ed evaluated using a SparkFun MIDI breakout board vs. the SparkFun MIDI shield vs. rolling his own MIDI connection. He decided to roll his own, and at this point, all he needs is a CUI Inc SDS-50J MIDI (DIN 5 pin) connector and a Lite-On Inc 6N137 optocoupler. Hes ordering those from Digi-Key, for a total of $1.78 plus shipping. Heres the optocoupler datasheet link if you want to read up on that.

Me? Im mostly reading the emails about what theyre doing.

6N137 optocoupler
Oh well, The important thing is a laser harp MCU device is being designed, the Humboldt Microcontrollers Group has launched their first group project, and well end up with v.1.0 of what will eventually be an interesting example of what you can do with MCUs.

Returning to the HLH launch meeting we had yesterday, here are a few other points about the project as it currently stands.
  • The laser harp will be the framed style rather than the unframed style. See the two pictures below.
    Unframed laser harp
  • The tentative height of the v.1.0 harp is 36 inches. The laser harp frame will probably be placed on a table when its exhibited in public, and probably on a somewhat lower stand when a laser harpist is sitting in a chair playing it. The width will likely be between 36 and 48 inches, so that its portable, so that an open horizontal hand can easily interrupt just one beam without accidentally breaking an adjacent beam, and so a laser harpist can comfortably reach all the beams.
  • Nick will provide computer speakers, a MIDI sequencer and an amplifier.
  • The goal of this project is to make a musical instrument, not just an electronic tone generator.
  • Yesterdays post referred to the Electronic Light Orchestra. The reason I used the word Light in that descriptive name is because:
    • When the laser harp is in a dark environment, the laser beams will be a light source.
      Framed laser harp
    • Nick has a color organ we will work to integrate into the HLH. The light organ has RGB LEDs that change intensity and color in response to music (audio frequency range) and the settings of the organ.
    • If I understood Nick correctly, we may also try out incorporating some background laser light show effects with the HLH.
  • One aspect of the laser harp we need inspiration and a bit of technical expertise, or at least some creative thinking, is laser beam presence enhancing. I hope that term is self-explanatory, but the issue we need to address is how to make a low-powered laser beam most noticeable by a person if the laser harp is not in a very dark environment or if the person playing the harp is not looking closely at the laser beam. Some of the enhancing techniques weve discussed are:
    • a fog machine, especially some type of fog generator that specifically is generating or concentrating fog in the area where the laser beams are.
    • a black booth or mini-pavilion that can be set up to enclose the laser harp and make the laser beams more visible.
      Fog machine
    • an air pulse generator that would put a concentrated air stream in the same location as the laser beam.
    • a water jet that runs in the same area as the laser beam.
    • Some other type of haptic signal that the laser harp player would feel when their finger or hand was breaking the laser beam.
  • Im going to research laser safety issues to make sure we understand what laser strength or power is acceptable for use with the general public so we dont have anyone get burned by the laser (skin or eyes).
Enough for tonight. More HLH posts will be showing up over the next couple weeks. Maybe Ed or Nick will have something they get so interested in whilst working on their parts of the laser harp that theyll feel compelled to write a blog post or two!

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