Sunday 30 June 2013

NEDERLAND YOUR NEXT TRAVEL DESTINATION

March 13, 2013
COUNTRY DESCRIPTION: The Netherlands is a highly developed, stable democracy. Tourist facilities are available throughout the country. Read the Department of State’s Fact Sheet on the Netherlands for additional information on the U.S.-Netherlands relationship.
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SMART TRAVELER ENROLLMENT PROGRAM (STEP) / EMBASSY LOCATION: If you are going to live in or visit the Netherlands, please take the time to tell our Consulate General in Amsterdam about your trip. If you enroll, we can keep you up to date with important safety and security announcements. It will also help your friends and family get in touch with you in an emergency. Here’s the link to the Smart Traveler Enrollment Program.
Local embassy and consulate information is available below and at the Department of State’s list of embassies and consulates.
Please note that all requests for consular assistance in the Netherlands must be directed to the Consulate General in Amsterdam. There are no consular services available at the Embassy in The Hague.

Consulate General of the United States, Amsterdam
Museumplein 19
1071 DJ Amsterdam
Telephone: (31) (20) 575-5309
Emergency after-hours telephone: (31) (70) 310-2209
Facsimile: (31) (20) 679-0321

Embassy of the United States, The Hague
Lange Voorhout 102
2514 EJ The Hague
Telephone: (31) (70) 310-2209
Facsimile: (31) (70) 361-4688
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ENTRY / EXIT REQUIREMENTS FOR U.S. CITIZENS: The Netherlands is a party to the Schengen Agreement. As such, you may enter the Netherlands for up to 90 days for tourist or business purposes without a visa. The 90-day period begins when you enter any of the Schengen group of countries. If you are traveling for any other purpose, or if you intend to stay longer than 90 days, you should inquire about the appropriate visa at the Dutch Embassy or a Dutch Consulate in the United States. Your passport should be valid for at least three months beyond the period of stay. For further details about travel into and within Schengen countries, please see our Schengen fact sheet.  
For further information, contact the Embassy of the Netherlands at 4200 Linnean Avenue NW, Washington, DC, 20008, one of the Dutch consulates in Chicago, Los Angeles, New York, or Miami, or one of the various honorary Dutch consulates throughout the United States. Additional information is available on the Dutch Board of Tourism and Conventions website. Visit the Embassy of the Netherlands' website for the most current visa information. Information on work, residency, and immigration requirements in the Netherlands can be found on the website of the Dutch Immigration and Naturalization Service.
The U.S. Department of State is unaware of any HIV/AIDS entry restrictions for visitors to or foreign residents of the Netherlands.
Information about dual nationality or the prevention of international child abduction can be found on our website. For further information about customs regulations, please read our Customs Information page.
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THREATS TO SAFETY AND SECURITY: Since 2004, Dutch government security measures have been in place in response to concerns about terrorist activity in the Netherlands by international and domestic extremist groups. The Dutch Government has determined the current terrorist threat level to be "substantial." According to the Dutch National Coordinator for Counterterrorism, this level, the second-highest of four levels, means that “there is a realistic possibility that an attack will take place in the Netherlands.”
We encourage you to keep up with the latest news while in the Netherlands and to take steps to increase your security awareness. As with other countries in the Schengen area, the Netherlands’ open borders with its European neighbors allow for the possibility of terrorist groups entering/exiting the country with anonymity.
Demonstrations are commonplace in the Netherlands and may range in number from a few demonstrators to several thousand. Prior police notice is required for public demonstrations, and police oversight is routinely provided. Nonetheless, even demonstrations intended to be peaceful can turn confrontational and possibly escalate into violence. We urge you to avoid areas of demonstrations if possible, and to exercise caution if near one. Visitors should stay informed about demonstrations from local news sources and hotel security. Additionally, information regarding demonstrations brought to the attention of the U.S. Consulate General Amsterdam will be posted on the Demonstrations page of the Consulate website.
Stay up to date by:
  • Bookmarking our Bureau of Consular Affairs website, which contains the current Travel Warnings and Travel Alerts as well as the Worldwide Caution ;
  • Following us on Twitter and the Bureau of Consular Affairs page on Facebook ;
  • Downloading our free Smart Traveler app, available through iTunes and the Android market, provides easy access to updated official country information, travel alerts, travel warnings, maps and U.S. embassy locations. Travelers can also set up e-tineraries to keep track of arrival and departure dates and make notes about upcoming trips; and
  •  Calling 1-888-407-4747 toll-free within the United States and Canada, or a regular toll line, 1-202-501-4444, from other countries. Take some time before travel to consider your personal security. Here are some useful tips for traveling safely abroad.
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CRIME: While the rate of violent crime in the Netherlands is low, tourists are often targeted by thieves. Visitors frequently fall prey to pickpockets, bag snatchers, and other petty thieves who target automobiles and hotel rooms. You should use your room or hotel safe, and keep your baggage locked or secured when you’re away.
While thieves may operate anywhere, the U.S. Consulate General in Amsterdam receives frequent reports of thefts from specific areas. Within Amsterdam, thieves and pickpockets are very active in and around train and tram stations, in the city center, and aboard public transportation. Theft is especially common on trains to and from Amsterdam’s Schiphol Airport and international destinations, where hand luggage and laptop computers are often targeted. Thieves often work in pairs; one distracts you, often by asking for directions, while the accomplice moves in on your momentarily unguarded property. The timing of these thefts usually coincides with train stops, enabling the thieves to escape. In addition, many U.S. citizens have reported the theft of purses and briefcases while eating in downtown restaurants, including hotel breakfast rooms. Never leave your personal items or baggage unattended when going to the restroom, buffet table, etc.
Although still relatively limited, electronic theft has increased dramatically in the Netherlands in recent years. In March 2012, the Dutch Banking Association reported 2011 losses at 92 million euros – nearly double that of 2010. Most of the theft involved “skimming,” a technique that copies bank card information. ATM and credit card users are advised to keep an eye on their cards at all times. If you feel uncomfortable using your card for any reason, use cash. Contact your credit card provider for further guidance. 
Confidence artists have victimized U.S. citizens around the world, including in the Netherlands. Typically, a U.S. citizen is notified via email of a winning lottery ticket, an inheritance, or other offer requiring his or her assistance and cooperation. The U.S. citizen is asked to forward advance payments for alleged “official expenses,” “taxes,” etc. and, often, to come to Amsterdam to conclude the operation. Another common scam involves an Internet friend or partner who is reported to have been detained by immigration authorities in the Netherlands en route to the United States, and will not be released unless additional funds are paid to the “traveler.” In every case, these reports have been determined to be confidence schemes.  Several U.S. citizens have lost tens of thousands of dollars in such scams. Funds transferred in response to such offers can rarely be recovered. Information on fraud schemes can be found on the U.S. Consulate General's website, and the Department of State's International Financial Scams page. If you suspect you have been targeted by a scam based in the Netherlands, you may report it to Dutch law enforcement authorities by email at voorlichting@klpd.politie.nl, or at the following address:  
KLPD, Financial Crimes Unit
PO Box 3016
2700 KX Zoetermeer
The Netherlands
Attention: Project Apollo
The Dutch Embassy in Washington, D.C. has a prepared letter that can be used to inform the Dutch Police of fraud.
Do not buy counterfeit and pirated goods, even if they are widely available. Not only are the bootlegs illegal to bring back into the United States, if you purchase them you may also be breaking local law. 
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VICTIMS OF CRIME: If you or someone you know becomes the victim of a crime abroad, you should contact the local police and the nearest U.S. embassy or consulate. We can:
  • Replace a stolen passport;
  • Help victims of violent crimes such as assault or rape find appropriate medical care;
  • Put you in contact with the appropriate police authorities, and contact family members or friends; and
  • Help you understand the local criminal justice process and can direct you to local attorneys, although the local authorities are responsible for investigating and prosecuting the crime.
The Criminal Injuries Compensation Fund (CICF) of the Netherlands provides financial compensation, under specific circumstances, for victims of crime and for those who have suffered injuries and consequent loss as a result of such incidents. The fund also provides for dependents or immediate family members of homicide victims. For more information, contact the Dutch Ministry of Justice at (31) (70) 414-2000.
The local equivalent to the “911” emergency line in the Netherlands is 112.
Please see our information on victims of crime, including possible victim compensation programs in the United States.
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CRIMINAL PENALTIES: While you are traveling in the Netherlands, you are subject to its laws even though you are a U.S. citizen. Foreign laws and legal systems can be vastly different from our own. Under Dutch law, for example, you may be taken in for questioning if you are unable to present your passport to local authorities. It’s very important to know what’s legal and what’s not in the country you are visiting. 
Note that your U.S. passport will not help you avoid arrest or prosecution if you break local laws. If you are arrested in the Netherlands, however, you do have theright to request that the police, prison officials, or other authorities alert the Consulate General of your arrest, and to havecommunications from you forwarded to the Consulate General. This accommodation is based on the Vienna Convention on Consular Relations, bilateral agreements with certain countries, and customary international law.
While some countries will automatically notify the nearest U.S. embassy or consulate if a U.S. citizen is detained or arrested in a foreign country, that might not always be the case. To ensure that the United States is aware of your circumstances, request that the police and prison officials notify the nearest U.S. embassy or consulate as soon as you are arrested or detained overseas.
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SPECIAL CIRCUMSTANCES: In recent years, U.S. citizens in the Netherlands have suffered death and injuries stemming from the use of marijuana, hashish, and other substances. Marijuana is a controlled substance in the Netherlands, and possession is a misdemeanor that can result in a fine. Historically, use of illegal substances has been tolerated when bought at licensed “coffee shops.” A new Dutch law, meant to prevent foreigners’ access to “coffee shops” and hence reduce drug tourism, was implemented in three southern provinces beginning in May 2012, and will be implemented nationwide in 2013. The law required the use of a “special pass,” available only to Dutch nationals, to access “coffee shops.” This law was later amended to allow local jurisdictions to develop their own enforcement plans and implementation time lines to prevent foreigner use of “coffee shops.”
”Coffee shops” are a haven for petty criminals who prey on tourists and other individuals under the influence of drugs. Persons who visit “coffee shops” have become victims of pickpocketing, identity theft, sexual assault, and other crimes. Visitors are warned that marijuana sold in the Netherlands may contain higher levels of THC, the active chemical in marijuana, which may exacerbate the drug’s effects and a user’s impairment. The U.S. Surgeon General has issued a warning against marijuana use. “Coffee shops” and other locations are known for selling other illegal substances, such as psychotropic mushrooms; visitors are cautioned against using such drugs, as they are dangerous. It is illegal to take any controlled substance, such as marijuana, into or out of the Netherlands.
The Netherlands instituted a comprehensive indoor smoking ban in July 2008. The ban includes all cafes, pubs, clubs, theatres, coffee shops, restaurants, hotels, airports, shopping malls, amusement centers, etc. Smoking is only allowed in private homes, in the open air, and in designated smoking areas.
Dutch customs authorities stringently enforce regulations concerning importation into the Netherlands of items such as firearms and other controlled materials. Contact the Embassy of the Netherlands in Washington, D.C. or one of the Dutch consulates in Chicago, Miami, San Francisco, or New York for specific information regarding customs requirements. Aerosol self-defense sprays, such as mace or pepper spray, are illegal to own and/or possess in the Netherlands.

You must carry identification at all times in the Netherlands if you are age 14 or older. Accepted forms of identification for U.S. citizens include a U.S. passport or a Dutch residence card issued by the Ministry of Foreign Affairs. A copy of a U.S. passport is not sufficient under Dutch law.
Dutch authorities may require U.S. citizens who apply for or obtain Dutch nationality to renounce their U.S. citizenship. For further information, visit the Dutch immigration and naturalization authority website and the U.S. Consulate General website.
LGBT Rights: Lesbian, gay, bisexual, and transgender (LGBT) individuals enjoy full rights in the Netherlands. The LGBT community is protected by anti-discrimination laws, and there are no legal or governmental impediments to the organization of LGBT events. The Dutch Justice Ministry has reported a rise in reporting of harassment, mostly verbal abuse, of LGBT individuals as a result of government campaigns urging victims to report incidents.
ACCESSIBILITY: Dutch law guarantees equality and the right to access for people with disabilities. Information is available in Dutch on the Ministry of Public Health website
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MEDICAL FACILITIES AND HEALTH INFORMATION: Good medical facilities are widely available. Emergency medical response can be accessed by dialing 112. Pharmacies (“Apotheek”) are widely available and can assist with emergency prescription needs. Some common medications are not available in the Netherlands without a prescription, and some prescription drugs cannot be sent to the country. Travelers are urged to carry an adequate supply of prescription drugs in their original container, in their carry-on luggage. Please carry a letter from your pharmacist or medical doctor with you, as some drugs are subject to confiscation by local custom agents. Those traveling with any pre-existing medical problems should bring a letter from the attending physician, describing the medical condition and any prescription medications, including the generic name of prescribed drugs.  
Vaccinations are not required for travel to the Netherlands.
You can find good information on vaccinations and other health precautions on the Centers for Disease Control and Prevention ( CDC) website. For information about outbreaks of infectious diseases abroad, consult the World Health Organization (WHO) website, which also contains additional health information for travelers, including detailed country-specific health information.
 MEDICAL INSURANCE: You cannot assume your insurance will go with you when you travel. It’s very important to find out BEFORE you leave. You need to ask your insurance company two questions:
  • Does my policy apply when I’m out of the United States?
  • Will it cover emergencies like a trip to a foreign hospital or an evacuation?
In many places, doctors and hospitals still expect payment in cash at the time of service. Your regular U.S. health insurance may not cover doctor and hospital visits in other countries. If your policy does not go with you when you travel, it’s a very good idea to take out another one for your trip. For more information, please see our medical insurance overseas page.
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TRAFFIC SAFETY AND ROAD CONDITIONS: While in the Netherlands, you may encounter road conditions that differ significantly from those in the United States.
In the Netherlands, travel in, around, and between cities is possible via a highly developed national public transportation system, an extensive system of bike paths, and by automobile and motorcycle on a modern highway system. Rail is often a convenient alternative to driving, particularly in the areas around Amsterdam, The Hague, and Rotterdam, where road congestion is frequent. Rail network information is available online. Intercity travel by road is relatively safe in comparison to some other European countries.
A valid driver’s license issued by a Department of Motor Vehicles in the United States is valid for use in the Netherlands for up to 180 days while in tourist or visitor status. You must use seat belts and child seats. Driving is on the right side of the road, as in the United States. Speed limits are strictly enforced via radar. Traffic cameras are pervasive throughout the Netherlands and tickets for traveling even 2-5 km/h over the limit are common. The maximum speed limit on highways is 120 km/h, with a highway speed limit of 100 km/h posted in most urban areas. Secondary roads and some urban-area highways have a speed limit of 80 km/h. The speed limit in towns and cities is 50 km/h, with 30 km/h zones in residential areas. The Dutch Government has reduced speed limits on certain roads near cities in an effort to reduce air pollution. You should be aware that speed limit signs are electronic, and therefore speed limits may be changed remotely by authorities depending on traffic conditions. Drivers must yield the right-of-way to drivers and bicyclists coming from the right at intersections or traffic circles unless otherwise posted. The maximum allowable blood-alcohol content in the Netherlands is 0.05%. Use of cellular telephones while driving without the use of a hands-free device is prohibited, and is punishable by severe fines.
Lanes in the center of many urban two-way streets are reserved for buses, trams, and taxis. In cities, pedestrians should be mindful of trams, which often cross or share bicycle and pedestrian paths. Serious – and sometimes fatal – accidents involving pedestrians or bicyclists colliding with trams occur each year. Motorists should be especially mindful that bicyclists have the right-of-way; motorists must yield to bicyclists. Pedestrians should not walk along bicycle paths, which are often adjacent to the sidewalk and usually designated by red pavement.
Bicyclists and pedestrians should be particularly cautious during the winter months, when paths, roads, and especially bridges can be icy and extremely slippery.

Taxi service in the Netherlands is safe but expensive. Trams and buses are both convenient and economical, but are often frequented by pickpockets.
Please refer to our Road Safety page for more information. Also, we suggest that you visit the website of the Dutch Board of Tourism and Conventions for additional information.
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AVIATION SAFETY OVERSIGHT: The U.S. Federal Aviation Administration (FAA) has assessed the Government of the Netherlands’ Civil Aviation Authority as being in compliance with International Civil Aviation Organization (ICAO) aviation safety standards for oversight of the Netherlands’ air carrier operations. Further information may be found on the FAA’s safety assessment page.
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CHILDREN’S ISSUES: Please see our Office of Children’s Issues web pages on intercountry adoption and international parental child abduction
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* * *
This replaces the Country Specific Information for the Netherlands dated August 9, 2012, to update the Special Circumstances Section.
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Worldwide Caution

Travel Warnings

Travel Alerts

Country Information

US Flag




·      WORLD
The world health organization has concluded that exposure to diesel enginge exhaustis associated with an increased risk for lung cancer” and possibly also for bladder cancer.

·      ANTARTICAR
Fossilized pollen and spores recovered from seabed sediment reveal that the Antarctica once supported palms and near-tropical forests. During the so-called “ Eocene green-house period”. Winters were mild and “essentially frost-free” and temperatures at the poles were not vastly different from those at the equator.

·      EL SALVADOR
In mid-april 2012, government officials heralded El Salvador’s  first murder-free day in almost three years. Plagued by drug related violence, in 2011 the country had a homicide rate of 60 per 100,000
_one of the worst in the world

Tuesday 18 June 2013

Motorcycle Shell DIY Garage

Here I made a Motorcycle Shell Garage, using PVC pipe and a Tarp.

Step 1: PVC Pipe

I took PVC pipe with T connectors and elbows. I made 5 U shapes.

Step 2: T Connectors

I used 5 connectors and a lawn tractor hitch to connect to the support rails. I trimmed the ends off flush.

Step 3: Cut And Sew Tarp

Cut and Sew the tarp in sections to fit the pipe.

Step 4: Sew For PVC Pipe

Sew 3 inches along edges of tarp at all the places where the pipe will fit inside.

Step 5: Finnished

(PS, check your inbox)

IMPORTANCE OF VEGETABLES


You already know that eating a large amount of plant matter, be it vegetable, fruit, or nuts, is critically important for your acid-base balance.  But, maybe we should back-up slightly and just talk about all the essential vitamins and minerals contained in vegetables.  This is by no means an exhaustive list, but here are some of the key vitamins and minerals that you get from eating vegetables (and fruits too).  As you can see, some vegetables are little powerhouses of nutrition (like kale), but in order to make sure you get adequate amounts of all the necessary vitamins and minerals, I suggest eating as big a variety of vegetables as you have access to.  Also keep in mind that often vitamins are linked to the color of a vegetable, so “eating from the rainbow” is a good way to make sure that you are getting everything you need. 
Carotenoids (including Vitamin A, lycopene and Beta-Carotene):  These are potent anti-oxidants and important for immune system function.  Vegetables rich in carotenoids include:  anything red, orange or yellow (like carrots, beets, squash, sweet potato and bell peppers) and also dark green (like kale, spinach, collard greens and broccoli).  Tomatoes are particularly rich in lycopene (yeah, yeah, I know they’re a fruit).
Vitamin B (including Vitamin B6 and Folate):  These vitamins are important in cell metabolism (including cell growth and division), immune system function, and nervous system function.  Vegetables rich in B Vitamins include: orange and red vegetables (like carrots, sweet potatoes, and beets), many green vegetables (like artichoke, asparagus, okra, broccoli, and green pepper), green leafy vegetables, and mushrooms and cauliflower.  Avocado (yeah, yeah, technically a fruit) is also very high in several B vitamins.
Vitamin C:  Vitamin C is a potent anti-oxidant, is necessary for immune system function, and is also necessary for several enzymes to function in the body (like some enzymes that help make collagen, which is why Vitamin C deficiency causes scurvy).  Vegetables rich in Vitamin C include: artichoke, asparagus, avocado, broccoli, carrots, cauliflower, cucumber, green pepper, kale, mushrooms, onions, potatoes, spinach, squash, and sweet potato.  
Vitamin K:  Vitamin K is critical for making some important proteins in your body that are involved in blood clotting and metabolism.  Vitamin K is found in cruciferous vegetables (broccoli, cauliflower, cabbage, kale, Brussels sprouts, turnip greens etc.) and also dark green leafy vegetables.
Calcium:  In addition to forming bone, calcium is essential to many processes within the cell, as well as neurotransmitter release and muscle contraction (including your heart beating!).  Vegetables rich in calcium include dark green vegetables, parsnips, turnips and butternut squash.
Chromium:  Chromium is important for sugar and fat metabolism.  Vegetables sources of chromium include: onions, garlic, cabbage, carrots, mushrooms, parsnips and green leafy vegetables. 
Copper:  Copper is involved in the absorption, storage and metabolism of iron and the formation of red blood cells. Vegetables containing copper include: artichokes, parsnips, pumpkin, winter squash, and green leafy vegetables.
Iron:  Iron is a key component of hemoglobin, the protein in your blood that binds to oxygen and transports it throughout your body.  Dark green leafy vegetables are rich in iron. 
Magnesium:  Magnesium is necessary for cells to live.  Over 300 different enzymes within your cells need magnesium to work, including every enzyme that uses or synthesizes ATP (the basic energy molecule in a cell) and including enzymes that synthesize DNA and RNA.  Vegetables rich in magnesium include all green vegetables, carrots, squash, sweet potatoes and especially dark green leafy vegetables like spinach and kale. 
Manganese:  Manganese is necessary for enzymes that work to protect the body from and repair damage caused by free radicals.  Vegetables high in manganese include sweet potatoes, leeks, eggplant, beets, cruciferous vegetables (broccoli, cauliflower, cabbage, kale, Brussels sprouts, turnip greens etc.), and dark green leafy vegetables.
Potassium:  Potassium is critical for the function of every cell; it is necessary for nerve function, cardiac function and muscle contraction.  Vegetables rich in potassium include cruciferous vegetables (broccoli, cauliflower, cabbage, kale, Brussels sprouts, turnip greens etc.), many orange vegetables (carrots, squash, sweet potato), eggplant, and dark green leafy vegetables.
Sulfur:  Sulfur is widely used in biochemical processes, including being a component of all proteins and being important for the function of many enzymes and anti-oxidant molecules.  Cruciferous vegetables and vegetables in the onion family are the best sources of sulfur.
Zinc:  Zinc is important in nearly every function of the cell, from protein and carbohydrate metabolism to the immune system.  Most green vegetables are a good source of zinc.  


Monday 17 June 2013

Solar Tracker in the Internet Cloud

I have entered this Instructable into the Green Design Contest, Battery Powered Contest and Epilog Challenge contests. Your votes will help get more awesome stuff into my garage, which will enable me to make more contributions to this site :-)
This is a Solar Tracker. A full size, internet cloud connected, smartphone accessible Solar Tracker built mainly from 2x4s and plywood, employing wooden peg gears, recycled curtain poles, nuts, bolts and threaded rod. The solar tracker uses a home built electronic controller incorporating WiFi, stepper motor drives, accelerometer and magnetometer. The tracker was designed to drive a full size 90W panel in azimuth and elevation. The gears driving the tracker are wooden peg gears commonly used in the 16th century. The gears  were designed using modern 3D CAD (Solidworks). Connecting the wooden peg gears to the internet cloud just seemed like the right thing to do. This is not a waterproof design – you will need to consider modifications to waterproof your derivative design.

The project includes mechanical mechanisms, web application, free/green solar energy, firmware, basic electronics, a microcontroller, accelerometer/ magnetometer, the Internet of Things, WiFi, 3D Modeling, CNC machining, re-use and basic woodworking. The Internet Of Things was enabled by the innovative Electric Imp - http://www.electricimp.com

The project started with a need to automate the irrigation of our raised vegetable garden. The purpose of the vegetable garden is to reclaim some semblance of self reliance on the veggi front. Adding a solar panel allows the vegetable garden to water itself in a self-reliant way. Adding a rain barrel collection system as a water source ramps the self-reliance up further and is an environmentally sound thing to do. 90W is certainly way more power than we need, but I’m sure over time I will find more things to connect. The rain collection system is documented in another Instructable http://www.instructables.com/id/Recycle-Pallet-Rain-Barrel-Stand/. A future instructable will document the irrigation system as time permits.

The need for solar tracking is well documented in the available internet literature and scientific journals so there is no need for me to repeat it here. There are many arguments for and against, but efficiency gains of up to 30% versus static installation make solar tracking attractive. You just need to make sure that your motive power needs are much less than the potential efficiency gain. The additional cost of a tracking solution is added to the overall cost of a solar system which increases the time to a positive ROI. But tracking does not need to be expensive – at least not for the home hobbyist with a small number of solar panels. The tracking accuracy requirements are not that high either. Using a micro-controller to control the tracking made it easy to control the tracking power losses by having the system operate in a low power mode for as long as possible, with only an occasional high power spurt to turn the motors a small amount. There are other ways to do solar tracking (optical sensors connected to simple circuits for example - "light followers"), but microcontrollers create opportunities for feature creep and you will learned a whole lot too.  And learning is key.

Here's a short video to show the completed project in action:





Let's get started shall we?

 
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Step 1: Overview

The major system components identified in the block diagram:
  • 90 Watt solar Panel
  • Two axis motion platform constructed from 2x4’s complete with wooden peg gears and re-used curtain rod/pole.
  • Custom electronics – Electric Imp connected to stepper drivers, IO Expander and 6 Axis MEMS accelerometer/magnetometer
  • Rechargeable battery – retired unit from my motorcycle as it is no longer capable of turning the engine over.
  • Solar Charge Controller – cheap unit from ebay to make sure the battery doesn’t overcharge.
  • Smartphone or web browser – monitoring status and remote control. This is a non-essential part of the system done purely for a learning experience to see what it takes to connect a phone to a remote device. (gotta remember to hide the URL so that I don’t have too many people trying to control the panel!)
The tracker circuit includes a tilt compensated compass - the math was coded from an application note. The chip has 3 axis magnetic output and 3 axis accelerometer output. The magnetic output tells the system the azimuth angle and the accelerometer tells the system the the inclination with respect to gravity. The GPS location is hardcoded in the firmware (future will have this set by smartphone via the web). The firmware determines, based on the time of day and geographic co-ordinates, what the sun angle is with a Sun Angle algorithm ported to the Electric Imp Squirrel language from C++ (discussed in later steps). Firmware drives the azimuth and elevation motors to the Sun Angles based on feedback from the mag/accel.

This whole thing could be done a lot more simply, but I was intrigued by the Internet Of Things made possible by the Electric Imp. Rather than just reading web articles to get at best a superficial understanding, I found a way to try out the technology with an overkill solution to a common problem. Most solutions on the market today are "light followers". They control motors in response to the intensity of light to maximize incident sunlight on the panel. These work well, are low cost and are really all you need. But if you go that route, you will miss a learning opportunity on the electronics/firmware/web/IoT development side of things. This is some of what you'll learn::

1. ASP.NET programming model for web based applications. This is the server side code that the smartphone connects to, to see the status of the system, or to drive inputs to the controller for manual control of azimuth and elevation for debugging purposes.

2. AJAX which allows a web page to update without server page reload. Allows a web page to dynamically query server data directly and update the regions of the page without page reload. This is how the monitoring data is updated.

3. SQL Server work on the back end. The data from the Electric Imp is logged in a SQL Server database.

4. JQUERY Mobile - great open source library that simplifies working with the Web page Document Object Model. Just scratching the surface of it for this application but it has taken the web by storm. It is a great way to develop Smartphone HTML5 "apps".

5. HTML5 capabilities and the relation to potential hardware independent phone apps. Bumped into a number of apps that will take the Web app and turn it into a traditional phone store application. Some are free until you reach 10000 downloads... yeah right!

6. The Internet Of Things model and what companies like Electric Imp and COSM are doing to make this a reality even for low budget hackers like me.

7. Appreciation of cloud based services and the power of having services provided by the cloud. The electric imp is fully cloud
based.... your firmware lives in the cloud and is downloaded when your device connects to the internet.

8. Algorithms for tilt compensating a compass. Ultimately I implemented an app note but it was a major journey of "discovery" for
me.

9. Algorithms for sun angle prediction. Ported an Open Source implementation to the Electric Imp. Had no idea that sun angle prediction was such a complex problem. I don't fully understand the algorithm but tip my hat to anyone who does! IJW!

10. I2C hardware communication and associated peripherals - as long as I have been messing with electronics, never controlled an I2C peripheral before.

There is plenty more to learn with this project but I capped the list at 10!

I think the easiest way to tackle the documentation is to walk you through the building of the tracking base, then the electronics/firmware and finally the web app. The electronics and motion platform are independent components of the system. The tracker electronic module was designed to be a reusable component. The tracker base was designed to demonstrate peg gears and levers in another shameless attempt at stimulating my kids’ minds with engineering. A future weatherproof design using more 21st century motion mechanism is in the design phase and will be built over the course of the next year or so. I would like to offer that as complete package to interested consumers.

BTW - I have entered this Instructable into the Green Design Contest, Battery Powered Contest and Epilog Challenge contests. Your votes will help get more awesome stuff into my garage, which will enable me to make more contributions to this site :-)