Wednesday, November 29, 2017

Lucid Dreaming | Am I Doing it Right?

Sorry if this is in the wrong section or the formatting is bad, I'm new :)
Either way...

So after a few weeks and receiving some feedback, I have a routine I've been following a few days and I want to make sure I'm doing everything right before I commit to it.

I'm combining, DILD (including ADA), MILD, and WBTB.
I've found my dream sign (anything related to my school), and I reality check when I see, hear etc. about my dream sign. I also reality check whenever I remember to (anywhere from once every 3-5 minutes when I'm bored to every half hour when I'm invested in something). After the reality check, I tell myself "Since I can't breathe through my nose when I plug it, I'm not in a dream, I cannot put my finger through my hand so I'm not in a dream, and I have *counts fingers* 10 fingers so I'm not in a dream, but man/but oh my gosh, I'm so excited to lucid dream tonight!"

Every few hours, I wonder how I got to where I am, and why I'm where I am. If anything seems off (which I always say there is, since I could be in a false awakening instead of actually waking up in the morning), I reality check. I also take the time to really focus on ADA for a few minutes and really take in everything around me. From my pants against my legs to the slight hint of the taste of gum in my mouth.
Before going to bed I listen to a video designed to meditate and help with reality checking/lucid dreaming (won't include video because of selling a book in the description). I don't listen to it with headphones because I can't go to sleep with them on. After it ends, I tell myself "I will have many lucid dreams tonight" and visualising myself becoming lucid and what I will do when I'm lucid after recognizing things related to my Dream Sign (or just via random reality checking)

I also sometimes listen to the previously mentioned meditation once or twice throughout the day and I plan on also daydreaming throughout the day as well.
The last thing I do is I normally naturally wake up at night. On weekends, I stay awake for about 20-30 mins (listening to a video where I get up, feel some objects around me, some other things, and returning to sleep. I can't include the video due to the person making them advertising a book in the description of his video.). If it's a weekday, I will fall back to sleep.
I also, of course, keep a dream journal. Whenever I wake up, if I remember anything from my dreams (even if it's just a minor detail), I write it down. I try to recall my dream before writing it down but sometimes I forget. If I ever wake up to do WBTB naturally, I'll write down my dreams before listening to the video.
BTW I do have YouTube Red so I play the YouTube videos with the screen off. I also sleep in a very dark room and it takes me about 10-20 minutes to fall to sleep which is why I practice MILD while falling to sleep. I'm also planning on eating eggs more as they have choline in them. I'm not that active with my ADA, but I'm working on it as well!

If I can include the videos while following the rules, I can link them so responses can be more accurate.

Thank you and I would greatly appreciate feedback and anything I could change to improve my odds of lucid dreaming!


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Sunday, November 26, 2017

A TEMPEST in a Dongle

If a couple of generations of spy movies have taught us anything, it’s that secret agents get the best toys. And although it may not be as cool as a radar-equipped Aston Martin or a wire-flying rig for impossible vault heists, this DIY TEMPEST system lets you snoop on computers using secondary RF emissions.

If the term TEMPEST sounds familiar, it’s because we’ve covered it before. [Elliot Williams] gave an introduction to the many modalities that fall under the TEMPEST umbrella, the US National Security Agency’s catch-all codename for bridging air gaps by monitoring the unintended RF, light, or even audio emissions of computers. And more recently, [Brian Benchoff] discussed a TEMPEST hack that avoided the need for thousands of dollars of RF gear, reducing the rig down to an SDR dongle and a simple antenna. There’s even an app for that now: TempestSDR, a multiplatform Java app that lets you screen scrape a monitor based on its RF signature. Trouble is, getting the app running on Windows machines has been a challenge, but RTL-SDR.com reader [flatfishfly] solved some of the major problems and kindly shared the magic. The video below shows TempestSDR results; it’s clear that high-contrast images at easiest to snoop on, but it shows that a $20 dongle and some open-source software can bridge an air gap. Makes you wonder what’s possible with deeper pockets.

RF sniffing is only one of many ways to exfiltrate data from an air-gapped system. From power cords to security cameras, there seems to be no end to the ways to breach systems.


Filed under: Radio Hacks, Security Hacks

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Start Tracking Satellites with This Low-Cost Azimuth-Elevation Positioner

Tracking satellites and the ISS is pretty easy. All you really need is an SDR dongle or a handheld transceiver, a simple homebrew antenna, and a clear view of the sky. Point the antenna at the passing satellite and you’re ready to listen, or if you’re a licensed amateur, talk. But the tedious bit is the pointing. Standing in a field or on top of a tall building waving an antenna around gets tiring, and unless you’re looking for a good arm workout, limits the size of your antenna. Which is where this two-axis antenna positioner could come in handy.

While not quite up to the job it was originally intended for — positioning a 1.2-meter dish antenna — [Manuel] did manage to create a pretty capable azimuth-elevation positioner for lightweight antennas. What’s more, he did it on the cheap — only about €150. His design seemed like it was going in the right direction, with a sturdy aluminum extrusion frame and NEMA23 steppers. But the 3D-printed parts turned out to be the Achille’s heel. At the 1:40 mark in the video below (in German with English subtitles), the hefty dish antenna is putting way too much torque on the bearings, delaminating the bearing mount. But with a slender carbon-fiber Yagi, the positioner shines. The Arduino running the motion control talks GS232, so it can get tracking data directly from the web to control the antenna in real time.

Here’s hoping [Manuel] solves some of the mechanical issues with his build. Maybe he can check out this hefty dish positioner for weather satellite tracking for inspiration.


Filed under: Radio Hacks

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Monday, November 20, 2017

What’s the best multitool for edc?

by Eric

How many times have you ever been out and about on your daily business and found yourself needing a screwdriver or a pair of pliers? No? So it’s just me then?

Yeah, I find myself in need of a tool of some sort several times throughout the day, but then, I do a lot with my hands. Some people never touch any type of tool at all their whole entire lives.

Multi-tools aren’t the perfect tool for every job, by any means. But a multi-tool is “A” tool for “A” job that happens when you least expect it. A multi-tool is a tool that is actually many tools, all in a neat, compact package that is intended for emergencies. Let’s take a look.



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Thursday, November 16, 2017

Lucid Dreaming | Random beginner's questions

Hi there, I'm starting in this and I have a few questions.

1) It's difficult for me to actually take the fact that I could be dreaming seriously when I do a RC, mainly because my normal dreams are not much vivid. How can I fix this and also get more motivated?

2) In the strange cases that I realise that I'm dreaming, I wake up quickly and, as I said, they aren't much vivid. Is this normal?

(Sorry if my English is bad)


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Wednesday, November 15, 2017

Lucid Dreaming | Always that I optain lucidity the actual dream scene fades out...

Always that I optain lucidity the actual dream scene fades out...
Everything goes black but i feel myself laying in the bed, so I just roll out from my bed and fall into the floor (at first I always feel super heavy and dizzy, like if gravity would be crazily high), after this i do perfom a reality check and be sure that is a LD because it really feels like real life except that there is always a tiny lighting... At this point I always go out from my room, which looks like the real one and I am at my house... And start doing whatever I want. I am still new to this so I still got some lack of control... It feels so real that i need to perform more reality checks and yell that im dreaming.
Any idea?


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Friday, November 10, 2017

Lucid Dreaming | Quick question on repatition

If you reality check every hour of everyday to the point where it forms a permanent habit of heard it then follows into your dreams.
If so then how come I don't smoke in my dreams? I smoke all the time and it's a permanent habit that iv done for the past 15 years? Is it due to the fact that there's no thinking involved in my habit or no awareness? Thanks =)


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Thursday, November 9, 2017

3D Printed Helical Satcom Feed

With the advent of cheap software defined radios made popular by the RTL-SDR project a few years back, satellite communications are now within the budget of even the most modest hacker. For $20 USD you can get a USB SDR module that is more than capable of receiving signals from any number of geosynchronous satellites, but you’ll need something a little more robust than rabbit ears to pick up a signal broadcast from over 22,000 miles away.

Building a satellite-capable antenna isn’t necessarily difficult, but does involve a fair bit of arcane black magic and mathematics to do properly; something that can scare away those new to the hobby. But by using a 3D printed mandrel, [Tysonpower] has come up with a feed you can build and mount on a standard dish without having to take a crash course in antenna theory. [Tysonpower] reports the feed has a center frequency 1550 MHz, and works well for reception of Inmarsat, AERO and HRPT signals.

The channel in the 3D printed core of the feed ensures that the inserted wire is of the correct length and in the perfect position for optimal reception. All you need to do is print the core, wrap it with wire, and then solder the end to a connector on a ground-plane that’s nothing more than a sheet of aluminum. [Tysonpower] was even kind enough to model up a mount that will allow you to bolt this feed to a standard satellite dish.

We’ve previously covered using RTL-SDR to receive Inmarsat transmissions, and hardware for the Outernet project, both of which would be great applications for an antenna like this.


Filed under: hardware, radio hacks

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Finding and Using Fire Starting Materials in the Wilderness

Wednesday, November 8, 2017

Lucid Dreaming | dry period

I used to have lucid dreams every night, or almost. I'd have five a night, many WBTB. Then I went to many psych wards who tried to strip me of my inner being, my secret self, my intuition and my psychic and telepathic powers. The psych pills I am on ruin my dreams. I haven't had a lucid in like three years, except for two, one that ended quickly but was vivid adn really real-like, another where I wasn't 100 percent lucid.

Any ideas to get my dreaming more vivid, I don't even know my dream signs anymore. When I was on the bus home I thought I was dreaming, guessed really, but I wasn't. Opposite experience I guess. I really want to explore my psyche without things like shrooms, lsd, and dmt. What can I do?


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Saturday, November 4, 2017

Lucid Dreaming | WILD & Light Sleep

So last night I decided to WILD, ive done many before and been succesfull so after a 6 hour snooze with a few mins wbtb I was all ready to go. As I lay there I brought my attention to my breathing and said a few mantras, endulged in some hypnogogic imagery etc. About 40 mins later the usual vibrations arrived along with loud noises and I found I was looking at my room - i got up and was lucid - standard stuff

My question is this. From beginning the wild to the transition was 40 mins which meant that as my rem was 40 mins away there was a lengthy period on Nrem2 ( light sleep )

The whole time I was wild'ing I felt fully awake and aware of my surroundings, in fact it was frustrating thinking I couldnt get to sleep but I must have been meditating in light sleep

Is this correct? Does meditating through light sleep (Nrem1) feel the same as being awake - whats your experiences in the 'gap' between going back to bed and hitting REM?

Thanks guys


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Wednesday, November 1, 2017

[Jeri] Builds a Magnetic Loop Antenna

Most new hams quickly learn that the high-frequency bands are where the action is, and getting on the air somewhere between 40- and 160-meters is the way to make those coveted globe-hopping contacts. Trouble is, the easiest antennas to build — horizontal center-fed dipoles — start to claim a lot of real estate at these wavelengths.

So hacker of note and dedicated amateur radio operator [Jeri Ellsworth (AI6TK)] has started a video series devoted to building a magnetic loop antenna for the 160- and 80-meter bands. The first video, included after the break, is an overview of the rationale behind a magnetic loop. It’s not just the length of the dipole that makes them difficult to deploy for these bands; as [Jeri] explains, propagation has a lot to do with dipole height too. [Jeri] covers most of the mechanical aspects of the antenna in the first installment; consuming a 50-foot coil of 3/4″ copper tubing means it won’t be a cheap build, but we’re really looking forward to seeing how it turns out.

We were sorry to hear that castAR, the augmented reality company that [Jeri] co-founded, shut its doors back in June. But if that means we get more great projects like this and guided tours of cool museums to boot, maybe [Jeri]’s loss is our gain?

[via r/Amateur_Radio]


Filed under: radio hacks

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The Definitive Bushcraft Skills List

by Nick O’Law

Bushcraft is the art of living in a natural environment, within and in harmony with nature. It is distinct from (though it shares a lot with) survival, where the mindset is only about getting out at the other end as safely as possible. Bushcraft will teach you skills not just to survive, but to thrive in comfort, and rely not on your gear, but yourself. This is a list of the skills you will need.

Finding and Purifying Water

Water is almost certainly the very first thing to worry about when learning bushcraft. The rule of three gives you a maximum of three days without water, which goes down to one in very hot, arid conditions. Remember that even once you have found water, in most cases it will then need at least to be filtered and possibly distilled or boiled before it is safe to drink.

Finding water is often just a matter of understanding your surroundings well, such as knowing that water flows downhill, so valleys and gullies are always a good start. Humans are only animals, and all other animals need water too, so following animal trails or watching for birds flying quickly (they fly slower after drinking, because they are heavier) are also good strategies.

There are many, many different ways to purify water, and there is not space here to do justice to all of them, but suffice it to say that filtering will remove only the larger particles, distilling will get rid of smaller stuff, and boiling will kill bacteria. Sometimes all three may be needed.

Finding Food

There are three ways to find food in the wild: foraging, hunting and trapping. Foraging is by far the easiest to learn, and is likely to produce the most reward. Learn what plants you can eat, and how best to cook them, but be very careful of lookalikes and mistakes. It is best to take a knowledgeable guide out with you at least for your first few trips, and to begin with ingredients and recipes which are simple and well known, like nettle tea and blackberries. Richard Mabey’s Food for Free is an acknowledged Bible for foragers.

Remember that bushcraft is not an ‘all or nothing’ venture’, it can be whatever suits you, so starting off by trying recipes out at home, and then only cooking what you are confident with in the bush is a good way to go. With all foods, but especially in the case of mushrooms, be very careful to only ever eat what you are absolutely certain is safe. Try to get off the beaten path, because the passage of many often obscures or kills plants, and fungi especially are very delicate.

After foraging, trapping is the next most reliable source of food. Learn first to make a few good traps. The Bushcraft Field Guide to Trapping, Gathering, and Cooking in the Wild is a great introduction to many types of snares and traps, with some basic bushcraft tips as well.

wilderness trap

photo: Apache foot trap

Remember that one of the most important things when trapping is to know your quarry, so go out and learn, not just about whatever you want to eat tonight, but also about its environment, where it’s likely to be, what might get to the trap first and so on, and try to factor this into your considerations when building traps.

Finally, there is hunting. Hunting is certainly the ‘coolest’ but also the least efficient way of getting food, and is best suited to large, wild game which it is unrealistic to trap safely and must be killed from a distance. Even in this case, the best course of action may still be to construct a trap to keep the animal immobile, and then approach and kill it from afar with a ranged weapon such as a bow or spear. On the other hand, this approach requires that the hunter checks all their traps very regularly, to avoid inhumane treatment of animals, or losing their quarry to another predator.

If you do decide to hunt directly, obviously ranged weapons are the far preferred choice. What you choose depends on your style of bushcraft, but most people will be going for some kind of bow. Once you have made this decision, the most important thing is the welfare of the animal as it dies. Bowhunting is great, and you may be perfectly happy with the ethics in principle, but surely a quick, clean death is preferable to a slow, dirty one? Make sure you are using the appropriate arrows and a strong enough bow to kill the animal as quickly as possible, and of course make certain that you will only hit an animal, not any people who might be in the vicinity.

Train hard first, practice in your back garden, then on static, and (if possible) moving targets in the woods, before attempting to hunt live game. If you get advice and help from a more experienced hunter then always heed it! Other than that, have fun, happy hunting!

In the case of both hunting and trapping, it is wise and educational to follow the Native Americans and try to use as much of the animal as possible. The primary reason for hunting is meat, but animal skins are a classic of bush tailoring and can be stitched with sinew of the same carcass. Antlers and bones make good tools (including needles), fish hooks and knapping strikers.

Making and Using Fire

Fire Starting methods can be categorized as: strikers, friction, and ‘modern’ methods. Strikers (such as flint and ferrocerium) will last forever (or near enough) but can be tricky to get used to using, and require very good, dry tinder.

With the exception of the fire plough, (which can be useful, but is very labor intensive) all friction methods are drills, which are the most ‘primitive’ of the fire methods. Most use some kind of wound cord, but you can also use your fingers. Drills are difficult to master and can be very tiring, and only really work in the right (dry) conditions with good tinder.

Once you can build (and build up) a fire, learn and practice building different sizes and shapes of fire, for different uses. For example long, thin fires (which can be made to be much hotter at one end) are the best for cooking. The Native Americans of old had a saying which went something like “Red man builds small fire and stays warm, white man builds large fire and stays warm collecting firewood”. There’s nothing wrong with being white, just don’t be white and stupid, build the correct fire for the job, and always clear up and leave no trace.

For longer term living and the beginnings of homesteads, you can also build perfectly good wood-fired ovens and kilns for making baked food and fired pottery. Practicing pit roasting (where you bury a fire with what you are cooking and dig it up the next day) is also an easy way to learn to cook big, hearty meals, without much advanced field dressing of meat.

Tracking

Tracking is an incredibly important bushcraft skill, with applications across the field. Good tracking will of course aid your hunting, but also realize that the flight pattern of a bird or a cloud of midges can lead you to water. The best way to learn tracking is in the field, by long practice. If possible start with a guide, who can teach you what to look for and ‘how to see’ in the right way, then develop further on your own.

Tracking should eventually become not a skill that you actively decide to use, but a part of how you see the world around you, an awareness of your environment and its mechanics.

Tying Knots

Although this is not ‘directly’ a useful bushcraft skill, you will find it comes in handy in a lot of situations. Building shelters is the most obvious, but tying up fire drills and hanging cooking pots also come to mind. Try to learn a range of different ones, across different applications. This is a good list to start with.

Situating and Building Shelters

The title includes the word ‘situating’ because the very first thing to know about shelter is what to build in a given environment, and exactly where to build it. Learn a variety of different environment-specific types (snow hole, debris hut etc.), and practice, practice, practice! Practicing and learning the little tricks which can only come with experience will make your shelters much better when you need them. Shelters should also be appropriate to conditions. If the weather looks good and you are only staying for one night, a few sticks and some debris as a heat reflector are enough, but a two week camp in late Fall is obviously a different matter.

Once you have the smaller, faster types of shelter down, invest time and build a more solid structure like a log cabin, or a shelter built into the side of a hill. This is good experience for long term bushcraft, or if you ever decide to set up a small homestead.

Remember not to discount man made shelters. Try out a few different tarps and learn to use them well. Learn the difference between heavyduty and ultralight and find what you like. If you prefer the heavier side of things, this advice applies more to tents. Remember also that many countries also have systems of free ‘mountain huts’, such as the bothies in Scotland, which provide free accommodation, and sometimes a fire and basic rations.

Finding your Way (Home or Away)

The most basic navigational consideration is to know how to get back to where you started. After that, you also need to know how to get where you are going, and ideally some place of safety in between.

The most important thing is to have a good working knowledge of your environment and its geography, so that even without specialist skills you can have a fighting chance. Look at some maps before you leave, and know where important resources like rivers and public shelters are.

Next is a compass, and knowing how to use it, as well as knowing at all times roughly what direction important places (your home, the nearest place of safety, your shelter etc.) are in relation to you. From this standpoint, you can work on ‘wild compass’, skills like learning to read the stars, sun and moon, and pick up signals from your environment, like feeling rocks, and using which side is warmer to work out where north is.

Taking Care of Yourself

Often overlooked is the art of what do when things go wrong in the bush, which is surprising given the number of sharp tools and fearsome animals available to cause havoc. Foraging again comes in useful here, as some plants (most notably the dock leaf) have medicinal qualities, and any non-harmful, large leaved plant can be used to improvise a bandage, at least briefly.

This is probably the only area of bushcraft where unless you have vast experience, and really know what you are doing, you must take ‘non-primitive’ equipment out with you, making sure to cover every eventuality. Pay particular attention to treatments for injuries from wild animals if they are in the area, serious cuts and bruises (so go heavy on dressings and plasters) and food-related illnesses (food poisoning, indigestion etc.).  Do not be afraid to take a big kit with you, it will be worth it one day.

Many first aid organizations such as the red cross offer training courses, and mountaineering and survival schools often do the same for specialist, bushcraft related first aid. Guidebooks can also be useful, and both The Bushcraft First Aid: A Field Guide to Wilderness Emergency Care Expedition Medicine come well recommended.

Hand Skills

These do not really come under a particular heading, but are important to mention nonetheless. Learning to use an axe, saw and knife properly, as well more specialist tools like a froe or a crook knife for whatever you are particularly interested in will save you a lot of time and effort.

A good place to start is with learning to make tools and equipment for all of the above skills. Make yourself a netting needle, fid or bradawl for complex ropework, or learn to make a knife from flint and pine pitch. Knowing a few ways of building a compass is also very handy. Hunting equipment is very satisfying to make, fishing hooks, lures and flies have endless variations to learn and play around with and bow making is a great thing to add to your arsenal of skills. Good guides can be found all around the internet, but in the case of blacksmithing, forging and more complex bow making skills like tillering, a course or at least some advice from a professional is must.

For a lot of the more ‘primitive’ inclined bushcrafters, the end game here is to flintknapping. With a good knowledge of flintknapping one can make all the tools for bushcraft, including those necessary for making further tools (bow making supplies for example). In the modern day, flintknapping techniques can also be applied to the thick glass which often washes up on river shores, for making arrowheads and blades.

A similarly fundamental skill is making rope, thin cords and threads (and then presumably needles, for which bone is often best). This skill more than any other is a part of ‘absolute bushcraft’ or primitive skills, where everything is made by you, from what you find around you.

In Conclusion

The best way to truly learn ‘bushcraft as a whole, is to combine these elements together, for example, you might take a weekend to learn more about bushcraft cooking, and eat only wild food, prepared only on a campfire, with only vessels you yourself have made. The point is to not treat these skills in isolation, but as parts of a single ability to live independently in the wilderness.



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