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Small library for ESP which returns the actual time adjusted by time zone and summer time.
TinySDR: Low-Power SDR Platform for Over-the-Air Programmable IoT Testbeds
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Less More. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.Wireless protocol design for IoT networks is an active area of research which has seen significant interest and developments in recent years.
The research community is however handicapped by the lack of a flexible, easily deployable platform for prototyping IoT endpoints that would allow for ground up protocol development and investigation of how such protocols perform at scale. We introduce tinySDR, the first software-defined radio platform tailored to the needs of power-constrained IoT endpoints. TinySDR provides a standalone, fully programmable low power software-defined radio solution that can be duty cycled for battery operation like a real IoT endpoint, and more importantly, can be programmed over the air to allow for large scale deployment.
We present extensive evaluation of our platform showing it consumes as little as 30 uW of power in sleep mode, which is 10,x lower than existing SDR platforms. We present two case studies by implementing LoRa and BLE beacons on the platform and achieve sensitivities of dBm and dBm respectively while consuming 11 research question of whether an IoT device can demodulate concurrent LoRa transmissions in real-time, within its power and computing constraints.
Mehrdad Hessar. Ali Najafi. Vikram Iyer. Shyamnath Gollakota. Long-range LoRa radio technologies have recently gained momentum in th Wireless connectivity for the Internet of Things IoT requires combinin Software-defined Radio SDR is a programmable transceiver with the capa Web spectrum monitoring systems based on crowdsourcing have recently gai Sensor networks with devices capable of moving could enable applications Software defined radio is a widely accepted paradigm for design of recon Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.
Recent years have seen development of numerous wireless protocols for Internet of Things IoT devices.18 SDR Tricks with the hackrf
Due to the lack of a de-facto standard, this space remains an active area of research for both industry and academia.
The rapid advances in this space however present practical challenges for researchers: each of these protocols requires a dedicated radio chipset to evaluate, and these proprietary solutions often leave little room for protocol modification. The academic community is therefore severely handicapped by the lack of a flexible platform, as even a complex multi-radio prototype cannot adapt to evaluate new protocols or even customize existing solutions. The current ecosystem therefore discourages researchers from investigating the important questions that arise when scaling up IoT networks, and more importantly taking a systematic approach to developing new protocols from the ground up.
Further, since many of these IoT testbeds can span hundreds of endpoints across a large campus or even a city, we need the ability to push changes to the PHY and MAC layers, using simple over-the-air software updates. This would allow for performance comparisons on a single testbed to investigate the trade-offs between existing standards as well as showcase the advantages of an entirely new custom protocol.
Moreover, to make such a system representative of real-world deployments, individual network nodes should model the constraints of IoT endpoints. Specifically, these devices should have appropriate power controls and options to duty cycle transmissions, have an ultra-low power sleep mode and also have interfaces to connect sensors. Finally, the ability to run these endpoints on batteries would also allow for flexibility of deployment in spaces without dedicated power access, or even in mobile scenarios.
Realizing this vision however is challenging with existing software defined radio SDR platforms. Existing SDR systems consume large amounts of power for transmitting data, do not support ultra-low power sleep modes, require wired infrastructure and often a dedicated computer and furthermore, are expensive.
In contrast, existing SDR platforms focus on achieving high performance in terms of bandwidth because they are tailored to the needs of gateway devices and not for IoT endpoint devices. Driven by a need for such a platform in our own research, we design tinySDR as shown in Fig.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
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TinyDB is a lightweight document oriented database optimized for your happiness : It's written in pure Python and has no external dependencies. To dive straight into all the details, head over to the TinyDB docs.
You can also discuss everything related to TinyDB like general development, extensions or showcase your TinyDB-based projects on the discussion forum. Whether reporting bugs, discussing improvements and new ideas or writing extensions: Contributions to TinyDB are welcome!
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Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit 4e6c9c6 Apr 12, PyMongo nor any dependencies from PyPI. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Update stale. Aug 25, Larger PNG version of the logo. Sep 4, Apr 11, Feb 19, CI: Collect branch coverage. Sep 13, Fix some spelling mistakes in the docs.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. CentSDR is tiny handheld standalone software defined receiver with LCD display, that is simple, low budget, but has reasonable perfomance.
This project is aimed at contributing to studies, experiments and educations around RF technology. Or you can flash the firmware using Nucleo. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again.
Latest commit. Latest commit e Dec 22, You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. ChibiOS fe0ba Jan 18, Jun 26, Feb 18, Feb 25, Dec 22, Apr 24, Feb 24, Loved the different modes of transport. Hotels well chosen for travel convenience. We took the 10 self-drive tour of Iceland in August, and it was an amazing experience. Everything worked like clockwork. We had vouchers for everything all neatly organized in our arrival package.
Can somebody give Helga G. We loved the notes that she put on the map for us about places we never would have discovered on our own.
We were so happy with our experience that we made sure to go to the Nordic Visitor office on our last day to say thank you in person to Helga. Iceland was spectacularly beautiful. We have also always wanted to see the Northern Lights, and I would not hesitate at all to contact Nordic Visitor in the future to arrange that trip for us. Just got back from a 7 day tour of southern Iceland organized by NordicVisitor. I was impressed that I went into this trip with no real knowledge of what I was getting myself, my wife and three teenage children into.
The trip went on without a single hitch. The car rental, hotel reservations and activities were all perfect and we had a blast. Thank you and I would recommend this company to anyone. The only hitch was cost which was difficult to get a handle on. In particular, the activities were costly. BUT, well worth every penny. We joined the Nordic Visitor tour party on the 25rd July following two days in Reykjavik on our own. Nordic Visitor arranged for a taxi (with welcome pack and documents) to pick us up from the airport on Thursday and on to our pre tour accommodation, we then made our way to the tour hotel on the Saturday evening.
Our guide Porsteinn (Steine) met us at the welcome meeting and told us our agenda. Sunday morning the tour set off at 9am the starting time for everyday.
The tour went round the whole island (around 2000km covered) visiting all the major sites that can be reached from the N1 ring road. We were of the 'comfort' level of accommodation and all the hotels and guesthouses were of at least 3 star quality with large clean rooms and en-suite facilities. Some had fabulous views as well. The guide constantly fed us information of the sites we visited in an informal but informative way with a few Icelandic folk stories and jokes thrown in.
The transport was a mini bus taking 16 of us comfortably from site to site with various comfort stops on the way.
There is a little walking to be done for example up to Dettifoss that cannot be avoided but all the walks were really strolls and nothing over taxing. The evening meals that were provided as part of the package were either in the accommodation or at local restaurants and were of a very high quality. There are optional extra's such as Whale Watching and the Thermal baths which although we pre booked could be booked on the tour. Transfer back to the airport was provided. In summary this was a very well organised tour both before leaving home and whilst there.
The program is varied and interesting, capturing all the major attractions. Would highly recommend the tour to anyone wanting to see the main sites but not do all the legwork of a self drive. A friend and I (who live in Australia and UK respectively) were keen to do a self drive tour of Iceland as we could have autonomy and flexibility and avoid the tour bus hordes.This week we're cramming in games new and old, from Battlefront II and Mario Odyssey to Nier and Horizon, with a dash of EA acquisitions, Mario movies, Xbox One X sales, prank call analysis, discarded Sega hardware, and a brand new producer.
This week it takes us two hours to talk through all the big new releases flying to and fro, and that's before we even get to Blizzcon news, industry downsizing, trophies 4 cash, the perfect Street Fighter, and historic Monopoly scams.
Virtual Reality's own Will Smith joins us to gab about Fire Emblem Warriors, PUBG hacks, secret Switch firmware, new Hitman stuff, old Xbox games, more storage units, and the recent allegations roiling the industry. This week's scrappy show covers Gran Turismo Sport, The Evil Within 2, Super NES wizardry, the shocking closure of Visceral Games, the latest VR goings on, runaway segment music, and your emails. We've come through the smoke and flame to talk about Shadow of War (and its loot boxes), the truth about Mugman, Street Fighter V's Arcade Edition, many much Gundam Versus, shower spiders, Erik Estrada, and disturbing genetic facts.
The spookiest month begins with indie favs like Steamworld Dig 2 and Cuphead, a Destiny 2 raid post-mortem, Forza progression woes, Red Dead 2 trailer impressions, bootleg Star Fox 2 carts, and your b-mails. Get ready and get cozy for another rousing week of UPF.
There's some PUBG, there's some sneakin', a weird baby(. Share: Twitter Facebook Reddit Filed Under: Landmark, Destiny, The Evil Within, Disney Fantasia: Music Evolved, The Order: 1886, Middle-earth: Shadow of Mordor, No Man's Sky, WWE 2K15, Batman: Arkham Knight, Just Survive, Lego Batman 3: Beyond Gotham, Battlefield Hardline, Battlecry, Mortal Kombat X, Forza Horizon 2 iTunes SoundCloud Download RSS 00:00:00 Episode List Load Comments Previous episodes 618 results 1 2 3 4 5.
These predictions are shared collectively by our team. Based on our daily interactions with insiders, the pain points of our prospects, and what is happening in the connected world, this is where we see things headed. The CDN ecosystem is dominated by a few big players. They also give up access to key features only next-gen CDNs can offer like raw logs, APIs, realtime purging and reporting, modern control interfaces, GitHub integration and more.
For these reasons, companies using traditional CDNs will reach their breaking point in 2015. Google has been pushing for more online security, especially given all the breaches in 2014. The major search engine has also started using HTTPS as an SEO ranking signal. Here are the main reasons why connections made over SSL will double again:Traditional CDNs that dominate market share focus on their biggest clients and pay little attention to the mid-market.
Instead support tickets go hours or days without a response, only to be handed off to a less-than-knowledgeable staff or redirected to an outdated FAQ or unmoderated forum.
At MaxCDN, we have an average ticket response time of under five minutes and a Net Promoter Score above 80. Customers will continue to become more sophisticated, with multi-CDN strategies becoming more common.
Easy-to-use APIs and a consistent experience along with high performance and reliability will continue to separate the well-run CDNs from the rest of the pack. HTTPS will become the mainstream. With the speed benefits from SPDY and the latest security issues (Snowden) there will be a huge movement toward an HTTPS-only internet.
Google already puts the pressure with SEO bonuses for HTTPS-enabled websites, and other companies like MaxCDN collaborate to provide free SSL. This means that all CDNs will need to adjust and embrace technologies such as SNI and SPDY, and at the same time reconsider charging extra for HTTPS requests.
This will push the Browser to become more of an operating system rather than Windows or Mac OS X. It is still years away, but I believe this initiative will encourage developers to write more software for the browser because it will have a near native feeling. Content delivery networks will be a huge factor in this initiative.
Assets will need to be as close to the last mile as possible to provide a native feeling. Progress bars that take over 2 seconds to load the content will be unacceptable to the UX. DSA (Dynamic Site Acceleration) will be a huge feature that all CDNs will need to have in order to provide a positive user experience. The mobile growth trend will continue and more people will adopt mobile first methodologies. Designers, developers, ad networks, CDNs, and content providers.
Across the board, there will be more optimization and compression because of the Mobile First mindset. Mobile video delivery needs will expand, and there will be more tools that allow for editing videos on the fly.If you are shy, there are ways to overcome social awkwardness and make lasting friends without relying on social media or the Internet.
To find people with similar interests, try reaching out to colleagues at work, joining a sports team or book club, enrolling in an education class, or volunteering for a good cause. Build your coping skills. Perhaps tweeting, texting or blogging is your way of coping with stress or angry feelings. Or maybe you have trouble relating to others, or are excessively shy with people in real life and find it easier to communicate with people online.
Building skills in these areas will help you weather the stresses and strains of daily life without relying on your smartphone. Recognize any underlying problems that may support your compulsive behavior. Have you had problems with alcohol or drugs in the past. Does anything about your smartphone use remind you of how you used to drink or use drugs to numb or distract yourself. Recognize if you need to address treatment in these areas or return to group support meetings.
Think of it more like going on a diet. Just as you still need to eat, you probably still need to use your phone for work, school or to stay in touch with friends. Your goal should be to cut back to more healthy levels of use. Therapy can give you a tremendous boost in controlling smartphone and Internet use. Cognitive-behavioral therapy provides step-by-step ways to stop compulsive behaviors and change your perceptions about your smartphone.
Therapy can also help you learn healthier ways of coping with uncomfortable emotions, such as stress, anxiety, or depression.
If your smartphone or Internet use is affecting your partner directly, as with excessive use of Internet pornography or online affairs, marriage counseling can help you work through these challenging issues. Marriage counseling can also help you reconnect with your partner if you have been using virtual worlds for most of your social needs. Of course, online support groups and forums should be used with caution. Sex Addicts Anonymous may be another place to try if you are having trouble with cybersex or compulsive use of sex and dating apps.
For those in need of greater intervention, there are now specialist treatment centers that offer digital detox programs to help you disconnect from digital media. For help finding these, as well as support groups and therapists, see the Resources and References section below. The American Academy of Pediatrics (AAP) recommends that kids under age 2 have no screen time, while young children older than 2 should spend no more than 1 to 2 hours a day viewing age-appropriate material.
Of course, once kids have their own smartphones, limiting their use becomes that much more difficult. Youngsters lack the maturity to curb their smartphone use on their own, but simply confiscating the device can often backfire, creating anxiety and withdrawal symptoms in your child.
Instead, there are plenty of other ways to help your child find a healthier balance: Be a good role model. Try not to let your own smartphone use distract from parent-child interactions. Other apps can eliminate messaging capabilities while in motion, so you can prevent your teen using a smartphone while driving. Restrict the use of smartphones or tablets to a common area of the house where you can keep an eye on your child's activity and limit time online.
Encourage other interests and social activities. Get your child out from behind the phone or computer screen. Expose kids to other hobbies and activities, such as team sports, Scouts, and afterschool clubs. Spend time as a family unplugged.
Talk to your child about underlying issues. Compulsive smartphone use can be the sign of deeper problems. Is your child having problems fitting in.