tag:blogger.com,1999:blog-82906722679454593692024-02-18T23:28:19.141-08:00Marilyn Wolf's Embedded Systems, Internet of Things, and Cyber-Physical Systems BlogA blog about embedded computing systems, cyber-physical systems, and Internet of Things. We concentrate on technical topics but also discuss their implications.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.comBlogger216125tag:blogger.com,1999:blog-8290672267945459369.post-24751562869026912552017-11-03T08:48:00.002-07:002017-11-03T08:48:22.914-07:00My Embedded Blog Has MovedI have decided to officially move my embedded/CPS/IoT blog to h<a href="ttp://marilynwolf.us">ttp://marilynwolf.us</a>. This site gives you information on my books (with two more books due out soon) as well as this blog. Hope to see you there!Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-41732678692909975662017-10-30T15:47:00.000-07:002017-10-30T15:47:54.848-07:00My Experimental Blog SiteI have set up a new marilynwolf.us for my books. I can also use it to host this blog but the formatting system doesn't make it easy to feature both the books and the blog on the homepage. I have an experimental setup on <a href="http://marilynwolf.us/">marilynwolf.us</a>. Please go there, check it out, and let me know which you prefer. You can email me at wolf@ece.gatech.edu. Thanks!Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-66032052079830302872017-10-29T14:11:00.001-07:002017-10-29T14:11:59.549-07:00Heathkit SB-303<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJhL-AkMN4yCzsZSq1Y0ym1j37j8QFUpBMd_tV2EL8DsTMUzZEDQTvcMtV_tNikjr7jtXKeamOcoog0JnSHtKD12Q8h_YRuAXvDXHdhiN05gwFaIGLhvq4IGCFg24G-9tm5Qnc5HTZl0TT/s1600/20171027_204032.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="813" data-original-width="1600" height="162" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJhL-AkMN4yCzsZSq1Y0ym1j37j8QFUpBMd_tV2EL8DsTMUzZEDQTvcMtV_tNikjr7jtXKeamOcoog0JnSHtKD12Q8h_YRuAXvDXHdhiN05gwFaIGLhvq4IGCFg24G-9tm5Qnc5HTZl0TT/s320/20171027_204032.jpg" width="320" /></a></div>
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This column has nothing to do with computing so far, but it might in the future. This is a Heathkit SB-303 amateur band receiver. Great looking, isn't it? And it is one of a line of several Heathkit ham radios. You can find <a href="http://www.w6ze.org/Heathkit/Heathkit_030_SB_Line%20OV.pdf" target="_blank">here </a>a very interesting article on the Heathkit SB line which started in the early 1960s and ran into the early 1980s.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwtRQxr18KkjpEYwDiaYnouBGxC5fMRe5GkcxR3FEDcx8csCJmOCTAV5b7CeJR0rhk4-sHv5QNSD_Ouzujc9hEHSCXDQnFijGTLR-GqC8xxzjSFdofrItokKpP98_10wtgTa_2YmQSQjC2/s1600/20171027_174623.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1412" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwtRQxr18KkjpEYwDiaYnouBGxC5fMRe5GkcxR3FEDcx8csCJmOCTAV5b7CeJR0rhk4-sHv5QNSD_Ouzujc9hEHSCXDQnFijGTLR-GqC8xxzjSFdofrItokKpP98_10wtgTa_2YmQSQjC2/s320/20171027_174623.jpg" width="282" /></a></div>
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Here is the guts of the radio. This is an all-transistor design; most of the SB radios used tubes. These were kits---this radio was built by someone who did a pretty good job. It has also been restored by the previous owner. The large, electrolytic capacitors in the power supply tend to degrade over time and these have been replaced. The previous owner also repainted the case.<br />
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I am thinking about using one of these radios as the starting point for a hybrid digital/analog radio. By tapping signals the signals in the radio and connecting them to analog/digital converters, I can ship them to a computer or FPGA for digital processing. Many software-defined radio rigs run at relatively low sample rates and so do most of their digital processing in the baseband. A fancy data acquisition card could let me move the interface earlier in the radio, perhaps all the way to the first stage of amplification after the antenna. This sort of project would be a good way for me to get my hands dirty with software-defined radio; it would also be fun to compare the signal characteristics of the analog and digital versions. All of these plans, of course, depend on time permitting from other projects and duties. We shall see how things play out.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-42059297044028619442017-10-23T06:19:00.002-07:002017-10-23T06:19:54.720-07:00FAA Proposes Ban on Lithium-Ion Batteries in Checked-In LuggageGizmodo reports <a href="https://gizmodo.com/faa-proposes-worldwide-laptop-ban-for-checked-bags-on-i-1819706608" target="_blank">here </a>on a proposal by the FAA to ban devices with lithium-ion batteries in checked-in luggage. They would like to see such a ban to be worldwide. Their concern is based upon a test in which a lithium-ion battery caught fire next to a bottle of dry shampoo; the resulting fire was too fierce to be contained by aircraft fire suppression systems.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-80264153631342040872017-10-16T12:34:00.001-07:002017-10-16T12:34:17.461-07:00@Apollo50Wolf the Apollo Program 50th Anniversary CommemorationI have set up a Twitter account, <a class="DashboardProfileCard-screennameLink u-linkComplex u-linkClean js-nav" href="https://twitter.com/Apollo50Wolf" rel="noopener" style="-webkit-text-stroke-width: 0px; background: rgb(255, 255, 255); color: #66757f; font-family: "Segoe UI", Arial, sans-serif; font-size: 12px; font-style: normal; font-variant-caps: normal; font-variant-ligatures: normal; font-weight: normal; letter-spacing: normal; orphans: 2; padding-right: 5px; text-align: left; text-decoration: none !important; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;"><span class="username u-dir" dir="ltr" style="color: #657786; direction: ltr !important; font-size: 14px; text-align: left !important; unicode-bidi: embed;">@<b class="u-linkComplex-target" style="font-weight: normal;">Apollo50Wolf</b></span></a>, for the commemoration of the 50th anniversaries of the events of the Apollo program. Watch this feed for tweets on the anniversaries of Apollo events. The feed will start with Apollo 4, an unmanned test launch, on November 9.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-50038880126505324862017-10-16T10:09:00.000-07:002017-10-16T12:07:44.348-07:00WiFi encryption vulnerabilityAnandtech reports <a href="https://www.anandtech.com/show/11936/multiple-wifi-encryption-vulnerabilities-disclosed-affecting-almost-everything" target="_blank">here </a>on vulnerabilities in the WiFi encryption protocol. These flaws are in the WPA2 standard itself, not merely in some implementation of that standard. The proof-of-concept attack, developed at KU Leuven, is known as KRACK.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-37238069911907601642017-10-13T15:46:00.000-07:002017-10-13T15:46:01.773-07:00Power Consumption of Autonomous VehiclesExtremetech reports <a href="https://www.extremetech.com/extreme/257428-self-driving-cars-face-unexpected-problem-fuel-economy" target="_blank">here </a>on the power requirements of autonomous driving systems.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-76039398464831757802017-10-12T13:09:00.003-07:002017-10-12T13:09:54.638-07:00Autonomous Vehicle Test TrackNBC reports <a href="https://www.nbcnews.com/mach/science/fake-city-promises-real-change-transportation-ncna809136" target="_blank">here </a>on the Mcity autonomous vehicle test track at the University of Michigan. Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-20292978582957947382017-10-06T12:22:00.000-07:002017-10-06T12:22:12.687-07:00Security Problems in Internet CamerasExtremetech reports <a href="https://www.extremetech.com/electronics/257057-woman-films-new-internet-connected-camera-whispering-hola-senorita" target="_blank">here </a>on a report of a woman whose Internet camera was compromised, resulting in someone watching and talking to her.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-75423484960319686792017-10-06T07:22:00.003-07:002017-10-06T07:22:22.688-07:00AMD Embedded Radeon GPUAnandtech reports <a href="https://www.anandtech.com/show/11894/amd-announces-polarisbased-embedded-radeon-e9170" target="_blank">here </a>on the new Polaris-based embedded Radeon processor from AMD.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-43451319559644887132017-10-05T06:35:00.000-07:002017-10-05T06:35:18.336-07:00New SD Cards for Industrial and AutomotiveAnandtech reports <a href="https://www.anandtech.com/show/11889/sandisk-launches-sd-and-microsd-for-industrial-and-automotive-extreme-temps-upped-reliability" target="_blank">here </a>on a new line of SD cards from SanDisk targeted to the harsh conditions of automotive and industrial applications.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-11362663072684857822017-09-25T08:28:00.004-07:002017-09-25T08:28:41.293-07:00Report on GPS SpoofingBruce Schneier reports <a href="https://www.schneier.com/blog/archives/2017/09/gps_spoofing_at.html" target="_blank">here </a>on apparent incidents of GPS spoofing. GPS spoofing creates concerns for both safety and security.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-19810844799288689562017-09-14T04:58:00.002-07:002017-09-14T04:58:59.285-07:00New Bluetooth VulnerabilityExtremetech reports <a href="https://www.extremetech.com/mobile/255752-new-blueborne-bluetooth-malware-affects-billions-devices-requires-no-pairing" target="_blank">here </a>on a new Bluetooth vulnerability. This vulnerability does not require pairing and can be exploited under a wide variety of conditions. It provides a serious breach, for example bridging air gaps.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-91924728265949986122017-09-07T08:40:00.003-07:002017-09-07T08:40:45.074-07:00Qualcomm V2X ChipExtremetech reports <a href="https://www.extremetech.com/extreme/254969-qualcomm-building-vehicle-everything-comms-chip-safer-cars" target="_blank">here </a>on a new cellular-based vehicle-to-everything chip from Qualcomm.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-54994138443544007282017-09-07T08:39:00.001-07:002017-09-07T08:39:35.301-07:00Symantec Report on Attacks on Energy CompaniesTom's Hardware reports <a href="http://www.tomshardware.com/news/symantec-dragonfly-cyberattack-energy-companies,35394.html" target="_blank">here </a>on information-gathering attacks on energy companies in the U. S., Turkey, and Switzerland. It attributes these attacks to Dragonfly.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-56442729665869939042017-08-23T13:40:00.002-07:002017-08-23T13:40:30.193-07:00Sonos Changes Its Privacy PolicyExtremetech reports <a href="https://www.extremetech.com/electronics/254561-sonos-accept-new-privacy-policy-well-brick-device" target="_blank">here </a>on changes by Sonos to the privacy policy for its wireless home audio devices.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-37529048585040480722017-08-18T13:22:00.000-07:002017-08-18T13:22:05.125-07:00Hacker Attack on New York HospitalCBS News reports <a href="https://www.cbsnews.com/news/cbsn-on-assignment-hackers-targeting-medical-industry-hospitals/" target="_blank">here </a>on an attack on Erie County Medical Center which disabled the trauma center's computer system for six weeks.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-33227080551798948912017-08-17T10:54:00.004-07:002017-08-17T10:54:55.275-07:00Report on Pulse Wave DDoS AttacksTomshardware reports <a href="http://www.tomshardware.com/news/imperva-pulse-wave-ddos-attacks,35243.html" target="_blank">here </a>on a new type of distributed denial-of-service attack known as a pulse wave. The attack pattern consists of alternating bursts of traffic and inactivity. This style of attack has several advantages: it requires fewer resources and allows the attacker to target multiple sites; it is effective against appliance first/cloud second mitigation techniques.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-8956575670741430082017-08-11T18:16:00.001-07:002017-08-11T18:16:21.174-07:00Happy Birthday, IBM PCToday marks the 36th anniversary of the introduction of the IBM Personal Computer. You can read the Wikipedia article <a href="https://en.wikipedia.org/wiki/IBM_Personal_Computer" target="_blank">here</a>. Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-70669231344695392422017-08-11T02:17:00.000-07:002017-08-11T18:15:20.764-07:00Fifth Anniversary of Mars RoverA belated happy fifth anniversary to the Mars Rover. Extremetech gives a report on Rover's five years <a href="https://www.extremetech.com/extreme/253771-nasa-celebrates-five-years-curiosity-new-rover-video" target="_blank">here</a>.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-39139468885526953282017-08-04T16:28:00.001-07:002017-08-04T16:29:08.332-07:00U. S. Army Discontinues use of DJI equipmentAs reported by sUAS News <a href="https://www.suasnews.com/2017/08/us-army-calls-units-discontinue-use-dji-equipment/" target="_blank">here</a>, the U. S. Army has directed its units to cease use of DJI drones.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-88935737842822974822017-08-04T12:58:00.001-07:002017-08-04T12:58:34.209-07:00Samsung Battery Testing ProcessSamsung describes <a href="http://www.samsung.com/us/explore/committed-to-quality/" target="_blank">here </a>its battery testing process.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-15398573076312744302017-08-03T15:43:00.003-07:002017-08-03T15:43:55.944-07:00Today in History: The TRS-80Forty years ago today, August 3, 1977, Radio Shack introduced the <a href="https://www.bing.com/search?q=trs+80&FORM=OTDHYL" target="_blank">TRS-80 Micro Computer System</a>. Hats off to a classic.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-88286545593192108982017-08-01T16:45:00.000-07:002017-08-01T16:48:14.106-07:00TurboencabulatorThe AFRL S5 Symposium has given me the opportunity to learn about recent work in safety and security as well as autonomy. It also offered a discussion of the turboencabulator. You can read about it at the Wikipedia page <a href="https://en.wikipedia.org/wiki/Turboencabulator" target="_blank">here</a>; also be sure to watch <a href="https://www.youtube.com/watch?v=Ac7G7xOG2Ag" target="_blank">this </a>first video on the turboencabulator as well as <a href="https://www.youtube.com/watch?v=MXW0bx_Ooq4" target="_blank">this </a>very informative video.Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0tag:blogger.com,1999:blog-8290672267945459369.post-13226379149467299862017-08-01T16:43:00.001-07:002017-08-01T16:43:12.806-07:00Aviation Software<div class="separator" style="clear: both; text-align: center;">
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This is a screenshot of the entertainment system rebooting at the start of a recent flight. Guess what OS they run?<br />
<br />Anonymoushttp://www.blogger.com/profile/07139196591215180536noreply@blogger.com0