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allardjd last won the day on August 17

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About allardjd

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    John Allard
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  1. I'm posting this in an old thread because this is where it seems to fit best... Norway's first electric plane crash-lands on lake "The cause of the crash was not immediately clear..." "...police said the pilot and passenger both escaped unhurt." "...Alpha Electro G2 plane, produced by Slovenia’s Pipistrel…" https://www.reuters.com/article/us-norway-crash-idUSKCN1V423N?utm_campaign=trueAnthem%3A+Trending+Content&utm_content=5d548102a341320001ab088c&utm_medium=trueAnthem&utm_source=twitter John
  2. Does the shield use analog or PWM outputs from the Arduino? May be optional, with a jumper on the shield or some assignments within the Arduino code. I suspect the shield plugs into all the output pins on the Arduino, so there should be a way to use either analog or PWM outputs (but probably not the digital outputs) to drive the shield. The shield documentation and any included sample code should show how to do that. If I remember correctly, some of the Arduino analog outputs can be configured in the code for PWM. I can see how the Arduino code/board will drive the motor shield and how the motor shield outputs will apply analog voltages to the pins of the gauge, causing the needles to deflect. I guess you can use the control assignments within FS for trim inputs and that will affect the AC within FS, but how will those inputs within FS get to the Arduino to make the gauge follow your inputs? Also, autopilot will affect trim settings within FS so when set up properly, the gauge should reflect those when the autopilot is coupled. Should be a really interesting display. Which Arduino are you using? Uno? Mega? Other? John
  3. Short answer - no! You MAY if you want to and have money to burn, but you don't have to. John
  4. Interesting hardware. Thanks for posting. The relays for the warning panel look like overkill. It really doesn't require a relay to operate a lamp or LED, just a simple low-power transistor, which would have saved a ton of space in the aircraft. Understand it's older technology, but so are transistors now. They've been around for quite a lot longer than the Tornado has. Of course a lot of military hardware is designed on a cost plus basis, so if a contractor/vendor can justify a more costly approach he gets paid accordingly. Does that relay rack go inside the warning display box? There must be a lot of wires connecting to that in the aircraft. Trim gauge is pretty neat. Please post as you get it working from the Arduino. I guess the gauge "needles" can be thought of as simple voltmeters, displacing in proportion to the negative or positive voltage applied. Probably not how it would be done if designed today but simple and reliable and accurate enough for that particular application. Is the knob in the center of the gear indictor lights just for adjusting brightness? Great looking gear anyway. Where did you manage to find this kind of thing for sale? John
  5. I hope they don't re-hire Josh Howard, the Baghdad Bob of MS-(F)Light. John
  6. Yes, I'd like to see your progress on this, including photos if you can. That Arduino stuff is really magic and there are all kinds of add-on shields and sensors and actuators available that are made to work with it. You're only limited by your ingenuity with this stuff, and of course your budget. Most of it is pretty cheap, however. How are you tying your real world devices back to FS? John
  7. Another - $6.99 on Amazon https://www.amazon.com/Qunqi-L293D-Shield-Arduino-Duemilanove/dp/B014KN2898/ref=sr_1_3?keywords=arduino+servo+shield+12v+output&qid=1565135208&s=gateway&sr=8-3 Pretty sure the best answer is an Arduino motor or servo driver shield plugged into the top of your Arduino with an add-on 12 V power supply. Be sure the board you get has input pins for a remote power supply of >= 12V. I saw one that was only good for 10V and 600 mA, so not all of them will work. You should probably tie the Ardino and external power supply negatives together, though the shield might be hard-wired to do that for you. You could also do this with discrete components built around a power transistor or an op amp, but it would take a lot of fooling around and the Arduino & shields solution takes a lot of the work out of it and provides a lot of built-in functionality and protections. Calibration would be fiddly, no doubt and being able to tweak that easily in the Arduino code/script/sketch would make that much easier than trying to do it with pots, trimmers, etc. John
  8. This Arduino shield looks like it can do the same thing, but is intended for lower current loads than the one above - probably fine for what you have in mind. Note that it's pretty cheap - $7.95 USD. You'd still need a 12 V power supply from somewhere other than the Arduino board. https://www.amazon.com/DEVMO-Shield-Expansion-Arduino-Duemilanove/dp/B07S39BCZ6/ref=sr_1_2_sspa?crid=2A0NEUMTA9EZW&keywords=arduino+motor+shield&qid=1565134812&s=gateway&sprefix=arduino+motor+shield%2Caps%2C163&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExUlMzVUFaQzYxNk1YJmVuY3J5cHRlZElkPUEwODU2NTU3MURNNDI4QVBEN0ZQQiZlbmNyeXB0ZWRBZElkPUEwNjA4ODg2MVBLQTZTNUVIWkhTVSZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU= Thinking about it some more, your application is more like a servo than a conventional motor. John
  9. This looks like it should do it. You'll need the MegaMoto Shield for your Arduino, an external 12V power supply and some Arduino code. The Arduino uses the PWM pin(s) to control the shield which controls the output from the 12V to the load(s). I don't think it would matter that your load is not a motor. https://forum.arduino.cc/index.php?topic=434078.0 Post #6 says this... - - - - - - - - - - - - - Hello, maybe it's a bit "overpowered" but a very easy-to-use solution for your problem: MegaMoto Motor Shield http://www.robotpower.com/products/MegaMoto_info.html The shield provides a full H-bridge or a double half-bridge functionality, with PWM control (0...100% in both directions) and also current feedback to the analog pins. I am using this for a couple of months now to control very high loads (12V, 10-15A). Works pretty fine! Also the current feedback seems to be quite accurate. All you need is an external power supply, which delivers 12V and the necessary amps. With this you just use the 5V (or 3.3V) pins of your Arduino to control the shield, but not for powering the motor. In principle, the shield simply opens and closes the line between your motor and your power supply. Regards and good luck! - - - - - - - - - - - - -
  10. I pulled together a comparison with the best data I could find. I'm pretty sure thrust does not necessarily equate to noise levels in a linear fashion but it's all I had. Decibel levels are logarithmic, further muddying the waters; twice the sound energy is not perceived as twice as loud. I suspect exhaust plumbing/duct configuration across different AC might be a factor too. By this, the Thunderbirds 4-ship should be the loudest by a fair margin, Having only experienced the first three in the table personally, at different times and probably with various levels of progressive hearing loss over the years, I have to say that my PERCEPTION of the sound levels does not line up with this very well. Fat Albert taking off on rocket bottles is a different animal altogether and there's really no basis for comparison with the others except by actually measuring decibel levels in the real world. It's not in the table below - apples and oranges. Thunderbirds 4-ship - F-16 - P&W F100 @ 29,160 lbf (X 4 AC) = 116,400 lbf Blue Angels 4-ship - FA-18A - GE F404 @ 11,000 lbf (X 2 per AC) (X 4 AC) = 88,000 lbf B-1B - GE F101 @ 17,390 lbf (X 4 per AC) - 69,560 lbf Vulcan - Olympus 202 @ 17,000 lbf (X 4 per AC) = 68,000 lbf English Electric Lightning - Avon 301R @ 12,530 lbf (X 2 per AC) = 25,060 lbf John
  11. 8/2-5/19 Bundle Updates The monthly update of the Airport Diagram bundle files has been completed. Bundle downloads are available here... https://mutleyshangar.com/forum/index.php?/topic/23067-airport-diagram-download-center/ - - - - - - - - - - - - - - - - - - - - - - - - - - Update Details - - - - - - Angola - 1 added FNMA Malange - Malange, Angola Argentina - 1 added SAZO Necochea - Necochea, Argentina Australia - Northern Territory - 1 updated YPDN Darwin Intl - Darwin, Northern Territory - Australia (updated)(was 2 plates; now 1) Australia - Victoria - 1 updated YMML Melbourne Intl - Melbourne, Victoria - Australia (updated) Bangladesh - 1 updated VGEG Shah Amanat Intl - Chittagong, Bangladesh (updated) Brazil - 1 added SNOY Ouricuri - Ouricuri, Brazil Czech Republic - 1 added LKJH Jindrichuv Hradec - Jindrichuv Hradec, Czech Republic Denmark - 1 added EKSN Sindal - Sindal, Denmark Finland - 1 added EFLA Vesivehmaa - Lahti, Finland Gabon - 1 added FOGB Booue - Booue, Gabon Greece - 1 updated LGKR Ioannis Kapodistrias - Kerkira, Greece (updated) Hong Kong SAR - 1 added VHSK Sek Kong - Sek Kong, Hong Kong SAR India - 1 updated VECC Netaji Subhash Chandra Bose In - Kolkata, India (updated)(was 2 plates; now 1) Iraq - 1 added ORBM Mosul - Mosul, Iraq Israel - 1 added; 1 updated LL1B Arad - Arad, Israel LLBG Ben Gurion - Tel Aviv, Israel (updated)(was 2 plates; now 1) Japan - 5 added RJCM Memanbetsu - Memanbetsu, Japan RJCN Nakashibetsu - Nakashibetsu, Japan RJSC Yamagata - Yamagata, Japan RJSF Fukushima - Fukushima, Japan RJSY Shonai - Shonai, Japan Madagascar - 1 added FMNZ Ampampamena - Ampampamena, Madagascar Myanmar - 1 added; 1 updated VYBG Bagan - Bagan, Myanmar VYYY Yangon Intl - Yangon, Myanmar (updated) Pakistan - 1 added OPMK Mirpur Khas North - Mirpur Khas, Pakistan Sudan - 1 updated HSSS Khartoum - Khartoum, Sudan (updated) Sweden - 2 added ESFQ Kosta AB - Kosta, Sweden ESNK Kramfors-Solleftea AB - Kramfors-Solleftea, Sweden Tajikistan - 1 added UT46 Parkhar South - Parkhar South, Tajikistan Thailand - 1 updated VTBD Bangkok Intl - Bangkok, Thailand (updated)(3 plates) Tunisia - 1 updated DTTA Carthage - Tunis, Tunisia (updated) United Arab Emirates - 1 added OM10 Yas Island - Yas Island, United Arab Emirates US - Alaska - 3 added 4K2 Morvro Lake - Houston, Alaska - US 62AK Wallis Lake Spb - Wasilla, Alaska - US KKL Karluk Lake - Karluk Lake, Alaska - US US - California - 1 added O42 Woodlake - Woodlake, California - US US - Florida - 1 added 17FA Cotton Strip - La Belle, Florida - US US - Illinois - 2 added IL48 Lunn - Byron, Illinois - US KLOT Lewis University - Chicago/Romeoville, Illinois - US US - Indiana - 2 added IN59 Jerry W. Humphrey - Newburgh, Indiana - US KJVY Clark Co - Jeffersonville, Indiana - US US - Iowa - 1 added C25 Waverly Mun - Waverly, Iowa - US US - Kansas - 2 added KANY Anthony Mun - Anthony, Kansas - US KLYO Lyons-Rice Co Mun - Lyons, Kansas - US US - Maine - 2 added ME28 Forest Lake - Cumberland, Maine - US ME67 Morrill Airpark - Van Buren, Maine - US US - Maryland - 1 added 1C4 Raintree - Elkton, Maryland - US US - Michigan - 3 added 6H4 Day - Napoleon, Michigan - US 83D Mackinac Co - St Ignace, Michigan - US KPZQ Presque Isle Co - Rogers City, Michigan - US US - Minnesota - 3 added 0MN0 Winner's Landing - St Paul Park, Minnesota - US 12Y Le Sueur Mun - Le Sueur, Minnesota - US KBDE Baudette Intl - Baudette, Minnesota - US US - Mississippi - 1 added 09M Charleston Mun - Charleston, Mississippi - US US - Missouri - 2 added 9K4 Skyhaven - Warrensburg, Missouri - US M12 Steele Mun - Steele, Missouri - US US - Ohio - 1 added KPHD Clever - New Philadelphia, Ohio - US US - Pennsylvania - 1 added 8N1 Grimes - Bethel, Pennsylvania - US US - South Carolina - 1 added 88J Allendale Co - Allendale, South Carolina - US US - South Dakota - 1 added KLEM Lemmon Mun - Lemmon, South Dakota - US US - Tennessee - 1 updated KSCX Scott Mun - Oneida, Tennessee - US (updated) US - Texas - 2 added 3TA0 Four Square Ranch - Rocksprings, Texas - US 8F4 Foard Co - Crowell, Texas - US Zambia - 1 added - FLSN Senanga - Senanga, Zambia Water Runway Airports - 10 added 0MN0 Winner's Landing - St Paul Park, Minnesota - US 17FA Cotton Strip - La Belle, Florida - US 1C4 Raintree - Elkton, Maryland - US 4K2 Morvro Lake - Houston, Alaska - US 62AK Wallis Lake Spb - Wasilla, Alaska - US IL48 Lunn - Byron, Illinois - US IN59 Jerry W. Humphrey - Newburgh, Indiana - US KBDE Baudette Intl - Baudette, Minnesota - US KKL Karluk Lake - Karluk Lake, Alaska - US ME28 Forest Lake - Cumberland, Maine - US - - - - - - - - - - - - - - - - - - - - - - - Prior Updates: 7/2-5/19 New Bundles: 0 Updated Bundles: 45 New Diagrams: 53 Updated Diagrams: 11
  13. I think the difference is probably rule-based. Some US military pilots were disciplined some time ago for busting minimums on a sports stadium flyover that looked pretty modest. I think the brass hats keep the demo teams on a fairly short leash. I've seen the Blue Angels and Thunderbirds any number of times and also single ship demos of F-15 and F-14 (back in the day) and A-10, maybe some others I don't remember. Of all of them, the F-14 put on the best show but, a) it was about 1982, I think, so different rules, and b) it was a clear, cloudless day with no ceiling. Most of the other demos I've seen had some level of ceiling or at least scattered clouds that probably constrained what they could do somewhat. My perceptions of... - Loudest air show event - Blue Angels C-130 Fat Albert doing a JATO/RATO takeoff. - Loudest air show take-off/flyover - B1 Lancer, going at the speed of heat (Six Blue Angels FA-18s a close second - twice as many engines as the Thunderbirds doing the same thing in F-16s) - Loudest sustained airshow event - Harrier in hover If you really pay attention, the pre-main event for the Blue Angels is a demo of Fat Albert by her USMC crew and they REALLY horse that thing around, including steep bank turns at about 1-1/2 wingspans from terra firma, short field landings and takeoffs, backing up on the ground, etc. It's just a warm-up for the FA-18s but they put on a pretty good show. Of course, they're probably very lightly loaded when they do that, but still pretty impressive. Haven't seen any demos by non-US military pilots except the Canadian Snowbirds, a long time ago. Very precise and artistic, as I recall, but the aircraft they fly are not in the same performance category with 3rd and 4th generation fighter types. An observation about the big name demo teams and something probably overlooked by most - in a typical show they do a number of routines that end up with four (or sometimes six) aircraft heading off in different directions at high speed, sometimes at different altitudes and attitudes. Despite that, in 45 seconds, they're all back together, at the same speed and altitude, pointed in the same direction, positioned for the run-in to the field for the next maneuver. That's a hell of a lot more difficult than most people realize and speaks to hours and hours of planning and practice. All the teams I've seen seem do it equally well. John
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