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NexGen Flight Simuator

151 posts
It seems like the best intentions go by the wayside. If there was not enough turmoil in my life my hosting company whose tech support is based in the UK is the worst.  So I have decided to bring the server back home. I now only have till the end of June 2020, which leaves me about 15 days With short on time and working video cards, my friend Steve is to put them on one or two Rasberry Pie 4, with a SATA drive to hold the OS. The current server is running Apache (Web Server), Perl, and MySQ ...
Oh well, after hooking up my 4x20 LCD (that was held over from the Beagle Bone AI project, that I could never get to work) it still failed on my Arduino Mega. I ordered one, off eBay. The first thing I  did was to run the test program. Vola it worked. The next piece of business was to get a formatted text to the display. Now as we all know Arduino does not support the C library function printf, which will sends formatted text to the console. Using printf is straight forward with these conve ...
Well in my unpacking I came across this old piece of history, a one-inch diameter  Magnesian. It was made g-d knows when. This device has only four pins, which threw me for a loop. I did not understand how it worked until I found figure 2. Normally a Synchro is a five lead device where you have three leads for the Stator and two leads for the rotor, on which power is applied.  What they did is like a one-cheek-sneak. They still have power across the Rotor at pins A&B. But the third ...
Ok I'm back at it repairing stuff, the inner and outer front panels have been pressed and pounded on and then the aluminum outer panel got some new gray paint.  I have also replaced the cheap binding posts in favor of some surplus Pamona posts. The meter is another long story. My meter was a 188111LCLC made by GE. As it turns out Yokogawa purchased them and then sold them to WEI. They also have manufacture  AB/DB Switchboard meters, Simpson and Yokogawa as well as Beede, Crompton, Modu ...
Ok, this will be a new series of blogs taking you and me from sending a CAN message between two Arduinos. First without interrupts on the receiver and then with. Then with the same hardware, I will send a proper formatted CANaerospace message. CAN and CANaerospace are almost the same. They are both democratic networks which means that any node can transmit to other nodes, hence there is no master-slave relationship.  While most of the demos show a master and a slave. The circuit below is a ...
Well, here I am again, with the big question: How does the computer talk to the slaves (Arduino Megas. I have gone through USB (major problems), NASA Edin Lite via RS485 (but it has a small packet size). Then I thought of Ethernet (too costly per node) and then I thought of CAN bus, it has an 8-Bit payload, and in some respects it is extensible it is used in automotive, machine tools, and aircraft. Enter CANaerospace (Open Source) has been codified by ARINC 825, both Airbus and Boeing have adop ...
All is now well most of my noise was coming from two sources. Power bridge needed resoldering! Scope probe not grounded! It is now all buttoned up and on the shelf! Here are some pictures. Test Setup Sine Wave Square Wave Triangle Wave ...
THEN NOW Well, I have this unit on the repair shelf for a since 2015/07/22 So after much sawing and filing I got the NEMA socket to fit in the damn hole. In hindsight, I am glad I used the spade lugs! I then use a Molex type plug set with some wire on it so that I can work on the unit while the back is off. I also replaced the 600ohm solid wire with stranded wires as well. The 50ohm  cable is not grounded at the circuit board but only at the connector, to reduce ground loops   Goo ...
THEN NOW   Black (Hot) and White (Neutral) ended up switched so 110 VAC ended up on my ground-plane! Push on connectors are a must! I replaced the bridge with 4 100vdc 5 amp monsters.  It took quite a bit of heat to solder the big leads so I sub in an IR bridge  12DB6A I have a lot of harmonics to fix. The function generator parts still work. that is to say triangle, sine and square wave are ok just with harmonics. Most likely killed some caps!   PROBLEM DEAD DIODES ...
I have to warn you this fix is not for the faint of heart! My Hp 3330 laserjet has been pushing paper for me for almost 20 years, without problems aside from every once in awhile changing the toner cartridge. About a week ago it would sit there making funny noises a the display stated Scanner Warmup. So I unplugged the printer and plugged it back in with the same results. Since this is my only B&W printer I had two choices 1)  Buy a new printer (can't afford it), 2) use my Bother Colo ...
The factor keyboard was set up for scanning. I intend to fire off an interrupt when a key is pressed. This breaks my rule number 1: Do No Harm to the Equipment! But this piece of gear has been stripped before I got them. ( I have three of them. Good for spares!) ANALYSIS: The switches are a To turn this keyboard into an interrupt based keypad from a keypad is run by scanning. You first have to remove all the scan lines. Then you can run a logic ground to each switch (daisy-chained). Next, I have ...
Design: As an aircraft flies overhead, it receives radio signals in a 360 degrees circle around the aircraft. So these radio stations must be placed into a database, which contains the address of the main Db. This database must be updated every fifteen minutes or so, for an aircraft doing 100mph. The following things will happen if the selected frequency is in the range: Your RMI flag will now turn off (means it's good). Your RMI will display TO or FROM. Your RMI needles will now the steerin ...
Ok, am I a little harsh, maybe, but when you have a keyboard that you don't use very much, just think of the wasted CPU cycles scanning the Keyboard! I one minute, in one hour? So what to do? In steps our 8 input to 3-line, Priority Encoder TI SN74x148. A0 A1 A3 = GS H H H 0 H 0 0 1 4 L Table 1   Ok, you ask what is a Priority Encoder? Put it simply it is a device that will generate the proper output for any given key. Without a keypress, the encoder's output is 0.(update #2)  So let's ...
Well, pigs fly! And I straightened both the back panel and the front panel. But alas I have miss laid the finished front trim panel.  So I'm going to resemble it without the outer front panel, and then do it all over again when I find the damn outer panel. So here goes. All of the labels have been lost strayed or stolen.  So this will be done in the blind! And of course, there will be lots of pictures. The ammeter works, but it will need a new scale, about 20 to 40 bucks and a new jew ...
Well, here we are again, the MAX6955 went down in flames as it will only work on LEDs. So we have to start over. The Analysis: The NCD is comprised of 4 groups: Display, Keyboard, Rotary Switches, and Thumb Wheel Switches.  The Display is comprised of 4 16-segment and 13 7-segment PinLite lamps, and two LEDs.  The keyboard is comprised of a 10 key number pad and 4 special keys, it also encodes A-Z. There are two rotary switches, and two thumbwheel switches as well. I also found a user ...