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NexGen Flight Simuator

192 posts
In this Blog Post, I will carry on with phase I of testing. This consists of four (4) components. The radio head itself, which has not been modified. The Custom Cable consists of 2 DB-25m connected to 3 ARINC connectors. The RSS C-3436A interface. And lastly, a python script running on my Linux box to talk to the radio head via a USB cable just for testing. The testing will have several major objectives: The out of frequency indexes for MHz and KHz are working. Make sure that I can retrieve t ...
Well here I am again after taking a new (very old) look at the code base (2016) which had been lost, but nothing is really never lost on the Internet. I found my old code at Hackster.io and took a look at it. What I had done was to weigh each of the bits, in binary and then deliver an integer representation of the bits: int temp = (  frac[0] + ( frac[1]*2) + ( frac[2]) + ( frac[3]*8) + ( frac[4]*16)); My code base is not finished but at the very least now I have no errors in the IDE. Now t ...
I have been fighting with the Arduino for the last  few years. this time I wanted to simplify my code base by using a struct in my header file: // typdef struct frequency {   int bits[20][5] = {{1,1,0,0,1},{1,1,0,0,0},{1,1,1,0,0},{1,0,0,0,1},{1,1,1,1,0},                   {0,0,0,1,0},{0,1,1,1,1},{0,0,1,0,0},{1,0,1,1,1},{0,1,0,0,0},            & ...
Warner Brothers© So, before I waste some more of my time, I have decided to test the frequency selector pin-outs on P1. So what I decided was to put 5 LEDs on some perf-board with their resistors. Then connect them to the P1 (H-L and then (N-R) with wires between them run P1 (S) to ground, the LEDs to +5vdc, turn the dial on the radio, and see what happens in other words, I don't know if I can trust myself.  The results will be in the table below. Well, I wasted yesterday trying to re ...
Power Jack Wiring PIn Voltage 1 5vdc+ 2 NA 3 GND 4 12vdc+ 5 24vdc+ Well, here I am again, what is this the third time? I last took this up in the blog Nexgen: CANaerospace: RSS: C-3436A Radio: Build i. So this is part II of the build, covering the hardware, 2x RS232 cutouts, securing the CAN interface, as well as the relay for the panel lights. I will also wire the DIN-5 power connector to the rear of the unit. Signal Mega Pins Module MSO 50 so MSi 51 si CLK 52 sclk SS 53 cs INT 21 int Also, p ...
Ok, the Keyboard, is comprised of 3 columns, the two outer columns have 5 switches each, and the center column has 4 switches. The switches are all lights.  Pins 1 are white, are lamp Ground, pin 8, gray are lamp power. One side of switch is jumpered together, pins 3 & 4, and there  is a black  wire attached as well, which makes this switch effectively a SPDT switch. KBD TGT 1 2 3 4 5 6 7 8 9 CLR 0 ENT If you look down at the switch and hold the jumper (pins 1 and 2 ) on th ...
They claim and I quote "Loose Batteries can touch and lose power" are they nuts? This claim is about 1 minute in. Did the world of physics or electronics change??  In the words of PT Barnum "There's a sucker born every minute"         ...
Ok, First Remove the Three (3) Knobs. Next, Remove the Filter lens which has six (6) Allen screws (in Red). Now remove the five (5) screws (in Green) from the light plate itself. Next Insert s plastic kitchen knife and very gently pry the plate off as there is a power connector built-in. Now using a 9/16" nut driver remove the two rotary switches nuts, push them through and replace the hardware so you don't lose them. Also use a 9/8" nut driver to loosen the dimmer nut. Next, there are 4 ...
phoenixcomm

MCU-128 Backpanel

Posted by phoenixcomm Top Member Jul 23, 2021
PROBLEM: I have been struggling to find a solution to a mess that has stopped me from doing much with this project. The interconnection is weird 0.025" square, on a 0.1" center. Nothing fits this dam thing to make matters worse there are no manufacture part numbers After being on the phone with AMP customer support and then he wants pictures, oh no. In my desperation, I called Samtec. SOLUTION: Guss what this damn thing is a standard connector. They are sending me a bunch of the little sobs. S ...
This is a how-to I build a typical node, this will show you my methodology. You will need to gather your goodies. In this case, I will need the following: ( this is a complication of the Info, Manufac, Category tables the only thing not included is the Quantity column.)   Product Name Quan My Part Number Manufacture Part Number Enclosure, Polycarb 1 104-00001-00 Nam Ngai Hong 605RS Arduino Mega 1 35-00002-00 Arduino Mega 256 R3 "    "  Mount 1 95-00001-00 Arvan Meg ...
I have talked about this radio back in the day. Please See NexGen Simulator Blog Index iii. You will see 13 prior entries. So why 14? This post is using my current schematic for the wiring which will do the decoding very straightforward.  The C-3426A schematics and pinouts are included in  TM 11-5826-215-35, "Field and Depot Maintenance Manual Receiving Set Radio AN/ARN-30D", (page 15). As you can see below the data from the head is from ARC-158115 (19pins) which is connected to DB25.1 ...
Ok, what is a protocol converter, and why do I need one? Well, a CANaerospace frame is defined as an 8-byte message with the first four (4) bytes comprising the header and the remaining four (4) bytes as Message Data which is type-specific (see diagrams). The codes for the header fields are listed in a book by NASA  AGATE data bus / Michael Stock Slight Systems, Interface Specifications for Airborne CAN Applications or a good overview in a slide show presentation. Since the two services ...
I have been down this road before but now I have the final solution. I found it in my old Motorola M6800 Applications Handbook, section 5-1.1.2 NonEncoded Keyboards. It used a PIA or Peripheral Interface Adapter, since I am using an Arduino I don't need the PIA.  But I will replace it with an I2C 16-bit I/O expander, MCP23017. As you can see I drive the data lines Data-0, 4 with a high. When there is no key closure nothing happens but if a key is pressed 1) the active line is seen on its co ...
I have been working on my C-3436A radio for quite a while after it worked I took it apart to install it in its new home and I could never get the damn thing to work again.  So with way too much time on my hands, I decided to ring out the damn cable once and for all.  Now I can report the job is done. KiCad helped me see my mistakes. This cable is really two cables each terminated with DB-25Ms at one end and ARC connectors at the other. One cable was just DB-25M to a 19 pin ARC connecto ...
Well, a lot of folks have written about the SN74HC595x as an 8-bit shift register. The major use is to expand ports in the Arduino. (image 1) This is the classic way to expand your Arduino for 8 more ports, without resorting  I2C or CANbus.  But what if you need 16-bits as I do? But as you can on the left see by connecting the QH' output of the first shift-register to SER input of the second shift register you can end up with a 16-bit shift register. By adding other shift-registers yo ...

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