November 22, 200421 yr Greeting AllI'm "trying" to build a radio stack for my sim using an application specific implementation of FSBus. I've made what I'll call a "mother-board" with a COMM III, FSKEY3 and FSLED "all-in-one". This should give me everything I need for 2 NAV/COM's, Transponder, ADF and Audio panel.I'm running the Windows version of FSBus and so far I've been successful in programming the encoder's through the FSKEY3 to change the NAV/COM frequencies in FS2002. My problem arises when I try to flash the PIC's for the display's!!!! They "seem" to flash OK , as I can read the PIC after flashing and the first number comes back as 3005 (I am using CID#5 for the COM 1 display and the display modules are common anode). It comes up all "dashes" (segment "g") as can be seen in the picture. Everything checks-out OK in trouble shooting mode on pin's 4, 12 and 13.Has anyone come across this kind of problem?? Is there a known bug in the window's version of FSBus?? Anyone have any guesses as to what might be going on here??? PLEASE
November 22, 200421 yr The displays when first started will come up with the dashes, so I'm not sure what the problem is.Someone said that there was a problem with ca, but as I've used common cathode on mine, I haven't had the problem.Try the display test to see if the numbers change, remembering to make sure that you select the correct cid in the test cycle.Other problems can be the cabling from the computer to the board, as you can't use conventional cabling without mmodification.hope this helps a little.Laurence Merrainehttp://www.nzdragons.com/cockpit
November 22, 200421 yr Hi LaurenceThanks for responding!!! I found my problem. I started to monitor the pins of the MAX232 and found that my Rx signal (pin 12) was only about 1.5V. My PCB uses SMT components and I have .008" traces with .012" spaces in certain areas. Apparently the flux in the solder I was using is slightly conductive and was loading down that signal. A good cleaning of the PCB solved the problem and all is well now. The last digit doesn't light in any of the displays, but I've been led to believe that that is a legitimate bug with common anode displays.RegardsGus
November 22, 200421 yr Glad I could help - looks like an interesting project.Laurence Merrainehttp://www.nzdragons.com/cockpit
November 22, 200421 yr Did you use a cnc to make your modified board? I agree, looks interesting.David
November 23, 200421 yr I did the layout in PADS software and had them make it at work on a PCB routing machine (I believe the machine if from a company in Germany). For the tin plating I used a product called "Tin-It", see thread http://forums.avsim.net/dcboard.php?az=sho...mode=full#13902Gus
November 24, 200421 yr Here is another product that I have used to tin PCB's that works very well, and is available around the world.http://www.mgchemicals.com/products/421.htmlGus
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