REDec09b Problems

[Guest Raafie75]

Can anyone help with problems that I'm having with REDec?I've just built myself a REDec and seem to be having some eratic problems. I've hooked a standard Rotary Encoder which has opposite outputs on each side pins. 5V connected to center pin and I'm getting the required voltage at each Logic IC.The output I'm getting in the FSBUS Key testing page is its flipping between the two points it occupies. As I turn it in one direction I start to get a 1 to 0, back and forward but after about 5 clicks in the same direction it with suddenly change to the other switch output.Does anyone have any clues to what is going wrong?I have built this thing from the schematic but unfortunately there seems to be no English intructions for this device. Would anybody have a translation?Yours Sincerely,

[Guest Glenn Weston]

G'day Brad good to see you're making progress mate, Just thought I would mention that there was a bug in FSBus where you had to use the first set of pins in a Row ID for a rotary type 2, like the knitter or the REDec, have you downloaded the latest release it is supposed to be fixed now but I have not tested it, just in case that is the problem & not the new REDec that you have built, try the Knitter I sent you first, make sure that is working correctly & then connect the REDec to those pins & see how you go.Cheers Glenn.

[Guest Raafie75]

Hey Glenn, Yeah I've downloaded the latest version of FSBUS and have tried the knitter switch and that works fine. Just can't get the REDec to work?Brad.

[Guest Mathew]

Hi Brad and Glenn,there seems to be a bug in the absolute LATEST version using the REDEC....It worked in the previous versions - but not in 2.0.4 any more...Mathias

[Guest Raafie75]

Thanks Mathias,I'll try a previous version to see if the circuit actually works.Does Dirk know about this problem?Brad.

[Guest Raafie75]

Guys I just tried loading my FSBUS back to 2.0.0.2 and its still having the same problems?Maybe I'll need to get some of these knitter switches but unfortunately we can't get them here in Australia?Can anyone help with this problem?Regards,Brad.

[oal331]

Hi Mathias,This is a very serious problem :-bluegrabHave you also such a problem??I hope to find free time to test it tonight with FsBus 2.0.4.Do you have any news from Dirk about it??Eddie ArmaosAthens-Greece

[Guest GeorgeDorkofikis]

Never had a problem with REDEC with any of the FSBUS2 versions.It works great and the only problem is/was (don't know yet) the bug where any subsequent rotary2 encoders were not working properly unless connected to the 1st SubID or each row. I think Dirk is working on this one.What kind of rotary are you using? Can you give us a specific model or part nr ?George DorkofikisAthens, Greece

[Guest Mathew]

Hi now i think i know what your problem is - 2.0.4 does NOT support the REDEC with rotarys - it has a BUG !!!!Dirk has released 2.0.5 for a fix - i have NOT tested it yet but it should be OK.I am in continuos contact with Dirk to get those errors fixed.So please try the 2.0.5i have been using 2.0.2 with NO problems at all.Honestly - i have got my complete 737 setup working with FSBUS - its only minor things i have not yet tried.If you do not come along please send me a mail - we can always exchange the router settings or things like thatMathias

[Guest Raafie75]

Hi Guys,I downloaded 2.0.5.1 and still the same problem. It looks like hardware because it does exactly the same thing in every version.I have attached a info sheet that I got from the local retailer that sold the rotary encoder. Hope this might help to see if I'm actually using the right rotary.Regards,

[Guest GeorgeDorkofikis]

From what I can see from the specs it make a false statement for starts. The rotary (as seen from the pulse diagram) outputs 15 pulses per rotation and not 30 as it states. I think they also count the shifted pulses too to give the wrong impression. So you actually get 1 pulse per 2 detents.There is a problem when using 30/15 rotaries, but as I understand that's not your problem. It must be something wrong in the implementation of the REDEC circuit. Did you make the PCB that comes in the PDF? Did you mirror it first? Maybe it's printed the other way around. Look at the board from the component side. It should exactly match the drawing in the PDF. I had that problem in my first tests until I figure out what's wrong. Also, in the FSBUS2 you have to define the rotary as 'Conrad Rotary Encoder' type. FSBUS will warn you that you need extra hardware for that, just press ok. Check and try the latter first. If this doesn't work, check the circuit or make a new one. Also make sure that you have used the correct components and that the voltage to the REDEC circuit is stabilized 4.8V or more. For the tests you can get your power from the middle (Gnd) and right pins (5V) of the 7805 IC on the FSBUS COMM3 board. That will give you a nice stabilized voltage for your tests. In you implementation later you can use (or build you own!) stabilized 5V power supply.Let us know how it goes and we're here to help.George DorkofikisAthens, Greece

[Guest Raafie75]

Hi George,Thanks for your feedback!I've followed the schematic and built the ciruit from a Vero board. I'm getting a stable voltage from the 7805 off the COM III board. Where you having the same problem of the output flipping between the two inputs of the Key board?Its driving me crazy because I'm just about to build the Display board and we can't buy Knitter switchs in this country! I've tried everywhere!Can you tell me what BCD switchs are, mentioned in the version 2.0.5.1 of FSBUS?Kind Regards,

[Guest Glenn Weston]

Brad, Here is a link that shows what they call a truth table for a BCD switch...........The switch has 5 terminals one is marked common, the others are marked 1, 2, 4, 8. If you look at the truth table you will note that the switch counts up in binary, an excellent switch to talk to digital circuits, hence it's name, FSBus recognises these switches & they can only be used for the ADF & Transponder radio's I think. I have not played with a BCD switch yet, however I have one laying on the desk here, I will get to it eventually. The switch I have has a little lever that you can push up or down, It has a wheel on which the numbers 0-9 are displayed so it has 10 positions. The wheel just rotates around & around either way.You will probably find that in a real transponder radio, if you take a look at one, that they use BCD switches four of them, one for each digit on the radio, however they should only go 0-7 as the maximum transponder code one can set is 7 7 7 7Look at this link:http://www.datexusa.com/tallt.htmIt's the table on the far left.These switches would be very common at your work I would think.Regards Glenn.

[Guest Raafie75]

Thanks GlennHas anyone built the 12 terminal rotaries (shown in the FSBUS Manual) for the use of up and down functions?There shown as two built together on one terminal, is one for up and the other is for down or does one do both?Regards,