Hi to allI want to expand my fsbus system now with fsdisplay. But I will use smaller 10mm 7 segm leds with another pin layout.So I studied the fsdisplay schematics and the pcb's to see what pin of the pic goes via what pin of the displaybus to what pin of the 7 segm led. I used the standard fsbus documentatiion for this.If I follow the K1-K5 lines from the pic to the displaybus (with the 16 pins) I notice that K5 of the schema (page 6 in the docs)goes to K1 on the displaybus (page 7 doc). K2 to K4, K3 is OK, K4 to K2, and finally K5 to K1. Besides that I saw that the first 2 pins (belonging to segment f and g) were switched in the schema, they must be ok on the pcb because you can check it with the pin layout of the used 7 segm leds.Can anybody say something on this.Dirk told me that there were some errors on this topic in the docs, but it will take some time for correction till the docs for fsbus2 will be released. Besides pcb for 5 7segm leds, I want to make pcb for 4 7 segm leds.Do I need K1 - K4 in that case? Or K2-K5, or does it matter at all?Is K1 the most left 7 segm led? (counted from the pcb side)regardsNorbert

I don't know if it helps, but I have made pcb's for a smaller 9,14mm 7 segment. I have layouts for both 3 and 5 of them,The 7 segments I use are no. 75-507-00 at www.elfa.se

JohanIt would certainly help if you could send the layout pf your pcb to me. Together with the datasheet of the 7 segm leds that you use, it could give me more help with adjusting the pcb to my own needs.Could you mail the files you made to:[email protected] for your help

Hello Norbert,1) K1 is atributed to the nearest 7-seg led of the 16 pins connector.2) I'm just finished to make PCBs for 3,4 and 5 (7.6mm) 7seg leds with another layout than given by the FSBus documents. I hope that the FSBus display rev 3.2 schematic dated 11/2002 shows an error concerning the connection of the pins f and g from 7seg leds to the 16 pins connector:- the pin f is connected to the pin 1 of the 16 pins connector instead of pin 2 given by the schematic- the pin g is connected to the pin 2 of the 16 pins connector instead of pin 1 given by the schematic.The connection to the PIC of pins f and g are ok, respectively 13 and 12.I will have my new Pcb next week and do some test with them.Christian

Hello Norbert,I'm sory, I make a mistake in my last message, f and g are inverted in the concerned schematic, we must read g(1) instead of f(2) and f(2) instead of g(1). Best RegardsChristian

Thanks Christian for your reply.If I look at my pcb schema, I see that K5 is the 7segm led nearest to the 16 pin bus. K1 is farest away.Besides that, following the K1-5 lines via the 16 pin bus to the pins of the pics gives me another result then written in the schema in the docs (page 6). I described that above. Cpuld you affirm this:The G segment is controlled bij pin 1 on the 16 pin bus, (pin 13 of the pic)The G segment is controlled bij pin 2(beside pin 1) on the 16 pin bus, (pin 12 of the pic).On the fsbus website is doc Rev 3.0 10/2002. Were did you get the newer one?regards Norbert

Hi Norbert,You can find the display schema rev 3.2 dated 11/2002 at the following adress:http://www.fsbus.de/classic/download.htmDownload the FSBUS-Display modul (fsdisp.zip)In the zip folder open the "fsdisp.gif" document and find the "newer" display schematic dated 11/2002.Please,tell me what are the differences between this schematic compared with yours.Regards Christian

Hi ChristianI now have the rev 3.2 schema, it was in the disp.zip package. I was using the rev3.0 general docs, it also contains a schema of the displays.The only difference are the brackets behind K0-K4 which indicate to which pin of the displaybus they are connected. (Dirk uses now K0-K4 instead of K1-K5I compared 3 things1: The layout of the pic on the schema; what goes to what line of the pic2: What is between the brackets on the schemalayout: for example K0 or K1 has 13 between barckets, meaning this goes to pin 13 of the displaybus.3: The pcb of the pc and of the 7segment leds.I noticed:There is something wrong with the K1-K5. On the schema 1 and 2 above fit with eachother, but only when there is a mistake on the pcb. The pcb in itself in OK but the explained layput beside the displaybus is wrong.For example. Lets look at K1(K0). It should be connected to pin 13 of the displaybus (according to the schema). Besides pin 13 is written K5 on the pcb layout . But when I look at the pcb of the controllerboard I see that pin 13 ofthe 16pinbus is connected to pin 3 of the pic and that is OK according to the schema. So I think the PCB is OK but the writing besides the 16 pin layout is wrong.K1 should be K5K2 should be K4K3 is rightK4 should be K2K5 should be K1If that is OK , then your comment that K1 is nearest the 16 pin bus makes sense to me.One remark on the f and g segment.g connects to pin 1 of the 16 pin busf connects to pin 2 of the 16 pin bus (this is obvious from the used hardware)PIC pin 13 connects to pin 1 of the 16 pin busPIC pin 12 connects to pin 2 of the 16 pin busso now follows:f segment goes to pic pin 12g segment goes to pic pin 13So according to this the pcb layout is OK , the writing besides the 16 pin layout is also OK, but here the fault is on the schemalayoutThere f(2) and g(1) are switched.I would be very thankful if anybody could confirm this. I have to now this to design my own pcb for my own 7segm leds.regardsNorbert http://forums.avsim.net/user_files/110685.jpghttp://forums.avsim.net/user_files/110686.jpg

Hello Norbert,I agree with your analysies, I experienced that the basic PCB display + 7 seg leds works perfectly as it is.Only the display schematic have a mistake (f and g are switched)and the writing besides the 16 pin layout is wrong.My 16 pin connector is wired as follow:1--2--3--4--5----6------7---8---9----10---11---12---13--14--15--16 g--f--b--a--K4--none--K5--dp--e---none--d---none--c---K1--K2--K3 solder side viewRegards Christian

Thanks ChristianCould it be that you made a little mistake?1--2--3--4--5----6----7---8---9----10---11---12---13--14--15--16g--f--b--a--K4--none--K5--dp--e---none--d---none--K1--c---K2--K3K1 and C are switched in your answerregards Norbert

Norbert,I have just finished to test the 3 7seg leds PCB given in the fsdisp.zip, it is wrong. The hundred and ten digits don't work, the unit digit shown the number which is normaly given by the hundred digit.I have modified the wiring of this PCB as I said in my last message, all work fine.Regards Christian

OK Norbert, I verifyK1 is connected to pin 13 of the 16 pin connector and c is connected to pin 14.I confirm.Regards Christian

ChristianThe PCB you show me that is wrong, has K3, K4 and K5. (it is the original from the docs)What you experience learns me is that with a 3 digit layout you will need K1 K2 and K3. So K4 and K5 do not do anything in this case.K3 is in your case on the far right (from the component view) but shows the hundred digit because it should be the most far away from the 16 pin. regardsNorbert

ChristianWhat you could do with your wrong pcb board for the 3 7 segm leds:use the software to multiplate with 1000, then it should work.Norbert

Not at all Norbert, the solution is to re-design a 3 7seg leds PCB in order to have a good indication without change of the multiplication number (it must stay at one).We have now found the good way to make a new 7seg leds PCB in accordance with a new 7seg leds layout.What else, as soon as possible, I will send to you (on the forum) the result of the test of my own 7seg leds PCBs, I will have the first tomorrow afternoon.RegardsChristian