mageek Posted December 5, 2018 Share Posted December 5, 2018 I have made 6 pin2dmd panels successfully and look great. I have now purchased more panels but they do not work. The specs say that they are synchronous panels where others I have purchased are async/sync. Am I out of luck with these? Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 7, 2018 Content Provider Share Posted December 7, 2018 Make some closeup pictures of the pcb where the writing on the SMD parts is readable Link to comment Share on other sites More sharing options...
mageek Posted December 7, 2018 Author Share Posted December 7, 2018 Thanks Lucky, Chips appear to be FM6124 , below is picture of board, working pin2dmd and same shield and controller on not working new panels. Also you will see missing capacitors cx4 and cx5 , vendor says they aren’t needed. Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 7, 2018 Content Provider Share Posted December 7, 2018 Which firmware version are you testing with ? Link to comment Share on other sites More sharing options...
mageek Posted December 7, 2018 Author Share Posted December 7, 2018 It is 2.58, stmf4 pcb and v1.4 shield Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 7, 2018 Content Provider Share Posted December 7, 2018 Please try 2.60. I used exactly the same panels in my Evo board. They should work. Link to comment Share on other sites More sharing options...
mageek Posted December 7, 2018 Author Share Posted December 7, 2018 Ok will do thanks Lucky Link to comment Share on other sites More sharing options...
mageek Posted December 7, 2018 Author Share Posted December 7, 2018 I have updated to 2.60, I can now make out some letters sometimes and I can switch palettes in the pin2dmd tool however green is blue and blue is green so these must be BRG panels ? What can we do to make them work? Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 8, 2018 Content Provider Share Posted December 8, 2018 Please make some pictures of the controller part and the wiring. From your first picture I can see that you use a very long ribbon cable. Please make the connections to the panel as short as possible. Link to comment Share on other sites More sharing options...
mageek Posted December 8, 2018 Author Share Posted December 8, 2018 Yes I have tried several different cables. I have found that if I touch PC6 (OE) or even touching the HUB 75 cable my body capacitance makes it become readable but not stable. You say you have the same panels, can you verify for me that cx4 and cx5 capacitors are missing from your panels as well, vendor says they aren't needed but maybe in our application they are. Thanks Link to comment Share on other sites More sharing options...
mageek Posted December 8, 2018 Author Share Posted December 8, 2018 Ok I have now tried panels in working Pinball and it shows that if the new panel is the second panel it is stable but not the correct color. If I use 2 new panels it is unstable. Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 9, 2018 Content Provider Share Posted December 9, 2018 Try to reduce the 5V to 4.8V Link to comment Share on other sites More sharing options...
mageek Posted December 11, 2018 Author Share Posted December 11, 2018 Yes so it is completely noisy at 5v and works best at ~4.5v , still very noisy at 4.8v. The biggest issue after that is the OE signal. If I jumper OE to the power supply frame it stabilizes it almost perfectly, otherwise it is scrambled. Some value r/c filter needed maybe ? Have any suggestions ? assuming it is AC interference (all other panels I have work fine) I made a crossover cable for the G and B signals and that corrects the colour issue. thanks for your time Lucky Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 11, 2018 Content Provider Share Posted December 11, 2018 First of all the RGB Sequence is adjustable in the onscreen menu. So no crossover cable needed. If you jumper OE to the powersupply it wil never turn off and therefore you will never get different brightness levels. I honestly have no idea how to fix this remotely. Maybe a level shifter helps like in this thread Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 11, 2018 Content Provider Share Posted December 11, 2018 Please make a picture of the parts around the HUB75 connector of the panels (input) On 12/8/2018 at 7:29 PM, mageek said: can you verify for me that cx4 and cx5 capacitors are missing from your panels as well No, my panels have cx4 and cx5 Link to comment Share on other sites More sharing options...
mageek Posted December 11, 2018 Author Share Posted December 11, 2018 In picture a few posts above the HUB75 area is pretty clear. I have also tried to put 220 mf electrolytic capacitors in missing cx4 and cx5 but no difference seen. Thanks Kevn Link to comment Share on other sites More sharing options...
mageek Posted December 13, 2018 Author Share Posted December 13, 2018 Can I access the OSD with old v1.4 shield? Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 13, 2018 Content Provider Share Posted December 13, 2018 If it doesn´t have buttons no ! Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 14, 2018 Content Provider Share Posted December 14, 2018 If you want you can send me a pair for testing but I guess that would exceed the price for the panels. Link to comment Share on other sites More sharing options...
mageek Posted December 14, 2018 Author Share Posted December 14, 2018 Thanks Lucky but you’re right it would cost too much to ship. Thanks for all your help I’ll maybe put a scope on the oe and see what I can find out cheers Kevin Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 14, 2018 Content Provider Share Posted December 14, 2018 Please do some closeup pictures of all ICs used on the panels. There must be a difference anywhere between mine and yours Link to comment Share on other sites More sharing options...
mageek Posted December 17, 2018 Author Share Posted December 17, 2018 Hopefully these are readable, chips Near power connection are hard to read Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 19, 2018 Content Provider Share Posted December 19, 2018 mine yours T1-T4 TC7258EN PUC7258H4 U1 74HC245C 74HC245C UR-UG-UB FM6124 FM6124 The only difference seems to be the 7258 but I don´t think that is the problem. http://www.superchip.cn/Private/ProductFiles/6364584403048069321406626239.pdf Link to comment Share on other sites More sharing options...
mageek Posted December 19, 2018 Author Share Posted December 19, 2018 Ok thanks Lucky, I have ordered some V3 shields I’ll try on them when they come in. I have also ordered some new panels from another seller. I will PM you for 3 more activations I tried a new discovery board to get activation number and the panels work with this board at 4.5v !! EDIT: it gets stranger ! 2 STM32F407G discovery board with serial # that starts with D2 work and 2 that start with D4 and D5 do not the serials # that start D2 also work perfectly with V2,60 firmware serials that start with D4 and D5 with OE shorted to ground work with v2.58 but have overlapping display on v2.60 I don't want you to waste any more time on this, but maybe this info is useful..... Thanks and Happy Christmas ! Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted December 19, 2018 Content Provider Share Posted December 19, 2018 Thanks for the info but since the discovery schematic is outdated and has been replaced by the improved Nucleo design with V4 shield I hope that people stop using the discovery board in the near future. Link to comment Share on other sites More sharing options...
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