Brads Electronic Projects Forum

Yes you right,it is very interesting but ıt is the only way that I could control the buttons.Maybe it is related with the expansion port output lojic level.I mean when I check the port D,E by oscilloscope there is 200-150 milivolt (it is lojic 0) without pressing the buttons.By adding pull down resi...

Hi Bitfogav, My botton problem was I could not control mode and player select function by using buttons. Circuit was working as I explained above. Hi Brad, How I fixed it;I changed circuit as in schematic. SuperPongTable1.jpg I add 10k resistors from expansion pads D and E to gnd.Without these pull ...

My button problem has been solved now....
Thank you very much..

I am looking forward to hearing from you

unfortunately, I dont have camera so that I can not post a video :( All I want to know if anybody finished pong table with new board which has got mode, player select pads. If anybody done this without button problem it shows me I have got hardware or software problem. If anybody had same problem as...

I finished pong table but buttons don't work.There is number "9" appears and ıf I push the mode button continuously, countdown start and game begins but if I leave the mode button screen come back to number "9". Has anybody had same problem.If so;Could you please tell me how solve it?Or has anyone f...

Hi all, I did everythıng that you told but unfortunately nothing has been chanced.It seems , I missed something which I could not find, so after nervous breakdown ,I made it scrap and I decided to built again POV project from beginning with new PCB . I will let you inform when I finish new ones Than...

I upload the files that you want

http://www.bradsprojects.com/phpBB2/download.php?id=99

thanks for quick reply... When I saw the image first time , I thought I mixed something on the board then I checked every wire , bus ,companent ,etc. So address bus and increment are correct.I dont think there is a hardware problem .I checked many times with schematic , Dai Omie PCB and everythings ...

Hi Brad , Thanks for this web site. I made 8*85 POV with my own PCB and to test it I programmed eeprom 27c512 very simple one frame as you can see in the attachment excel (first frame) But after I turned it on I noticed that there was a confusion on the frame image .The leds were lit like as in atta...