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psmmacker

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psmmacker last won the day on August 22 2016

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About psmmacker

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    Advanced Member
  • Birthday 01/04/1980

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    Paulmason9@hotmail.com

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    uk
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    Computer and technology

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  1. Problem with Pin2DMD on DATA EAST

    your missing a smother circuit after the power pack but i dont kmow what the hell i am talking about
  2. hi guys i asked the designer of pindmd v2 maker if we could flash he code on to the stm32 discovey and io pins from the hex data to be feed in to a raspberry pi zero pins as dr pinball said it may be too slow and needs to be 100mhz to improve timing issues i can only get 80 frame rate a second on pindmd itself i know pin2dmd uses a bin but the pindmd uses a dfu type firmware regards paul
  3. Problem with Pin2DMD on DATA EAST

    no probems here my link on solution hope it helps may be for research for vpinmame
  4. Problem with Pin2DMD on DATA EAST

    sorry my idears never work
  5. hi was was looking at a raspberry pi gio pins with a single led on the gnd and gio + pin and was thinking we get red leds light up only when we dont use any 5volt power pack plus the led that flashes when you flash the firmware also makes the leds on the panels blink slighty dim wondering i resistors could of been used to take down the red pwm only Resistor for Red: (3.3v – 2.0v) / .02A = 65Ω Resistor for Blue: (3.3v – 3.2v) / .02A = 5Ω Resistor for Green: (3.3v – 3.2v) / .02A = 5Ω https://www.electronics-notes.com/articles/electronic_components/resistors/variable-resistors-potentiometers.php
  6. 1x 000.1 nf ceramic capactior 1 nf 102 http://www.ebay.co.uk/itm/Ceramic-Capacitors-10-Pack-Choose-from-50-Values-2Pf-100NF-Free-UK-P-P-/231348523213?var=&hash=item35dd7250cd:m:mZI5uQwNu86slqRGIjBrjMQ 1 x 22uF 25Volt Radial Lead capacitor http://www.ebay.com/itm/Capacitor-22uF-25-Volt-x-50-pieces-Bag-25V-Caps-Electrolytic-Aluminium-Radial-/292252594204?epid=2085104337&hash=item440b9cb01c:g:GRoAAOSw6oBXFPC- 1x induction choke 2.7 uh https://m.ebay.co.uk/itm/PANASONIC-ELLATP4R7NB-CHOKE-COIL-4-7UH-9-1MOHM-4-5A-/181883196452?epid=1880868103&hash=item2a59155424%3Ag%3A0pYAAOSw2s1Utc-h&_trkparms=pageci%3A1e3fe3f1-a782-11e7-94b0-74dbd180cefa%7Cparentrq%3Add983c7315e0abc0073a8186fffec09f%7Ciid%3A2 https://m.ebay.co.uk/itm/2x-Radial-Ferrite-Choke-Inductor-Coil-4-7uH-to-100mH-1st-Class-UK-Post-/261504263106?var=&hash=item3ce2de63c2%3Am%3Am6qvxQQR6OL0UyPrXrgtQLA&_trkparms=pageci%3A5d6d814a-a688-11e7-85a7-74dbd180c56b%7Cparentrq%3Ad733741915e0a9c15d6d0a5bffffe531%7Ciid%3A1 power pack used to test duel 2016 Free Shipping 25w 5V 5A Din Rail Switching Power Supply mini size ac-dc LP-25-5 dc power supply for led driver http://s.aliexpress.com/rAJB3IFJ in testing differnt types for induction stress testing sorry for late video been so busy add gnds after chain on the right panels leaving the lefts with positive only + remember the golden rule there are 3 gnds comming from the stm32 discovery via the usb on the pc side p5 fixed same method as below p2.5 and p4 i used this power pack for p5 i used a 5volt 2 amp 2000 ma induction coil bottom left A 5A 5V power supply is almost certainly a switcher so the noise is most likely at the switching frequency. A 22uF 25 volt and a 0.01uF capacitor in parallel and a small inductor coil should take care of the noise i was looking at led lighting circiuts like above gave me a idea to add this as it seem the power packs had a too high coil like the 10volt 5amp that was meant to be used in the pin2dmd setup guide
  7. a car ecu computer this is from my fiat panda had a gnd added to the pcb on the outside of the casing from the 12 volt battery i wonder if the mcu of the stm32 needs the same as there is transisters or smd fueses on every pin of the car ecu outputs and inputs pins thanks paul
  8. put 1 gnd as it flickers if they all linked to gnd gnd between computer and stm32 discovery from power pack may need 2 female (one from pc the other to stm32 discovery board) usb sockets improve pcb i will ask sash to design but you can see how i wired it and what two socket to femail to femail standred dont matter what way they was wired would be bi directional the red green white stayeds the same only black hads a extra gnd added from the power pack
  9. will do oz sorry its my bi polor pal and i am using a mobile to type not a pc still cant get p4 and p5 to work with the new shield so sash giving me 2x rev 2.0 b it somehow shorting on 3.2 rev sheild needs to be bench tested to be ruled out or my power pack too high at 10 amp needs to be 6amp max i have a p3 set of panels with rev 2.0b and the same power pack and it works fine swap the panels over same shield on p4 and p5 it flicking i tried updating stm fimware i tried extra gnds btw p2.5 works when you put a gnd on the middle of the panels from the power pack pin 4 as there 3 grounds on the rgb pin 4 8 16 as i have been told by aliexpress suppliers only 1 gnd is needed so i am sort of stuck between a hard rock and a hard case so ill be going to a lcd type dmd with pindmd v2 and dr pinball raspberry pi extender as i am pulling out from the support i had it with pin2dmd thanks paul least i sorted the duel display cable and got helped uncal sash least he supporting me cant say much about the other 2 ive got a programmer so i dont need them either and read my profile i am a computer engineer by trade and also in electronics aswell next i will try a diffent buck converter as pinball sp uses 12volt in and ill test that and for the record if i use the gnds on the hub75 eg pin 4 and not the 2 gnd on each panel the bleeding does go away but they keep changing the capicators layouts eg 10 volt 220 uf on the panels the chinese suppliers from aliexpress which i have pointed out to them myself to investergate they told me to lower to value of the uf of the capictors to slow drain timing i am also using 1.37 firmware open source and tested the one with a payed activision key and its not a firmware issue just to let lucky1 know the last test plug pindmd v2 into the pin2dmd via the 14 lin input and see if i get a better result by testing 2 mcu side by side may get timing issues but ill soon find out example image
  10. STSW-LINK007 do we update

    hi do we upgrade our stm32 discovery with the flash software that flashes the pin2dmd bin with the STM32 Link Utility and flash the STSW-LINK007 after that my board is a mb997d as i have never updated it before and i wonder why i am getting stm32 issues with flicking panels thanks paul
  11. two + to panel one gnd to usb pc cable (gnd only) no green red or white n/a) one gnd on right only panel only
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