I/O Board

https://github.com/MiSTer-devel/Main_MiSTer/wiki

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gsargent70
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Re: I/O Board

Postby gsargent70 » Wed Oct 09, 2019 4:49 pm

sajattack wrote:Do you have a full list of parts for v6.0 like v5.5 in the wiki? If not, what size are the 100uF caps?


I can post what I used tonight as a BOM but keep in mind I haven't tested the analog video out yet as I forgot to order the switch for SOG part

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Re: I/O Board

Postby Poobah » Thu Oct 10, 2019 3:20 am

sajattack wrote:Do you have a full list of parts for v6.0 like v5.5 in the wiki? If not, what size are the 100uF caps?


I'm using KEMET T491C107K010AT, they are 6032.
MiSTer Expansion Boards, USA Seller: IO, SDRAM (32, 64, 128), RTC, USB, Audio Input & Accessories)
http://www.legacypixels.com/mister

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Re: I/O Board

Postby Poobah » Thu Oct 10, 2019 3:45 am

gsargent70 wrote:

Poobah -

I just got done building my V6 board and on mine at the main menu the red and green leds strobe back and forth. Is this correct?

Also the digital audio led is not on. Does it only light when a digital audio source is plugged in to the jack?

Thanks - gsargent


The newest menu core seems to have that behavior: power[red] and user[green] strobing back and forth.
digital audio led should always be on (to the naked eye)
MiSTer Expansion Boards, USA Seller: IO, SDRAM (32, 64, 128), RTC, USB, Audio Input & Accessories)
http://www.legacypixels.com/mister

sajattack
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Re: I/O Board

Postby sajattack » Thu Oct 10, 2019 8:37 am

gsargent70 wrote:
sajattack wrote:Do you have a full list of parts for v6.0 like v5.5 in the wiki? If not, what size are the 100uF caps?


I can post what I used tonight as a BOM but keep in mind I haven't tested the analog video out yet as I forgot to order the switch for SOG part

Yes please.

gsargent70
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Re: I/O Board

Postby gsargent70 » Fri Oct 11, 2019 2:11 am

I can post what I used tonight as a BOM but keep in mind I haven't tested the analog video out yet as I forgot to order the switch for SOG part[/quote]
Yes please.[/quote]

Here you go, I went ahead and put the links in there too from where I got it all from in case you needed them. Enjoy! :)

gsargent BOM I/O V6.0

Capacitors
-----------------
C7 - C10 10nf - https://www.mouser.com/ProductDetail/80-C0805C103K5R
C6, C11, C12 100uf - https://www.mouser.com/ProductDetail/74 ... X96R3C2TE3
C1 - C5 10uf - https://www.mouser.com/ProductDetail/80-C0805C106K8P

Resistors/Resistor Arrays
-------------------------------
R1, R2 1K - https://www.mouser.com/ProductDetail/603-RC0805FR-071KL
R3, R4 100ohm - https://www.mouser.com/ProductDetail/60 ... FR-07100RL
R5 200ohm - https://www.mouser.com/ProductDetail/60 ... FR-07200RL
RN1, RN3, RN5, RN7, RN9, RN11 604ohm - https://www.mouser.com/ProductDetail/652-CAY16-6040F4LF
RN2, RN4, RN6, RN8, RN10 300ohm - https://www.mouser.com/ProductDetail/652-CAY16-3000F4LF
RN12, RN14 100ohm - https://www.mouser.com/ProductDetail/652-CAY16-1000F4LF
RN13, RN15 10K - https://www.mouser.com/ProductDetail/652-CAY16-1002F4LF
RN16, RN17 560ohm - https://www.mouser.com/ProductDetail/652-CAY16-5600F4LF

Transistors
----------------
Q1 100ma 50v - https://www.mouser.com/ProductDetail/863-BC847BLT1G

Switches/Connectors/Headers
---------------------------------
SW1-SW3 - https://www.mouser.com/ProductDetail/612-TL3300DF160Q
J4 - https://www.mouser.com/ProductDetail/490-UJ3-AH-4-TH
J3 - https://lcsc.com/product-detail/Connect ... 13206.html
P3 - https://lcsc.com/product-detail/Wire-To ... C2318.html
P4 - https://lcsc.com/product-detail/Wire-To ... 10384.html
J2 - https://www.mouser.com/ProductDetail/490-SJ1-3523N
Red, Yellow, Green 5mm Led - https://www.amazon.com/gp/product/B01ER ... UTF8&psc=1
Red 3mm Led - https://www.mouser.com/ProductDetail/696-SSL-LX3044HDTR
J1 - https://www.amazon.com/gp/product/B00C3 ... UTF8&psc=1
P1 - https://www.amazon.com/gp/product/B071X ... UTF8&psc=1
Fan Connector - https://www.amazon.com/gp/product/B01FF ... UTF8&psc=1

matman
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Re: I/O Board

Postby matman » Wed Oct 16, 2019 6:26 pm

Point of clarity on your BOM. The pdf says tested with:
R=240, 2R=475
AND
R=300, 2R=604

Should RN1, 3, 5, 7, 9, 11 be 300
and
RN2, 4, 6, 8, 10 be 604?

if not, maybe i don't follow what the spec R and 2R notations mean.

Thanks!
Matt

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Re: I/O Board

Postby Nat » Wed Oct 16, 2019 9:45 pm

Hi Matt,

As per the schematic here https://github.com/MiSTer-devel/Hardware_MiSTer/blob/master/releases/iobrd_6.0.pdf

RN1 is a 2R and a 2R is the 604 ohm resistor network.

RN2 is a R and R is the 300 ohm resistor network.

Each numbered resistor network has the notation of either R or 2R underneath on the schematic.

Image

Hope my explanation makes sense.

Thanks

Nat

gsargent70
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Re: I/O Board

Postby gsargent70 » Thu Oct 17, 2019 2:17 am

Yea what Nat supplied is what I did. I just followed the R and 2R notation under each RN component. I believe somewhere in a post above Sorgelig states that the R=300 and R2=604 gives darker analog video output than the other R and R2 combination.

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Re: I/O Board

Postby Heppaz » Sat Oct 19, 2019 11:56 am

Hi, does anyone know why my whites would be purple on the VGA output?

I/O Board V6

Image

RGB colours seem to be displaying as normal.
Image

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Re: I/O Board

Postby culexus » Sun Oct 20, 2019 5:12 pm

Heppaz wrote:Hi, does anyone know why my whites would be purple on the VGA output?

I/O Board V6

Image

RGB colours seem to be displaying as normal.
Image



I also got this on my first v6 board and what I found was a bad solder joint on on of the ressistor array, think it was RN2 just use flux and reflow them, also use a multimeter and check for bridges.

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Re: I/O Board

Postby Heppaz » Sun Oct 20, 2019 6:12 pm

culexus wrote:I also got this on my first v6 board and what I found was a bad solder joint on on of the ressistor array, think it was RN2 just use flux and reflow them, also use a multimeter and check for bridges.

Thanks.
I checked the networks over and there was a dry joint on RN5.

All working good now :)

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Re: I/O Board

Postby matman » Mon Nov 04, 2019 1:01 am

Nat wrote:Hi Matt,

As per the schematic here https://github.com/MiSTer-devel/Hardware_MiSTer/blob/master/releases/iobrd_6.0.pdf

RN1 is a 2R and a 2R is the 604 ohm resistor network.

RN2 is a R and R is the 300 ohm resistor network.

Each numbered resistor network has the notation of either R or 2R underneath on the schematic.

Image

Hope my explanation makes sense.

Thanks

Nat


Thank you. For some reason I missed those annotations initially and just got my order from Digikey...just awaiting my headers so i can get this soldered up..

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Re: I/O Board

Postby Zorlac » Tue Nov 12, 2019 11:50 pm

Sorgelig - Would you ever consider replacing the TOSLINK audio out with a 75 Ohm BNC audio out on the I/O board? 75 Ohm BNC is known to be one of the best connections to/from a DAC when using S/PDIF.

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Re: I/O Board

Postby Sorgelig » Wed Nov 13, 2019 12:05 am

Zorlac wrote:Sorgelig - Would you ever consider replacing the TOSLINK audio out with a 75 Ohm BNC audio out on the I/O board? 75 Ohm BNC is known to be one of the best connections to/from a DAC when using S/PDIF.

I have no plans to change it to coaxial. TOSLink is more electrically safe output. There are many cheap converters from TOSLink to coaxial if you really need it.


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