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SNES Controller Interface - Part 3 - Final PCB Module 

James Sharman
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30 окт 2024

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Комментарии : 95   
@weirdboyjim
@weirdboyjim Год назад
Join us on Discord: discord.gg/jmf6M3z7XS Follow me on Twitter: twitter.com/WeirdBoyJim Support the channel on Patreon: www.patreon.com/JamesSharman
@janschrder
@janschrder Год назад
It's very rewarding to watch your systematic work and reasoning during the whole construction phase. From idea to the final tests. Well done James, well done 🙂
@weirdboyjim
@weirdboyjim Год назад
Thanks! Glad you enjoyed it.
@m1geo
@m1geo Год назад
Nice one, James! I'm laying out my own board (USB SDR interface), enjoying a beer, and watching you layout a board! 👌
@weirdboyjim
@weirdboyjim Год назад
Have fun!
@m1geo
@m1geo Год назад
@@weirdboyjim Just given up! Too much computer time for a day off!
@andymouse
@andymouse 11 месяцев назад
I'm the same, if something on a PCB ain't right it bugs the hell out of me. Great work James !.....cheers.
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks andymouse! I agree!
@FrankGevaerts
@FrankGevaerts Год назад
Excellent work! Those cosmetic touches make all the difference!
@weirdboyjim
@weirdboyjim Год назад
Thanks Frank! Needed an antidote to the last pcb which had no led's!
@FrankGevaerts
@FrankGevaerts Год назад
@@weirdboyjim Yes, too many of those would be simply unacceptable!
@HogarthClan
@HogarthClan 11 месяцев назад
So great to see Snek being played with the controller, with PCBs completed. Glad you took the time to fix LEDs...that was so frustrating to see that happen, but that's what revisions are for :)
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks! Hoping to do some games with the vga soon! That will be cool to play something without the pc attached!
@jerril42
@jerril42 Год назад
Terrific. It's getting very exciting. Thanks James. Take care.
@weirdboyjim
@weirdboyjim Год назад
Thanks, you too!
@Otakutaru
@Otakutaru 11 месяцев назад
The outline is really good. Another little board to your collection
@weirdboyjim
@weirdboyjim 11 месяцев назад
Yeah, I really like this one.
@TheRealBobHickman
@TheRealBobHickman 11 месяцев назад
PCB bugfix was totally worth it for the joypad silkscreen alone.
@weirdboyjim
@weirdboyjim 11 месяцев назад
Absolutely Bob! Should have done the silkscreen outline first time round!
@SirHackaL0t.
@SirHackaL0t. 11 месяцев назад
Loving that your signature in solder is so complicated. Lol
@weirdboyjim
@weirdboyjim 11 месяцев назад
You mean my name in copper? It seem a bit more reserved than putting it on the Silk Screen.
@cskilbeck
@cskilbeck 11 месяцев назад
Love it - totally agree that the layout had to be fixed. Also... 20K! Well done!
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks Charlie! Now I'm looking at a silkscreen error on another board, need to do something about that!
@cskilbeck
@cskilbeck 11 месяцев назад
@@weirdboyjim Ah, now you'll have to spend time looking for something that justifies a re-spin so you can get that silk screen juuuuust right...
@luandkg
@luandkg 11 месяцев назад
It’s amazing progress
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks! Glad you are enjoying!
@bytesandbikes
@bytesandbikes 11 месяцев назад
Love the LED layout!😁
@weirdboyjim
@weirdboyjim 11 месяцев назад
Far better than a row of led's!
@OscarSommerbo
@OscarSommerbo 11 месяцев назад
Yay, another James video. According to the dates of the comments I really should become a patreon. Never be ashamed of bodges, have you seen the 80s mass produced computers? Many with factory made bodges for months or even years. Bodges are just a part of making new computers.
@weirdboyjim
@weirdboyjim 11 месяцев назад
It really isn't necessary. At the moment I'm experimenting with making video's public at the same time as I upload the next video. That way I avoid spending two evening watching the stats and replying to comments.
@Mario.M.71
@Mario.M.71 11 месяцев назад
Awesome job as a always .....
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks!
@thegiq
@thegiq 11 месяцев назад
I love that your hotplate still tries to display "Err" when you shut it off.
@weirdboyjim
@weirdboyjim 11 месяцев назад
I sympathies with the hot plate!
@RaveYoda
@RaveYoda 11 месяцев назад
Just so cool and mad respect!
@weirdboyjim
@weirdboyjim 11 месяцев назад
Grateful for your praise I am.
@TitanumIchigo
@TitanumIchigo 11 месяцев назад
I like to complain about PCB designs people do, so let's go... 1. Don't leave copper pours with single via (32:52) - it acts as antenna and your board becomes a nice radio. 2. Traces / components should be at least 2-3mm from boards edge (with exception for angled connectors) 3. Board edge should be protected by chassis ground ring (on each single layer) that is stitched together with vias. This reduces edge fired emissions. 4. Thin long ground pours also acts as antennas (ref. point 1, 32:30) 5. Components should be placed at least 1mm away from other components in low density designs [34:12, capacitor and SOIC14 IC] 6. Each PWR/SIG via should have GND via placed at lumped distance - it improves signal integrity and is necessary at high frequencies (and in power-spike-sensitive circuits) 7. In two-layer designs never cross signals at angle other than 90 degrees (bottom/top layer). Otherwise they will couple together causing interference. 8. If you've space use that space - place traces as far away as possible. 9. Always name your nets (makes it easier to understand your work when PCBs arrive :D). 10. Use colors - it makes routing way easier (especially to have custom color for each power network / GND and high speed signal or parallel bus). There're other issues, but those are the most significant ones. Your design is not bad (as it's low frequency, so it works fine. It's just an "future problem" pretender - it's better to learn proper design rules from "beginning" than to implement them later on).
@weirdboyjim
@weirdboyjim 11 месяцев назад
Well, if you like to complain about ropey PCB design you have come to the right place. I’m a rank amateur (with a working circuit!). Whist I know I have a lot to learn about pcb design I can find many breaches of your rules on commercial pcb’s within arms reach, they are not universally followed! I often get conflicting advice in the comments of videos and it’s not easy to determine who I should listen to. You might be interested to know the schematic is open source, you are welcome to make improvements yourself. It would actually be interesting to make comparisons between my work and the circuit revised by an expert, I would get some test gear on it and hopefully see tangible differences!
@TitanumIchigo
@TitanumIchigo 11 месяцев назад
@@weirdboyjim Okay, sent you an improved version via OSHW Lab messages (User Center). It's not best way to do it, but acceptable for hobby-grade design. (sorry for GDrive link, can't upload to OSHW Lab from my EDA :sad_face:). Btw. I'm not an expert. I just spent way too much time watching "proper circuit design" videos from reputable sources (eg. Altium Academy). On those frequencies differences are hard to see without research-grade hardware, however it quickly becomes an issue (at about >100MHz signals). I always prefer "futureproof" learning (as it's easier to learn how to do things properly rather than to implement countermeasures when issues arrive). And commercial PCBs often breach rules, because it's made to be the cheapest possible PCB, even if it sometimes violate local regulations (IIRC our gov tested extension cords and 80-90% weren't complying to EU standards - aka were illegal to sell). Chinese companies design things "just to work", safety and standards... who would care. That's the reason why I always check newly purchased device for proper grounding of metal parts... (which are usually not grouded at all). If you're looking for good resources on PCB design search for Altium Academy and Phil's Lab. Those are best sources on RU-vid.
@BillySugger1965
@BillySugger1965 11 месяцев назад
Nice looking board James. Don’t forget to add the missing link to the backplane schematic and layout now, because when you come to make an integrated backplane that correction will be easily forgotten. Ask me how I know these things 😊
@weirdboyjim
@weirdboyjim 10 месяцев назад
Good to make those tweaks as you find them! Not actually necessary in this case as the mistake was just in creating the little temporary board.
@peter.stimpel
@peter.stimpel Год назад
Not so bad. I am sure I would have needed more versions of that board if I would have done this. And maybe more layers, too.
@weirdboyjim
@weirdboyjim Год назад
Really kicked myself for that mistake, could have avoided it so easily!
@peter.stimpel
@peter.stimpel Год назад
@@weirdboyjimMaking mistakes is part of the learning process ... dont be too harsh to yourself.
@HanWechgelaer
@HanWechgelaer 11 месяцев назад
2067 views and only 284 likes?, people please like some more! Great content thanks!
@weirdboyjim
@weirdboyjim 11 месяцев назад
That's still more than 10%, apparently that's pretty good.
@helmutzollner5496
@helmutzollner5496 10 месяцев назад
Great! Will you convert this interface now to become an SPI device as well?
@weirdboyjim
@weirdboyjim 10 месяцев назад
No, I'm happy to leave it as it is although it would be fairly simple job.
@helmutzollner5496
@helmutzollner5496 10 месяцев назад
@@weirdboyjim Understand, although it would be conceptually cleaner to have only one interface type. What SPI interface chip would you use to interface the SNES interface to SPI, or would you do that with TTL logic?
@DFPercush
@DFPercush 11 месяцев назад
Huzzah! This is a great step toward making a retro style game console, that's also a general purpose computer with a tty. I wonder what it would take to make an emulator for this board, once it's all said and done. That would give people a reason to write code for it, and you could run it on hardware (as well as anyone who can be bothered to duplicate your boards). I'm not suggesting you write it, but it would make a cool project. Imagine if you had a C compiler back end as well.
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks! I actually already have a simulator for it. You can find it on the discord #toolchain channel with the assembler.
@Minecraftmigapiku
@Minecraftmigapiku 11 месяцев назад
Hardware design into vertilator and simulator's done. If schematics can be converted to kicad there's even tool to convert schematics to HDL
@DustinWatts
@DustinWatts 11 месяцев назад
If you have silkscreen on bare copper, they will not silkscreen print that, so you could have let it like you had it the first time. No use for that information now, but good to know for in the future ;) Nice build btw!
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks Dustin. Good to know, but I suspect it maybe good practice not to rely on it.
@DustinWatts
@DustinWatts 11 месяцев назад
@@weirdboyjim I also not put silkscreen on bare copper. Just because it is not good practice. And it if I do, the design will not look like the final board, which I don't like :) But it is good to know that it is ok if you do it by mistake.
@DavidRFHarris
@DavidRFHarris 11 месяцев назад
I love it.
@weirdboyjim
@weirdboyjim 11 месяцев назад
Glad you did!
@kterstal
@kterstal 11 месяцев назад
Bedankt
@weirdboyjim
@weirdboyjim 11 месяцев назад
That is very Generous thank you! I appreciate the support!
@markantony7413
@markantony7413 11 месяцев назад
Great videos. Is it possible to use solder paste without a stencil? I have a smd practice board but it hasn't a stencil
@weirdboyjim
@weirdboyjim 11 месяцев назад
Yes you can, but it’s only really practical on boards with a solder mask. Repulsion from the mask and attraction to the metal parts seems almost magical at times, be very careful about how much solder you put on and check carefully for bridges before powering on.
@wChris_
@wChris_ 11 месяцев назад
I really dont like the select and start buttons being so high up. Ideally they should go below the Right and X Leds. But thats only cosmetic (and will forever trigger my ocd). You might be able to squeeze the 3 lines going through the perfect spot in between the led pads.
@weirdboyjim
@weirdboyjim 11 месяцев назад
The schematics are open source if you want to try your own layout. I'm happy with this one.
@markrgreenlane
@markrgreenlane 11 месяцев назад
Morning James, any reason why the final peripheral back plain there couldn’t be more than one SNES input board for multi player games, should any arise that is?
@weirdboyjim
@weirdboyjim 11 месяцев назад
You could do that but I wasn't planning on it. Would be more interesting to adapt the board to support 2 controllers, you could share some components. This was an interesting circuit as it has some states and variety of components but if I wanted a second controller the easiest thing would be to put some extra wires into gpio lines and bit bang it.
@markrgreenlane
@markrgreenlane 11 месяцев назад
I hadn’t thought of that, have a two controller board and share some of the circuit between the two rather than having two separate but identical boards.
@LeeSmith-cf1vo
@LeeSmith-cf1vo 11 месяцев назад
If you put a polarizing filter in front of the light, and another one in front of the camera, rotated 90degrees, it might help reduce the reflections? Honestly though I don't think it's that bad, at least not in this video.
@weirdboyjim
@weirdboyjim 11 месяцев назад
That's a clever idea, I actually tried that a while back and it works but it has a drawback. It takes out all the reflections so you use the nice little sparkles of the solder pads etc.. The resulting footage feels flat to me so I'd rather find another way.
@ffsireallydontcare
@ffsireallydontcare 11 месяцев назад
How can you concentrate on the game when there are all those awesome twinkling LEDs?
@weirdboyjim
@weirdboyjim 11 месяцев назад
There are so many LED's on this thing now!
@m1geo
@m1geo Год назад
Oh noes! Glad you respun the PCB. Don't be too hard on yourself. This stuff happens. Look in anything electrical you've bought - bet the PCB isn't V1.0!
@weirdboyjim
@weirdboyjim Год назад
Yeah, I know. It would be easier if the mistake was bigger, this was just me rushing to get the pcb order out the door.
@bkuker
@bkuker 11 месяцев назад
Only at the beginning, really wishing the abxy buttons were in the same location, but rotated to make the two // shapes on the controller.
@weirdboyjim
@weirdboyjim 11 месяцев назад
I used the layout that seemed best to me. The designs are open source so you are welcome to have a play yourself of course.
@bkuker
@bkuker 11 месяцев назад
@@weirdboyjim No worried, this entire project is a work of art! I've been following along the whole time and love it!
@your_utube
@your_utube 11 месяцев назад
My youngest daughter got married on Saturday, I had a horrible chest infection since Saturday and now that I feel better I see this gem of a video in the series and all is well!
@weirdboyjim
@weirdboyjim 11 месяцев назад
Glad you liked it! And congratulations to you daughter!
@AJB2K3
@AJB2K3 11 месяцев назад
Oh bummer, that really sucks Well you have to have a failure at some point but at least it wasn't a Magic Smoke mistake.
@weirdboyjim
@weirdboyjim 11 месяцев назад
Thanks! But you did see the second board revision right?
@AJB2K3
@AJB2K3 11 месяцев назад
@@weirdboyjim Yes and it was back to normal high quality operation.
@rimmersbryggeri
@rimmersbryggeri 11 месяцев назад
Is better to learn playing with the buttons reverse and the absolutely dominate when your friends come over for a gaming session.
@weirdboyjim
@weirdboyjim 10 месяцев назад
Unfortunately the buttons were not reversed, just the led indicators for them.
@TheEmbeddedHobbyist
@TheEmbeddedHobbyist 11 месяцев назад
Your circuits are very hard to follow where they are just shown as individual chips and a global label. Have you thought of using a bus so you can follow the flow more easier. Would help with debugging the circuit as well?
@weirdboyjim
@weirdboyjim 11 месяцев назад
It's really difficult to strike a balance on this. Remember most of this schematic is made in a corner window alongside the breadboard work. Something that many people applauded when I started doing it, but I don't want to jump into videos with a schematic that doesn't relate at all to the stuff people have seen me put together already.
@TheEmbeddedHobbyist
@TheEmbeddedHobbyist 11 месяцев назад
@@weirdboyjim Having spent way too many years drawing schematics by hand I find it hard not to use buss for things like address, control and data . Made it easer to draw and follow the flow, the old thing of information flows in on the left and out on the right. The final circuits and PCB's were done by the drawing office. saved me having to know all the standards required for the PCB production etc. I love the videos, so will continue to pause them to get an understanding of the cct operation. keep them coming.
@frognik79
@frognik79 11 месяцев назад
Blast Processing (TM).
@weirdboyjim
@weirdboyjim 11 месяцев назад
I Love the way you push order and it's right there on your desk!
@AJB2K3
@AJB2K3 11 месяцев назад
Planned Obsolescence ?
@weirdboyjim
@weirdboyjim 11 месяцев назад
8-bit is Eternal!
@m1geo
@m1geo Год назад
37:54 what is going on with the JLCJLCJLC and their serial number? They didn't replace it? 😂😂
@weirdboyjim
@weirdboyjim Год назад
I double checked my original recording. Looks like I didn't select the option to specify serial location. I've done that before any they spotted it anyway but not in this case. It was still comfortably hidden by the connector though so no harm.
@m1geo
@m1geo Год назад
@@weirdboyjim Aah that explains it! Nice little board that, James! Keep it up mate!
@maskloy
@maskloy 11 месяцев назад
10
@weirdboyjim
@weirdboyjim 11 месяцев назад
On this channel I feel I need to double check the number base before interpreting...
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