[raphael]

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would this mean my caps on my dOUT are in the wrong place as well.. i have connected them from the GROUND of the chips to the ground of the PCB..

Yes, this is wrong. You have to place the caps between Vdd (+5V) (which is pin 16 of every 74HC595) and ground.
Take a look at the schematics. These are the reference (as Thorsten always says): http://www.ucapps.de...mbhp_doutx4.pdf
So just connect pin 16 of ever 74HC595 with GND (Vs).

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and still have to put another cap somewhere (the big blue one :S )

Look again at the schematics. It's the one at J1. So place the cap between Vd and Vs like all the others but as near as possible to J1 (from where the supply voltage comes).

Raphael

[Wisefire]

@tarzan boy: its kinda mandatory seeing i dont have a guide print on my PCBs.. but it is kinda usefull..
@ raphael: thnx dude.. this almost cleared everything up for me.. one thing though.. do i need to bust a big cap on every dOUT or just the first one. not talking bout the small caps just the big one on the beginning.. thnx..

[raphael]

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do i need to bust a big cap on every dOUT or just the first one. not talking bout the small caps just the big one on the beginning.. thnx..

I would say one at the first DOUT in line is enough. But placing one on every module won't make it worse ;D

[Wisefire]

in the meantime i reajusted my faulty caps they are in sync with the schematic now..
if it doesnt make it worse.. why not :P but lets not get ahead of ehm.. me?!. probably should get some sounds out of my sid first :S
when are those fscking PICs gonna arrive.. man..

how does a dOUT and a SID module look like with the caps in the RIGHT places you ask.. well let me show you!

THIS IS THE RIGHT.. and i do mean RIGHT CAP CONFIG.. THE PICS IN THE OTHER POST ARE WRONG.. just to avoid getting someone else in the same trouble :P

another day.. another module..

[Wisefire]

ok another day.. 2 modules.. made a dIN and the CORE..
wow that core is hectic.. but cewl to make anyway.. but i still have a dislike for caps.. they look to much alike :P and i cant just measure them.. but with a little guesswork.. its just like a little puzzle.. :P


i noticed that i dont make photos of half done modules .. so here is one :P.. and now its done..

notice the caps in the right place :D


i felt productive.. notice the osc crystal is ON the pcb instead of under it.. it fits so why not..  and look how shiny the back is.. im getting better :D

[kokoon]

uhh i'm afraid the bypass caps on your DINs aren't correct :> but i could be wrong.

[Wisefire]

actually i am quite shure they are correct..  but i could be wrong as well :D

when seen from the "up"side with the little indent (the U indentation) facing up.. the upper right pin is vdd.. am i right?
i deduced this info from http://www.ucapps.de.../mbhp_dinx4.pdf

[kokoon]

hmm on ucapps it says first bridge then bypass... but you've made the bridge with the bypass cap which isn't EXACTLY the same. but by no mean i'm sure it's wrong. someone else tell.

[raphael]

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when seen from the "up"side with the little indent (the U indentation) facing up.. the upper right pin is vdd.. am i right?

Right ;)

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hmm on ucapps it says first bridge then bypass... but you've made the bridge with the bypass cap which isn't EXACTLY the same. but by no mean i'm sure it's wrong. someone else tell.

For me, it looks correct. (BTW.: What do you mean with "first bridge then bypass" ???)

Raphael

[moebius]

Wrong Wrong Wrong - even on the DOUT page. Seems like TK doesn't GET it? :P

As KD was helpful enough and pointed out this design flaw, sny questions about bypass caps should be forwared to him I think, his email address is: dalenkarl@yahoo.se

Bye, Moebius

[Wisefire]

OK, this would now be a good time to utter a WTF..
are you beeing serious moebius.. is it really wrong on the dOUT page itself.. does TK doesnt know what he is doing..
WILL MY MIDIBOX SID ONLY DISPLAY "HEHEHEH, GOTCHA!!!!" ON MY BEAUTIFUL LCD SCREEN???
WILL IT DISINTEGRATE IN FRONT OF MY EYES.. AAARGH.. ok..

</drama>
im leaving them there as they are now.. ill wait until this is sorted out. otherwise im resoldering 2 much..

now for some other important events..
got my second c64.. its a c64c.. and i got crazy and soldered another dIN



now its just waiting for the pics to arrive before i can even hear something out of my sid chip..

[eumir]

you have no idea how useful is this post, really, i mean, I have 3 c64´s waiting for me to be brave enough to start building my mbsid (I´m afraid of burning my sid´s), cause I needed some kind of tutorial or something. Now watching you do it is motivating me. Thank you, really, I mean it. I´m ordering the parts from SmashTV next week. Thanx again!

[tarzan boy]

daamn, i've found 5 c64s (3 c64c's) and NONE have had a disk drive. i was wanting to do some video programming but my datasettes are so unreliable.

and yeah, this thread is really useful, i was thinking earlier today 'if i hadnt started 2 days before him, i'd be following his every move!'
catch up and get ahead of me so i can follow your lead!!

[moebius]

There will be no Midibox. Bypass caps are wrong. Believe me. Believe me. Believe me - I do. [K.D Lang]

Bye, Moebius

[kokoon]

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For me, it looks correct. (BTW.: What do you mean with "first bridge then bypass" ???)

ahh i see now. he forgot to connect (bridge) CLI to ground. then i put the cap between CLI and Vdd.

but he can just add those 4 connections (isolated bridges) and i guess it'll be okay. i'm really not that sure though. i followed every step on ucapps and i got it right (that means my SIDs work. i haven't tested the DINs yet though :D

[Wisefire]

@eumir: thank you, i am glad that people can find motivation in my posts. and i hope you'll build a beautiful sid. good luck and why not show us how your progress will be! :D

@tarzan boy, i will probably not catch up seeing i dont have any PICs yet. but if you want to buy my diskdrive..  ;D

@moebius: it refuses to proof that it exists, for proof denies faith, and without faith its nothing!! (modified quote from h2g2)

@kokoon: but we are talking about the dINs and the dOUTs.. so its not THAT bad when they dont work inmediately.. ill still be able
to get some sounds out of my sid.. :D but still its kinda serious.. what am i doing wrong then.. i followed the instructions and
in my opinion followed them correctly.. so wtf is CLI and what am i doing wrong..

[Wisefire]

well.. i soldered all the PCBs.. only one problem.. in my last din package i had only 3 bypass caps.. so ill have to go to the electronics store when i find the time.. to get 1 cap :S.. also sometime this week ill be getting my tact buttons.. found a company who has mec switches in stock.. so they will probably look nice.. but 1 button is about 1 euro.. so pretty expensive.. but hey.. i want it looking nice..

but those bypass caps are giving me serious headaches.. i thrust TK to be the definitive source of information around here.. so TK if you read this.. what is the correct possition of the caps? have i done it wrong?

and still no pic processors.. which is getting frustrating on itself..

and on another note..when this project is done.. im stepping up the difficulty.. when my mbsid is working as i want it to work.. then im gonna build my own midicontroller yeeh..

[raphael]

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but those bypass caps are giving me serious headaches.. i thrust TK to be the definitive source of information around here.. so TK if you read this.. what is the correct possition of the caps? have i done it wrong?

Just take a look at the schematics. They're always right ;D.
For example DIN: If your caps are soldered between pin 16 of every IC and ground it's ok.

(Just for correctnes: Ideally bypass caps should be placed between Vdd pin and GND pin(Vss) of every IC.)

[kokoon]

the bypass cap on DIN is okay but you're missing the GND->pin15 (CLI) connection. i'm not sure whether it's essential or not but that's the error i spotted. but i can see that GND line going quite more further so i don't think it's okay you forgot it.

look:


you forgot this step:

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This pictures shows the 4 additional bridges, realized with isolated cables.

[Wisefire]

thnx kokoon for spotting this.. you are absolutely right, the pin 15 bridge to ground is not connected on the back..
its connected on the front.. under the placeholders.. i found it to work and it looked cleaner.. so the connections ARE there.. just not in the usual place :D
that would mean that i HAVE made the right connections.. and its not gonna blow up in my face  ;D

that is a good thing to know..