uO_c 8hp ornament and crime.

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roger
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Post by roger » Fri Mar 30, 2018 6:29 pm

Pins don't touch(covered them with tape).

Using my very poor understanding of the schematics, can I narrow it down to D7/c1/c2/c24/ic6 or is it basicly all over the board?

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ZZ Ardoz
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Post by ZZ Ardoz » Fri Mar 30, 2018 6:31 pm

roger wrote:Pins don't touch(covered them with tape).

Using my very poor understanding of the schematics, can I narrow it down to D7/c1/c2/c24/ic6 or is it basicly all over the board?
I'd check everywhere - you never know where a bridge will be, but I'd check the DAC first and then the other ICs

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henrry
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uO_c PCB and screen compatibility

Post by henrry » Sun Apr 08, 2018 7:19 am

Altitude909 wrote:There is a link to the correct display on the BOM, Display spread sheet. I'm still working on that btw..

http://www.buydisplay.com/default/seria ... e-on-black
Hi! I don't see any the 7 holes for the pins on this screen... is it an error or just the merchants display of the product?

I was also planning to buy a couple of uO_C PCBs from Magpie and was wondering whether will this screen or anotherone fit and be compatible or not?
(As far as I understood there are different versions of the PCB for different screens..?)
And yes, I couldn't find any link to any specific display in the BOM I found..

Would you recomand any specific PCB supplier and compatible BOM?
Thanx

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Altitude909
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Re: uO_c PCB and screen compatibility

Post by Altitude909 » Sun Apr 08, 2018 8:03 am

henrry wrote:
Hi! I don't see any the 7 holes for the pins on this screen... is it an error or just the merchants display of the product?
You need the carrier board, that's just the screen part of the display. The BOM for the display is on the official BOM on a different tab at the bottom



https://oshpark.com/shared_projects/3olQy5tV

henrry wrote: I was also planning to buy a couple of uO_C PCBs from Magpie and was wondering whether will this screen or anotherone fit and be compatible or not?
(As far as I understood there are different versions of the PCB for different screens..?)
And yes, I couldn't find any link to any specific display in the BOM I found..

Would you recomand any specific PCB supplier and compatible BOM?
Thanx
The one linked above is the one the board was designed for. Since the construction of this device DEPENDS on the standoffs for the screen, it was decided to design it for one display only. There is an ebay one that will fit with a slightly different hole pattern but there are also several others with the right pinout that will NOT match. We already did the stupid hide and go seek thing with the displays for the original O_C and it was a mess, that's why you see those with screens that are way off on the panel cutout. By releasing files for an "official" display, that puts an end to it.

There are no different versions of the PCBs from Neutron sound as far as the display goes. The newer rev boards have features that deal with the power drop outs some people have on crappy power supplies but those are not in the wild AFAIK
Last edited by Altitude909 on Sun Apr 08, 2018 8:22 am, edited 1 time in total.

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synthcube
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Post by synthcube » Sun Apr 08, 2018 8:19 am

we're in the midst of evaluating the files for the display in hopes that we can make and stock them here...
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henrry
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Post by henrry » Sun Apr 08, 2018 9:18 am

fma wrote:

This is the one I used for my OG O&C. Its size and pinout (on the amazon description) match the requirements set here:

http://ornament-and-cri.me/bom_2d/
Hello. Does this screen also work on the micro O_C?
Many manufacturers on Amazon don't send their products to my country for some reason, but this one does :)

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Altitude909
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Post by Altitude909 » Sun Apr 08, 2018 10:22 am

henrry wrote:
fma wrote:

This is the one I used for my OG O&C. Its size and pinout (on the amazon description) match the requirements set here:

http://ornament-and-cri.me/bom_2d/
Hello. Does this screen also work on the micro O_C?

Many manufacturers on Amazon don't send their products to my country for some reason, but this one does :)
That's a verified good one. One way to spot them is look at the back, the good ones will look exactly like that. Also keep in mind that sellers dont necessarily send you what's in the pics so it's always a roll of the dice. It's happened multiple times that the pic is good, what you get is different

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henrry
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Post by henrry » Sun Apr 08, 2018 3:12 pm

Thanks a lot for those precious advices and infos.

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fma
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Post by fma » Sun Apr 08, 2018 11:14 pm

henrry wrote:
Hello. Does this screen also work on the micro O_C?
Many manufacturers on Amazon don't send their products to my country for some reason, but this one does :)
As Altitude states it works great. I built 3 of them (OSHPark run) with that screen and have had no problems!

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Post by ReToxx » Mon Apr 23, 2018 10:25 am

just a quick question: as the bag which should contain the LM4040 was empty,
I was thinking I could leave this out for now and install it later..
Is this right or will it harm my O_c?

-->wont harm, but cv wont work...

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Post by seanrieger » Wed Jun 06, 2018 10:31 am

windspirit wrote: UPDATE: new teensy did not fix the problem. Im starting to suspect a board error. I guess I can try wiring the encoder legs directly to the teensy.
So I was having the exact same symptom with my left encoder. It would only turn to the right and if I turned it to the left it would still scroll the cursor to the right. What I found was a vey tiny bit of continuity (multimeter would not beep, but showed a fairly low number instead) from the bottom center pin (ground) and the bottom left pin. For me, I think reflowing C29 is what did the trick. You may want to check the equivalent for the other encoder. I think it's C33 maybe? Hope that helps.
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n0rd
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Post by n0rd » Wed Jun 13, 2018 8:20 am

What is the difference between v1.0 and v1.1 uO&C PCBs? (and how can I tell which version a PCB is? There doesn't seem to be a version number anywhere).
:tardis:

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Altitude909
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Post by Altitude909 » Wed Jun 13, 2018 10:36 am

n0rd wrote:What is the difference between v1.0 and v1.1 uO&C PCBs? (and how can I tell which version a PCB is? There doesn't seem to be a version number anywhere).
1.1 has U12 (under the teensy socket, upper left hand corner)

the 1.1 boards have the ruggedized power so the devices dont freeze on crappy PSUs. They need 3 extra parts: MIC803 votlage supervisor, 100K resistor, and a pogo pin on the front to connect to the reset pad of the teensy which is just a pad on the back of the teensy

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Rainer
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Post by Rainer » Tue Jul 10, 2018 4:09 pm

Regarding board v1.1 - do I have to equip the board with this additional parts,voltage supervisor, 100K resistor and pogo pin, or can I just leave it blank??

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n0rd
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Post by n0rd » Wed Jul 11, 2018 5:27 am

Where are the v1.1 O&C and v1.2 uTemps BOMs?
:tardis:

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Altitude909
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Post by Altitude909 » Wed Jul 11, 2018 6:48 am

n0rd wrote:Where are the v1.1 O&C and v1.2 uTemps BOMs?
O_C 1.1 BOM

uTU 1.2 BOM

The uTU hasnt been updated in ages so I just filled in the relevent bits, only 3 parts are added with 1.2 (pogo pin, MIC803, 100k resistor)

For the pogo pin to work right, you MUST use machine headers like this:

https://www.ebay.com/itm/Single-Row-40P ... Sw37tWAUnp

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n0rd
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Post by n0rd » Wed Jul 11, 2018 8:23 am

Have you got some pics of this pogo pin - machine header arrangement? I don't see how those machine pin headers will work with a pogo pin.

The uTemps BOM has a mix of 0805 and 0603 resistors and caps. Is this correct?

Also, who is selling v1.1 O&C and v1.2 uTemps PCBs?
:tardis:

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Altitude909
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Post by Altitude909 » Wed Jul 11, 2018 10:20 am

n0rd wrote:Have you got some pics of this pogo pin - machine header arrangement? I don't see how those machine pin headers will work with a pogo pin.
Image
The uTemps BOM has a mix of 0805 and 0603 resistors and caps. Is this correct?
No, all 0805. I'll clean up that BOM today, I havent touched it since last fall

Also, who is selling v1.1 O&C and v1.2 uTemps PCBs?
I am. Michigansynthworks.com

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n0rd
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Post by n0rd » Wed Jul 11, 2018 10:52 am

Cheers :guinness:
:tardis:

elodin
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Post by elodin » Wed Jul 11, 2018 11:35 am

Will this header from mouser work (instead of the one from ebay)?

Mouser #: 575-010064 (Obviously more expensive, but it would be significantly faster to ship).

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Altitude909
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Post by Altitude909 » Wed Jul 11, 2018 12:18 pm

elodin wrote:Will this header from mouser work (instead of the one from ebay)?

Mouser #: 575-010064 (Obviously more expensive, but it would be significantly faster to ship).
Those look short, I'll see if there is a different pogo pin to match those

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Altitude909
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Post by Altitude909 » Wed Jul 11, 2018 12:45 pm

Rainer wrote:Regarding board v1.1 - do I have to equip the board with this additional parts,voltage supervisor, 100K resistor and pogo pin, or can I just leave it blank??
Its optional. Its to prevent the start up hang ppl have seen on certain psus

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Altitude909
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Post by Altitude909 » Wed Jul 11, 2018 5:19 pm

elodin wrote:Will this header from mouser work (instead of the one from ebay)?

Mouser #: 575-010064 (Obviously more expensive, but it would be significantly faster to ship).
This should work: https://www.mouser.com/ProductDetail/Ha ... 0sUjWws%3d

That has a minimum 2.9mm height, the Millmax parts are 3.17mm

They stock the 14pin version of that header which will save you a buck but the 64 pin is probably a better idea anyway. I wont merge those parts until someone confirms its works

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pix
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Post by pix » Thu Jul 19, 2018 3:17 pm

I got the 5V regulator in SOT-223 instead of DPAK, but if I understand this right both kinds will work because the center pin/back plate contact the same part of the heat sink...

right? :hmm:

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Altitude909
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Post by Altitude909 » Thu Jul 19, 2018 3:54 pm

pix wrote:I got the 5V regulator in SOT-223 instead of DPAK, but if I understand this right both kinds will work because the center pin/back plate contact the same part of the heat sink...

right? :hmm:
Correct. I use them interchangeably

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