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 Forum index » DIY Hardware and Software » fonik's place
PCBs for Dave Kendalls MIDI2Clock Motherboard
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rosch



Joined: Oct 03, 2009
Posts: 162
Location: germany

PostPosted: Tue Aug 16, 2011 9:08 am    Post subject: Reply with quote  Mark this post and the followings unread

it should be something like that
it's a 4 pin quartz oscillator, but this is the above mentioned large package. there are smaller ones (still 4 pin but half the length), those are usually easier to get from Farnell etc
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Dave Kendall



Joined: May 26, 2007
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PostPosted: Tue Aug 16, 2011 9:42 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi guys.

Hang in there - I'm doing a build guide with pictures - ready soon.
Crystal oscillators are different to 2-pin crystals, which need a small network of components to work. XTAL oscs are a bit easier to use, and keep the parts count down.
On the left in an 8 -pin SPXO package. The middle is a metal can 8-pin, on the right is 14pin. The PCB can take all of these types, but the SPXO is the neatest fit if using an IC socket. (it's also more expensive though.)

Pin 1 is at the bottom left of each one.

The middle one is a 16mHz version which will be tested soon....

stay tuned Wink

cheers,
Dave
(edited to add note about SPXO fit)


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tommi



Joined: Dec 05, 2007
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PostPosted: Wed Aug 17, 2011 4:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks!
I found this one . It needs to be powered by 5V though. It has 25pf of load capacitance and a frequence stability of 100ppm.
Is that good?

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Dave Kendall



Joined: May 26, 2007
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PostPosted: Wed Aug 17, 2011 5:43 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi.

I can't open the page (my browser is crap) but +5V 4.000mHz is correct.
The UART has a 3% tolerance for speed, so it should be fine. The one I used is an epson SPXO.

cheers,
Dave

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Dave Kendall



Joined: May 26, 2007
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PostPosted: Thu Aug 18, 2011 2:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi guys,

For those of you in the UK with an account with rapid electronics, they have a sale ending midnight friday august 19th.

Have been working on a full build guide and BOM with pretty pictures for too long, so have lost track of time (hey ho..... Wink )
1 x 4538 4538
1 x HC14 HC14
2 x HC4017 HC4017
1 x XTAL osc - either 4mHz 14-pin XTAL osc
or SPXO posh XTAL osc
pin headers and housings here
headers
housings check PCB pic for details....
1 x HC4040 HC4040
1 or x 2 16-way IDC headers (J7 and Doepfer) 16-way IDC
1 or 2 x 16-way IDC housings 16way housing
8 x toggle switches SPST (1) SPST (2) - The SPDT on/on swiches will also work fine, as will dual pole versions of either type.

Rapid don't have the HC237 in stock, and the 0;156 MOTM header and 6N138 opto isolator are back-ordered.
Hope this helps some:)

cheers,
Dave

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fonik



Joined: Jun 07, 2006
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PostPosted: Mon Sep 05, 2011 5:19 am    Post subject: Reply with quote  Mark this post and the followings unread

good things come to those who wait.

board has been built and thoroughly tested, the buildong documentation has been written and proofread (will be posted soon).

so there is no reason to wait any longer with shipping the PCBs. expect emails or PMs regarding payment details in the next days.

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cheers,
matthias
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fonik



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PostPosted: Mon Sep 05, 2011 5:54 am    Post subject: Reply with quote  Mark this post and the followings unread

Building Documentation now uploaded:
M2C Documentation PDF(approx. 2MB)

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cheers,
matthias
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bigbluewave



Joined: Apr 20, 2009
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PostPosted: Mon Sep 05, 2011 6:34 am    Post subject: Reply with quote  Mark this post and the followings unread

Wow,
Amazing guys! That has to be one of the most comprehensice build docs for a project ever. wow!

Thank you for your incredible dedication!

TTFN,
Ben
www.bigbluewave.co.uk
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fonik



Joined: Jun 07, 2006
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PostPosted: Mon Sep 05, 2011 6:39 am    Post subject: Reply with quote  Mark this post and the followings unread

I agree. Kudos to Dave, who wrote it!
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Cynosure
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Joined: Dec 11, 2010
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PostPosted: Mon Sep 05, 2011 2:03 pm    Post subject: Reply with quote  Mark this post and the followings unread

Awesome job. Quantity for the components on the BOM would be useful, but I will cross reference the schematic. Just makes it easier when I go to the shop to buy it all.

I have two questions:

1. If I make mine 10V, can I just add a resistor with a toggle switch to change it to 5V? The device I want to use it with now should be ok with 10V, but I might make some lunettas or drones in the future that run at 5V. I could even make a small adapter that is plugged inline on the clock output so I can follow your build easier without adding my own stuff, but I am curious if you know whether or not that would work.

2. When/how do I send you the payment and my shipping address?
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diablojoy



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PostPosted: Mon Sep 05, 2011 2:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

orsm build doc dave Cool
matthias will await your pm whilst jumping up and down with joy
[joy is my wifes name Laughing ]




its an infinite helical sphere with a diameter of zero
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Dave Kendall



Joined: May 26, 2007
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PostPosted: Mon Sep 05, 2011 3:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

Glad you like it guys Smile

Cynosure - you'd have to mess around with DPDT or even maybe 4PDT switches for each output (6 in total) to make it switchable - I haven't tried that.........

An easier route to interface directly with Lunettas, would be to use the signals from J5, and build the circuits around U7 and U8 on perfboard. You wouldn't need the opamp stages in U9 and U10. You'd have to be careful not to damage U5 and U6 though.....
You would then have a +10V M2C module, with a lunetta expander board that can be just plugged in with 2 cables - an 8-way to J5, and a 4-way to PWR out.

Best of both worlds. When not using lunettas, just unplug the expander Wink

cheers,
Dave

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Cynosure
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PostPosted: Mon Sep 05, 2011 5:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

Great! Thanks!
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fonik



Joined: Jun 07, 2006
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PostPosted: Tue Sep 06, 2011 3:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Cynosure wrote:
2. When/how do I send you the payment and my shipping address?

expect emails or PMs regarding payment details in the next days.

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cheers,
matthias
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TheAncientOne



Joined: Dec 26, 2006
Posts: 146
Location: United Kingdom

PostPosted: Tue Sep 06, 2011 5:13 am    Post subject: Reply with quote  Mark this post and the followings unread

Just checking through the BOM and I discovered I have a big bag of new 4MHz 8 Pin style oscillators here.

[[Very low cost: though I don't think posting them individually would be economical. There are at least 50. I could send then to Fonik and he could post them out with the boards, if people could wait a few days.]]

Just a thought, otherwise, if anyone has a problem getting them - just memo me.

Update:

I had a word with Matthias, and since he's already started taking payments, it would make things too complicated for him to distribute them now, so if anyone wants any I have done some pricing, (in UK Pounds).

Carriage cost is for up to 10 units, (more in the UK).
Oscillators £0.50 each

Postage, packing and Paypal fees:

UK - £1.50
Europe Airmail - £2.20
USA Airmail - £2.80

Just a pity I didn't find the bag 2 weeks ago!

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diablojoy



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PostPosted: Fri Sep 09, 2011 7:40 pm    Post subject: Reply with quote  Mark this post and the followings unread

hey Prof seems i may need to take you up on that offer
didn't find much from my usual suppliers and what was there, very exy
PM sent
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fonik



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PostPosted: Sat Sep 10, 2011 9:33 am    Post subject: Reply with quote  Mark this post and the followings unread

hey mike. thank's for doing this! Very Happy
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adambee7



Joined: Apr 04, 2009
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PostPosted: Mon Sep 12, 2011 12:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've PM'ed you prof. Very Happy Very Happy
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TheAncientOne



Joined: Dec 26, 2006
Posts: 146
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PostPosted: Mon Sep 12, 2011 12:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

Just got the first batch of oscillator modules ready for posting tonight.

Glad I decided to do 100% test, I had a one that wouldn't settle on frequency. we're talking 100 part per million, but I reckon it was enough to say 'reject'. The rest test clean and all seem to be within 4 PPM, (a few Hz), otherwise. A few had some slight corrosion on the pins, due to being stored in an open box, before I got them, so they have re-tinned legs, (by me); they're not 'pulls'.

About 20 left.

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tomcat



Joined: Oct 14, 2005
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PostPosted: Mon Sep 12, 2011 5:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

Painpaled. Did add 2 more Wink
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Dave Kendall



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PostPosted: Tue Sep 13, 2011 5:14 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for doing this Mike. Cool

cheers,
Dave

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TheAncientOne



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PostPosted: Tue Sep 13, 2011 7:01 am    Post subject: Reply with quote  Mark this post and the followings unread

No problem - It's good to do a little bit to help. Thanks to Dave and Matthias for such a superb project.

All order to date sent Today:
Adambee7
BigBlueWave
Bubzy
CitricAcid
DiabloJoy
Rosch
Tomcat

About 15 left.

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rosch



Joined: Oct 03, 2009
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PostPosted: Tue Sep 13, 2011 9:36 am    Post subject: Reply with quote  Mark this post and the followings unread

my pcb arrived today! thank you!
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TheAncientOne



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PostPosted: Fri Sep 16, 2011 1:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

My board arrived today. Thank you both very much. Lovely work, and I'm manfully resisting the temptation to start it right away.
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Danno Gee Ray



Joined: Sep 25, 2005
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Location: Telford, PA USA

PostPosted: Fri Sep 16, 2011 3:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

Got my board today as well. PM'd Mike to order a couple oscillators.
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