Single-Board Universal Module

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23 Jun 2014 04:28 #24184 by victzh
Replied by victzh on topic Single-Board Universal Module
I'm curious, where did you find A7105?

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23 Jun 2014 04:43 #24186 by JustenCase
Replied by JustenCase on topic Single-Board Universal Module
All I can say is "You guys rock!!!" Expecting delivery this week of the final components I need to build three of the universal multi-mod boards. Can't wait to try it out. After that, I'll probably look into the Single Board Universal module.

Regards,
Mark

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23 Jun 2014 07:33 #24187 by SeByDocKy
Replied by SeByDocKy on topic Single-Board Universal Module
Great job ....

When first feedbacks will be positives, I will try to build one ...

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23 Jun 2014 10:50 #24188 by SadSack
Replied by SadSack on topic Single-Board Universal Module
aliexpress for Nrf/CYR and A7105 Other parts from Digi

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23 Jun 2014 10:55 #24189 by SadSack
Replied by SadSack on topic Single-Board Universal Module

PhracturedBlue wrote:
The final board can be found here:
oshpark.com/shared_projects/if6JSkqO


Lets hope 'What it might look like..' includes values :-) Not that important I guess.

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16 Jul 2014 12:48 #24616 by SadSack
Replied by SadSack on topic Single-Board Universal Module
Fun begins, everything is here! :sick:

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18 Jul 2014 19:10 - 18 Jul 2014 19:12 #24677 by SadSack
Replied by SadSack on topic Single-Board Universal Module
Think I'll have to give in and buy some real nicotine!!!!

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Last edit: 18 Jul 2014 19:12 by SadSack.

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18 Jul 2014 22:25 #24681 by HappyHarry
Replied by HappyHarry on topic Single-Board Universal Module
are you doing this by hand?

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18 Jul 2014 23:00 #24683 by SadSack
Replied by SadSack on topic Single-Board Universal Module
I am indeed, I failed badly making stencils. Using iron and re flow blower. Easier then you think and slow as you would expect.

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19 Jul 2014 02:31 #24686 by SeByDocKy
Replied by SeByDocKy on topic Single-Board Universal Module
Incredible .....

I hope you will succeed .... How far you are from final stage ?

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19 Jul 2014 04:56 #24687 by SadSack
Replied by SadSack on topic Single-Board Universal Module
all being well should have this 1 of 3 made to day. PB has been busy with test code not sure how far off that is. Sure there will be issues with my bit, hopefully not many...

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21 Jul 2014 01:44 #24713 by PhracturedBlue
Replied by PhracturedBlue on topic Single-Board Universal Module
SadSack has done an incredible job. Soldered the entire board by hand:



There was a design flaw in the crystal pads, which he'll need to work around, but hopefully we;ll be able to test it soon
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21 Jul 2014 05:15 - 21 Jul 2014 05:18 #24718 by sbstnp
Replied by sbstnp on topic Single-Board Universal Module
Awesome job SadSack!

What was the total component cost?

Devo 10 + 4in1
Spektrum Dx9
FrSky Taranis + TBS Crossfire
Last edit: 21 Jul 2014 05:18 by sbstnp.

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21 Jul 2014 11:42 #24721 by HappyHarry
Replied by HappyHarry on topic Single-Board Universal Module
amazing work!

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21 Jul 2014 11:52 #24722 by SadSack
Replied by SadSack on topic Single-Board Universal Module

PhracturedBlue wrote: It sounds great, right? Well there are some downsides:
a) It is not something that can be hand assembled (well maybe by someone crazy, but not me). The chips are miniscule, and use leadless packages






That's me!
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21 Jul 2014 14:09 #24723 by PhracturedBlue
Replied by PhracturedBlue on topic Single-Board Universal Module
For 3 test boards, total cost was ~$150 US. That includes boards from OshPark, and parts from digikey and aliexpress, and all shipping charges (actually I don't think there were any). Not included is obviously SadSack's time.

So these boards cost $50 each (of course since we don't have a stencil, we might only get one board assembled of this batch. I will need to do a 2nd run of boards to fix the xtal, and I'll order a stencil at the same time.

Hopefully we can learn enough from this one that a 2nd spin is all we need though.

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21 Jul 2014 15:45 #24727 by JustenCase
Replied by JustenCase on topic Single-Board Universal Module
I said it before and I'll say it again...you guys ROCK! Looking forward to the test results from this batch and the updated board. I'll definitely buy a few once the bugs are worked out. I am having some issues with the original MMOD boards that I built, but I know this isn't the thread for that topic. I'm gathering notes and will be providing some info in a few days.

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21 Jul 2014 15:56 - 21 Jul 2014 15:57 #24728 by sbstnp
Replied by sbstnp on topic Single-Board Universal Module
That's actually very decent. Probably buying in bulk would drop the price some more.

Anyway, with a stencil and a hot air station I would probably have the guts to do it by hand too, but I'd rather pay $100 for a fully assembled board :)

PhracturedBlue wrote: For 3 test boards, total cost was ~$150 US. That includes boards from OshPark, and parts from digikey and aliexpress, and all shipping charges (actually I don't think there were any). Not included is obviously SadSack's time.

So these boards cost $50 each (of course since we don't have a stencil, we might only get one board assembled of this batch. I will need to do a 2nd run of boards to fix the xtal, and I'll order a stencil at the same time.

Hopefully we can learn enough from this one that a 2nd spin is all we need though.


Devo 10 + 4in1
Spektrum Dx9
FrSky Taranis + TBS Crossfire
Last edit: 21 Jul 2014 15:57 by sbstnp.

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21 Jul 2014 16:40 #24729 by SadSack
Replied by SadSack on topic Single-Board Universal Module
Not saying everyone should make there own. Once few pads are adjusted and few parts moved and my cockup fixed :whistle: Armed with a good stencil + blower ($47) and some care its doable, its not for everyone.

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21 Jul 2014 16:44 #24730 by PhracturedBlue
Replied by PhracturedBlue on topic Single-Board Universal Module
Being armed with a working prototype, I'll actually be able to approach some folks to see about manufacturing. It really depends on scale. The costs would come way down if we could build enough of them.

But that is not a topic for now. I don't need to fill up this thread with requests. Given we need a 2nd round, we are still months away from having a finalized design.

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