exxos blog - random goings on

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Re: exxos blog - random goings on

Post by IngoQ » Fri Oct 16, 2020 7:51 am

Cool :mrgreen: If they now would integrate pick & place you would have a completely automated smt production on your desktop... very impressive.
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Re: exxos blog - random goings on

Post by sporniket » Fri Oct 16, 2020 8:07 am

With the help of 3d printed guide like posted some time ago, I can see that the manual pick and place ought to be be easier though.

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Re: exxos blog - random goings on

Post by exxos » Fri Oct 16, 2020 2:16 pm

I designed these adapter a while ago and @PhilC Built a couple of for us to test out..

These seem to work well but definitely need a heatsink, I guess it is a little unfair as the ceramic package is technically a heatsink already... The plastic package I had up to 57c , with a heatsink it is around 44c, which is about what I was seeing on the ceramic package anyway.

There is more of a test to see what the service mount version of the CPU was capable of and also that the ceramic one seem to be very problematical for sourcing.. It isn't really ideal to have the adapter, but I guess it could be a option if the TF536 was redesigned at any point it could actually use the SMT version.

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Re: exxos blog - random goings on

Post by stephen_usher » Sat Oct 17, 2020 5:36 pm

That's actually very interesting.

Would this board be able to be soldered directly onto the TF536 board? If so that would potentially reduce the height of the board by a few mm.

In my project to get a TF536 into an STFM and fit the keyboard and top case height is my enemy. From my current state the total stack is about 1cm too tall at the front. My redesigned relocator should be able to remove about 3mm, soldering the 68000 and TF to the relocator should save a similar amount, so being able to reduce the CPU on the TF by a similar amount would bring this down to around the right height.
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Re: exxos blog - random goings on

Post by PhilC » Sat Oct 17, 2020 6:34 pm

@stephen_usher you could also solder it underneath the TF536.
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Re: exxos blog - random goings on

Post by stephen_usher » Sat Oct 17, 2020 10:07 pm

PhilC wrote:
Sat Oct 17, 2020 6:34 pm
@stephen_usher you could also solder it underneath the TF536.
Not really, as the 68000 is directly below on the new board and once the TF536 installed without a socket (soldered to the board, as it will be eventually) there will be no room underneath.
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Re: exxos blog - random goings on

Post by exxos » Sat Oct 17, 2020 11:51 pm

@stephen_usher why not just rotate the TF536 and have the CPU towards the PSU where there is more height ?
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Re: exxos blog - random goings on

Post by stephen_usher » Sun Oct 18, 2020 8:55 am

There's the IDE interface on that side. I did look at all possible locations and orientations, again and again.
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Re: exxos blog - random goings on

Post by stephen_usher » Wed Oct 28, 2020 12:19 pm

I guess that these adapters aren't going to appear in the shop and they were only ever an experiment.
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Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
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Re: exxos blog - random goings on

Post by exxos » Wed Oct 28, 2020 4:34 pm

stephen_usher wrote:
Wed Oct 28, 2020 12:19 pm
I guess that these adapters aren't going to appear in the shop and they were only ever an experiment.
Wasn't planning on selling them no. Might still have a couple PCBs if you want some.
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