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769disco and 746disco - what is the direction?

Dan Mackie
Senior
Posted on February 09, 2018 at 06:53

   ST is to be complimented for three specific design improvements apparent in the 769disco.  FIrst, it actually has a connector to the display, rather than the LCD cable being soldered directly to the board, as is typical of the 429-disco and the 746-disco. This ought to make it much easier to upgrade the system.  Furthermore, ST is actually making two versions of the 769-disco - one with a display, and one without, so we don't have to buy a system with a display, and then throw the display away because we are upgrading the system to a larger brighter display to be sunlight visible.  The third is that the 769disco has mounting holes, as does the 746disco, where the 429disco has none.  I have wanted all of those improvements with other systems we have bought from ST through distribution.  Thanks for the progress ST!

   However, I also have a question or two.  One, I would like to see downloadable full system source kits including the CubeMx project file, for all boards, starting with the 769disco, of course!  It would make it a lot easier to adapt the system, rather than having to puzzle out what device support is required.  If you have not had to do that, lucky you.  ST, please make this happen soon.  You should find that to be dead easy, and VERY popular.

   Two, I would like to see better stability in the product mix available.  We shipped multiple 746disco units that we upgraded to  7' sunlight visible LCDs, and now find that there are no more 746disco units available here, and only electronic rumors of 87 being available at Newark UK.  Newark in Canada has not be able to nail down their UK options for us to date.  Digikey, Arrow, and Future have no stock of the 746disco at all.  However, there are nearly 1000 pieces of the 769disco available, so we are checking out the 769disco because we are forced to, not because we want to.

   I am sure we can be criticized for having shipped systems with xxx-disco units, and be told that we should have built our own boards to ship.  However, if what ST is doing with chips is good, what is wrong with using their boards too,

instead of only using their board designs?   If what you are doing is selling, figure out how to sell more of it, and keeping stock in the distribution channels sounds like a good move.  Dropping product availability significantly makes the marketplace wonder what is really happening.

   If you agree or disagree with the points above, say so.  If enough of us encourage ST in the right direction, they might actually go there!

Dan

#downloadable-full-source-kits #stability-of-product-mix
23 REPLIES 23
john doe
Lead
Posted on February 10, 2018 at 00:06

you should probably at least glance at the licensing agreement.  just sayin'.

http://www.st.com/resource/en/license_agreement/evaluationproductlicenseagreement.pdf

 
T J
Lead
Posted on February 10, 2018 at 01:48

stm.013

thanks, I guess we should have a look at the agreement that we all signed.

Mackie.Dan

‌ As you can see by the agreement, you are not supposed to use these eval units in a commercial machine.

Hence, did you consider making your own boards ? I use Kicad, well recommended and FREEEEEEE

We have just purchase our own pick n place, for $10k.

SMT460

https://www.youtube.com/watch?v=OgxhMpkzvdA

Posted on February 10, 2018 at 00:49

Good comment, thanks.

Posted on February 10, 2018 at 06:05

We have used Pulsonix for circuit board design, and had to design our own boards, since the ST boards are admittedly not suitable for direct interface, because they have deliberately avoided that, it seems.  However, the line between using a chip from ST, and a circuit board from ST with the chip on it seems to be a extremely fine line, from my point of view as a genuine customer of ST, not a competitor of theirs.  It seems we are splitting that hair in this game.  We have not tried to present the ST boards as our own, and have no intention of ever so doing.  I would expect the content in the document referred to above is more directed at ST defending themselves against competitors, rather than restricting customers.  Usually having a supplier sue a real customer is quite unhealthy PR for the supplier, I would think.  Granted I am not ST, and cannot presume to know their intentions.

Posted on February 10, 2018 at 07:21

it is likely an insurance and blame issue...

Joerg Wagner
Senior III
Posted on February 10, 2018 at 20:13

You should wait for 743DISCO.

Joerg Wagner
Senior III
Posted on February 11, 2018 at 00:05

Order at mouser, they have 1,215 in stock.

Posted on February 10, 2018 at 23:06

But I can die waiting.  Until there is stock in the distribution pipeline, planning on it makes no sense to me.

john doe
Lead
Posted on February 11, 2018 at 01:10

This stuff is literally all open source. the bill of materials and gerber files are freely available. I'm willing to contract a batch getting built and sell you an unencumbered lot!