Hi
I think this one is more suitable:
https://eu.mouser.com/ProductDetail/Texas-Instruments/DLP2000AFQC?
qs=T3oQrply3y%252B2%252BSUG%252B1A5CA%3D%3D

The board is connected through an FQC 42 connector socket, which I'm
right now unable to find online.
I guess I've gotta do some more digging on Alibaba and so on, in order
to get my hands on one of those.

Cheers
-lev

On Friday, April 30, 2021 3:34:10 PM WEST Martin Geisse wrote:
> Hi,
>
> I'm not sure who would be interested in buying a cheap makeshift
> spin-coater since you cannot get anywhere with just that, and it's
> super-easy to make yourself. For somebody who wants to make their own
> chips, a much more interesting target would IMHO be a development board for
> the DMD chip, even if it is nothing more than power, capacitors and a pin
> header for everything else. The DMD chip has an LGA package, and another
> one I found at TI has a PGA package, so that's a bit tough to solder by
> hand. There are dev boards available, but they are basically a simple
> projector (e.g. including optics) [1] -- maybe it is possible to modify
> that instead of a full projector.
>
> [1]
> https://www.mouser.de/ProductDetail/Texas-Instruments/DLPDLCR2000EVM?qs=BZBe
> i1rCqCAQetmBz0G1xQ==
>
> Anyway, I can't tell you the model of the fan/motor since it is one of the
> case fans of the DLP projector I took apart. I'm pretty sure that I can get
> a better PC case fan for 2€ at the next supplier for computer parts.
>
> WRT financing, let me repeat that I'm willing to spend money on even the
> simplest chips, at this point even a single MOSFET, if they prove that the
> whole idea isn't vaporware. I'm pretty sure we can find more people that
> feel the same when the first actual device gets posted to Hackaday and
> similar sites. Also, a Patreon site like [2] may help, but again, only if
> you can actually present something working (that guy can't). I think Sam
> Zeloof neglected this too much and didn't give people an easy way to send
> him money, because I'm convinced he would have gotten a lot of it.
>
> [2] https://www.patreon.com/user?u=14363159
>
> Greetings,
> Martin
>
>
>
> On Fri, Apr 30, 2021 at 2:52 PM David Lanzendörfer <
>
> leviathan@libresilicon.com> wrote:
> > Hi
> > So I've now set up the office here with tables and stuff and could
> > reproduce
> > your experiments.
> > If we know which motor performs ok for building a cheap spin coater, I
> > could
> > actually build one a little bit more professionally, by ordering some of
> > those
> > motors from Aliexpress.
> > We could then sell those coaters on eBay and finance LibreSilicon
> > a bit with it.
> >
> > What do you think?
> >
> > Cheers
> > -lev
> >
> > On Wednesday, April 28, 2021 6:36:11 PM WEST Martin Geisse wrote:
> > > Hi,
> > >
> > > > If I remember correctly the spin coaters used in clean rooms first
> > > > spin
> > >
> > > up the wafer and then dispense the liquid
> > >
> > > That did the job. I still think that the RPM is quite low because the
> > > fan
> > > is too weak, and I might later switch to the power drill to improve
> > > that,
> > > but applying the liquid only after the motor is spinning is definitely
> >
> > very
> >
> > > important.
> > >
> > > > You need to dispense liquid in middle of wafer as liquid will online
> >
> > move
> >
> > > outwards.
> > >
> > > Obviously :)
> > >
> > > > I guess, you're experiencing problems because you didn't apply a
> > > > primer
> > >
> > > first.
> > >
> > > I only did a test, spinning oil onto a coin. I guess that the primer
> >
> > helps
> >
> > > with wetting and/or sticking to the wafer surface, which wasn't (yet) a
> > > problem in my test. Anyway, good to know!
> > >
> > > Greetings,
> > > Martin
> > >
> > >
> > > On Wed, Apr 28, 2021 at 5:06 PM David Lanzendörfer <
> > >
> > > leviathan@libresilicon.com> wrote:
> > > > Exactly.
> > > > First you've gotta spin up the wafer, and then you've gotta dispense
> > > > it
> > > > kind of towards the center, but it's not so critical.
> > > > I guess, you're experiencing problems because you didn't apply a
> > > > primer first.
> >
> > https://www.3mdeutschland.de/3M/de_DE/unternehmen-de/produkte/~/3M-Silan-G
> >
> > > > las-Primer-Transparent-1-L-Flasche/?N=5002385+3294237313&rt=rud
> > > >
> > > > Cheers
> > > > -lev
> > > >
> > > > On Wednesday, April 28, 2021 12:24:57 PM WEST Staf Verhaegen wrote:
> > > > > On wo, 2021-04-28 at 11:23 +0200, Martin Geisse wrote:
> > > > > > Hi,
> > > > > >
> > > > > > - spin coating
> > > > > >
> > > > > > I finally tried to build a makeshift spin coater the way Sam
> > > > > > Zeloof
> > > > > > did, by mounting a plastic can on top of a CPU fan (actually a
> > > > > > case
> > > > > > fan from another device I had lying around). I can't say this is
> >
> > the
> >
> > > > > > way to go... the fan is way too weak to spin the can at a
> >
> > meaningful
> >
> > > > > > speed. It is also very hard to center the can exactly, so it
> >
> > wobbles
> >
> > > > > > a lot and that probably reduces the speed even more. Mounting a
> > > > > > die
> > > > > > without a container would allow the fan to spin faster, but would
> > > > > > likely clog the fan with chemicals in no time. I'll next try my
> > > > > > original idea, to mount the can to an axle that I'll stick into a
> > > > > > power drill.
> > > > > >
> > > > > > One thing I did find out is that the coating liquid should be
> >
> > evenly
> >
> > > > > > applied before spinning. It will NOT spread to the whole surface
> > > > > > by
> > > > > > itself, but rather run to a single direction in a concentrated
> > > > > > stream, probably due to surface tension.
> > > > >
> > > > > If I remember correctly the spin coaters used in clean rooms first
> >
> > spin
> >
> > > > > up the wafer and then dispense the liquid. You need to dispense
> >
> > liquid
> >
> > > > > in middle of wafer as liquid will online move outwards.
> > > > >
> > > > > greets,
> > > > > Staf.
> > > >
> > > > _______________________________________________
> > > > Libresilicon-developers mailing list
> > > > Libresilicon-developers@list.libresilicon.com
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