Capacitive Touch

Capacitive Touch Driver Wanted!
Newhaven Displays have recently released  3.5" 4.3"' & 5" TFT displays
including capacitive touch screen. Displays use 24-bit RGB interface.
See Link: http://www.newhavendisplay.com/featured-products-c-315.html
Displays are also available from Digi-Key & Mouser.

Capacitive Touch display uses FocalTech FT5x06 Capacitive Touch Controller.
$1000 for first person to provide working android driver for these displays
including capacitive touch for use in Mini210 / Tiny 210.

Hi Steve

Nice find. I am interested in this display myself so I may have a go at
this but it won't be for a few months.

I have found this though. The kernel driver code for the Nook tablet uses
this I2C device.

https://github.com/fat-tire/nook_tablet_kernel/blob/master/drivers/input...

The LCD should be simple enough just from changes in the timing etc for the
existing 5" LCD that comes with the Min210 but I am not 100% familiar yet
with kernel coding. This is why this is of interest to me.

Lets hope the $1000 offer brings you closer to your goal.

Dave...

Hi Steve, 

Are you still looking at this? I purchased 2 of those displays from
Newhaven for another project but I noticed that the source that has been
released for 4.0.3 has a FT5x06 driver in there so the chances are that it
may just work. Video timing may need changes to the kernel of course but I
don't see any reason that the touch should not just work out of the box.

Hi Dave and Steeve,

Just for my information, how do you plan to plug this screen to the Mini,
do you have some kind of adaptator to do the trick?

We would need to make a PCB like the current design. This would then have
the same cable connection as the current 7" LCD so would be a plug in
solution. We also need to put the backlight driver on this PCB as there is
nothing on the Mini210 or Tiny210 main boards for this.

I am designing a PCB for the 5" LCD just now for a .NETMF project and once
this works, it would simply be a case of laying out a new PCB to meet the
pinout of the Tiny/Mini210.

I'll keep an eye on your work, especially on the adaptator you plan to
make. You seem to have access to some professional material out of range
for a hobbyist like me. This can be an idea to have a bigger and capacitive
screen working on the Mini2440 also.

Hi Screwface.

I have Altium Designer for my PCB design software. It is high end and out
of reach of the hobbiest even after we have repeatedly told Altium that a
limited version for home use would introduce more people to it.

For home use you can get Eagle which as far as I have seen, can handle very
well the SMD devices you would need for doing the PCB's for FA boards.
Soldering takes a bit of practice with 0.5mm pitch connectors but it can be
done. I do it all the time with prototypes.

I'll keep you updated on the LCD progress.

Hi Dave,

I already used Eagle and it is powerful enough for a hobbyist use. The
problem is more on the printed circuit realisation, as it requires some
material and chemical products. And soldering SMD / CMS connectors and
chips is not so easy as you mentionned. But not impossible!

Hi Screwface. I stopped doing my own PCB's a long time ago. There are
plenty of companies now offering low cost professional PCB's for one off at
low prices.

I use ezPCB in China and I get top quality PCB's from them.

In Europe, there is PCB-Pool and in the USA there is a number of choices.

Just send them your Gerber files and you get back a nice professional PCB
with soldermask and silkscreen printed legends etc. The soldermask makes
the soldering of SMD much easier.

By the way, I have completed the 2 PCB's for the 4.3" and 5.0" LCD's and
after I check them I will send them on Monday to get made up. Once I have
them working with my other system I will lay out the PCB for use with the
Tiny210 which should then work for the Mini210 to as long as you have the
capacitive driver built into your OS of choice.