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Hove
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Touch screen keyboard for Official RPi 7" touch screen

Wed Sep 09, 2015 8:33 am

A brief look on line suggests "florence" is suitable as an X on-screen touch keyboard http://xmodulo.com/onscreen-virtual-keyboard-linux.html. It's included in the Raspian distribution, so when my screen arrives (later today hopefully) I'll give it a go and report back.
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Hove
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Re: Touch screen keyboard for Official RPi 7" touch screen

Thu Sep 10, 2015 12:14 pm

Florence works - I need to tinker with her size and find out why all the non-standard keys don't show (possibly font related), but the 7" screen and florence work together well
DSC00870.jpg
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Hove
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Re: Touch screen keyboard for Official RPi 7" touch screen

Thu Sep 10, 2015 1:39 pm

Oops, don't know what happened to that last picture, but here's a better one:
DSC00872.jpg
7" touch screen with florence
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Both powered by a 5V 2.1A battery bank by Vinsic
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Hove
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Re: Touch screen keyboard for Official RPi 7" touch screen

Thu Sep 10, 2015 5:47 pm

1st lesson - don't mess with florence - her default settings are the best; After my experimentations, the keyboard is black on a black background with black highlights. Know where was the reset key for florence's config?
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rpdom
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Re: Touch screen keyboard for Official RPi 7" touch screen

Thu Sep 10, 2015 6:41 pm

Hove wrote:After my experimentations, the keyboard is black on a black background with black highlights.
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Re: Touch screen keyboard for Official RPi 7" touch screen

Thu Sep 10, 2015 6:48 pm

My towel is ready and my cuppa brewing!
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Re: Touch screen keyboard for Official RPi 7" touch screen

Fri Sep 11, 2015 12:58 am

Have you got a battery pack plugged into the USB port in your photo?

I want to build a Raspberry Pi Tablet, that would be ideal for controlling things over a network. :P
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ame
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Re: Touch screen keyboard for Official RPi 7" touch screen

Fri Sep 11, 2015 1:08 am

Hove wrote:1st lesson - don't mess with florence - her default settings are the best; After my experimentations, the keyboard is black on a black background with black highlights. Know where was the reset key for florence's config?
Please do not press that button again.

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Re: Touch screen keyboard for Official RPi 7" touch screen

Fri Sep 11, 2015 5:33 am

Woll wrote:Have you got a battery pack plugged into the USB port in your photo?

I want to build a Raspberry Pi Tablet, that would be ideal for controlling things over a network. :P
Yes, the Raspberry Pi 'tablet' showing in the photo is running from a 5V 2.1A battery pack you can see in front of it. The battery is plugged into the 'video card' and the Vout from the video card has another USB cable to the Raspberry Pi's USB power socket.
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Hove
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Re: Touch screen keyboard for Official RPi 7" touch screen

Fri Sep 11, 2015 6:51 am

Here's the rear view showing the power cables between the video card and Raspberry Pi - case is a Pimoroni in Flotolla sea-green / blue
DSC00873.jpg
Backside
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Attachments
DSC00873.jpg
DSC00873.jpg (50.54 KiB) Viewed 14495 times
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Re: Touch screen keyboard for Official RPi 7" touch screen

Fri Sep 11, 2015 10:41 am

You should do a Tablet article for Magpi.
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Re: Touch screen keyboard for Official RPi 7" touch screen

Fri Sep 11, 2015 7:18 pm

Did you find a solution to the missing keys?
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Re: Touch screen keyboard for Official RPi 7" touch screen

Fri Sep 11, 2015 7:47 pm

No, I think it's a font thing as I said, and to be honest, they are mostly not hard to work out - other than the five on the left hand side there rest are what you'd expect.

Worth reading here generally about florence config - I think this is for the level of florence on jessie rather than wheezy, but most of it is relevant to both.

I'm still fiddling with the settings - once I have a good set, I'll post them. Transparency between buttons doesn't work, I presume an unsupported GPU function; buttons always seem to be black with no texture rendering, again GPU limitation, I'm guessing. Be very careful with resizing the window - it's hard to recover a keyboard that's only 1 pixel high
. Also beware of opacity settings - keep the value high or you'll never be able to work out which key is which.

I finally have florence with "raspberry pink" characters on a black background. I'll keep trying but I think the GPU rendering engine doesn't support some of the features florence does.
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Hove
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Re: Touch screen keyboard for Official RPi 7" touch screen

Sun Sep 13, 2015 8:48 am

Might be, I'll try it out - thanks!
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Re: Touch screen keyboard for Official RPi 7" touch screen

Sun Sep 13, 2015 2:08 pm

Here's the piPad - ended up powering video card and RPi separated rather than feeding RPi off video PCB - always got the rainbow power warning top right of screen otherwise. Like her raspberry keyboard?
DSC00877.jpg
piPad
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Dr H
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Re: Touch screen keyboard for Official RPi 7" touch screen

Sun Sep 13, 2015 7:29 pm

I have tried the Matchbox keyboard and it is working reasonably well.

I used the same construct as above, with a USB connection between the screen and the RasPi. I have been using an external battery pack (2A) and various USB power supplies. In all cases I got the power indicator/rainbow square, but the system was running well.

Using a plastic tablet stand from IKEA (ISBERGET, http://www.ikea.com/de/de/catalog/products/20302596/ ), I have built a frame for the screen with the RasPi attached externally to the stand. I will try to post some pictures of it tomorrow.

In general the Pi and the screen were working well, but especially in combination with audio control, the system was hanging several times.

ame
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Re: Touch screen keyboard for Official RPi 7" touch screen

Sun Sep 13, 2015 10:13 pm

Hove wrote:ended up powering video card and RPi separated rather than feeding RPi off video PCB - always got the rainbow power warning top right of screen otherwise.
Interesting. This chap has the same (similar?) problem:
viewtopic.php?f=28&t=120463

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