Need help! Motorized in-dash LCD enclosure semester project.

**89ragtopgt** · 03-08-2005, 11:02 PM

this in the up position

**davesaudio2** · 03-08-2005, 11:07 PM

what- no solidworks?
(joke)

**Scouse Monkey** · 03-09-2005, 07:14 AM

89ragtopgt, not trying to crap on your ideas - any idea is good - but you need to do some scale drawings with a true 2 inch (50mm) DIN height and true LCD size as you need to give enough clearance for the screen to rotate round. Making a screen hinge at the bottom is easy (like all commercial in-dash screens) but making one hinge off centre is hard as the screen has to come out further to enable it to rotate.

Also it would be better if you could allow some way of the screen to have adjustable tilt and yaw for glare reduction with a memory so it always returs to the same position.

Andy

**joebagodoe** · 03-09-2005, 04:59 PM

Originally Posted by Scouse Monkey

89ragtopgt, not trying to crap on your ideas - any idea is good - but you need to do some scale drawings with a true 2 inch (50mm) DIN height and true LCD size as you need to give enough clearance for the screen to rotate round. Making a screen hinge at the bottom is easy (like all commercial in-dash screens) but making one hinge off centre is hard as the screen has to come out further to enable it to rotate.

Also it would be better if you could allow some way of the screen to have adjustable tilt and yaw for glare reduction with a memory so it always returs to the same position.

Andy

These features would be amazing, but is this the caliber design RPI Geek is implementing? It may be a little over the top for a semester build.

**joebagodoe** · 03-09-2005, 05:14 PM

Some nice things to look at:
http://www.digitalww.com/DWW-700M.htm
http://www.digitalww.com/IH002.htm

**Scouse Monkey** · 03-09-2005, 05:15 PM

Originally Posted by joebagodoe

These features would be amazing, but is this the caliber design RPI Geek is implementing? It may be a little over the top for a semester build.

I have a rough design done with most small points ironed out but have had not ime to develop it and then the digitalww screen came out.

My design was based around the linITX style screen and uses quite a few servos and is active so self corrects if the screen is knocked.

**RPI Geek** · 03-09-2005, 06:53 PM

Originally Posted by 89ragtopgt

I am getting this ready in the next 2 weeks. i have used a motor drive from a scaner and made it just like a mini garage door opener with a belt drive. the display is mounted to a frame with 4 bearings that roll in a track. the front pivot point will articulate the display up when it comes to the end of the housing. when the front bearings hit the front of the housing the motor will still drive the arm with pivots down forcing the display to rotate up. this should work give me any more ideas if you can. this is my first posting and will show you pictures of the rest of the progress as it comes.

The first problem that I see with that design is what Scouse Monkey already said: it's not to scale; the LCD is bigger than that, even with the control circuit board removed. I had thought of that design, but now I think I came up with something even more compact, I just want to do the math before I say any more about it

When you say you are getting it ready in the next 2 weeks, what do you mean? Are you planning on building a prototype? If so, I have a few things I'd like to talk to you about, send me an e-mail please.

Originally Posted by joebagodoe

These features would be amazing, but is this the caliber design RPI Geek is implementing? It may be a little over the top for a semester build.

That is a bit more than I was planning on doing because at first only one person responded with interest in it, but now that I am getting more feedback, I'll definitely keep it in mind. My immediate thought is that I'll make it manually adjustable to about 20 degrees or so; if anyone has any feedback, please tell me or else I won't know!

Originally Posted by Scouse Monkey

I have a rough design done with most small points ironed out but have had not ime to develop it and then the digitalww screen came out.

Mind sharing? I'm open to new ideas.

**Scouse Monkey** · 03-10-2005, 05:03 AM

Originally Posted by RPI Geek

The first problem that I see with that design is what Scouse Monkey already said: it's not to scale; the LCD is bigger than that, even with the control circuit board removed. I had thought of that design, but now I think I came up with something even more compact, I just want to do the math before I say any more about it

When you say you are getting it ready in the next 2 weeks, what do you mean? Are you planning on building a prototype? If so, I have a few things I'd like to talk to you about, send me an e-mail please.

That is a bit more than I was planning on doing because at first only one person responded with interest in it, but now that I am getting more feedback, I'll definitely keep it in mind. My immediate thought is that I'll make it manually adjustable to about 20 degrees or so; if anyone has any feedback, please tell me or else I won't know!

Mind sharing? I'm open to new ideas.

If you want to have the LCD separate from the controller you will have to also extend the ribbon cable for the touchscreen and the inverter (be very careful as this is 600V or summit). This would be the neatest way to do it as it would be a lot thinner and smaller but you would probably have to put the controller and touch controller and inverter on a bogey thet translates out with the screen.

As for my ideas, the slide out mechanism is differential so that the yaw is controlled by the same screwjacks that translate the screen outwards. and the tilt is controlled by 2 powerful servos that are wired up to the same encoder so they don't fight each other. This eliminates the need to make any hinges for the tilt and as these servos are always on when the screen is out they resist movement. The angles ar eall controlled by dials using simple 555 circuits and also switches to activate tilts etc with the screen coming fully out, tilting and then moving back towards the dash and setting the angle as required. If the screen is tilted such that it will hit the dash then it moves out to prevent it getting stuck. I can also have position memories so you can press a button for straight ahead for everyone to see or driver setting etc.

**sxott** · 03-10-2005, 08:05 PM

BTW scouse I love your avatar... I just had to tell you it is awesome

**89ragtopgt** · 03-11-2005, 10:43 PM

well looking at my previous post and reading others, i have come up with a better and more compact motorized display that uses one servo to move the tray out of the dash and another to rotate it up. now what we need is a programable controler to run these. any one have any ideas for this?, this one that i am bulding will need to move out of the dash then rotate up and pull back in. then to close move out rotate down then move back in. help!!! will be making the sliding frames out of extruded picture frame aluminum. this will also house the lcd. will look and function great.