Archive

Posts Tagged ‘projector’

Projector Images in the dark!

September 8th, 2011 3 comments

Following my “teaser” post, I have to show you what I got:

A little distortion is already evident.

This is with a polarized filter. It is clearly visible.

The bottom is perfectly straight, but the top of the image has a little “bow” to it.

These are the focus test on a piece of A4 paper. both are focused, but the projector is too bright for the camera and the edges are bleeding. There is also a little aberration visible on top, otherwise a descent result.

Measurements of the image will follow with the different Macro Lenses.

Hope your build is going better than mine!

 

 

Categories: Projector Tags: , , ,

First Projector Image Size Test

September 7th, 2011 1 comment

Ahoy! After a well deserved vacation, I push on…

After my initial tests with an Acer x1130 and 52mm Hoya Macro lens, I have ordered some 72mm Macro Lens from Ebay.

Here they are a 72mm +1 +2 +4 +10.

You can see they are white with a slight bluish tint, but far from the cheap green glass lens and magnifiers that look like a coke bottom glass.

 

Whoops! A little teaser from my next post.

Cheerio!

 

 

 

Categories: Projector Tags: , , ,

Mounting the Dell 5100MP

August 15th, 2011 9 comments

A little more progress made. I have mounted the projector to the frame.

Supplies:

Washers 18mm x 1mm M6 – 10pcs.

Socket wrench + 10mm socket.

Screwdriver ( No, not the one with the Orange Juice! It is too early to drink! ) depending on the M3 bolt heads.

M3 x 25mm bolts – 3pcs.

M6x20mm bolts – 3pcs.

Standoffs – 18mm x M4 – 3pcs.

 

For the purpose I dug up an old aluminum heat sink (120mm X 150mm) , but you can use an aluminum flat piece 4mm thick and with a proper size for your projector mounting holes. Disregard the 90 Degree bend.

The easiest way ( since projector manufacturers do not provide you with a bolt pattern like water heater manufacturers do) to create and transfer the mounting hole location is on a piece of paper. Mark the hole locations and attach with tape to plate ( after you center it, of course ), and drill the holes ( in my case on the 5100MP they are 3mm ) a little bigger ( 3.2mm ) than the bolts to be used. Check for fit. Check that no vent or air holes are blocked ( read further below and you will see ).

Then drill holes for the bracket to frame bolts 6mm ( similarly a little bigger that the bolt size 6.2mm).

As in the post about the Power supply, get more washers than just needed ( these are also 18mm, but for the M6 bolts ) and M6x20mm bolts.

I used 3 M6 in a horizontal pattern – did not follow some specific distance between them, just two near the end and one in the middle.

 

As seen I had to add spacers, because the mounting plate covered a vent hole on the bottom of the projector and also to clear the washers and nuts used to mount the plate to the frame.

I had to also countersink the M3 x 25mm bolts a little(2mm)with a 5mm drill bit, so they screw in further in the projector frame and I have a more secure projector-plate connection.

And the end result looks like this:

Nicely done! Now you can get that screwdriver with Absolute.