Make MP3 and a Holga

Who needs the iPod when you can have the HolgaPod. Use the MAKE MP3 Player kit and a Holga to make a cool portable MP3 Player.

Parts

MakeMP3 Player Kit link
Holga (broken prefered)
3 AAA
5 momentary push button switches (N.O.)
Wire
slide switch (spst)
solderless breadboard (small)

Tools

Soldering Iron
Dremel
Snips
wire stripper
screw drivers

Follow the PDF with the make MP3 kit.

Things to note, read all of the instructions, sort out the resistors, crystals and capacitors.

One crystal is marked with black, its the 25mhz one.

Also you need to use a jumper where it says mosfet (pic #2)

When soldering the chips on, many are surface mount, so take your time and use a thin tip on your soldering iron.

You need to transfer songs to a SD card, the SD card has to be formatted fat32.

Put them in the / directory of the card.

You can use a small piece of wire to test the player and try grounding pins d0 d1 d2 d3 ....

Find a Holga, they are C H E A P. They are all over ebay, and B & H usually has them for $9. Thats cheaper than most project boxes. Mine had stopped working so it become the home of the Make MP3 kit.

Unscrew the top. There are 3 screws, one on the left and two below the film winder wheel.

If yours has a flash, remove it, set it aside, cause you can do something with that... It is held in place by 4 screws.

Then snip the wires off.

Remove the battery holder if it has one.

Ok its time to hollow out the holga. I used a dremel and some big wire snips.

Do not cut the outside of the holga though, only the insides.

And try and leave two of the posts to screw the top back on.

Now drill a hole in the film winder big enough for your earphones to go through.

I wanted to use a solderless breadboard, I plan on taking the Make MP3 kit out of the holga for another project later, and this will let me have that flexibility. I had to cut one up using a dremel.

I drilled 4 holes in the front of the body of the holga for the volume and forward/backwards buttons.

The holes should be in the far corners of the body to allow room for the mp3 player kit to fit in. See pic #2 for the location.

Drill a hole in top piece for the play pause button.

Use the existing hole for the old flash power button for a new power button. Line it up and drill some holes to mount the switch.

I solder all of the buttons first before putting them in the case. Leave a nice tail of wire so you can cut it down later.

Solder the play button and then the power switch.

Put all the buttons in and make sure everything fits.

Solder all of the negatives together, and then the positive up to the switch.

Run the headphones through the wheel and the top.

Screw it back together and you are done.