ScottTV: A Simple Media Player For My Autistic Son

Hardware components:
	Wood Plate 1220x80x18mm	×	1
	Wood Plate 1220x75x18mm	×	2
	Wood Plate 764x75x18mm	×	2
	Different colors and protector paint	×	1
	Acrylic glass plate 8mm Size depends of the used screen	×	1
	Raspberry Pi 1 Model B+	×	1
	Lcd Monitor	×	1
	1 Usb Stick	×	1
	Pc Speakers	×	1
	Power supply 5V 4A	×	1
	1 Wifi Stick	×	1
	55mm Pipe Stop End For the Piezo Buttons	×	6
	BC548 For the Piezo Buttons	×	6
	Ne555 For the Piezo Buttons	×	6
	10K Resistor For the Piezo Buttons	×	12
	330R Resistor For the Piezo Buttons	×	3
	56K Resistor For the Piezo Buttons	×	6
	1N4148 Diode For the Piezo Buttons	×	6
	10nF For the Piezo Buttons	×	12
	10uF For the Piezo Buttons	×	12
	Led 3mm For the Piezo Buttons	×	6
	Piezo Speaker Element min. 20mm For the Piezo Buttons	×	6
	BC547 or equivalent NPN Transistor For the adapter circuit	×	7
	IN4148 For the adapter circuit	×	6
	Resistor 10k For the adapter circuit	×	7
	Resistor 1k For the adapter circuit	×	6
	screw terminals 3 pin For the adapter circuit	×	2
	screw terminals 4 pin For the adapter circuit	×	1
	40 Pin Connector For the adapter circuit	×	1
	Piezo Buzzer 5V For the adapter circuit	×	1
	Wires and connectors	×	1
	Wireless Socket 433Mhz	×	1

STORY

A media player nearly indestructible an controllable with 6 Buttons to choose a movie

Hi all,

I want to show you this media player for my son Scott.

He has autism, so the challenge was to make it simple, robust and easy to clean.

So I build this device with 6 Big Buttons. The media menu shows a preview of 6 cartoons. If the button next to the preview is pushed, this movie is played. Now all the buttons are offline for 5sec.

If you push any of the 6 buttons, the movie stops and the player jumps back to the main menu.

It’s based on a Raspberry Pi B+

Scott loves it:

Build instructions

Step 1: Woodworking

Cutting a hole in the wood plate. I took the dimensions of the LCD screen and I added 1 cm on each side. Drilling 48mm holes for the buttons and test if everything fits.

Fill all the irregularities with wood paste.

On the bottom 2 cut outs for the foot bar.

Step 2: Paint Job

After sanding the whole thing, I sprayed a few layers of gray ground paint.

All painted with red paint. I used a small projector to put an Image of Shin Chan on the front. Then I drew the picture and colored it with Acryl colors.

Now 2 layers of transparent protector paint:

Step 3: The Big Piezo Buttons

I need a few robust buttons. I could not find buttons in a certain size, so I decided to create my own.When you push or tap the front side of the button, you will get an impulse of +-1sec. The piezo will generated a small impulse, which is amplified by a transistor. A Ne555 in monostable mode gives me a 1sec impulse.

I used a 55mm Pipe Stop End. I sand the piece to remove the irregularities. In the pipe stop end, I glued a 35mm Piezo element inside it with super glue.

I painted the Button yellow.

I used a piece of plastic angle and cut 2 small pieces of it. With Hot glue they are kept in place and with epoxy glue they will stay there forever. I drilled 2 small holes in the angels to fix the PCB.

Read More: ScottTV: A Simple Media Player For My Autistic Son