Mechanical Design

> Main Page > Piano Expander based on Pianotec and Odroid-N2

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Used components

• Remark: Some of the components used here seem to be very strange to you because the maybe not available anymore on the market. The reason why I have used those components is very simple - I have just found them in my stock. Please feel free to use other components....
• The following components are used on my "prototype":

1x Odroid-N2 with 2GB Ram
1x Odroid-N2 EMMC module
1x Joy-It RB-LCD10 10 inch touch-display
1x RND Electronics RND 455-00355 Flat plastic enclosure ABS IP 65
2x ELV Low-voltage-headphone-amplifiers based on MAX4409
2x Analog Device SSM2142 Balanced Line Drivers for symmetrical 
    audio output on XLR connectors
3x Elektor MIDI Breakout-Boards (MIDI-BoBs PCB No. 190070-1), 
    (1x configured for MIDI-IN, 1x configured for MIDI-THRU and 1x configured for MIDI-OUT
1x Notebook-Style desktop-power-supply with 12V/2A and 5V/2A (formaly used for an 
    external 5 1/4 inch HDD-case)
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more coming soon

Used Power-Supply

• I've found a desktop-power supply which was originaI used for an external 5 1/4 inch hard-drive. It provides 12V / 2A and 5V / 2A thus exactly what is neede for the piano expander.
• 5V / 2A for the Joy-It Touch-Display
• 12V / 2A for the Odroid-N2

• The connector which was used on this power-supply was a Mini-DIN4 Power Plug (PP).

Picture Gallery

Mounting the Touch-Display into the housing

View onto the Touch-Display electronics

Backside of the Housing with mounted Odroid-N2 module

• Rear-Side of the housing without the breakout for the Odroid-N2 module

• Rear-Side of the housing with the mounted Odroid-N2 module

• Fastening the Odroid-N2 module in the housing

Position of the MIDI-Breakout-Boards

Rear-View

Side-View

Cut-away view

Piano-Expander Rear-View

Power-Socket and MIDI-Breakout-Boards mounted into the housing

Headphone-Amplifiers mounted into the housing

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> Main Page > Piano Expander based on Pianotec and Odroid-N2