【委託】yellowbrickroad

* This product is sold on consignment from 3araht.
* If you have any questions about this product, we will contact the consignor.
* We may not be able to provide sufficient support in languages other than Japanese.

Yellowbrickroad MIDI keyboard kit

"There’s no place like home.” I designed this keyboard since I wanted to go back to Kansas, LOL.  yellowbrickroad is a MIDI keyboard which has 53 keys (= 4 octaves+ ) to play notes. Raspberry Pi Pico is used as the "brain" of yellowbrickroad.  
Size: 20 cm (approx 8 inches) x 23 cm (approx 9 inches).  
It fits in an A4 / Letter size paper. 

Features

• Layers: Chromatic layout, chords, Chromatic + chords, Heptatonic scale, and Pentatonic scale are supported by default.
• Layouts are configurable by REMAP.  
• Sustain pedal supported.  
• It could be lit up by LED.  

What is in the kit?

• A circuit board x1
• A bottom plate x1
• M2 spacer x15
• M2 screws x30
• Cushion stickers x15
• A rotary encoder (wheel type) x1 (for transpose. **Please prepare a rotary encoder in the middle separately.)
• A reset switch x1
• A TRRS connector x1 （for optional sustain pedal.）
• Diodes x 56 (=for keyswitches x53+ for rotary encoders x2 +for sustain pedal x1)

What needs to be prepared separately:

• Raspberry Pi Pico x1
• Cherry MX compatible key switches (5-pin type recommended) x53
• Key caps for MX type keyswitches x53
• A Rotary encoder(with a knob) x1 (for settings and system volume adjustment)
• microUSB cable x1
• Soldering iron sets, tweezers, screwdrivers, etc.
• PC or Mac (Required for flashing a Raspberry Pi Pico. Flashing it is not supported by iPhone / iPad)
• MIDI software (Win: Piano 10, Mac: GarageBand, for example.)

Optional components to be prepared:

• 20 pin 2.5 mm Conthrough x2。 They are not necessary if a Raspberry Pi Pico is mounted directly on the surface if the circuitboard.
• LED: SK6812mini-E x56 pcs (for lighting up the keys) for key switches x53 +rotary encoders x2 + sustain pedal x1.
  ※    SK6812mini is not supported. Make sure to use SK6812mini-E.
• A sustain pedal (Normally-off type. Recommended to use polarity-selectable model) ＋ mono-jack to mono-mini jack adapter cable

Details・Build guide

Check the link below:
https://github.com/3araht/yellowbrickroad

Notes

• Soldering is required to build the keyboard.
• Kailh low profile keyswitches are not supported. It is recommended to use 5pin-type Cherry MX compatible keyswitches.
• As of Jan 1st, 2022, Raspberry Pi is not fully supported by QMK Firmware. Thanks to sekigon-gonnoc, the method sekigon-gonnoc has built(https://scrapbox.io/self-made-kbds-ja/RP2040対応のQMK(非公式)を動かす) is used.  
• Since the pictures shown in this page were taken with an engineering sample, they might not completely represent what it is. 
• Specification are subject to change.