Digital Piano Product
An 88-key digital piano with a graded hammer action, sampled sound engine and built-in amplified speakers. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
12 top-level lines · 55 rows shown · 689 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Cabinet & Chassis 5 parts | digital-piano-cabinet | 1× | 1 | 5 | assembly |
| 1.1 | Cabinet Body | digital-piano-cabinet-body | 1× | 1 | — | part |
| 1.2 | Top Cover / Fallboard | digital-piano-top-cover | 1× | 1 | — | part |
| 1.3 | Key-Bed Chassis | digital-piano-key-bed | 1× | 1 | — | part |
| 1.4 | Pedal Box Housing | digital-piano-pedal-box | 1× | 1 | — | part |
| 1.5 | Fastener Set | fastener-set | 1× | 1 | — | part |
| 2 | Graded Hammer Action 9 parts | digital-piano-action | 1× | 1 | 531 | assembly |
| 2.1 | Piano Key | digital-piano-key | 88× | 88 | — | part |
| 2.2 | Key Frame | digital-piano-key-frame | 1× | 1 | — | part |
| 2.3 | Weighted Hammer | digital-piano-hammer | 88× | 88 | — | part |
| 2.4 | Hammer Counterweight | digital-piano-counterweight | 88× | 88 | — | part |
| 2.5 | Hammer Rail | digital-piano-hammer-rail | 1× | 1 | — | part |
| 2.6 | Balance Pin | digital-piano-balance-pin | 88× | 88 | — | part |
| 2.7 | Rubber Dome Switch Strip | digital-piano-switch-rubber | 88× | 88 | — | part |
| 2.8 | Coil Spring | coil-spring | 88× | 88 | — | part |
| 2.9 | Fastener Set | fastener-set | 1× | 1 | — | part |
| 3 | Key Scan Board 4 parts | digital-piano-scan-board | 1× | 1 | 92 | assembly |
| 3.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 3.2 | Key Contact Pad | digital-piano-key-contact | 88× | 88 | — | part |
| 3.3 | SMD Passive (R/C/L) | smd-passives | 1× | 1 | — | part |
| 3.4 | Connector | connector | 2× | 2 | — | part |
| 4 | Sound Engine Board 7 parts | digital-piano-sound-board | 1× | 1 | 9 | assembly |
| 4.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 4.2 | Compute SoC Module | soc-module | 1× | 1 | — | part |
| 4.3 | Microcontroller | mcu | 1× | 1 | — | part |
| 4.4 | Sample Wave ROM | digital-piano-sample-rom | 1× | 1 | — | part |
| 4.5 | Audio DAC | digital-piano-dac | 1× | 1 | — | part |
| 4.6 | SMD Passive (R/C/L) | smd-passives | 1× | 1 | — | part |
| 4.7 | Connector | connector | 3× | 3 | — | part |
| 5 | Amplifier & Speaker Unit 5 parts | digital-piano-amp-board | 1× | 1 | 9 | assembly |
| 5.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 5.2 | SMD Passive (R/C/L) | smd-passives | 1× | 1 | — | part |
| 5.3 | Speaker | speaker | 4× | 4 | — | part |
| 5.4 | Bass-Reflex Enclosure | digital-piano-bass-reflex | 1× | 1 | — | part |
| 5.5 | Connector | connector | 2× | 2 | — | part |
| 6 | Control Panel 6 parts | digital-piano-control-panel | 1× | 1 | 21 | assembly |
| 6.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 6.2 | Panel Button | digital-piano-button | 16× | 16 | — | part |
| 6.3 | Rotary Encoder | digital-piano-rotary | 1× | 1 | — | part |
| 6.4 | LCD Panel | lcd-panel | 1× | 1 | — | part |
| 6.5 | SMD Passive (R/C/L) | smd-passives | 1× | 1 | — | part |
| 6.6 | Connector | connector | 1× | 1 | — | part |
| 7 | Pedal Unit 5 parts | digital-piano-pedal-unit | 1× | 1 | 11 | assembly |
| 7.1 | Pedal | digital-piano-pedal | 3× | 3 | — | part |
| 7.2 | Pedal Switch | digital-piano-pedal-switch | 3× | 3 | — | part |
| 7.3 | Coil Spring | coil-spring | 3× | 3 | — | part |
| 7.4 | Connector | connector | 1× | 1 | — | part |
| 7.5 | Fastener Set | fastener-set | 1× | 1 | — | part |
| 8 | Jack Panel 2 parts | digital-piano-jack-panel | 1× | 1 | 7 | assembly |
| 8.1 | Jack Mounting Plate | digital-piano-jack-plate | 1× | 1 | — | part |
| 8.2 | Connector | connector | 6× | 6 | — | part |
| 9 | Power Supply | power-supply | 1× | 1 | — | part |
| 10 | Wire Bundle | wire-bundle | 1× | 1 | — | part |
| 11 | Music Rest | digital-piano-music-rest | 1× | 1 | — | part |
| 12 | Fastener Set | fastener-set | 1× | 1 | — | part |
Sourcing — likely vendors
Companies that make this · indicative price $50–$5k · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| yamaha.com ↗ | Hamamatsu, JP | Audio & instruments | 200 units | 8–14 wks |
| 🇺🇸Fender fender.com ↗ | Los Angeles, US | Guitars & amps | 200 units | 8–14 wks |
| 🇺🇸Gibson gibson.com ↗ | Nashville, US | Guitars | 200 units | 8–14 wks |
| 🇯🇵Roland roland.com ↗ | Hamamatsu, JP | Electronic instruments | 200 units | 8–14 wks |
| steinway.com ↗ | New York, US | Pianos | 200 units | 8–14 wks |