Marc-Blanco/Mykey-boardI tried to make a functional and cool midi keyboard like a piano with 88 keys DIY, with cool features. It has 2 speakers and 2 rotary encoders to tingle things, I would like to improve on the project and this is kind of…
Mike ky board is an open-source printed circuit board by Marc-Blanco, from the Marc-Blanco/Mykey-board repository on GitHub. It is a 2-layer board of 1,008.5 × 98.7 mm with 190 parts on 223 nets, routed with 1,122 tracks and 107 vias.
It is built around the NHD-C12832A1Z-FSRGB and PCM5100PW. Its parts include 93 switches, 90 diodes and 4 ICs. It belongs with the RP2040 boards of this library.
I tried to make a functional and cool midi keyboard like a piano with 88 keys DIY, with cool features. It has 2 speakers and 2 rotary encoders to tingle things, I would like to improve on the project and this is kind of a Deltarune reference so maybe add easter eggs?
Photos:
| Qty | Value | Footprint | References |
|---|---|---|---|
| 90 | 1N914 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D109, D110, D111, D112, D113, D114, D115, D116, D117, D118, D119, D120, D121, D122, D123, D124 +74 |
| 88 | SW_Push_45deg | Button_Switch_THT:SW_DIP_SPSTx01_Piano_10.8x4.1mm_W7.62mm_P2.54mm | SW100, SW101, SW109, SW112, SW113, SW114, SW115, SW116, SW117, SW118, SW119, SW120, SW121, SW122, SW123, SW124 +72 |
| 2 | MCP23017x-x-ML | Package_DFN_QFN:QFN-28-1EP_6x6mm_P0.65mm_EP4.25x4.25mm | U2, U3 |
| 2 | RotaryEncoder_Switch_MP | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW82, SW102 |
| 2 | SW_Push_45deg | Button_Switch_THT:SW_Tactile_Straight_KSA0Axx1LFTR | SW181, SW182 |
| 2 | Speaker | Buzzer_Beeper:Speaker_CUI_CMR-1206S-67 | LS1, LS2 |
| 1 | NHD-C12832A1Z-FSRGB | Display:NHD-C12832A1Z-FSRGB | U4 |
| 1 | PCM5100 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_Common_Unspecified | A1 |
| 1 | SW_DIP_x01 | Button_Switch_THT:SW_PUSH_1P1T_6x3.5mm_H4.3_APEM_MJTP1243 | SW84 |
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It measures 1,008.5 × 98.7 mm and has 2 copper layers, 1.6 mm thick.
190 parts, built around the NHD-C12832A1Z-FSRGB and PCM5100PW. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the Marc-Blanco/Mykey-board repository on GitHub, at the commit this page was made from: the board is PCB/Mike-ky-board.kicad_pcb and its schematic PCB/Mike-ky-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Marc-Blanco before reusing the design.
