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MCU: Adafruit ItsyBitsy 32u4 x 1 pcs
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Key switches: Kaih X Switch x 68 pcs
(Actually, I don't like the touch feeling of X-Switch. but, it seems the only key switch we can get for laptop. I'm looking forward to selling the Cherry MX Ultra Low Profile switch. )
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Keycaps: by Aliexpress x 68 pcs
(I dyed black by SDN dye.)
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SMD Diodes: 1N4148W or similar x 68 pcs
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Tactile switch: C&K KMR211NG LFS or compatible x 1 pcs
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FFC connector: 22pos, 1.0mm pitch, Würth Elektronik 686122148922 or compatible x 1 pcs
(The height have to be less than 2.5mm.)
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USB micro B plug: GCT USB3150-30-130-A or compatible x 1 pcs
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FFC cable: 22pos, 1.0mm pitch, 100mm length or Compatible x 1 pcs
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Trackpoint module: disassemble from T470s keyboard
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Trackpoint cap: by Saoto-Tech (optional) x 1pcs