LKP-Core
About the LKP-Core PCB
LKP-Core is an open source PCB design by Project-Alpaca, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 41 × 35 mm, with 34 components from 19 distinct parts.
Other key parts include the CY8C4246AZI-M445. By type, the board carries 12 capacitors, 12 resistors, 6 connectors, 2 diodes, 1 IC and 1 inductor.
It belongs with the sensors designs in this gallery.
From the project
🍌🎹 Capacitive touch slider controller for rhythm games.
Capacitive touch slider controller for rhythm games.
Microcontroller board for use with LKP electrode boards. Supports up to 32 channel of self capacitance input. Includes a WS281x LED driver channel with protection resistor. Supports I2C or UART as communication methods.
For sample firmware for use with LKP-Core, see LKP-FW.
IMPORTANT: WS281x LED driver will not work on this variant. See errata. This variant is only included for documentation purposes and will no longer receive updates.
Main components on the LKP-Core
LKP-Core bill of materials (BOM)
34 components, 19 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CY8C4246AZI-M445 | TQFP-64_10x10mm_P0.5mm | U1 |
| 1 | Intercon L | PinSocket_2x09_P2.54mm_Vertical | J1 |
| 1 | Intercon R | PinSocket_2x09_P2.54mm_Vertical | J2 |
| 1 | Power JST PH | JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | J3 |
| 1 | IO | PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | SWD | PinHeader_1x05_P2.54mm_Vertical | J5 |
| 1 | WS281x | PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | MBR0520L | D_SOD-123 | D1 |
| 1 | Yellow | LED_0805_2012Metric | D2 |
| 1 | 330Ohm@100MHz | L_0603_1608Metric | FB1 |
| 4 | CL10B104KA8NNNC 0.1uF | C_0603_1608Metric | C1, C4, C6, C10 |
| 5 | CC0603KRX5R8BB105 1uF | C_0603_1608Metric | C2, C3, C5, C8, C11 |
| 1 | GRM2195C1H103JA01D 10nF C0G Murata Electronics | C_0805_2012Metric | C7 |
| 1 | GCM1885C1H222JA16D 2.2nF C0G Murata Electronics | C_0603_1608Metric | C9 |
| 1 | 10uF | CP_EIA-3216-18_Kemet-A | C12 |
| 1 | 1k | R_0603_1608Metric | R1 |
| 1 | 470 | R_0603_1608Metric | R2 |
| 2 | 560 | R_0603_1608Metric | R3, R4 |
| 8 | 4D02WGJ0561TCE 560 Uniroyal | R_Array_Convex_4x0402 | RN1, RN2, RN3, RN4, RN5, RN6, RN7, RN8 |
LKP-Core design files
The KiCad project lives in the Project-Alpaca/LKP repository on GitHub; these links point at the commit this page was built from.
LKP-Core: common questions
How big is the LKP-Core PCB?
The LKP-Core measures 41 × 35 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the LKP-Core?
34 components, from 19 distinct parts. The full bill of materials is listed on this page.
Where can I download the LKP-Core design files?
From the Project-Alpaca/LKP repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the LKP-Core design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which Project-Alpaca chose for the repository.
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