CopperPilot/tabletAn 8.4-inch tablet around a chip-down RK3566 + LPDDR4X: 8-layer 0.8 mm mainboard, USB-C daughter board, 1600x2560 dual-DSI display, CNC aluminium shell. Designed end to end by CopperPilot, open for review.
Compact tablet is an open-source printed circuit board by CopperPilot, from the CopperPilot/tablet repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is an 8-layer board of 28 × 125 mm with 431 parts on 611 nets, routed with 90,618 tracks and 1,703 vias.
It is built around the RK3566, NS4150B and AW3641EDNR, with the MPR121QR2, SN74LV1T34DCKR and FEMDNN064G-C9A61 among its other parts. Its parts include 184 capacitors, 95 resistors, 44 diodes, 17 inductors and 16 ICs. It belongs with the computers and single-board computers boards of this library.
usbc_board)2-layer 0.8 mm ENIG PCB (25.0 x 12.0 mm, 1.5 mm corner radius, plated M1.4 ground mounting holes H1 at (2.5, 6.0) and H2 at (22.5, 6.0)) positioned at the bottom edge of the tablet (world_position_mm: [-48.5, -162.5, 0.0]). Provides the user-facing USB-C 5 V power sink and USB 2.0 OTG data interface (J1), active 6.54 V typ (6.32 V..6.75 V) OVP / 5.94 V typ (5.77 V min) recovery / 2.43 A typ (2.19 A..2.68 A) OCP eFuse (U2, TPS259470ARPWR, programmed by R6=34.8k, R7=5.62k, R8=9.09k, R9=1.37k, C5=4.7nF on DVDT Pin 7 setting dV/dt = 5.11 V/ms, local output decoupling C4=1uF + freewheeling Schottky clamp diode D5=PMEG3005EL,315 on VBUS, and wide >= 1.5-2.0 mm stitched F.Cu/B.Cu polygon pours across the full 2.4 mm length of U2 Pads 5 and 6 feeding J2 Pads 11..16 symmetrically, with mainboard U11 BQ25895RTWR input current limit capped <= 2.00 A [10.0 W max for the 2.4 W typ / 6.0 W peak tablet] strictly below U2 I_OL(min) = 2.19 A), 22 V standoff / 28.6 V max flat-clamp VBUS_IN surge TVS protection (D3, ESTVS2200DRVR C42400188), 50 V unswitched VBUS_IN decoupling (C1, 1 uF 50V GRM155R61H105KE05D C1518208) + pulse-rated 0.33 W 0603 RC hot-plug snubber (R3, 2.2 Ohm ERJPA3J2R2V + C3, 1 uF 50V 0603 CL10A105KB8NNNC C15849, keeping total unswitched capacitance on VBUS_IN at 2.0 uF <= 2.2 uF), compensated 6.8 kOhm 1% CC1/CC2 pull-down resistors (R1, R2, 0402WGF6801TCE C25917, yielding Rd(eff) = 6.8 kOhm || [10 kOhm R4/R5 + 10 kOhm mainboard R49/R50] = 5.075 kOhm within 5.1 kOhm +/- 10%), dedicated ground-referenced CC1/CC2 ESD protection (D1, D2) with 10 kOhm series overvoltage/current-limiting isolation resistors (R4, R5), flow-through USB 2.0 D+/D- ESD protection (U1 with Pin 5 on USB_ESD_VBUS decoupled by 100 nF 50V C2 to GND and biased at ~4.7 V DC from protected VBUS via 1.0 kOhm R10 and 70 V ultra-low-leakage blocking diode D4 BAS70L,315 on USB_ESD_BIAS), and a 16-pin 0.5 mm pitch FPC link (J2) to mainboard connector J6.
usbc_fpc_cable: Mainboard J6 <-> usbc_board J2)1-to-1 pin mapping across top-mounted J6 (0.5K-QX-16PWB on main) and top-mounted J2 (0.5K-QX-16PWB on usbc_board) joined by a mandated 2 oz (0.070 mm) heavy-copper Type-B (opposite-side contact, Pin 1 to Pin 1) 16-pin 0.5 mm FFC cable (FFC-0.5-16P-92MM-TYPE-B, 0.50 A/pin connector contact rating = 3.00 A across 6 parallel VBUS contacts, protected by U2's 2.43 A typ / 2.68 A max active OCP limit):
J6 Pin (Mainboard) | J2 Pin (usbc_board) | Net Name | Signal / Power Function | Contact Rating & Allocation |
|---|---|---|---|---|
| 1 | 1 | USB_OTG0_DP | USB 2.0 OTG Data + (RK3566.USB_OTG0_DP) | 90 Ohm diff pair |
| 2 | 2 | USB_OTG0_DM | USB 2.0 OTG Data - (RK3566.USB_OTG0_DM) | 90 Ohm diff pair |
| 3 | 3 | GND | High-speed reference ground adjacent to D+/D- | 0.50 A contact (1 of 8 GND returns) |
| 4 | 4 | USB_CC1 | Isolated USB-C CC1 sense (behind 10 kOhm series limiter R4) | Signal (< 1 mA fault current) |
| 5 | 5 | USB_CC2 | Isolated USB-C CC2 sense (behind 10 kOhm series limiter R5) | Signal (< 1 mA fault current) |
| 6 | 6 | GND | Power return & shield ground | 0.50 A contact (2 of 8 GND returns) |
| 7 | 7 | GND | Power return & shield ground | 0.50 A contact (3 of 8 GND returns) |
| 8 | 8 | GND | Power return & shield ground | 0.50 A contact (4 of 8 GND returns) |
| 9 | 9 | GND | Power return & shield ground | 0.50 A contact (5 of 8 GND returns) |
| 10 | 10 | GND | Power return & shield ground | 0.50 A contact (6 of 6 signal GND pins = 3.00 A) |
| 11 | 11 | VBUS | Protected 5 V rail from U2 (TPS259470ARPWR VOUT, 2.43 A typ / 2.68 A max OCP) | 0.50 A contact (1 of 6 VBUS contacts) |
| 12 | 12 | VBUS | Protected 5 V rail from U2 (TPS259470ARPWR VOUT, 2.43 A typ / 2.68 A max OCP) | 0.50 A contact (2 of 6 VBUS contacts) |
| 13 | 13 | VBUS | Protected 5 V rail from U2 (TPS259470ARPWR VOUT, 2.43 A typ / 2.68 A max OCP) | 0.50 A contact (3 of 6 VBUS contacts) |
| 14 | 14 | VBUS | Protected 5 V rail from U2 (TPS259470ARPWR VOUT, 2.43 A typ / 2.68 A max OCP) | 0.50 A contact (4 of 6 VBUS contacts) |
| 15 | 15 | VBUS | Protected 5 V rail from U2 (TPS259470ARPWR VOUT, 2.43 A typ / 2.68 A max OCP) | 0.50 A contact (5 of 6 VBUS contacts) |
| 16 | 16 | VBUS | Protected 5 V rail from U2 (TPS259470ARPWR VOUT, 2.43 A typ / 2.68 A max OCP) | 0.50 A contact (6 of 6 VBUS contacts = 3.00 A contact rating > 2.68 A max OCP) |
| 17, 18 | 17, 18 | GND | Soldered mechanical reinforcement & return tabs | Shield ground (7 & 8 of 8 GND returns) |
| Ref | MPN | LCSC | Value / Spec | Footprint | Function & Datasheet Margin |
|---|---|---|---|---|---|
J1 | TYPE-C-31-M-12 | C165948 | 16P USB-C Receptacle (20V/5A) | lcsc:USB-C_SMD-TYPE-C-31-M-12_1 | Dual VBUS_IN (A4B9, B4A9), dual GND (A1B12, B1A12), 4 grounded shell tabs |
J2 | 0.5K-QX-16PWB | C2919481 | 16P 0.5mm FPC Connector | lcsc:FPC-SMD_16P-P0.50_HDGC_0.5K-QX-16PWB | 6x VBUS (Pins 11..16, 3.00 A contact rating > 2.68 A max U2 OCP), 8x GND (Pins 3, 6..10, 17, 18) |
U1 | USBLC6-2P6 | C2827693 | Low-C (0.35 pF) USB 2.0 ESD Array | lcsc:SOT-666-6_L1.6-W1.2-P0.50-LS1.6-BL | Flow-through on USB_OTG0_DP/DM; Pin 5 on USB_ESD_VBUS decoupled by 100 nF C2 to GND and biased at ~4.7 V DC from VBUS via R10 (1k) + D4 (BAS70L,315) |
U2 | TPS259470ARPWR | C3662799 | 28V, 28.3 mOhm, 5.5A Back-to-Back FET eFuse | lcsc:VQFN-10_L2.0-W2.0-P0.45-TL | Series OVP/OCP on VBUS_IN -> VBUS: 6.54 V typ (6.34 V min) OVP cutoff, 5.94 V typ (5.77 V min) recovery, 2.43 A typ (2.19 A..2.68 A) active OCP, 5.11 V/ms slew (C5=4.7nF) |
D1, D2 | PTVS5V5D1BLYL | C553450 | 5.5V Bidirectional Surge TVS (70 pF) | lcsc:SOD-882_L1.0-W0.6-BI-1 | Ground-referenced ESD/surge clamping on USB_CC1_CONN and USB_CC2_CONN |
D3 | ESTVS2200DRVR | C42400188 | 22V Standoff / 28.6V Max Flat-Clamp 2000W Surge TVS | lcsc:DFN-6_L2.0-W2.0-P0.65-BL-EP1.6 | 22 V standoff (V_BR = 25.8 V > 20 V USB-PD and > 6.75 V U2 OVLO; flat V_CL = 27.6 V typ / 28.6 V max at 70 A 8/20 us < 28.8 V U2 abs max) |
D4 | BAS70L,315 | C456141 | 70V 70mA Ultra-Low-Leakage Schottky | lcsc:SOD-882_L1.0-W0.6-BI-1 | Blocking diode from USB_ESD_BIAS (R10.2) to USB_ESD_VBUS (U1.5/C2.1); biases U1.5 at ~4.7 V DC and blocks reverse overvoltage faults |
D5 | PMEG3005EL,315 | C282565 | 30V 0.5A (3A peak) Low-VF Schottky | lcsc:SOD-882_L1.0-W0.6-BI-1 | Output freewheeling clamp diode (Anode = GND, Cathode = VBUS) adjacent to U2.6 and J2.11..16 clamping negative inductive kickback |
R1, R2 | 0402WGF6801TCE | C25917 | 6.8 kOhm 1% 50V 62.5mW 0402 | lcsc:R0402 | Compensated USB-C 5V/3A sink pull-downs (`6.8 kOhm |
R3 | ERJPA3J2R2V | C445778 | 2.2 Ohm 5% 0.33W (1/3W) Anti-Surge 0603 | lcsc:R0603 | Pulse-rated (>= 0.25 W, AEC-Q200) RC hot-plug damper resistor in series with C3 on VBUS_DAMP |
R4, R5 | 0402WGF1002TCE | C25744 | 10 kOhm 1% 50V 62.5mW 0402 | lcsc:R0402 | Series current-limiting isolation between USB_CC1_CONN/USB_CC2_CONN and J2 Pins 4-5 (USB_CC1/USB_CC2) |
R6 | 0402WGF3482TCE | C47493 | 34.8 kOhm 1% 50V 62.5mW 0402 | lcsc:R0402 | Upper ladder resistor from VBUS_IN to VBUS_UVLO (U2.1) |
R7 | 0402WGF5621TCE | C25909 | 5.62 kOhm 1% 50V 62.5mW 0402 | lcsc:R0402 | Middle ladder resistor from VBUS_UVLO (U2.1) to VBUS_OVLO (U2.2, sets V_UVLO = 4.04 V typ rising / 3.67 V falling) |
R8 | 0402WGF9091TCE | C11549 | 9.09 kOhm 1% 50V 62.5mW 0402 | lcsc:R0402 | Lower ladder resistor from VBUS_OVLO (U2.2) to GND (sets V_OVLO = 6.54 V typ [6.32 V..6.75 V] rising / 5.94 V typ [5.77 V min] falling) |
R9 | 0402WGF1371TCE | C423239 | 1.37 kOhm 1% 50V 62.5mW 0402 | lcsc:R0402 | Current-limit resistor on U2.9 (ILM to GND), setting I_OL = 3334 / 1370 = 2.43 A typ (2.19 A min, 2.68 A max) active OCP (> 2.00 A charger IINLIM ceiling, < 3.00 A J2 contact rating) |
R10 | 0402WGF1001TCE | C11702 | 1.0 kOhm 1% 50V 62.5mW 0402 | lcsc:R0402 | Current-limiting bias resistor from VBUS to USB_ESD_BIAS (D4 Anode), charging C2 (100 nF) in t = 0.1 ms |
C1 | GRM155R61H105KE05D | C1518208 | 1 uF 50V X5R 0402 | lcsc:C0402 | Unswitched HF input decoupling on VBUS_IN adjacent to J1 (50 V rating, > 1.75x D3 28.6 V max clamp and 2.5x 20 V PD fault) |
C2 | CC0402KRX7R9BB104 | C131394 | 100 nF 50V X7R 0402 | lcsc:C0402 | Dedicated local ESD rail-clamp bypass on USB_ESD_VBUS right beside U1.5 and U1.2 (50 V rating, biased at ~4.7 V DC) |
C3 | CL10A105KB8NNNC | C15849 | 1 uF 50V X5R 0603 | lcsc:C0603 | RC snubber capacitor in series with R3 on VBUS_DAMP (50 V rating; C1 + C3 = 2.0 uF <= 2.2 uF unswitched cSnkBulk) |
C4 | CL05A105KA5NQNC | C52923 | 1 uF 25V X5R 0402 | lcsc:C0402 | Local output decoupling capacitor (C_OUT) on VBUS adjacent to U2.6 and J2.11..16 |
C5 | 0402B472K500NT | C1538 | 4.7 nF 50V X7R 0402 | lcsc:C0402 | Soft-start slew-rate capacitor on U2.7 (VBUS_DVDT to GND), setting dV/dt = 5.11 V/ms (t_dVdT = 0.98 ms) |
H1, H2 | MountingHole_Pad | — | M1.4 Plated Ground Mounting Holes (1.5 mm drill) | lcsc:MountingHole_1.5mm | Chassis/return ground tie at (2.5, 6.0) and (22.5, 6.0) |
| Qty | Value | Footprint | References |
|---|---|---|---|
| 71 | 100nF | Capacitor_SMD:C_0402_1005Metric | C100, C101, C105, C106, C107, C108, C109, C110, C111, C112, C113, C114, C115, C116, C117, C118 +55 |
| 42 | 1uF | Capacitor_SMD:C_0402_1005Metric | C10, C11, C12, C127, C128, C140, C142, C147, C148, C149, C151, C159, C160, C174, C177, C181 +26 |
| 24 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R5, R11, R12, R27, R28, R29, R30, R31, R38, R40, R42, R43, R45, R49, R50 +8 |
| 24 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C26, C129, C130, C163, C165, C166, C167, C168, C178, C179, C180, C182 +8 |
| 23 | PESD5V0F1BL,315 | lcsc:SOD-882_L1.0-W0.6-BI | D10, D11, D12, D16, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D32, D33 +7 |
| 15 | 22uF | Capacitor_SMD:C_0603_1608Metric | C50, C51, C65, C80, C81, C89, C90, C95, C96, C102, C103, C104, C120, C121, C124 |
| 14 | 100k | Resistor_SMD:R_0402_1005Metric | R48, R68, R69, R70, R72, R73, R74, R75, R76, R77, R78, R80, R81, R88 |
| 14 | PTVS5V5D1BLYL | lcsc:SOD-882_L1.0-W0.6-BI-1 | D5, D6, D7, D8, D15, D17, D18, D29, D30, D31, D35, D36, D37, D38 |
| 10 | 1nF | Capacitor_SMD:C_0402_1005Metric | C53, C54, C73, C74, C133, C134, C135, C136, C137, C138 |
| 9 | 100R | Resistor_SMD:R_0402_1005Metric | R32, R33, R53, R54, R55, R56, R58, R59, R60 |
| 8 | 2.2k | Resistor_SMD:R_0402_1005Metric | R2, R3, R15, R16, R17, R18, R84, R85 |
| 6 | 15pF | Capacitor_SMD:C_0402_1005Metric | C20, C21, C22, C23, C24, C25 |
| 6 | 30k | Resistor_SMD:R_0402_1005Metric | R10, R21, R22, R35, R86, R87 |
| 5 | 120R@100MHz | lcsc:L0603 | L13, L14, L15, L16, L17 |
| 5 | 470nH | lcsc:IND-SMD_L2.0-W1.6_WPN2016X | L1, L2, L3, L4, L5 |
| 4 | 10uF | Capacitor_SMD:C_0402_1005Metric | C170, C171, C172, C173 |
| 4 | 22R | Resistor_SMD:R_0402_1005Metric | R25, R46, R93, R95 |
| 4 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C28, C46, C153, C155 |
| 4 | BAS70L,315 | lcsc:SOD-882_L1.0-W0.6-RD | D43, D44, D45, D49 |
| 4 | MountingHole | MountingHole:MountingHole_1.5mm | H1, H2, H3, H4 |
| 3 | 0.5K-QX-4PWB | lcsc:FPC-SMD_4P-P0.50_HDGC_0.5K-QX-4PWB | J7, J8, J9 |
| 3 | 0R | Resistor_SMD:R_0402_1005Metric | R26, R67, R94 |
| 3 | 1M | Resistor_SMD:R_0402_1005Metric | R7, R66, R71 |
| 3 | 4.7k | Resistor_SMD:R_0402_1005Metric | R62, R63, R79 |
| 3 | 47k | Resistor_SMD:R_0402_1005Metric | R34, R91, R92 |
| 3 | SN74LV1T34DCKR | lcsc:SC-70-5_L2.1-W1.3-P0.65-LS2.1-BR | U17, U18, U19 |
| 3 | TLV75533PDRVR | lcsc:WSON-6_L2.0-W2.0-P0.65-TL-EP | U15, U21, U24 |
| 2 | 1.5pF | Capacitor_SMD:C_0402_1005Metric | C68, C69 |
| 2 | 12k | Resistor_SMD:R_0402_1005Metric | R44, R90 |
| 2 | 18pF | Capacitor_SMD:C_0402_1005Metric | C66, C67 |
| 2 | 240R | Resistor_SMD:R_0402_1005Metric | R19, R20 |
| 2 | 24MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1, Y3 |
| 2 | 75k | Resistor_SMD:R_0402_1005Metric | R14, R36 |
| 2 | KH-PBJ-440808 | lcsc:CONN-SMD_3P-L4.4-W0.8_C9900042675 | SH1, SH2 |
| 2 | NS4150B | lcsc:MSOP-8_L3.0-W3.0-P0.65-LS5.0-BL | U10, U23 |
| 1 | 0.22R | Resistor_SMD:R_0603_1608Metric | R24 |
| 1 | 0.47uH | lcsc:IND-SMD_L2.0-W1.6_WPN2016X | L10 |
| 1 | 0.5K-QX-10PWB | lcsc:FPC-SMD_10P-P0.50_HDGC_0.5K-QX-10PWB | J2 |
| 1 | 0.5K-QX-16PWB | lcsc:FPC-SMD_16P-P0.50_HDGC_0.5K-QX-16PWB | J6 |
| 1 | 0.5K-QX-30PWB | lcsc:FPC-SMD_30P-P0.50_HDGC_0.5K-QX-30PWB | J3 |
| 1 | 10mR | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 10uH | Inductor_SMD:L_1008_2520Metric | L7 |
| 1 | 110k | Resistor_SMD:R_0402_1005Metric | R23 |
| 1 | 120R | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 196R | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R65 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C19 |
| 1 | 1uH | lcsc:IND-SMD_L2.0-W1.6_WPN2016X | L12 |
| 1 | 1uH | Inductor_SMD:L_1008_2520Metric | L8 |
| 1 | 2.2nH | lcsc:IND-SMD_L1.0-W0.5_LQG15HN1N6B02D | L11 |
| 1 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C18 |
| 1 | 2.2uH | lcsc:IND-SMD_L2.0-W1.6_WPN2016X | L9 |
| 1 | 200k | Resistor_SMD:R_0402_1005Metric | R37 |
| 1 | 3.3R | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 300k | Resistor_SMD:R_0402_1005Metric | R47 |
| 1 | 32.768kHz | lcsc:FC-135R_L3.2-W1.5 | Y2 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C49 |
| 1 | 470nH | Inductor_SMD:L_1008_2520Metric | L6 |
| 1 | 47nF | Capacitor_SMD:C_0402_1005Metric | C27 |
| 1 | 49.9R | Resistor_SMD:R_0402_1005Metric | R41 |
| 1 | 5.1k | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 63.4k | Resistor_SMD:R_0402_1005Metric | R39 |
| 1 | ANT3216A063R2400A | lcsc:ANT-SMD_3P-L3.1-W1.6_ANT3216A063R2400A | ANT1 |
| 1 | AW3641EDNR | lcsc:WDFN-10_L3.0-W3.0-P0.50-BL-EP | U7 |
| 1 | B16WS | Diode_SMD:D_SOD-323 | D2 |
| 1 | BQ25895RTWR | lcsc:QFN-24_L4.0-W4.0-P0.50-TL-EP2.7 | U11 |
| 1 | BSMD0603L-300 | lcsc:F0603 | F1 |
| 1 | DF58-4P-1.2V(21) | lcsc:CONN-SMD_4P-P1.20_DF58-4P-1.2V-21 | J5 |
| 1 | FEMDNN064G-C9A61 | lcsc:BGA-153_L13.0-W11.5-P0.50-TL_FORESEE_FEMDME | U3 |
| 1 | FPC-0.5HF-24PWBH10 | lcsc:FPC-SMD_24P-P0.50_XUNPU_FPC-0.5HF-24PWBH10 | J4 |
| 1 | FPC-0.5HF-40PWBH10 | lcsc:FPC-SMD_40P-P0.50_FPC-0.5HF-40PWBH10 | J1 |
| 1 | H36VND3B | lcsc:SOD-323_L1.8-W1.3-LS2.7-BI | D14 |
| 1 | K4FBE3D4HM-MGCJ | lcsc:FBGA-200_L15.0-W10.0-BL_K4F6E3S4HM | U2 |
| 1 | KW CELNM3.TK-S4S9-4L07M0-2686 | lcsc:LED-SMD_3P-L1.9-W1.5_KW-CELMM1.TG | D1 |
| 1 | LM66200DRLR | lcsc:SOT-583-8_L2.1-W1.2-P0.50-LS1.6-BL | U25 |
| 1 | MPR121QR2 | lcsc:QFN-20_L3.0-W3.0-P0.40-BL | U9 |
| 1 | MSM261DCB002 | lcsc:MIC-SMD_5P-L2.8-W1.9_MSM261DCB002 | MK1 |
| 1 | PPM6N20V10 | lcsc:DFN-6_L2.0-W2.0-P0.65-BL-EP-1 | Q1 |
| 1 | RK3566 | lcsc:BGA-565_L15.5-W14.4-P0.40_RK3566_1 | U1 |
| 1 | RK809-5 | lcsc:QFN-68_L7.0-W7.0-P0.35-BL-EP5.5 | U4 |
The 378 most common of 431 parts.
It measures 28 × 125 mm and has 8 copper layers, 0.8 mm thick.
431 parts, built around the RK3566, NS4150B, AW3641EDNR and MPR121QR2. 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 CopperPilot/tablet repository on GitHub, at the commit this page was made from: the board is hardware/compact-tablet.kicad_pcb and its schematic hardware/compact-tablet.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
CopperPilot/tablet
An 8.4-inch tablet around a chip-down RK3566 + LPDDR4X: 8-layer 0.8 mm mainboard, USB-C daughter board, 1600x2560 dual-DSI display, CNC aluminium shell. Designed end to end by CopperPilot, open for review.
DevKiDCosmo/SATELLITE-EDGE-MODULE
A satellite edge module ready for competition
gralco/l5-schematic
The Librem 5 schematics, copper layers, assembly drawings, and BOMs (mainboard and USB-C board).
sensors-inl/Nervous-EDA
ECAD design files, firmware source code and standalone application for the EDA sensor of the Nervous project.
sensors-inl/Nervous-ECG
ECAD design files, firmware source code and standalone application for the ECG sensor of the Nervous project.
