Reference layout
810
minisystem-810-810-layout
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minisystem-810-810-layout
The project archive carries the board, its project file and the upstream licence. The archive is zstd-compressed (tar.zst).
334Placed parts
232Nets
2Copper layers
148 × 110 mmBoard size
yesRouted
KiCad 4File format
Bill of materials
328 distinct parts
None of these names match a library the catalog carries.
| Ref | Value | Footprint | Qty |
|---|---|---|---|
| C1 | 100p | MyModules:SM0603-C-JRL | |
| C10 | 270pF | MyModules:SM0603-C-JRL | |
| C11 | 1n | MyModules:SM0603-C-JRL | |
| C12 | 100p | MyModules:SM0603-C-JRL | |
| C13 | 270pF | MyModules:SM0603-C-JRL | |
| C14 | 10n | MyModules:SM0603-C-JRL | |
| C15 | 10μF | MyModules:jrl_c_elec_5x5.3 | |
| C16 | 0.01μF | MyModules:SM0603-C-JRL | |
| C17 | 100p | MyModules:SM0603-C-JRL | |
| C18 | 100p | MyModules:SM0603-C-JRL | |
| C19 | 270pF | MyModules:SM0603-C-JRL | |
| C2 | 10μF | MyModules:jrl_c_elec_5x5.3 | |
| C20 | 47p | MyModules:SM0603-C-JRL | |
| C21 | 0.47μ | MyModules:jrl_c_elec_4x5.3 | |
| C22 | 22p | MyModules:SM0603-C-JRL | |
| C23 | 10μF | MyModules:jrl_c_elec_5x5.3 | |
| C24 | 22p | MyModules:SM0603-C-JRL | |
| C25 | 100n | MyModules:SM0603-C-JRL | |
| C26 | 10μF | MyModules:jrl_c_elec_5x5.3 | |
| C27 | 0.1µ | MyModules:SM0603-C-JRL | |
| C28 | 0.1µ | MyModules:SM0603-C-JRL | |
| C29 | 0.1µ | MyModules:SM0603-C-JRL | |
| C3 | 22p | MyModules:SM0603-C-JRL | |
| C30 | 0.1µ | MyModules:SM0603-C-JRL | |
| C31 | 0.1µ | MyModules:SM0603-C-JRL | |
| C32 | 0.1µ | MyModules:SM0603-C-JRL | |
| C33 | 0.47μ | MyModules:SM0603-C-JRL | |
| C34 | 0.1µ | MyModules:SM0603-C-JRL | |
| C35 | 0.1µ | MyModules:SM0603-C-JRL | |
| C36 | 0.47μ | MyModules:SM0603-C-JRL | |
| C37 | 0.1µ | MyModules:SM0603-C-JRL | |
| C38 | 0.1µ | MyModules:SM0603-C-JRL | |
| C39 | 0.1µ | MyModules:SM0603-C-JRL | |
| C4 | 0.1μ | MyModules:SM0603-C-JRL | |
| C40 | 0.1µ | MyModules:SM0603-C-JRL | |
| C41 | 0.1µ | MyModules:SM0603-C-JRL | |
| C42 | 0.1µ | MyModules:SM0603-C-JRL | |
| C43 | 0.1µ | MyModules:SM0603-C-JRL | |
| C44 | 0.1µ | MyModules:SM0603-C-JRL | |
| C45 | 10μF | MyModules:jrl_c_elec_5x5.3 |
Show the other 288
| C46 | 10μF | MyModules:jrl_c_elec_5x5.3 | |
| C47 | 0.1µ | MyModules:SM0603-C-JRL | |
| C48 | 0.1µ | MyModules:SM0603-C-JRL | |
| C49 | 0.1µ | MyModules:SM0603-C-JRL | |
| C5 | 22pF | MyModules:SM0603-C-JRL | |
| C50 | 0.1µ | MyModules:SM0603-C-JRL | |
| C51 | 0.1µ | MyModules:SM0603-C-JRL | |
| C6 | 270pF | MyModules:SM0603-C-JRL | |
| C7 | 100p | MyModules:SM0603-C-JRL | |
| C8 | 47pF | MyModules:SM0603-C-JRL | |
| C9 | 100p | MyModules:SM0603-C-JRL | |
| D1 | LM4040-10.0 | MyModules:SOT23-132-JRL | |
| D10 | LED | MyModules:3MM-LED-C1A2 | |
| D11 | LED | MyModules:3MM-LED-C1A2 | |
| D12 | LED | MyModules:3MM-LED-C1A2 | |
| D13 | LED | MyModules:3MM-LED-C1A2 | |
| D14 | 1N4148 | MyModules:SOD323-C1A2 | |
| D15 | LED | MyModules:3MM-LED-C1A2 | |
| D16 | 1N914 | MyModules:SOD323-C1A2 | |
| D17 | S1BB | MyModules:SMB-1C2A | |
| D18 | S1BB | MyModules:SMB-1C2A | |
| D19 | LED | MyModules:3MM-LED-C1A2 | |
| D2 | LM4040-5.0 | MyModules:SOT23-132-JRL | |
| D20 | 1N4148 | MyModules:SOD323-C1A2 | |
| D21 | 1N4148 | MyModules:SOD323-C1A2 | |
| D22 | 1N4148 | MyModules:SOD323-C1A2 | |
| D3 | 1N4148 | MyModules:SOD323-C1A2 | |
| D4 | LM4040-10.0 | MyModules:SOT23-132-JRL | |
| D5 | 1N4148 | MyModules:SOD323-C1A2 | |
| D6 | 1N4148 | MyModules:SOD323-C1A2 | |
| D7 | 1N4148 | MyModules:SOD323-C1A2 | |
| D8 | 1N4148 | MyModules:SOD323-C1A2 | |
| D9 | 1N4148 | MyModules:SOD323-C1A2 | |
| F1 | PTC 0.1A | Capacitors_SMD:C_0805 | |
| F2 | PTC 0.1A | Capacitors_SMD:C_0805 | |
| G*** | LOGO | LOGO | |
| J1 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J10 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J11 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J12 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J13 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J14 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J15 | JACK_MONO_SW | MyModules:PJ-301B-JACK-SLOTS | |
| J16 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J17 | PJ301B | MyModules:PJ-301B-JACK-SLOTS | |
| J18 | PJ301B | MyModules:PJ-301B-JACK-SLOTS | |
| J2 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J3 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J4 | PJ301B | MyModules:PJ-301B-JACK-SLOTS | |
| J5 | PJ301B | MyModules:PJ-301B-JACK-SLOTS | |
| J6 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J7 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J8 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| J9 | PJ301BM | MyModules:PJ-301B-JACK-SLOTS | |
| P1 | CONN_01X08 | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | |
| P2 | CONN_02X05 | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | |
| P3 | CONN_01X03 | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | |
| P4 | CONN_01X08 | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | |
| P5 | CONN_01X02 | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | |
| P6 | CONN_02X03 | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm | |
| Q1 | PMBT2369 | MyModules:SOT23-132-JRL | |
| Q10 | 2SK208-GR | MyModules:SOT23-132-JRL | |
| Q11 | 2SC4738 | MyModules:SOT416-SC75 | |
| Q12 | 2SA1832 | MyModules:SOT416-SC75 | |
| Q13 | 2SA1832 | MyModules:SOT416-SC75 | |
| Q14 | 2SA1832 | MyModules:SOT416-SC75 | |
| Q15 | 2SC4738 | MyModules:SOT416-SC75 | |
| Q2 | 2SK208-GR | MyModules:SOT23-132-JRL | |
| Q3 | 2SA1618 | MyModules:SOT753_TSOP5_SC-74A | |
| Q4 | 2SC4207 | MyModules:SOT753_TSOP5_SC-74A | |
| Q5 | 2SK208-GR | MyModules:SOT23-132-JRL | |
| Q6 | MMBF4391LT1G | MyModules:SOT23-132-JRL | |
| Q7 | 2SA1832 | MyModules:SOT416-SC75 | |
| Q8 | PMBT2369 | MyModules:SOT23-132-JRL | |
| Q9 | 2SK208-GR | MyModules:SOT23-132-JRL | |
| R1 | 1K | MyModules:SM0603-R-JRL | |
| R10 | 100K | MyModules:SM0603-R-JRL | |
| R100 | 15K | MyModules:SM0603-R-JRL | |
| R101 | 33K | MyModules:SM0603-R-JRL | |
| R102 | 10k | MyModules:SM0603-R-JRL | |
| R103 | 100K | MyModules:SM0603-R-JRL | |
| R104 | 5.6K | MyModules:SM0603-R-JRL | |
| R105 | 100K | MyModules:SM0603-R-JRL | |
| R106 | 68K | MyModules:SM0603-R-JRL | |
| R107 | 100 | MyModules:SM0603-R-JRL | |
| R108 | 100K | MyModules:SM0603-R-JRL | |
| R109 | 1.5K | MyModules:SM0603-R-JRL | |
| R11 | 2.2K | MyModules:SM0603-R-JRL | |
| R110 | 100K | MyModules:SM0603-R-JRL | |
| R111 | 1.5K | MyModules:SM0603-R-JRL | |
| R112 | 330K | MyModules:SM0603-R-JRL | |
| R113 | 1K | MyModules:SM0603-R-JRL | |
| R114 | 6.8K | MyModules:SM0603-R-JRL | |
| R115 | 10K | MyModules:SM0603-R-JRL | |
| R116 | 15K | MyModules:SM0603-R-JRL | |
| R117 | 22K | MyModules:SM0603-R-JRL | |
| R118 | 1meg | MyModules:SM0603-R-JRL | |
| R119 | 1meg | MyModules:SM0603-R-JRL | |
| R12 | 1K | MyModules:SM0603-R-JRL | |
| R120 | 10K | MyModules:SM0603-R-JRL | |
| R121 | 15K | MyModules:SM0603-R-JRL | |
| R122 | 100K | MyModules:SM0603-R-JRL | |
| R123 | 3.3K | MyModules:SM0603-R-JRL | |
| R124 | 10K | MyModules:SM0603-R-JRL | |
| R125 | 1K | MyModules:SM0603-R-JRL | |
| R126 | 4.7K | MyModules:SM0603-R-JRL | |
| R127 | 180K | MyModules:SM0603-R-JRL | |
| R128 | 1meg | MyModules:SM0603-R-JRL | |
| R129 | 1K | MyModules:SM0603-R-JRL | |
| R13 | 100K | MyModules:SM0603-R-JRL | |
| R130 | 1K | MyModules:SM0603-R-JRL | |
| R131 | 33K | MyModules:SM0603-R-JRL | |
| R132 | 330 | MyModules:SM0603-R-JRL | |
| R133 | 100K | MyModules:SM0603-R-JRL | |
| R134 | 330 | MyModules:SM0603-R-JRL | |
| R135 | 15K | MyModules:SM0603-R-JRL | |
| R136 | 47K | MyModules:SM0603-R-JRL | |
| R137 | 15K | MyModules:SM0603-R-JRL | |
| R138 | 15K | MyModules:SM0603-R-JRL | |
| R139 | 47K | MyModules:SM0603-R-JRL | |
| R14 | 10K | MyModules:SM0603-R-JRL | |
| R140 | 100 | MyModules:SM0603-R-JRL | |
| R141 | 47K | MyModules:SM0603-R-JRL | |
| R142 | 100K | MyModules:SM0603-R-JRL | |
| R143 | 220K | MyModules:SM0603-R-JRL | |
| R144 | 68K | MyModules:SM0603-R-JRL | |
| R145 | 47K | MyModules:SM0603-R-JRL | |
| R146 | 47K | MyModules:SM0603-R-JRL | |
| R147 | 47K | MyModules:SM0603-R-JRL | |
| R148 | 100K | MyModules:SM0603-R-JRL | |
| R149 | 120K | MyModules:SM0603-R-JRL | |
| R15 | 47K | MyModules:SM0603-R-JRL | |
| R150 | 33K | MyModules:SM0603-R-JRL | |
| R16 | 100K | MyModules:SM0603-R-JRL | |
| R17 | 150K | MyModules:SM0603-R-JRL | |
| R18 | 100K | MyModules:SM0603-R-JRL | |
| R19 | 200K | MyModules:SM0603-R-JRL | |
| R2 | 1K | MyModules:SM0603-R-JRL | |
| R20 | 180K | MyModules:SM0603-R-JRL | |
| R21 | 200K | MyModules:SM0603-R-JRL | |
| R22 | 10K | MyModules:SM0603-R-JRL | |
| R23 | 100K | MyModules:SM0603-R-JRL | |
| R24 | 150K | MyModules:SM0603-R-JRL | |
| R25 | 680K | MyModules:SM0603-R-JRL | |
| R26 | 560 | MyModules:SM0603-R-JRL | |
| R27 | 200K | MyModules:SM0603-R-JRL | |
| R28 | 100K | MyModules:SM0603-R-JRL | |
| R29 | 1meg | MyModules:SM0603-R-JRL | |
| R3 | 2.2K | MyModules:SM0603-R-JRL | |
| R30 | 100K | MyModules:SM0603-R-JRL | |
| R31 | 100K | MyModules:SM0603-R-JRL | |
| R32 | 150K | MyModules:SM0603-R-JRL | |
| R33 | 39K | MyModules:SM0603-R-JRL | |
| R34 | 4.7K | MyModules:SM0603-R-JRL | |
| R35 | 5.6K | MyModules:SM0603-R-JRL | |
| R36 | 18K | MyModules:SM0603-R-JRL | |
| R37 | 91K | MyModules:SM0603-R-JRL | |
| R38 | 10K NTC | MyModules:SM0805-HAND | |
| R39 | 68K | MyModules:SM0603-R-JRL | |
| R4 | 2.2K | MyModules:SM0603-R-JRL | |
| R40 | 1.8K | MyModules:SM0603-R-JRL | |
| R41 | 33K | MyModules:SM0603-R-JRL | |
| R42 | 820 | MyModules:SM0603-R-JRL | |
| R43 | 68K | MyModules:SM0603-R-JRL | |
| R44 | 1.5K | MyModules:SM0603-R-JRL | |
| R45 | 1.5M | MyModules:SM0603-R-JRL | |
| R46 | 560 | MyModules:SM0603-R-JRL | |
| R47 | 56K | MyModules:SM0603-R-JRL | |
| R48 | 18K | MyModules:SM0603-R-JRL | |
| R49 | 1.5M | MyModules:SM0603-R-JRL | |
| R5 | 10K | MyModules:SM0603-R-JRL | |
| R50 | 68K | MyModules:SM0603-R-JRL | |
| R51 | 10K | MyModules:SM0603-R-JRL | |
| R52 | 33K | MyModules:SM0603-R-JRL | |
| R53 | 270 | MyModules:SM0603-R-JRL | |
| R54 | 68K | MyModules:SM0603-R-JRL | |
| R55 | 22K | MyModules:SM0603-R-JRL | |
| R56 | 560 | MyModules:SM0603-R-JRL | |
| R57 | 4.7K | MyModules:SM0603-R-JRL | |
| R58 | 1.8K | MyModules:SM0603-R-JRL | |
| R59 | 1meg | MyModules:SM0603-R-JRL | |
| R6 | 1K | MyModules:SM0603-R-JRL | |
| R60 | 10k | MyModules:SM0603-R-JRL | |
| R61 | 3.3K | MyModules:SM0603-R-JRL | |
| R62 | 100K | MyModules:SM0603-R-JRL | |
| R63 | 220K | MyModules:SM0603-R-JRL | |
| R64 | 18K | MyModules:SM0603-R-JRL | |
| R65 | 68K | MyModules:SM0603-R-JRL | |
| R66 | 12K | MyModules:SM0603-R-JRL | |
| R67 | 10K | MyModules:SM0603-R-JRL | |
| R68 | 30K | MyModules:SM0603-R-JRL | |
| R69 | 10k | MyModules:SM0603-R-JRL | |
| R7 | 1K | MyModules:SM0603-R-JRL | |
| R70 | 33K | MyModules:SM0603-R-JRL | |
| R71 | 2.2K | MyModules:SM0603-R-JRL | |
| R72 | 10K | MyModules:SM0603-R-JRL | |
| R73 | 150K | MyModules:SM0603-R-JRL | |
| R74 | 68K | MyModules:SM0603-R-JRL | |
| R75 | 100K | MyModules:SM0603-R-JRL | |
| R76 | 100K | MyModules:SM0603-R-JRL | |
| R77 | 100K | MyModules:SM0603-R-JRL | |
| R78 | 100K | MyModules:SM0603-R-JRL | |
| R79 | 100K | MyModules:SM0603-R-JRL | |
| R8 | 100K | MyModules:SM0603-R-JRL | |
| R80 | 4.7K | MyModules:SM0603-R-JRL | |
| R81 | 560 | MyModules:SM0603-R-JRL | |
| R82 | 1.8K | MyModules:SM0603-R-JRL | |
| R83 | 8.2K | MyModules:SM0603-R-JRL | |
| R84 | 30K | MyModules:SM0603-R-JRL | |
| R85 | 10K | MyModules:SM0603-R-JRL | |
| R87 | 560 | MyModules:SM0603-R-JRL | |
| R88 | 68K | MyModules:SM0603-R-JRL | |
| R9 | 100K | MyModules:SM0603-R-JRL | |
| R90 | 1K | MyModules:SM0603-R-JRL | |
| R91 | 15K | MyModules:SM0603-R-JRL | |
| R92 | 1meg | MyModules:SM0603-R-JRL | |
| R93 | 560 | MyModules:SM0603-R-JRL | |
| R94 | 18K | MyModules:SM0603-R-JRL | |
| R95 | 15K | MyModules:SM0603-R-JRL | |
| R96 | 22K | MyModules:SM0603-R-JRL | |
| R97 | 68K | MyModules:SM0603-R-JRL | |
| R98 | 10k | MyModules:SM0603-R-JRL | |
| R99 | 47K | MyModules:SM0603-R-JRL | |
| SW1 | SPDT | MyModules:SS-12F108-1P2T-SLIDE | |
| SW2 | SPDT | MyModules:SS-12F108-1P2T-SLIDE | |
| SW3 | BF3-1050 | MyModules:B3F-1050-OMRON | |
| SW4 | SPDT | MyModules:SS-12F108-1P2T-SLIDE | |
| SW5 | DP6T-ALPHA-SR2511 | MyModules:SR2511-ALPHA | |
| TC1 | 1K 3300ppm/K | MyModules:SM0805-HAND | |
| TP1 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP10 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP2 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP3 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP4 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP5 | CONN_1 | MyModules:TEST_POINT_LOOP_4592 | |
| TP6 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP7 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP8 | TEST_POINT | MyModules:TEST_POINT_5000_SERIES | |
| TP9 | CONN_1 | MyModules:TEST_POINT_LOOP_4592 | |
| U1 | TL072- | MyModules:TSSOP8-JRL | |
| U10 | TL072- | MyModules:TSSOP8-JRL | |
| U11 | TL072- | MyModules:TSSOP-8_4.4x3mm_Pitch0.65mm | |
| U12 | TA75S558F | MyModules:SOT753_TSOP5_SC-74A | |
| U13 | TA75S558F | MyModules:SOT753_TSOP5_SC-74A | |
| U14 | TA75S558F | MyModules:SOT753_TSOP5_SC-74A | |
| U15 | TA75S558F | MyModules:SOT753_TSOP5_SC-74A | |
| U16 | TA75S558F | MyModules:SOT753_TSOP5_SC-74A | |
| U17 | CD4052 | Housings_SSOP:TSSOP-16_4.4x5mm_Pitch0.65mm | |
| U18 | TA75S558F | MyModules:SOT753_TSOP5_SC-74A | |
| U19 | TL072- | MyModules:TSSOP8-JRL | |
| U2 | TL072- | MyModules:TSSOP8-JRL | |
| U20 | CD4013 | Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm | |
| U21 | TA75S558F | MyModules:SOT753_TSOP5_SC-74A | |
| U3 | TL072- | MyModules:TSSOP8-JRL | |
| U4 | CD40106 | Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm | |
| U5 | CD4027 | Housings_SSOP:TSSOP-16_4.4x5mm_Pitch0.65mm | |
| U6 | LM13700 | MyModules:SO16-JRL | |
| U7 | LM13700 | MyModules:SO16-JRL | |
| U8 | LM13700 | MyModules:SO16-JRL | |
| U9 | TL072- | MyModules:TSSOP8-JRL | |
| VR1 | 50K(A) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR10 | 100K(A) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR11 | 100K | MyModules:TT-BI-67W | |
| VR12 | 10K | MyModules:TT-BI-67W | |
| VR13 | 20K | MyModules:TT-BI-67W | |
| VR14 | 22K | MyModules:TC33X-2 | |
| VR15 | 50K | MyModules:RD901F-ALPHA-POT-T18 | |
| VR16 | 100K | MyModules:TC33X-2 | |
| VR17 | 50K(B) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR18 | 50K(B) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR19 | 50K(B) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR2 | 50K(A) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR20 | 50K(A) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR21 | 50K(A) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR22 | 50K(A) | MyModules:RD901F-ALPHA-POT-T18 | |
| VR23 | 100K(B) | MyModules:TC33X-2 | |
| VR24 | 22K | MyModules:TC33X-2 | |
| VR25 | 100K | MyModules:TC33X-2 | |
| VR26 | 100K | MyModules:RD901F-ALPHA-POT-T18 | |
| VR27 | 10K | MyModules:TC33X-2 | |
| VR28 | 10K | MyModules:TC33X-2 | |
| VR3 | 100 | MyModules:TC33X-2 | |
| VR4 | 50K | MyModules:RD901F-ALPHA-POT-T18 | |
| VR5 | 50K | MyModules:RD901F-ALPHA-POT-T18 | |
| VR6 | 50K | MyModules:RD901F-ALPHA-POT-T18 | |
| VR7 | 100K | MyModules:TC33X-2 | |
| VR8 | 100K | MyModules:RD901F-ALPHA-POT-T18 | |
| VR9 | 100K(A) | MyModules:RD901F-ALPHA-POT-T18 |
Provenance
- Repository
- minisystem/810 ↗
- Commit
- unknown
- Licence
- CC-BY-4.0
How it is used
Trace's agent reads this design as context — what parts a board like this carries, how they are grouped across sheets, what a plausible layer stack and board size look like for the job. It is not copied. The licence above is permissive, and it, the repository and the commit are recorded so the origin of anything derived from it is always answerable.