Copperhead
Copperhead is an open source PCB design by copperheadhq with 160 components (56 distinct parts). It is built around the 74AHC1G14, MCF5213-LQFP100, 74HC125, MAX202 and more.
Hardware as fast as software.
Real boards the engine drafts cleanly, kept in the repo so the side-by-side comparison is browsable without installing KiCad's demos or running the sweep. Everything here is a verbatim copy of one sweep run's output: the report, the renders, the drafted schematic, and the IR the netlist reduced to.
Every board here drafts with connectivity exact (lost=0, gained=0), and every one carries a licence that permits redistribution. "KiCad demo" means a board with no licence file of its own that the KiCad project distributes in the kicad-demos package; those are included on that provenance.
Built around
Parts list
160 components, 56 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74AHC1G14 | SOT353 | U101 |
| 1 | MCF5213-LQFP100 | LQFP-100_14x14mm_P0.5mm | U102 |
| 1 | 74HC125 | SOIC-14_3.9x8.7mm_P1.27mm | U201 |
| 3 | MAX202 | SOIC-16_3.9x9.9mm_P1.27mm | U202, U203, U204 |
| 1 | PCA82C251 | SOIC-8_3.9x4.9mm_P1.27mm | U205 |
| 1 | XCR3256-TQ144 | TQFP-144_20x20mm_P0.5mm | U301 |
| 1 | 3906 | SOT23EBC | Q101 |
| 1 | 8MHz | Crystal_HC18-U_Horizontal | Y101 |
| 1 | JACK_2P | JACK_ALIM | J201 |
| 1 | CONN_6 | PinHeader_1x06_P2.54mm_Vertical | P301 |
| 1 | CONN_2X2 | PinHeader_2x02_P2.54mm_Vertical | P302 |
| 1 | CONN_20X2 | PinHeader_2x20_P2.54mm_Vertical | P303 |
| 2 | SW_PUSH | SW_PUSH_SMALL | ABRT_SW101, RST_SW101 |
| 6 | CONN_1 | PinHeader_1x01_P2.54mm_Vertical | ALLPST101, CLKOUT101, GND101, RS201, TA-101, VREF201 |
| 1 | CONN_13X2 | PinHeader_2x13_P2.54mm_Vertical | BDM_PORT101 |
| 1 | CONN_2X2 | PinHeader_2x02_P2.54mm_Vertical | CAN_EN201 |
| 4 | JUMPER | PinHeader_1x02_P2.54mm_Vertical | CAN_TERM201, CT101, VDDA101, VX_EN201 |
| 3 | CONN_3 | PinHeader_1x03_P2.54mm_Vertical | COM_SEL201, COM_SEL202, COM_SEL203 |
| 1 | FUSE | FSUPCMS | F201 |
| 1 | JUMPER_TRIPLE | PinHeader_2x03_P2.54mm_Vertical | JP101 |
Show 36 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | JUMPER | PinHeader_1x02_P2.54mm_Vertical | JP201 |
| 1 | DS1818 | TO-92 | LV101 |
| 1 | CONN_30X2 | PinHeader_2x30_P2.54mm_Vertical | MCU_PORT201 |
| 4 | CONN_4X2 | PinHeader_2x04_P2.54mm_Vertical | PULUPEN201, UART_EN201, UART_EN202, UART_EN203 |
| 2 | R | R_0805_2012Metric | RCAN201, RCAN202 |
| 2 | SW_PUSH | SW_PUSH_SMALL | SW201, SW202 |
| 1 | SWITCH_INV | SW_SPDT | SW_ONOFF201 |
| 1 | CONN_2 | Altech_AK300_1x02_P5.00mm_45-Degree | TB201 |
| 3 | DB9 | DSUB-9_Female_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | UARTCAN201, UARTCAN202, UARTCAN203 |
| 1 | LT1129_QPACK | TO-263-5_TabPin3 | VR201 |
| 5 | LED | LED_1206_3216Metric | LED201, LED202, LED203, LED204, LED205 |
| 2 | LED_RED | LED_1206_3216Metric | LEDABRT101, LED_RST101 |
| 2 | BAT54 | D_SOT-23_ANK | D101, D102 |
| 1 | 1N4004 | D_DO-15_P12.70mm_Horizontal | D201 |
| 2 | LED | LED_1206_3216Metric | D301, D302 |
| 1 | BEAD | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | FB101 |
| 2 | 10uH | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | L101, L102 |
| 43 | 100nF | C_0805_2012Metric | C101, C103, C104, C109, C110, C111, C112, C113 +35 |
| 2 | 1nF | C_0805_2012Metric | C102, C105 |
| 2 | 10pF | C_0805_2012Metric | C106, C107 |
| 1 | 10uF | SM1206POL | C108 |
| 1 | 100uF | SM1206POL | C119 |
| 1 | 10uF | CP_Radial_D8.0mm_P5.00mm | C212 |
| 1 | 220uF | CP_Radial_D8.0mm_P5.00mm | C215 |
| 13 | 4,7K | R_0805_2012Metric | R101, R102, R106, R107, R108, R109, R110, R111 +5 |
| 7 | 270 | R_0805_2012Metric | R103, R116, R202, R203, R204, R206, R207 |
| 4 | 1K | R_0805_2012Metric | R104, R210, R303, R304 |
| 1 | 20K | R_0805_2012Metric | R105 |
| 1 | 0 | R_0805_2012Metric | R113 |
| 1 | 22 | R_0805_2012Metric | R114 |
| 1 | 4.7K | R_0805_2012Metric | R115 |
| 12 | 10K | R_0805_2012Metric | R117, R118, R119, R120, R121, R122, R123, R124 +4 |
| 1 | 1M | R_0805_2012Metric | R125 |
| 1 | 62 | R_0805_2012Metric | R209 |
| 1 | 4K7 | R_0805_2012Metric | R301 |
| 1 | 3,3 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R302 |