peterpolidoro/camera-gpio-interface-pcbKiCad design and documentation for a passive interface board between three FLIR Blackfly S cameras, a pyControl breakout and a Neuropixels OneBox: screw-terminal camera connectors, BNC inputs and outputs, a 50-pin instrument port, USB power.
Camera gpio interface pcb is an open-source printed circuit board by peterpolidoro, from the peterpolidoro/camera-gpio-interface-pcb repository on GitHub. It is a 4-layer board of 100 × 60 mm with 158 parts on 149 nets, routed with 1,174 tracks and 171 vias.
It is built around the SN74LV541ARKSR, SN74LVC1G125DRYR(UMW) and SN74LVC2G17DRYR, with the SN74LVC1G07DRYR, USBLC6-2P6 and TPS73733QDRBRQ1 among its other parts. Its parts include 85 resistors, 26 ICs, 21 capacitors, 11 connectors and 8 diodes. It belongs with the interfaces and adapters boards of this library.
Interface board for the three FLIR Blackfly S cameras in the Janelia Dudman lab joystick rig: pluggable screw-terminal camera connectors, two BNC inputs from the pyControl breakout, four 3.3 V BNC outputs to a Neuropixels OneBox, an InstrumentPort-Digital-50 with every camera line tapped, and USB power. No MCU, no firmware, no configuration jumpers.
Status, October 2026: v1.0 is the fabricated revision. Five assembled boards were ordered from JLCPCB on 2026-09-26 (fabrication log), and one is installed in the rig, wired to the three cameras, the pyControl breakout and the OneBox. Bench results per board go in the bring-up log.
The block below is written by make docs from the KiCad sources: renders, key
dimensions, and links to the schematic, BOM, STEP model and enclosure geometry.
Do not edit between the markers; run make docs instead.
More views, including both elevations, are in the generated documentation.
The documentation site, with the board turning and its design blocks clickable: https://peterpolidoro.github.io/camera-gpio-interface-pcb/.
| Property | Value |
|---|---|
| Outline | 100.0 × 60.0 mm, 5.0 mm corner radius |
| Thickness | 1.6 mm |
| Copper layers | 4 |
| Mounting holes | 4 × 3.2 mm |
| Connectors and controls | 11 |
| Bill of materials | 26 distinct parts, 151 placements |
| Document | File |
|---|---|
| Schematic, all sheets, PDF | camera-gpio-interface-pcb-schematic.pdf |
| Schematic sheets, SVG (11) | schematic/ |
| Schematic, instance overviews and details, PDF | Review booklet |
| Design blocks placed (7), one page each | blocks/README.md |
| Board view: the model and the top render with the design blocks numbered | board-view.md |
| Subsystem sheets (3), from their recipes | subsystems/README.md |
| Assembly view, top | assembly-top.svg |
| Assembly view, bottom | assembly-bottom.svg |
| Assembled board, STEP, for FreeCAD | camera-gpio-interface-pcb-assembled.step |
| Assembled board, glTF, for a viewer (the library's materials written in) | camera-gpio-interface-pcb.glb |
| Bill of materials | table · CSV |
| Outline and mounting holes, dimensioned drawing | SVG · PDF · PNG |
| Board dimensions and stackup | board-dimensions.md |
| Board geometry, machine readable | board-geometry.json |
| Mounting holes | mounting-holes.csv |
| Connector locations | connectors.csv |
Millimetres from the centre of the board outline, X right and Y up, looking at the top of the board. Extents are the part's courtyard, which is what a panel cutout has to clear. Full tables in board-dimensions.md.
The outline and the mounting holes dimensioned, as KiCad draws them: SVG · PDF; the cross is the centre the tables measure from.
Mounting holes
| Ref | X (mm) | Y (mm) | Drill (mm) |
|---|---|---|---|
| H101 | -45.0 | 25.0 | 3.2 |
| H102 | 45.0 | 25.0 | 3.2 |
| H103 | 45.0 | -25.0 | 3.2 |
| H104 | -45.0 | -25.0 | 3.2 |
Connectors and controls
| Ref | Part | X (mm) | Y (mm) | Rot | Extent X (mm) | Extent Y (mm) |
|---|---|---|---|---|---|---|
| J301 | HL-BNC-KHDA | -24.0 | -23.0 | 0.0 | -30.5 to -17.5 | -29.5 to -16.5 |
| J302 | HL-BNC-KHDA | 0.0 | -23.0 | 0.0 | -6.5 to 6.5 | -29.5 to -16.5 |
| J401 | HL-BNC-KHDA | 24.0 | -23.0 | 0.0 | 17.5 to 30.5 | -29.5 to -16.5 |
| J402 | HL-BNC-KHDA | -24.0 | 1.0 | 0.0 | -30.5 to -17.5 | -5.5 to 7.5 |
| J403 | HL-BNC-KHDA | 0.0 | 1.0 | 0.0 | -6.5 to 6.5 | -5.5 to 7.5 |
| J404 | HL-BNC-KHDA | 24.0 | 1.0 | 0.0 | 17.5 to 30.5 | -5.5 to 7.5 |
| J501 | FH12-50S-0.5SVA(54) | 44.0 | -4.0 | 270.0 | 41.2 to 46.8 | -18.75 to 10.75 |
| J701 | TBH-1x06-3.5mm | -25.0 | 24.0 | 180.0 | -36.7 to -13.3 | 19.25 to 27.5 |
| J901 | USB-C | -44.0 | 1.0 | 90.0 | -46.31 to -41.69 | -4.05 to 6.05 |
| J1201 | TBH-1x06-3.5mm | 0.0 | 24.0 | 180.0 | -11.7 to 11.7 | 19.25 to 27.5 |
| J1401 | TBH-1x06-3.5mm | 25.0 | 24.0 | 180.0 | 13.3 to 36.7 | 19.25 to 27.5 |
The v1.0 boards were ordered assembled from JLCPCB from the package built at
commit 5ddb425. The fabrication log records the
commit, the source hashes and the hash of every file JLCPCB received.
fab/camera-gpio-interface-pcb/ holds the
package rebuilt from the same sources on 2026-10-12: upload
camera-gpio-interface-pcb-jlcpcb.zip, jlcpcb-bom.csv and
jlcpcb-camera-gpio-interface-pcb-all-pos.csv to order more boards. The BOM
and placement files are byte-identical to the uploaded ones; the gerbers
differ only by the creation time in their headers. To fabricate elsewhere,
plot the layers and drill files from kicad/camera-gpio-interface-pcb.kicad_pcb
in KiCad. JLCPCB's placement rotation differs from KiCad's for some
footprints, so check the assembly preview before confirming an order.
Opening, editing and fabricating the board needs only KiCad 10; the schematic
and board carry their own copies of every symbol and footprint. The board was
drawn from a shared KiCad library and toolchain, which is needed only to
regenerate docs/generated/, the fabrication package or the composed sheets.
docs/development.md describes that toolchain, the
environment, the sibling repositories and the layout record. Agent guidance is
in AGENTS.md and .agents/.
Hardware design files and documentation are CC-BY-SA-4.0; code and automation are 3-clause BSD. See LICENSE.
CITATION.cff carries the citation metadata; GitHub renders it under "Cite this repository".
| Qty | Value | Footprint | References |
|---|---|---|---|
| 50 | 100 | Resistor_SMD:R_0402_1005Metric | R403, R505, R506, R507, R1107, R1108, R1207, R1208, R1209, R1210, R1211, R1407, R1408, R1409, R1410, R1411 +34 |
| 16 | 100nF | Capacitor_SMD:C_0402_1005Metric | C401, C502, C503, C504, C505, C701, C702, C703, C901, C1103, C1201, C1202, C1203, C1401, C1402, C1403 |
| 10 | USBLC6-2P6 | orb_weaver_smd:USBLC6-2P6_SOT-666 | U301, U402, U403, U704, U705, U901, U1204, U1205, U1404, U1405 |
| 7 | 680 | Resistor_SMD:R_0402_1005Metric | R201, R301, R302, R401, R706, R1206, R1406 |
| 7 | APHHS1005CGCK | orb_weaver_smd:LED_0402-1005_KNB | D201, D301, D302, D401, D701, D1201, D1401 |
| 6 | HL-BNC-KHDA | orb_weaver_connectors:CONN_BNC_HL-BNC-KHDA | J301, J302, J401, J402, J403, J404 |
| 5 | 4.7k | Resistor_SMD:R_0402_1005Metric | R702, R1103, R1104, R1202, R1402 |
| 4 | 100k | Resistor_SMD:R_0402_1005Metric | R1101, R1102, R1105, R1106 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R501, R502, R503, R504 |
| 4 | 470 | Resistor_SMD:R_0603_1608Metric | R402, R705, R1205, R1405 |
| 4 | Mounting Hole 3.2mm M3 | MountingHole:MountingHole_3.2mm_M3 | H101, H102, H103, H104 |
| 4 | SN74LV541ARKSR | orb_weaver_smd:Texas_RKS0020A_VQFN-20-1EP_2.5x4.5mm_P0.5mm_EP1x3mm | U501, U502, U503, U504 |
| 4 | SN74LVC1G125DRYR | orb_weaver_smd:DRY6 | U401, U702, U1202, U1402 |
| 4 | SN74LVC2G17DRYR | orb_weaver_smd:DRY6 | U701, U1101, U1201, U1401 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R701, R1201, R1401 |
| 3 | 220 | Resistor_SMD:R_0603_1608Metric | R704, R1204, R1404 |
| 3 | 820 | Resistor_SMD:R_0402_1005Metric | R703, R1203, R1403 |
| 3 | Fiducial 1mm Mask 2mm | Fiducial:Fiducial_1mm_Mask2mm | FID101, FID102, FID103 |
| 3 | SN74LVC1G07DRYR | orb_weaver_smd:DRY6 | U703, U1203, U1403 |
| 3 | TBH-1x06-3.5mm | orb_weaver_tht:PhoenixContact_MCV_1,5_6-G-3.5_1x06_P3.50mm_Vertical | J701, J1201, J1401 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1001, C1002 |
| 2 | 470pF | Capacitor_SMD:C_0402_1005Metric | C1101, C1102 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R901, R902 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C501 |
| 1 | FH12-50S-0.5SVA(54) | orb_weaver_connectors:Hirose_FH12-50S-0.5SVA_1x50-4MP_P0.5mm_Vertical | J501 |
| 1 | MBR120VLSFT1G | orb_weaver_smd:SOD-123FL | D901 |
| 1 | TPS73733QDRBRQ1 | orb_weaver_smd:TPS737Q1 | U1001 |
| 1 | USB-C | orb_weaver_connectors:USB_C_Receptacle_GCT_USB4145-03-0070-C_16P_Vertical | J901 |
It measures 100 × 60 mm and has 4 copper layers, 1.6 mm thick.
158 parts, built around the SN74LV541ARKSR, SN74LVC1G125DRYR(UMW), SN74LVC2G17DRYR and SN74LVC1G07DRYR. 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 peterpolidoro/camera-gpio-interface-pcb repository on GitHub, at the commit this page was made from: the board is kicad/camera-gpio-interface-pcb.kicad_pcb and its schematic kicad/5v_to_3v3_tps73733.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask peterpolidoro before reusing the design.
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