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2 layers75 × 65 mmPi hat, the printed circuit board in 3D

GPIB Peripheral Emulator for GRiD Compass

Size
75 × 65 mm
Copper layers
2
Thickness
1.6 mm
Parts
61
Nets
75
Pads
342
Tracks, vias
579, 38
Pours
2
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
28 Oct 2025
Updated
15 Jul 2026

Overview

Pi hat is an open-source printed circuit board by vklachkov, from the vklachkov/blackgpib repository on GitHub, published under the MIT licence. It is a 2-layer board of 75 × 65 mm with 61 parts on 75 nets, routed with 579 tracks and 38 vias.

Its parts include 40 resistors, 7 ICs and 4 capacitors.

README

hardware/pico/README.md

BlackGPIB Pico

Photo

Components

PartValuePackageQuantityComment
GPIB Connector Female-90 Degree1
SN75160-SMD or DIP1
SN75161 / SN75162-SMD or DIP1
Resistor Pack (4x0603)3.3kΩ1206 (4x0603)2Front side of the board
Resistor Pack (4x0603)6.8kΩ1206 (4x0603)2Back side of the board
Ceramic Capacitor0.1µF12063Any for 5V, I used random 10V capacitor
Tantalum Capacitor100µFCase C (6032)1Any for 3.3V, I used random 10V capacitor
MicroSD Card Slot-SMD1LSCS
Pi Pico 2040-SMD1

Known problems

Rev 1

Because the Raspberry Pi Pico is positioned far from the edge of the board, not all micro-USB cables will fit.

When inserting the cable, hold it gently to prevent the SD card from popping out of the slot.

Parts

61
QtyValueFootprintReferences
203k0204_7R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34, R35, R36 +4
203kR0805R1, R2, R3, R4, R5, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20 +4
2C-EU050-024X044C050-024X044C3, C4
2C-EUC0805C0805C1, C2
2PINHD-1X51X05JP1, JP2
1dummyfp3UNK_HOLE_3
1dummyfp0UNK_HOLE_0
1dummyfp2UNK_HOLE_2
1dummyfp1UNK_HOLE_1
175160PDIL20IC1
175160SOSO20LIC2
175161PDIL20IC3
175161SOSO20LIC4
175162DIL24-3IC6
175162PDIL22-3IC5
175162SO24SOIC127P1030X265-24NIC7
1C24HP24HPPL1
1GPIB-PINHD-2X12GPIB-PINHD-2X12JP3
1OSHW-LOGOSOSHW-LOGO-SLOGO2
1RASPBERRY-PI+HEADERONLYRASPBERRY-PI-PLUS-HEADERONLYU$2

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Questions

How big is the Pi hat PCB?

It measures 75 × 65 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Pi hat use?

61 parts. 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.

Where can I download the Pi hat KiCad files?

From the vklachkov/blackgpib repository on GitHub, at the commit this page was made from: the board is hardware/pi-hat/untitled.kicad_pcb and its schematic hardware/pi-hat/untitled.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Pi hat design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).