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4 layers73.5 × 76.5 mmOGS Comparator, the printed circuit board in 3D

Code related to the OGS

Size
73.5 × 76.5 mm
Copper layers
4
Thickness
1.6 mm
Parts
56
Nets
41
Pads
185
Tracks, vias
286, 116
Pours
6
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
16 Aug 2024
Updated
19 Oct 2026

Overview

OGS Comparator is an open-source printed circuit board by UChicago-Space-Program, from the UChicago-Space-Program/optical-ground-station repository on GitHub. It is a 4-layer board of 73.5 × 76.5 mm with 56 parts on 41 nets, routed with 286 tracks and 116 vias.

It is built around the 74LVC2G08 and BNX023-01L. Its parts include 28 capacitors, 13 ICs, 9 connectors and 4 resistors. It belongs with the FPGA and CPLD boards of this library.

Main components

2

README

README.md

This repository contains files from the Optical Ground Station.

  • Polarimeter Data Collection Contains data obtained from Polarimeter experiments and code to parse that data written by Juan Prieto
  • Telescope Control contains code to control the telescope and point it according to a predetermined path. Written by Rodrigo Spinola e Castro
  • Camera Control will have code to interface with the tracking camera. Written by Ashley Ashiku and Juan Prieto
  • Comparator will have KiCad 9.0 files for the OGS comparator circuit. Designed by Juan Prieto

Parts

56
QtyValueFootprintReferences
100.1 uFCapacitor_SMD:C_0805_2012MetricC7, C8, C9, C10, C11, C12, C13, C14, C25, C26
80.1ufCapacitor_SMD:C_0805_2012MetricC15, C16, C17, C18, C19, C20, C21, C22
4BUF602xDPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU6, U9, U11, U12
4TLV1831-Q1Package_TO_SOT_SMD:SOT-23-6U1, U2, U3, U4
31uFCapacitor_SMD:C_0805_2012MetricC4, C5, C24
210Resistor_SMD:R_0805_2012MetricR5, R6
210uFCapacitor_SMD:C_0805_2012MetricC3, C6
22.2nFCapacitor_SMD:C_0805_2012MetricC29, C30
251Resistor_SMD:R_0805_2012MetricR3, R4
2BNX023-01LFilter:Filter_Murata_BNX025FL8, FL9
2Comparator Output (BNC)OGS Comparator Footpring Library V.01:Molex BNCJ2, J4
2GND/REFConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ7, J8
2Molex 0731375003OGS Comparator Footpring Library V.01:Molex BNCJ9, J10
2Voltage Amplifier Input (BNC)OGS Comparator Footpring Library V.01:Molex BNCJ1, J5
10.1uFCapacitor_SMD:C_0805_2012MetricC2
12.2uFCapacitor_SMD:C_0805_2012MetricC23
14.7uFCapacitor_SMD:C_0805_2012MetricC1
174LVC2G08Package_SO:VSSOP-8_2.3x2mm_P0.5mmU13
1Power InputsConnector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_VerticalJ3
1Voltage Regulator (FPGA)Package_TO_SOT_THT:TO-220-3_VerticalU8
1Voltage Regulator (Threshold)Package_TO_SOT_THT:TO-220-3_VerticalU5
1Voltage Regulator +5VPackage_TO_SOT_THT:TO-220-3_VerticalU7
1Voltage Regulator -5VPackage_TO_SOT_THT:TO-220-3_VerticalU10

Questions

How big is the OGS Comparator PCB?

It measures 73.5 × 76.5 mm and has 4 copper layers, 1.6 mm thick.

What parts does the OGS Comparator use?

56 parts, built around the 74LVC2G08 and BNX023-01L. 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 OGS Comparator KiCad files?

From the UChicago-Space-Program/optical-ground-station repository on GitHub, at the commit this page was made from: the board is Comparator/OGS Comparator.kicad_pcb and its schematic Comparator/OGS Comparator.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the OGS Comparator design in my own project?

Its repository states no licence, so its author keeps all rights: ask UChicago-Space-Program before reusing the design.

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