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2 layers158.3 × 110 mmLathrum thesis, the printed circuit board in 3D

Lathrum thesis

Dylancyclone/thesis1

Undergraduate Honors thesis for graduation in 2022

Size
158.3 × 110 mm
Copper layers
2
Thickness
1.6 mm
Parts
80
Nets
232
Pads
595
Tracks, vias
1,460, 216
Pours
5
Routed
Yes
KiCad
KiCad 5 (file 20210424)
Created
7 Sep 2022
Updated
1 Oct 2022

Overview

Lathrum thesis is an open-source printed circuit board by Dylancyclone, from the Dylancyclone/thesis repository on GitHub. It is a 2-layer board of 158.3 × 110 mm with 80 parts on 232 nets, routed with 1,460 tracks and 216 vias.

It is built around the 74LVC1G07, MCP73871-2CCI/ML and RT9742ENGJ5, with the RT9742VGJ5, USB2504A-JT and SS-52100-001 among its other parts. Its parts include 25 resistors, 23 capacitors, 10 connectors, 9 ICs and 6 diodes. It belongs with the Raspberry Pi (Linux) boards of this library.

Main components

10

README

README.md

Building a Mobile Device that Leverages the Power of a Desktop Computer

ASU Barrett Undergraduate Thesis 2022

READ THE PAPER HERE

(Alternatively, see it on asu.edu)

Watch a timelapse of the paper here: https://youtu.be/VJ2HCxnmA_Y

Abstract

With the recent focus of attention towards remote work and mobile computing, the possibility of taking a powerful workstation wherever needed is enticing. However, even emerging laptops today struggle to compete with desktops in terms of cost, maintenance, and future upgrades. The price point of a powerful laptop is considerably higher compared to an equally powerful desktop computer, and most laptops are manufactured in a way that makes upgrading parts of the machine difficult or impossible, forcing a complete purchase in the event of failure or a component needing an upgrade.

In the case where someone already owns a desktop computer and must be mobile, instead of needing to purchase a second device at full price, it may be possible to develop a low-cost computer that has just enough power to connect to the existing desktop and run all processing there, using the mobile device only as a user interface.

This thesis will explore the development of a custom PCB that utilizes a Raspberry Pi Computer Module 4, as well as the development of a fork of the Open Source project Moonlight to stream a host machine's screen to a remote client. This implementation will be compared against other existing remote desktop solutions to analyze it's performance and quality.

Information

This repository contains all the files and resources used to produce my Honors Thesis.

Folders are self-explanatory.

Final PCB board

Parts

80
QtyValueFootprintReferences
710uCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC8, C10, C11, C19, C20, C21, C22
5100nCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC7, C9, C12, C13, C14
41kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR6, R14, R17, R19
310uFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC1, C3, C6
3RedLED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolderD1, D2, D6
3SS-52100-001SS-52100-001:SS-52100-001J7, J8, J9
21.87MResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR1, R7
2100kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR9, R11
2100uFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC5, C23
21KResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR15, R16
2200kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR5, R8
227pFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC17, C18
236K 1%Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR22, R23
24.7uFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC15, C16
2470RResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR20, R21
25.1kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR3, R4
2FFC3B07-20-TFFC3B07-20-T:GCT_FFC3B07-20-TJ4, J10
2GreenLED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolderD3, D5
2TPD4EUSB30Package_SON:USON-10_2.5x1.0mm_P0.5mmU6, U7
2TestPointTestPoint:TestPoint_Pad_4.0x4.0mmTP1, TP2
10.1uFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC2
11.0kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR12
112K 1%Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR24
112k 1%Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR18
115K 1%Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR25
115kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR10
12.2uFCapacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolderC4
124MHzCrystal:Crystal_SMD_HC49-SDY1
1270kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR13
1340kResistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR2
16.8uHNRS5030T6R8MMGJ:NRS5030T6R8MMGJL1
174LVC1G07Package_TO_SOT_SMD:SOT-353_SC-70-5U3
1AP22653W6-7AP22653W6-7:SOT95P280X145-6NU9
1ARJM11D7-502-AB-EW2ARJM11D7-502-AB-EW2:ARJM11D7502ABEW2J6
1ComputeModule4-CM4CM4IO:Raspberry-Pi-4-Compute-ModuleCM4
1JST 2-PHJST_S2B-PH-K-S(LF)(SN):JST_S2B-PH-K-S(LF)(SN)B1
1MCP73871-2CCI_MLdigikey-footprints:QFN-20-1EP_4x4mm_RevAU2
1MMUN2133LT1GMMUN2133LT1G:SOT95P240X111-3NQ1
1Micro_SD_Card_DetCM4IO:SDCARD_MOLEX_503398-1892J5
1OrangeLED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolderD4
1PREC002SAAN-RCPREC002SAAN-RC:PREC002SAAN-RCJ2
1RT9742ENGJ5Package_TO_SOT_SMD:SOT-23-5U5
1RT9742VGJ5Package_TO_SOT_SMD:SOT-23-5U4
1SS-53000-001SS-53000-001:STEWART_SS-53000-001J3
1TPS61090RSARTPS61090RSAR:QFN65P400X400X100-17NU1
1USB2504A-JTUSB2504A-JT:USB2504A-JTU8
1USB4125-GF-A_REVA2USB4125-GF-A_REVA2:GCT_USB4125-GF-A_REVA2J1

Questions

How big is the Lathrum thesis PCB?

It measures 158.3 × 110 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Lathrum thesis use?

80 parts, built around the 74LVC1G07, MCP73871-2CCI/ML, RT9742ENGJ5 and RT9742VGJ5. 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 Lathrum thesis KiCad files?

From the Dylancyclone/thesis repository on GitHub, at the commit this page was made from: the board is kicad/lathrum_thesis/lathrum_thesis.kicad_pcb and its schematic kicad/lathrum_thesis/cm4.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Lathrum thesis design in my own project?

Its repository states no licence, so its author keeps all rights: ask Dylancyclone before reusing the design.

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