2 layers135.5 × 77 mm
Pcb final
asprgchong/HCI-Engineering-and-PCB
Project Files and Demo videos from my HCI PCB and HCI Eng classes with Professor Pedro Lopes
63 parts
2 layers46.3 × 75 mm
Finalpcb landreesen
LukeAndreesen/studyPCB1A Study Timer PCB Project - hold yourself accountable by setting the timer, attaching your phone to the detector, and sitting in front of the module. If you get up or move your phone before the timer's done, you'll deal with alarms & other consequences ...
- Size
- 46.3 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 76
- Nets
- 116
- Pads
- 316
- Tracks, vias
- 923, 139
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 May 2025
- Updated
- 29 May 2025
Overview
Finalpcb landreesen is an open-source printed circuit board by LukeAndreesen, from the LukeAndreesen/studyPCB repository on GitHub. It is a 2-layer board of 46.3 × 75 mm with 76 parts on 116 nets, routed with 923 tracks and 139 vias.
It is built around the ATSAMD21G18A-AU, VCNL3040 and 74HC595PW-Q100,118-JSM, with the TLV73333PQDBVRQ1, 10129379-905001BLF and PT01-B115D-B103 among its other parts. Its parts include 36 resistors, 13 capacitors, 6 ICs, 4 diodes and 3 connectors. It belongs with the SAM D and SAM boards of this library.
Main components
7
ATSAMD21G18A-AU
TQFP-48-40℃~+85℃ 1.62V~3.6V 10bit 12bit 256KB 32 Bit 32KB 38 48MHz ARM Cortex-M0+ Built-in FLASH 上电复位(POR)、欠压检测(BOR/LVD/LVR/LVI)、看门狗复位、内置通用定时器、硬件CRC、日历功能、触控功能 TQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
VCNL3040
SMD-8P-40℃~+85℃ 2.5V~3.6V SMD-8P Ambient Light Sensors ROHSVishay IntertechnologyAmbient Light Sensors
74HC595PW-Q100,118-JSM
TSSOP-16-40℃~+105℃ 108MHz 15ns@6V,50pF 2V~6V 35mA 500mW 74HC 8 Asynchronous clear function、Output enable Serial-to-Serial or Parallel Tri-State TSSOP-16 Shift Registers ROHSJSMSEMIShift Registers
TLV73333PQDBVRQ1
SOT-23-5-40℃~+150℃@(Tj) 1 120uVrms 125mV@(300mA) 3.3V 300mA 34uA 5.5V 50dB@(1kHz) Fixed Over Current Protection、Enable、Thermal Shutdown Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators10129379-905001BLF
弯插,P=2.54mm-55℃~+105℃ 1 110V 2.41mm 2.54mm 3.05mm 3A 5.84mm 5P Black Copper alloy Pin Header Right Angle 弯插,P=2.54mm Pin Headers ROHSAmphenolPin HeadersPT01-B115D-B103
插件Potentiometers & Variable ResistorsCUI
USB4105-GF-A
SMD-40℃~+85℃ 1 12P 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
README.md
This project is a study timer that is meant to enforce productivity; an onboard IR sensor, as well as a daughter-board hall-effect sensor module detect a user's presence and ensure their phone is sitting on the desk and not in their hands. 3 daisy-chaineed shift registers control the 7-segment displays, and a magnetic buzzer and onboard LED's provide feedback and alerts. The devce connects to the user's computer via USB for power and serial connectivity with the UI which can be interacted with using the board's buttons and potentiometer dial. This was my first independent PCB board, and I really enjoyed the process of designing, soldering, and programming it!
A Bill of Materials is available as CSV in this repo, along with KiCad schematics.
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 330 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25 +5 |
| 5 | 5.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5, R29, R30, R31 |
| 4 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4 |
| 4 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9, C12, C13, C14 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R32, R33, R36 |
| 3 | 157112V12700 | finalpcb:157112V12700 | DS1, DS2, DS3 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R6 |
| 3 | 74HC595PW-Q100,118 | finalpcb:SOP65P640X110-16N | IC2, IC3, IC4 |
| 3 | SW_Push | Button_Switch_SMD:SW_SPST_TL3305A | SW1, SW2, SW3 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7, C8 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C6 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R37, R38 |
| 2 | RED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2, D3 |
| 1 | 10129379-905001BLF | finalpcb:HDRRA5W67P0X254_1X5_1270X254X241P | J4 |
| 1 | 180 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 470nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10 |
| 1 | ATSAMD21G18A-A | Package_QFP:TQFP-48_7x7mm_P0.5mm | U1 |
| 1 | CMT-8504-03-SMT-TR | finalpcb:CMT850403SMTTR | LS3 |
| 1 | Crystal_Small | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | D | finalpcb:SOD2713X115N | D4 |
| 1 | FB-30R | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | GREEN | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | PT01-B115D-B103 | finalpcb:PT01B115DB103 | VR1 |
| 1 | Q_NPN_BCE | finalpcb:2SA1588GRLF | Q1 |
| 1 | SWD_TAG-CONNECT | Connector:Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J1 |
| 1 | TLV73333PQDBVRQ1 | hcipcb:SOT95P280X145-5N | U2 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | PA17 |
| 1 | USB4105-GF-A | hcipcb:GCT_USB4105-GF-A | J2 |
| 1 | VCNL3040 | finalpcb:SON108P200X400X115-8N | IC1 |
The 74 most common of 76 parts.
Questions
How big is the Finalpcb landreesen PCB?
It measures 46.3 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Finalpcb landreesen use?
76 parts, built around the ATSAMD21G18A-AU, VCNL3040, 74HC595PW-Q100,118-JSM and TLV73333PQDBVRQ1. 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 Finalpcb landreesen KiCad files?
From the LukeAndreesen/studyPCB repository on GitHub, at the commit this page was made from: the board is kicad/finalpcb_landreesen.kicad_pcb and its schematic kicad/finalpcb_landreesen.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Finalpcb landreesen design in my own project?
Its repository states no licence, so its author keeps all rights: ask LukeAndreesen before reusing the design.
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