2 layers65 × 95 mm
Recirculation Aparatus PCB V4
kcsmith-uiuc/TubePinchValve
Software and Build Files for the Smith Lab @ UIUC's Low-Volume, Fluid-Switching Device
10 parts
4 layers
LightProcessor preFreeRoute
K0iNguyen/LightProcessorPCB code and design for Optical chemical potential mapping research at Zeng Lab, Purdue University.
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 131
- Nets
- 153
- Pads
- 545
- Tracks, vias
- 650, 8
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 May 2025
- Updated
- 3 Oct 2025
Overview
LightProcessor preFreeRoute is an open-source printed circuit board by K0iNguyen, from the K0iNguyen/LightProcessor repository on GitHub. It is a 4-layer board with 131 parts on 153 nets, routed with 650 tracks and 8 vias.
It is built around the STM32G474RET6, LM324 and SN74HC4066N, with the AP2112K-3.3, STLINK-V3MODS and PJ-202B among its other parts. Its parts include 56 resistors, 27 diodes, 17 capacitors, 13 ICs and 5 switches. It belongs with the STM32 boards of this library.
Main components
6
STM32G474RET6
LQFP-64(10x10)-40℃~+85℃ 1.71V~3.6V 128KB 12bit 12bit 170MHz 32 Bit 512KB 52 ARM Cortex-M4F Built-in FLASH LQFP-64(10x10) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
LM324
SOP-14-1.5V~10V 0℃~+70℃ 24V 250nA 3V~20V 4 40mA 50nA 700uA 7mV 80dB SOP-14 Operational Amplifier ROHSHXY MOSFETOperational Amplifier
SN74HC4066N
PDIP-14-40℃~+85℃ 13ns 18ns 1:1 22ns 2V~6V 30MHz 4 50Ω PDIP-14 Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorisedSTLINK-V3MODS
SMD,30x15mmSMD,30x15mm Programmers, Emulators, and Debuggers ROHSSTMicroelectronicsProgrammers, Emulators, And DebuggersPJ-202B
--25℃~+85℃ 2.5A 2.5mm 24V 6.5mm - DC Power Connectors ROHSCUIDC Power Connectors
README
README.mdPCB program and design for Optical chemical potential mapping processor at Zeng Lab, Purdue University.
Parts
131| Qty | Value | Footprint | References |
|---|---|---|---|
| 31 | 100K | Resistor_SMD:R_0805_2012Metric | R53, R54, R55, R56, R57, R58, R59, R60, R68, R69, R70, R71, R72, R73, R74, R75 +15 |
| 17 | LED | LED_SMD:LED_0805_2012Metric | D22, D30, D31, D32, D33, D35, D36, D37, D38, D40, D41, D42, D43, D45, D46, D47 +1 |
| 8 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C4, C6, C8, C11, C15, C21, C22 |
| 8 | 330K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R2, R4, R10, R12, R18, R20, R26, R28 |
| 6 | LM324 | LM324N_NOPB:DIP825W47P254L1917H533Q14 | U2, U4, U6, U7, U8, U9 |
| 5 | Conn_Coaxial | 5415025-2:CONN BNC JACK RA 50 OHM PCB | ADC1, ADC2, ADC3, ADC4, DAC1 |
| 5 | RED | LED_SMD:LED_0805_2012Metric | D23, D29, D34, D39, D44 |
| 4 | 110K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R6, R14, R22, R30 |
| 4 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R3, R11, R19, R27 |
| 4 | 250K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R5, R13, R21, R29 |
| 4 | 4.7u | Capacitor_SMD:C_0805_2012Metric | C1, C3, C5, C7 |
| 4 | 500K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R1, R9, R17, R25 |
| 4 | D | Diode_SMD:D_0805_2012Metric | D2, D3, D4, D5 |
| 4 | MountingHole | MountingHole:MountingHole_2.5mm | H1, H2, H3, H4 |
| 4 | SN74HC4066N | SN74HC4066N:N14 | U10, U11, U12, U13 |
| 4 | SW_SP5T_NR01105 | Button_Switch_THT:SW_NKK_NR01 | SW7, SW8, SW9, SW11 |
| 2 | 12p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17, C20 |
| 2 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C18, C19 |
| 1 | 0 | Resistor_SMD:R_0805_2012Metric | R91 |
| 1 | 0.1 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C16 |
| 1 | 16MHz | Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | FerriteBead | Capacitor_SMD:C_0805_2012Metric | FB1 |
| 1 | GREEN | LED_SMD:LED_0805_2012Metric | D49 |
| 1 | PJ-202B | PJ_202B:CUI_PJ-202B | J2 |
| 1 | STLINK-V3MODS | ST-Link_V3:STLink_V3MODS | U1 |
| 1 | STM32G474RET6 | STM32G474RET6:QFP50P1200X1200X160-64N | IC1 |
| 1 | Tactile_6mm | Button_Switch_THT:SW_PUSH_6mm | SW10 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_Amphenol_124019772112A | J1 |
Questions
What parts does the LightProcessor preFreeRoute use?
131 parts, built around the STM32G474RET6, LM324, SN74HC4066N and AP2112K-3.3. 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 LightProcessor preFreeRoute KiCad files?
From the K0iNguyen/LightProcessor repository on GitHub, at the commit this page was made from: the board is LightProcessorPCB/LightProcessor_preFreeRoute.kicad_pcb and its schematic LightProcessorPCB/LightProcessor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LightProcessor preFreeRoute design in my own project?
Its repository states no licence, so its author keeps all rights: ask K0iNguyen before reusing the design.
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