4 layers70 × 70 mm
4 layers85 × 60 mm
- Size
- 85 × 60 mm
- Copper layers
- 4
- Thickness
- 4.69 mm
- Parts
- 131
- Nets
- 145
- Pads
- 569
- Tracks, vias
- 1,071, 213
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 11 Feb 2022
- Updated
- 6 Nov 2026
Overview
FC-32 is an open-source printed circuit board by sceric, from the sceric/ElectronicTheory repository on GitHub. It is a 4-layer board of 85 × 60 mm with 131 parts on 145 nets, routed with 1,071 tracks and 213 vias.
It is built around the CH330N, NRF24L01 and LMV321, with the PCA9685PW, W25Q256JVEIQ TR and MPU-9250 among its other parts. Its parts include 34 capacitors, 31 resistors, 14 diodes, 11 ICs and 5 connectors. It belongs with the STM32 boards of this library.
Main components
11
CH330N
SOP-8-20℃~+70℃ 15mA 2Mbps 3.3V、5V Transceiver SOP-8 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
NRF24L01
QFN-20-EP(4x4)-40℃~+85℃ -85dBm 0dBm 1.9V~3.6V 2.4GHz 2Mbps CRC check function、Automatic response function、Automatic retransmission function SPI QFN-20-EP(4x4) RF Transceiver ICs ROHSNordic SemiconRF Transceiver ICs
LMV321
SOT-23-5L-2.75V~-1.25V、1.25V~2.75V 0℃~+70℃ 1 10pA 10pA 1MHz 2.1V~5.5V 20mA 20nV/√Hz@10kHz 520V/ms 60uA 70dB 800uV Built-in compensation Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5L Operational Amplifier ROHSJiangsu Changjing Electronics Technology (CJ)Operational Amplifier
PCA9685PW
TSSOP-28-40℃~+85℃ 100kHz~1MHz 16 2.3V~5.5V 25mA 5.5V Built-in PWM TSSOP-28 LED Drivers ROHSNXP SemiconductorsLED Drivers
W25Q256JVEIQ TR
WSON-8-EP(6.1x8)WSON-8-EP(6.1x8) NOR FLASH ROHSWinbond ElecNOR FLASH
MPU-9250
QFN-24-EP(3x3)-40℃~+85℃ 2.4V~3.6V 8uA IMU (accelerometer + gyroscope) Motion event detection SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps QFN-24-EP(3x3) Accelerometers ROHSTDK InvenSenseAccelerometers
SHT31-DIS-F
DFN-8DFN-8 New Arrivals ROHSSensirionUncategorised
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
BC501SM
SMDSMD Button And Strip Battery Connector ROHSMPDButton And Strip Battery Connector
U.FL-R-SMT(10)
SMD-40℃~+90℃ 1 1.25mm 2mm 50Ω 6GHz Board Side IPEX Male Pin SMD Coaxial Connectors (RF) ROHSHirose ElectricCoaxial Connectors (RF)
README
Projects/Digital_Receiver/README.mdDigital_Receiver
Wireless receiver based on AS01-SPIPX (NRF)
Parts
131| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C10, C23, C24, C25, C26, C30, C31, C32, C39, C40, C41, C42, C43 +3 |
| 9 | 470R | Resistor_SMD:R_0603_1608Metric | R3, R4, R12, R29, R30, R31, R32, R33, R34 |
| 6 | 4.7k | Resistor_SMD:R_0603_1608Metric | R11, R15, R16, R17, R18, R19 |
| 6 | R | LED_SMD:LED_0603_1608Metric | D1, D2, D9, D12, D13, D14 |
| 6 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP4, TP5, TP6 |
| 5 | 1k | Resistor_SMD:R_0603_1608Metric | R5, R25, R26, R27, R28 |
| 5 | 22R | Resistor_SMD:R_0603_1608Metric | R20, R21, R22, R23, R24 |
| 4 | B | LED_SMD:LED_0603_1608Metric | D6, D8, D10, D11 |
| 4 | MountingHole | MountingHole:MountingHole_3mm_Pad_Via | H1, H2, H3, H4 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R9 |
| 3 | Conn_01x04 | Connector_Molex:Molex_CLIK-Mate_502494-0470_1x04-1MP_P2.00mm_Horizontal | SBUS1, ST-Link1, UART1 |
| 2 | 10nF | Capacitor_SMD:C_0603_1608Metric | C22, C28 |
| 2 | 16Mhz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1, Y2 |
| 2 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 20pF | Capacitor_SMD:C_0603_1608Metric | C11, C12 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric | C33, C34 |
| 2 | Conn_01x02 | Connector_Molex:Molex_CLIK-Mate_502494-0270_1x02-1MP_P2.00mm_Horizontal | J1, J6 |
| 2 | Conn_01x06 | Connector_Molex:Molex_CLIK-Mate_502494-0670_1x06-1MP_P2.00mm_Horizontal | ADC1, RCIN1 |
| 2 | D_Small | Diode_SMD:D_SMA | D5, D7 |
| 2 | Q_NPN_BEC | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | USB_B_Micro | Connector_USB:USB_Micro-B_Molex-105017-0001 | J4, J5 |
| 1 | 1.5pF | Capacitor_SMD:C_0603_1608Metric | C37 |
| 1 | 10R | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | 1pF | Capacitor_SMD:C_0603_1608Metric | C38 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C27 |
| 1 | 2.2nF | Capacitor_SMD:C_0603_1608Metric | C35 |
| 1 | 2.7nH | Inductor_SMD:L_0603_1608Metric | L5 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 27nH | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 3.9nH | Inductor_SMD:L_0603_1608Metric | L4 |
| 1 | 33nF | Capacitor_SMD:C_0603_1608Metric | C29 |
| 1 | 4.7pF | Capacitor_SMD:C_0603_1608Metric | C36 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 8.2nH | Inductor_SMD:L_0603_1608Metric | L3 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | BC501SM | Battery holder CR:BAT_BC501SM | BT1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | CH330N | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U12 |
| 1 | Conn_01x03 | myCustomLibs:ConPadx03 | I2C1 |
| 1 | Conn_01x03 | Connector_Molex:Molex_CLIK-Mate_502494-0370_1x03-1MP_P2.00mm_Horizontal | LED1 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | PWM_SIG1 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | SIG1 |
| 1 | Conn_02x04_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | PWM_POW1 |
| 1 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | POW1 |
| 1 | G | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | LMV321 | Package_TO_SOT_SMD:SOT-23-5 | U14 |
| 1 | LOGO | SFA_LOGO:BIT2BYTE_Small | G*** |
| 1 | LOGO | SFA_LOGO:axis_small | G*** |
| 1 | MPU-9250 | Sensor_Motion:InvenSense_QFN-24_3x3mm_P0.4mm | U5 |
| 1 | NEO-8Q | RF_GPS:ublox_NEO | U7 |
| 1 | NRF24L01 | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U8 |
| 1 | PCA9685PW | Package_SO:TSSOP-28_4.4x9.7mm_P0.65mm | U10 |
| 1 | PRESSURE-BMP180(LGA7) | PRESSURE-BMP180_LGA7_:LGA7-1.5-3.8X3.6MM | U6 |
| 1 | SHT31-DIS | Sensor_Humidity:Sensirion_DFN-8-1EP_2.5x2.5mm_P0.5mm_EP1.1x1.7mm | U13 |
| 1 | STM32F405RGTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | SWRA117D | RF_Antenna:Texas_SWRA117D_2.4GHz_Left | ANT1 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_TL3342 | Reset1 |
| 1 | SW_Push_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | BOOT1 |
| 1 | U.FL-R-SMT(10) | U:HRS_U.FL-R-SMT(10) | J2 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U11 |
| 1 | W25Q256JVEIQ_TR | W25Q256JVEIQ_TR:SON127P800X600X80-9N | U9 |
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Questions
How big is the FC-32 PCB?
It measures 85 × 60 mm and has 4 copper layers, 4.69 mm thick.
What parts does the FC-32 use?
131 parts, built around the CH330N, NRF24L01, LMV321 and PCA9685PW. 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 FC-32 KiCad files?
From the sceric/ElectronicTheory repository on GitHub, at the commit this page was made from: the board is Projects/FC32-Hardware/FC-32.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the FC-32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask sceric before reusing the design.