# ESP32-C3 Mini Drone FC ## Description Compact 40 mm × 40 mm ESP32-C3 mini drone flight controller with BMI270 IMU, 1S LiPo buck-boost 3.3 V power, motor PWM outputs, GPS/programming connectors, and 4-layer PCB constraints. ## Project Details - **Owner:** geeta00 - **Created:** 6/1/2026 - **Last Updated:** 6/1/2026 - **Visibility:** Public - **Connectivity:** WiFi/BLE via ESP32-C3 module; UART GPS expansion; UART programming connector; I2C IMU - **Domain:** Mini drone flight controller - **Operating Voltage:** 1S LiPo input, regulated 3.3 V system rail - **Implementation Details:** 40 mm x 40 mm, 4-layer PCB, ESP32-C3-MINI-1U-N4, BMI270 IMU, TPS63001 buck-boost regulator ## Key Components ### D1 — [TZ-P2-0402YGTIA1-0.45T](https://www.flux.ai/lcsc/tz-p2-0402ygtia1-0p45t~p0c.md) - Manufacturer Name: TUOZHAN(拓展光电) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2006241134_TUOZHAN-TZ-P2-0402YGTIA1-0-45T_C688878.pdf - Product Info Url: https://lcsc.com/product-detail/Light-Emitting-Diodes-LED_TUOZHAN-TZ-P2-0402YGTIA1-0-45T_C688878.html - Manufacturer Part Number: TZ-P2-0402YGTIA1-0.45T - Package or Case Code: LED0402-RD_GREEN - LCSC Part Number: C688878 - JLCPCB Part Class: Extended Part - Part Type: Light Emitting Diodes (LED) **Pins:** - 1 [pin 1] - 2 [pin 2] ### D2 — [NRVB130T1G](https://www.flux.ai/lcsc/nrvb130t1g~q43l.md) - JLCPCB Part Class: Extended Part - Package or Case Code: SOD-123_L2.7-W1.6-LS3.7-RD-1 - Forward Voltage: 0.45V - Manufacturer Part Number: NRVB130T1G - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010333_onsemi-NRVB130T1G_C223580.pdf - Reverse Voltage: 30V - Manufacturer Name: onsemi(安森美) - Part Type: Schottky Barrier Diodes (SBD) - Role: Reverse Polarity Protection - Role Details: USB VBUS-to-VSYS Schottky ORing diode; pin 2 anode to USB_VBUS_PROT, pin 1 cathode to VSYS. - LCSC Part Number: C223580 - Diode Type: Schottky Diode - Product Info Url: https://lcsc.com/product-detail/Schottky-Barrier-Diodes-SBD_ON-Semicon_NRVB130T1G_ON-Semicon-ON-NRVB130T1G_C223580.html **Pins:** - 1 [pin 1] - 2 [pin 2] ### D3 — [NRVB130T1G](https://www.flux.ai/lcsc/nrvb130t1g~q43l.md) - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Name: onsemi(安森美) - Role Details: LiPo BAT_RAW-to-VSYS Schottky ORing diode; pin 2 anode to BAT_RAW, pin 1 cathode to VSYS. - Reverse Voltage: 30V - Product Info Url: https://lcsc.com/product-detail/Schottky-Barrier-Diodes-SBD_ON-Semicon_NRVB130T1G_ON-Semicon-ON-NRVB130T1G_C223580.html - Diode Type: Schottky Diode - LCSC Part Number: C223580 - Forward Voltage: 0.45V - JLCPCB Part Class: Extended Part - Package or Case Code: SOD-123_L2.7-W1.6-LS3.7-RD-1 - Role: Reverse Polarity Protection - Manufacturer Part Number: NRVB130T1G - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010333_onsemi-NRVB130T1G_C223580.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### F1 — [0603L050YR](https://www.flux.ai/lcsc/0603l050yr~ua87.md) - Manufacturer Part Number: 0603L050YR - Manufacturer Name: Littelfuse Inc. - Product Info Url: https://lcsc.com/product-detail/Surface-Mount-Fuses_Littelfuse_0603L050YR_Littelfuse-0603L050YR_C207015.html - JLCPCB Part Class: Extended Part - Role Details: USB VBUS 500 mA resettable fuse before ORing diode. - Package or Case Code: F0603 - LCSC Part Number: C207015 - Datasheet URL: https://www.littelfuse.com/assetdocs/resettable-ptcs-0603l-datasheet?assetguid=879563f9-97a7-4e71-adba-37de085b333f - Role: Protection - Part Type: Resettable Fuses - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — [S2B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-sm4-tblfsn~b96.md) - Manufacturer Name: JST Sales America Inc. - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: S2B-PH-SM4-TB(LF)(SN) **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — [SM04B-SRSS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm04b-srss-tblfsn~a667.md) - Package or Case Code: CONN-SMD_4P-P1.00_SM04B-SRSS-TB-LF-SN - Manufacturer Name: JST - Product Info Url: https://lcsc.com/product-detail/Others_JST-Sales-America__JST-Sales-America-SM04B-SRSS-TB-LF-SN_C160404.html - Part Type: Wire To Board / Wire To Wire Connector - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM04B-SRSS-TB-LF-SN_C160404.pdf - LCSC Part Number: C160404 - Manufacturer Part Number: SM04B-SRSS-TB(LF)(SN) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### J3 — [SM04B-SRSS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm04b-srss-tblfsn~a667.md) - Package or Case Code: CONN-SMD_4P-P1.00_SM04B-SRSS-TB-LF-SN - Manufacturer Name: JST - JLCPCB Part Class: Extended Part - Part Type: Wire To Board / Wire To Wire Connector - Product Info Url: https://lcsc.com/product-detail/Others_JST-Sales-America__JST-Sales-America-SM04B-SRSS-TB-LF-SN_C160404.html - Manufacturer Part Number: SM04B-SRSS-TB(LF)(SN) - LCSC Part Number: C160404 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM04B-SRSS-TB-LF-SN_C160404.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### J4 — [SM04B-SRSS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm04b-srss-tblfsn~a667.md) - Package or Case Code: CONN-SMD_4P-P1.00_SM04B-SRSS-TB-LF-SN - Manufacturer Name: JST - JLCPCB Part Class: Extended Part - Part Type: Wire To Board / Wire To Wire Connector - Product Info Url: https://lcsc.com/product-detail/Others_JST-Sales-America__JST-Sales-America-SM04B-SRSS-TB-LF-SN_C160404.html - Manufacturer Part Number: SM04B-SRSS-TB(LF)(SN) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM04B-SRSS-TB-LF-SN_C160404.pdf - LCSC Part Number: C160404 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### J5 — [USB4520-03-0-A](https://www.flux.ai/adrian95/usb4520-03-0-a~ufd.md) - Datasheet URL: https://gct.co/files/specs/usb4520-spec.pdf - Role: Connectivity - Manufacturer Part Number: USB4520-03-0-A - Manufacturer Name: GCT - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: USB-C 2.0 sink connector for native ESP32-C3 USB Serial/JTAG and protected bench power input. - Part Type: Connector **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND_A [pin A1] - GND_A [pin B12] - GND_B [pin B1] - GND_B [pin A12] - MH1 [pin S1] - MH2 [pin S4] - MH3 [pin S3] - MH4 [pin S2] - SBU1 [pin A8] - SBU2 [pin B8] - VBUS_A [pin A4] - VBUS_A [pin B9] - VBUS_B [pin B4] - VBUS_B [pin A9] ### SW1 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - LCSC Part Number: C720477 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Part Type: Tactile Switches - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TS-1088-AR02016 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Manufacturer Name: XUNPU(讯普) **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - LCSC Part Number: C720477 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Part Type: Tactile Switches - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TS-1088-AR02016 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Manufacturer Name: XUNPU(讯普) **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [ESP32-C3-MINI-1U-N4](https://www.flux.ai/lcsc/esp32-c3-mini-1u-n4~dj88.md) - JLCPCB Part Class: Extended Part - Package or Case Code: WIFIM-SMD_61P-L13.2-W12.5-P0.80 - Manufacturer Part Number: ESP32-C3-MINI-1U-N4 - Role: Power Conversion - Manufacturer Name: Espressif Systems - Role Details: Main MCU/radio module; antenna must be placed at board edge with all-layer copper keepout. - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf - LCSC Part Number: C2911374 **Pins:** - 3V3 [pin 3] - EN [pin 8] - GND [pin 37] - GND [pin 46] - GND [pin 41] - GND [pin 39] - GND [pin 42] - GND [pin 36] - GND [pin 45] - GND [pin 55] - GND [pin 1] - GND [pin 53] - GND [pin 48] - GND [pin 47] - GND [pin 58] - GND [pin 60] - GND [pin 52] - GND [pin 50] - GND [pin 14] - GND [pin 54] - GND [pin 11] - GND [pin 44] - GND [pin 43] - GND [pin 59] - GND [pin 51] - GND [pin 49] - GND [pin 38] - GND [pin 2] - GND [pin 40] - GND [pin 56] - GND [pin 57] - GND [pin 61] - IO0 [pin 12] - IO1 [pin 13] - IO10 [pin 16] - IO18 [pin 26] - IO19 [pin 27] - IO2 [pin 5] - IO3 [pin 6] - IO4 [pin 18] - IO5 [pin 19] - IO6 [pin 20] - IO7 [pin 21] - IO8 [pin 22] - IO9 [pin 23] - NC [pin 35] - NC [pin 32] - NC [pin 25] - NC [pin 29] - NC [pin 34] - NC [pin 9] - NC [pin 7] - NC [pin 28] - NC [pin 4] - NC [pin 10] - NC [pin 15] - NC [pin 33] - NC [pin 24] - NC [pin 17] - RXD0 [pin 30] - TXD0 [pin 31] ### U2 — [BMI270](https://www.flux.ai/jecstronic/bmi270~0q9.md) - Manufacturer Name: Bosch Sensortec - Part Type: Sensor - Role Details: Board-center IMU for drone attitude sensing over I2C. - Datasheet URL: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmi270-ds000.pdf - Role: Sensing (Shunt) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BMI270 **Pins:** - ASCX [pin 3] - ASDX [pin 2] - CSB [pin 12] - GND [pin 7] - GNDIO [pin 6] - INT1 [pin 4] - INT2 [pin 9] - OSCB [pin 10] - OSDO [pin 11] - SCX [pin 13] - SDO [pin 1] - SDX [pin 14] - VDD [pin 8] - VDDIO [pin 5] ### U3 — [TPS63001DRCRG4](https://www.flux.ai/lcsc/tps63001drcrg4~0pwt.md) - LCSC Part Number: C2072508 - Manufacturer Part Number: TPS63001DRCRG4 - Part Type: DC-DC Converters - Package or Case Code: VSON-10_L3.0-W3.0-P0.50-TL-EP - Role: Power Conversion - Role Details: Converts diode-ORed VSYS to regulated 3.3 V rail; correct production VSON-10 exposed-pad footprint. - JLCPCB Part Class: Extended Part - Manufacturer Name: TI(德州仪器) **Pins:** - EN [pin 6] - EP [pin 11] - FB [pin 10] - GND [pin 9] - L1 [pin 4] - L2 [pin 2] - PGND [pin 3] - PS/SYNC [pin 7] - VIN [pin 5] - VINA [pin 8] - VOUT [pin 1] ### U4 — [USBLC6-2SC6](https://www.flux.ai/lcsc/usblc6-2sc6~2e9x.md) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: USBLC6-2SC6 - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL - Operating Temperature: -55°C ~ 125°C (TJ) - Part Type: ESD Protection Devices - Role: Protection - Role Details: Low-capacitance ESD array for USB_DP and USB_DN placed at USB-C connector. - Maximum Clamping Voltage: 17V - Breakdown Voltage: 6V - Power: 150W - Manufacturer Name: UMW(友台半导体) - Symbol Style: parametric-v1 - LCSC Part Number: C2687116 - Peak Pulse Current: 5A - Datasheet URL: https://www.lcsc.com/datasheet/C2687116.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNRTlhdUVdURFlXXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D **Pins:** - GND [pin 2] - I/O1 [pin 1] - I/O1 [pin 6] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/geeta00/esp32-c3-mini-drone-fc~s0](https://www.flux.ai/geeta00/esp32-c3-mini-drone-fc~s0).* --- *Generated from [https://www.flux.ai/geeta00/esp32-c3-mini-drone-fc~s0](https://www.flux.ai/geeta00/esp32-c3-mini-drone-fc~s0)*