2 layers141.6 × 70 mm
4 layers69.5 × 60 mm
ECAD for SRAD Avionics hardware
- Size
- 69.5 × 60 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 151
- Nets
- 122
- Pads
- 478
- Tracks, vias
- 1,171, 204
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Sep 2026
- Updated
- 7 Nov 2026
Overview
Hydra is an open-source printed circuit board by Queens-Rocket-Engineering-Team, from the Queens-Rocket-Engineering-Team/av-hardware repository on GitHub. It is a 4-layer board of 69.5 × 60 mm with 151 parts on 122 nets, routed with 1,171 tracks and 204 vias.
It is built around the STM32F103CBT6, TCAN1051HGVDRQ1 and DMP4065S-7, with the AMS1117-3.3, BY25Q128ESWIG and AO3400A among its other parts. Its parts include 54 resistors, 41 capacitors, 13 diodes, 11 ICs and 10 connectors. It belongs with the STM32 boards of this library.
Main components
9
STM32F103CBT6
LQFP-48(7x7)-40℃~+85℃ 128KB 12bit 20KB 2V~3.6V 32 Bit 37 72MHz ARM Cortex-M3 Built-in FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
TCAN1051HGVDRQ1
SOIC-8-55℃~+125℃ 5Mbps 70mA CAN Transceiver TXD dominant timeout、ESD protection、Undervoltage Protection、Thermal shutdown protection、Bus fault protection、Silent mode、Integrated level shifting SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
DMP4065S-7
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 100mΩ@4.5V 12.2nC@10V 3.4A 40V 40pF 587pF 88pF SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsBY25Q128ESWIG
WSON8 6*5mmWSON86x5mm New Arrivals ROHSBOYAMICROUncategorisedAO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
BAV199DW
SOT-363-65℃~+150℃ 1.25V@150mA 160mA 2 Pair Series Connection 4A 5nA@75V 85V SOT-363 Diodes - General Purpose ROHSDiodes IncorporatedDiodes - General Purpose
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
X322516MMB4SI
SMD3225-4P-40℃~+85℃ 10pF 16MHz 50Ω Crystal Oscillator ±10ppm ±20ppm SMD3225-4P Crystals ROHSYXCCrystals
README
prop/LCMHydra/README.md[Board Name]
Overview
Brief description of the board, its purpose, and its role within the [System Name] system.
Electrical Characteristics
| Parameter | Value |
|---|
Specifications
MCU
- Part:
- Architecture:
- Clock:
- Memory:
Communications
Other/Peripherals
- Sensors:
- Storage:
- Connectors:
System Partitioning
Brief, abstract overviews of the different subsystems across the board. Think of the board as the main system.
- A subsytem could be the board's power, the controlling cirucit of a main peripheral, etc.
[Partition Name]
Description of the subsytem and its function.
[Partition Name]
Description of the substeym and its function.
...
Hardware
Major Hardware Components
- [Component]: Description ...
Major Circuits
[Circuit]
- Description, supporting calculations, snippet of circuit.
History
- Any relevant information on the board's histroy: issues, etc.
Status
Status: [Development / Review / Shipped / Assembly / Testing / Validated / ]
Revision: [Revision]
Changelog
[Revision]
- Description of change | Date
- Description of change | Date ...
QRET, 2026-2027
Parts
151| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 10k | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R8, R22, R25, R43, R48, R49, R50, R52, R54, R60 |
| 11 | 100nF | Capacitor_SMD:C_0603_1608Metric | C8, C9, C17, C18, C23, C30, C33, C39, C41, C45, C52 |
| 8 | 200 | Resistor_SMD:R_0603_1608Metric | R29, R34, R36, R38, R40, R41, R44, R53 |
| 7 | 1uF | Capacitor_SMD:C_0603_1608Metric | C5, C6, C28, C43, C44, C48, C49 |
| 4 | 10nF | Capacitor_SMD:C_0603_1608Metric | C26, C27, C34, C56 |
| 4 | 10uF | Capacitor_SMD:C_0603_1608Metric | C7, C12, C21, C50 |
| 4 | 1k | Resistor_SMD:R_0603_1608Metric | R24, R28, R33, R37 |
| 4 | 2.2k | Resistor_SMD:R_0402_1005Metric | R17, R18, R21, R45 |
| 4 | 6.2k | Resistor_SMD:R_0603_1608Metric | R3, R16, R23, R51 |
| 3 | 100k | Resistor_SMD:R_0603_1608Metric | R39, R42, R47 |
| 3 | 100uF | Capacitor_SMD:CP_Elec_6.3x5.9 | C3, C4, C46 |
| 3 | 12k | Resistor_SMD:R_0603_1608Metric | R2, R30, R31 |
| 3 | ID_LM66100DCKR | LM66100:SC-70-6 | U3, U4, U10 |
| 2 | 1.2k | Resistor_SMD:R_0603_1608Metric | R19, R20 |
| 2 | 100n | Capacitor_SMD:C_0402_1005Metric | C13, C14 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric | C15, C16 |
| 2 | 10p | Capacitor_SMD:C_0603_1608Metric | C10, C11 |
| 2 | 1M | Resistor_SMD:R_0603_1608Metric | R26, R27 |
| 2 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q3, Q5 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | 600R | Resistor_SMD:R_0603_1608Metric | FB1, FB2 |
| 2 | 62 | Resistor_SMD:R_0603_1608Metric | R32, R35 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | BAV199DW | Package_TO_SOT_SMD:SOT-363_SC-70-6 | D13, D18 |
| 2 | DMP4065S-7 | Package_TO_SOT_SMD:SOT-23 | U11, U12 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | PT | NANO-V-2-CONN:MOLEX_1053091102 | J6, J8 |
| 2 | SOL_CONN | NANO-V-2-CONN:MOLEX_1053091102 | J9, J10 |
| 2 | SS34 | Diode_SMD:D_SMA | D15, D16 |
| 1 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 10uF | Capacitor_SMD:CP_Elec_4x5.4 | C1 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C35 |
| 1 | 120 | Resistor_SMD:R_0603_1608Metric | R46 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C51 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C20 |
| 1 | 220 nF | Capacitor_SMD:C_0603_1608Metric | C29 |
| 1 | 22k | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 24V-TP | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | 270 | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 3.3k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 3V3-TP | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | 3V3_BP | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | 3V3_USB | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | 47k | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 5V-TP | TestPoint:TestPoint_Pad_D1.0mm | TP13 |
| 1 | 680 | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | ADC_ADS131M04IPWR | ADS131M04IPWR:SOP65P640X120-20N | U9 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | BY25Q128ES | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U6 |
| 1 | CAN_LED (WHT) | LED_SMD:LED_0603_1608Metric | D6 |
| 1 | CP2102N-Axx-xQFN20 | digikey-footprints:QFN-20-1EP_3x3mm | U8 |
| 1 | Conn_01x06 | CONN_SD-4:CONN_SD-105314-100_06_MOL | J1 |
| 1 | DB_LED (YLW) | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | Fuse | 0679L0250-05:FUSC6125X279N | F1 |
| 1 | GND-TP-H | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP3 |
| 1 | GND-TP-P | TestPoint:TestPoint_Pad_1.5x1.5mm | TP5 |
| 1 | HALL-1 | NANO-H-4-CONN:CONN_SD-105313-100_04_MOL | J4 |
| 1 | HALL-2 | NANO-H-4-CONN:CONN_SD-105313-100_04_MOL | J5 |
| 1 | PWR_24V_LED (GRN) | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | PWR_3V3_LED (GRN) | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | PWR_5V_LED (GRN) | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | SOL1_LED (YELW) | LED_SMD:LED_0603_1608Metric | D12 |
| 1 | SOL2_LED (YELW) | LED_SMD:LED_0603_1608Metric | D11 |
| 1 | STM32F103CBT6 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U5 |
| 1 | SWD_CONN | swd-conn:SWD_PinHeader_1x04_P2.54mm_Horizontal_SMD | J2 |
| 1 | SW_STM_BOOT_MODE | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | SW_STM_RESET | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | SYS_LED | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D7 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J7 |
| 1 | TCAN1051HGVDR | ul_ISO1044BDR:SOIC_1044BDR_TEX | U1 |
| 1 | Thermistor | Resistor_SMD:R_0603_1608Metric | TH1 |
| 1 | USB_C_CONN | USBC-CONN:USB_C_DB-108PWB | J3 |
| 1 | USB_LED (GRN) | LED_SMD:LED_0805_2012Metric | D4 |
| 1 | VSOL.S | TestPoint:TestPoint_Pad_1.5x1.5mm | TP7 |
| 1 | V_SWD_TP | TestPoint:TestPoint_Pad_D1.0mm | TP9 |
| 1 | X322516MMB4SI | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
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Questions
How big is the Hydra PCB?
It measures 69.5 × 60 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Hydra use?
151 parts, built around the STM32F103CBT6, TCAN1051HGVDRQ1, DMP4065S-7 and AMS1117-3.3. 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 Hydra KiCad files?
From the Queens-Rocket-Engineering-Team/av-hardware repository on GitHub, at the commit this page was made from: the board is prop/LCMHydra/hydra.kicad_pcb and its schematic libraries/prop/PT_module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hydra design in my own project?
Its repository states no licence, so its author keeps all rights: ask Queens-Rocket-Engineering-Team before reusing the design.