2 layers68 × 66 mm
2 layers
Breakout V1 Before madness
Cesium-Lab/body1PCBs
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 131
- Nets
- 213
- Pads
- 616
- Tracks, vias
- 356, 36
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Aug 2025
- Updated
- 20 Apr 2026
Overview
Breakout V1 Before madness is an open-source printed circuit board by Cesium-Lab, from the Cesium-Lab/body repository on GitHub. It is a 2-layer board with 131 parts on 213 nets, routed with 356 tracks and 36 vias.
It is built around the LAN8742A-CZ, USBLC6-2P6 and ADXL375BCCZ-RL7, with the AMS1117-1.8, DS3232MZ+ and ESDALC6V1-1U2 among its other parts. Its parts include 40 capacitors, 31 resistors, 17 ICs, 14 connectors and 8 diodes. It belongs with the interfaces and adapters boards and the STM32 boards of this library.
Main components
10
LAN8742A-CZ
QFN-24-EP(4x4)0℃~+70℃ 1.8V~3.3V 10BASE-T、100BASE-TX 10Mbit/s、100Mbit/s Ethernet Transceiver RMII QFN-24-EP(4x4) Ethernet Transceivers ROHSMicrochip TechnologyEthernet Transceivers
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
ADXL375BCCZ-RL7
LGA-14(3x5)-40℃~+85℃ 100nA 16bit 2V~3.6V Accelerometer SPI、I2C X,Y,Z ±200g LGA-14(3x5) Accelerometers ROHSAnalog DevicesAccelerometers
AMS1117-1.8
SOT-223-40℃~+125℃@(Tj) 0.003%Vout 1 1.3V@(1A) 1.8V 15V 1A 72dB@(120Hz) Fixed Positive Short Circuit Protection、Thermal shutdown SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
DS3232MZ+
SO-8-40℃~+85℃ 100nA 125uA 2.3V~4.5V Built-in I2C Temperature compensation、Backup power management and battery charging、InsideSRAM/NVRAM、Alarm function、Periodic interrupt output Yes SO-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
ESDALC6V1-1U2
0201-40℃~+125℃ 1 100nA 12pF 20W@8/20us 2A@8/20us 3V 6.1V 8V ESD IEC 61000-4-2 Unidirectional 0201 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
H1102NL
SMD-16PXFMR-SMD New Arrivals ROHSPulse ElecUncategorised
ICM-20948
QFN-24(3x3)-40℃~+85℃ 0.5KB 1.71V~3.6V 16bit 8uA Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps QFN-24(3x3) Accelerometers ROHSTDK InvenSenseAccelerometers
BLM21PG221SH1
08051 220Ω@100MHz 2A 45mΩ ±25% 0805 Ferrite Beads ROHSMurataFerrite BeadsCRJ061-L1-TH
插件0℃~+70℃ 1 Gold Harpoon Contact (Plastic) Phosphor bronze RJ45 Jack Shielded Through Hole With LED Plugin Ethernet Connectors / Modular Connectors (RJ45 RJ11) ROHSCUIEthernet Connectors / Modular Connectors (RJ45 RJ11)
README
README.mdbody
Hardware
Parts
131| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C5, C6, C7, C8, C10, C11, C12, C13, C14, C15, C23, C24 |
| 7 | 100nF | Capacitor_SMD:C_0603_1608Metric | C26, C31, C34, C35, C37, C38, C39 |
| 7 | 10uF | Capacitor_SMD:C_0603_1608Metric | C16, C17, C18, C19, C20, C25, C36 |
| 6 | 10K | Resistor_SMD:R_0603_1608Metric | R12, R14, R15, R16, R17, R30 |
| 5 | D | Diode_SMD:D_0603_1608Metric | D1, D5, D6, D7, D8 |
| 4 | 33R | Resistor_SMD:R_0603_1608Metric | R18, R19, R20, R22 |
| 4 | 49.9R | Resistor_SMD:R_0603_1608Metric | R23, R24, R25, R26 |
| 4 | SW_Push | Button_Switch_SMD:SW_SPST_EVPBF | SW1, SW2, SW3, SW4 |
| 4 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP1, JP2, JP3, JP4 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R5, R6, R9 |
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C4, C9, C33 |
| 3 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1, J7, J8 |
| 3 | Conn_01x06_Socket | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J10, J11, J13 |
| 3 | GREEN | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2, D3, D4 |
| 2 | 100kR | Resistor_SMD:R_0603_1608Metric | R10, R11 |
| 2 | 200m | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | 270R | Resistor_SMD:R_0603_1608Metric | R29, R31 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | 5.6pF | Capacitor_SMD:C_0603_1608Metric | C29, C30 |
| 2 | 5.6uF | Capacitor_SMD:C_0603_1608Metric | C27, C28 |
| 2 | 75R | Resistor_SMD:R_0603_1608Metric | R27, R28 |
| 2 | Conn_01x03_Socket | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J9, J12 |
| 2 | INA233 | Package_SO:VSSOP-10_3x3mm_P0.5mm | U9, U13 |
| 2 | MS5607-02BA | Package_LGA:LGA-8_3x5mm_P1.25mm | U6, U7 |
| 2 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U8, U16 |
| 1 | 120 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 12K1 | Resistor_SMD:R_0603_1608Metric | R21 |
| 1 | 1K5 | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 1V8 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP4 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C40 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 22uF | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 3V3 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP2 |
| 1 | 470pF | Capacitor_SMD:C_0603_1608Metric | C32 |
| 1 | 47uF | Capacitor_SMD:C_0603_1608Metric | C22 |
| 1 | 5V | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | 5V1 |
| 1 | 5V/3A | Fuse:Fuse_0603_1608Metric | F1 |
| 1 | 600R@100MHz | Capacitor_SMD:C_0603_1608Metric | L1 |
| 1 | ADXL375BCCZ-RL7 | Package_LGA:LGA-14_3x5mm_P0.8mm_LayoutBorder1x6y | U3 |
| 1 | AMS1117-1.8 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U12 |
| 1 | BAT-HLD-012-THM | Battery:BatteryHolder_LINX_BAT-HLD-012-SMT | BT1 |
| 1 | BLM21PG221 | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 1 | CRJ061-L1-TH | Connector_RJ:CUI_CRJ061-L1-TH | J14 |
| 1 | Conn_01x02 | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J6 |
| 1 | Conn_01x02_Socket | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_01x05_Socket | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | DS3232M | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | ESDALC6V1-1U2 | Diode_SMD:D_SOD-523 | U23 |
| 1 | H1102NL | Transformer_SMD:Transformer_Pulse_H1100NL | U15 |
| 1 | ICM-20948 | Sensor_Motion:InvenSense_QFN-24_3x3mm_P0.4mm | U2 |
| 1 | LAN8742A | Package_DFN_QFN:VQFN-24-1EP_4x4mm_P0.5mm_EP2.5x2.5mm_ThermalVias | U14 |
| 1 | LM1085-3.3 | Package_TO_SOT_SMD:TO-263-3_TabPin2 | U10 |
| 1 | LM1085-5.0 | Package_TO_SOT_SMD:TO-263-3_TabPin2 | U11 |
| 1 | MCP2542FDxMF | Package_DFN_QFN:DFN-8-1EP_3x3mm_P0.65mm_EP1.55x2.4mm | U4 |
| 1 | NX2016SA 25MHz | Crystal:Crystal_SMD_1210-4Pin_1.2x1.0mm | Y3 |
| 1 | NX3215SA 32.768kHz | Inductor_SMD:L_1206_3216Metric | Y1 |
| 1 | Polyfuse | Fuse:Fuse_1206_3216Metric | F2 |
| 1 | STM32H743ZITx | Package_QFP:LQFP-144_20x20mm_P0.5mm | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J4 |
| 1 | V_BATT | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP3 |
| 1 | V_BUS | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP1 |
| 1 | V_USB | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP5 |
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Questions
What parts does the Breakout V1 Before madness use?
131 parts, built around the LAN8742A-CZ, USBLC6-2P6, ADXL375BCCZ-RL7 and AMS1117-1.8. 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 Breakout V1 Before madness KiCad files?
From the Cesium-Lab/body repository on GitHub, at the commit this page was made from: the board is Breakouts/Breakout V1/Breakout V1 Before madness.kicad_pcb and its schematic Beacon/Beacon.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Breakout V1 Before madness design in my own project?
Its repository states no licence, so its author keeps all rights: ask Cesium-Lab before reusing the design.