2 layers70 × 100 mm
2 layers85 × 51 mm
- Size
- 85 × 51 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 86
- Nets
- 70
- Pads
- 405
- Tracks, vias
- 576, 99
- Pours
- 17
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Dec 2025
- Updated
- 19 Jan 2026
Overview
Proto1 is an open-source printed circuit board by botagar, from the botagar/CC11-PCB-Badge-Prototype repository on GitHub. It is a 2-layer board of 85 × 51 mm with 86 parts on 70 nets, routed with 576 tracks and 99 vias.
It is built around the LM321, AP2112K-3.3 and USBLC6-2P6, with the 12402012E212A, BAV99 and DMMT5401 among its other parts. Its parts include 26 resistors, 18 capacitors, 11 connectors, 5 ICs and 5 diodes. It belongs with the STM32 boards of this library.
Main components
7
LM321
SOT-23-50℃~+70℃ 1 2mV 3nA 400V/ms 40mA 430uA 45nA 90dB SOT-23-5 Operational Amplifier ROHSPJSEMIOperational AmplifierAP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
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)12402012E212A
SMD1 5A Female Type-C USB 2.0 SMD USB Connectors ROHSAmphenolUSB Connectors
BAV99
SOT-231 Pair Series Connection 1.25V@150mA 100V 215mA 250mW 4A 4ns 500nA@80V SOT-23 Switching Diodes ROHSNexperiaSwitching Diodes
DMMT5401
SOT-26(SC74R)-55℃~+150℃ 150V 2 PNP 200mA 200mV 300MHz 300mW 50uA 5V 60 PNP SOT-26(SC74R) Bipolar (BJT) ROHSDiodes IncorporatedBipolar (BJT)DO2301E-Q
SOT-23-55℃~+150℃ 1 P-Channel 125mΩ@4.5V 150pF 1V 2.1nC@4.5V 20V 24pF 2A 34pF 800mW P-Channel SOT-23 MOSFETs ROHSDOINGTERMOSFETs
Parts
86| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R5, R6, R12, R16, R25 |
| 6 | PA_L | Connector_PinSocket_1.27mm:PinSocket_1x08_P1.27mm_Vertical_SMD_Pin1Left | J12, J14, J15, J16, J17, J18 |
| 5 | 100k | Resistor_SMD:R_0402_1005Metric | R1, R7, R10, R13, R17 |
| 4 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C6, C11, C18, C19 |
| 4 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C4, C20 |
| 3 | 4.7k | Resistor_SMD:R_0402_1005Metric | R8, R9, R21 |
| 3 | 5.1k | Resistor_SMD:R_0402_1005Metric | R2, R3, R15 |
| 2 | 100nF | Capacitor_SMD:C_0402_1005Metric | C3, C12 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R11, R20 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R22, R23 |
| 2 | 22pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C13, C14 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D2, D5 |
| 1 | 100R | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 100Ω | Resistor_SMD:R_0402_1005Metric | R19 |
| 1 | 12402012E212A | 12402012E212A:AMPHENOL_12402012E212A | J1 |
| 1 | 1V6 | TestPoint:TestPoint_Pad_1.0x1.0mm | TP2 |
| 1 | 1nF | Capacitor_SMD:C_0402_1005Metric | C7 |
| 1 | 220nF | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | 32.768KHz 12.5pF 70kΩ | Crystal:Crystal_SMD_EuroQuartz_EQ161-2Pin_3.2x1.5mm | Y2 |
| 1 | 3SM222FMB1VA | 3SM222FMB1VA:_1 | MK1 |
| 1 | 3V3 | TestPoint:TestPoint_Pad_1.0x1.0mm | TP3 |
| 1 | 4k | Resistor_SMD:R_0402_1005Metric | R24 |
| 1 | 68k | Resistor_SMD:R_0402_1005Metric | R18 |
| 1 | 820pF | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 8Mz CL=20pF | Yajingxin:TX32258M4LBDE2T | XTAL1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | BAV99 | Package_TO_SOT_SMD:SOT-23 | D3 |
| 1 | BOOT | HanElectricity:TS110926045 | SW3 |
| 1 | Battery | battery:BatteryHolder_Keystone_2468_2xAAA | BT1 |
| 1 | Conn_01x02 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J13 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | D | Diode_SMD:D_0402_1005Metric | D1 |
| 1 | DMMT5401 | Package_TO_SOT_SMD:SOT-23-6 | Q2 |
| 1 | DO2301E-Q | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | D_TVS | KUU:SOD-882 | D4 |
| 1 | GND | TestPoint:TestPoint_Pad_1.0x1.0mm | TP1 |
| 1 | H_DRIVE | TestPoint:TestPoint_Pad_D1.5mm | TP15 |
| 1 | H_SENSE | TestPoint:TestPoint_Pad_D1.5mm | TP14 |
| 1 | LCD | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical_SMD_Pin1Left | J3 |
| 1 | LM321 | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | LOGO | Graphics:crikeycon11_dice | G*** |
| 1 | LOGO | Graphics:gh_logo_cat | G*** |
| 1 | MCP6002-xMS | Package_SO:SOP-8_3.76x4.96mm_P1.27mm | U4 |
| 1 | RESET | HanElectricity:TS110926045 | SW1 |
| 1 | R_Photo | JCHL:SMD_3.6x2.4mm | R26 |
| 1 | STM32G0B1CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | SW_SPDT | Shou_Han:SK12D07VG3 | SW2 |
| 1 | TC2030 | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J11 |
| 1 | Thermistor_NTC | Resistor_SMD:R_0603_1608Metric | TH1 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U5 |
| 1 | USR1 | HanElectricity:TS110926045 | SW4 |
| 1 | USR2 | HanElectricity:TS110926045 | SW5 |
| 1 | VBatt | TestPoint:TestPoint_Pad_1.0x1.0mm | TP4 |
| 1 | ~ | antenna:capacitive_coupled_50mmx8mm | AE1 |
| 1 | ~ | humidity_sensors:single_layer_comb_34T | C17 |
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Questions
How big is the Proto1 PCB?
It measures 85 × 51 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Proto1 use?
86 parts, built around the LM321, AP2112K-3.3, USBLC6-2P6 and 12402012E212A. 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 Proto1 KiCad files?
From the botagar/CC11-PCB-Badge-Prototype repository on GitHub, at the commit this page was made from: the board is proto1.kicad_pcb and its schematic mic.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Proto1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask botagar before reusing the design.