2 layers60 × 35 mm
4 layers100 × 67.8 mm
Alarmbot
benthacher/alarmbotAlarmbot pcb and firmware (and rpi cm5 software)
- Size
- 100 × 67.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 227
- Nets
- 335
- Pads
- 1,032
- Tracks, vias
- 1,728, 464
- Pours
- 797
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Mar 2025
- Updated
- 28 Apr 2025
Overview
Alarmbot is an open-source printed circuit board by benthacher, from the benthacher/alarmbot repository on GitHub. It is a 4-layer board of 100 × 67.8 mm with 227 parts on 335 nets, routed with 1,728 tracks and 464 vias.
It is built around the 74LVC1G07SE-7-MS, ICM-20948 and PCA9306DC1, with the CU01SAH0S00, SI-60062-F and SMBJ24A among its other parts. Its parts include 109 capacitors, 56 resistors, 21 ICs, 18 connectors and 7 inductors. It belongs with the STM32 and Raspberry Pi (Linux) boards of this library.
Main components
6
74LVC1G07SE-7-MS
SC-70-5SC-70-5 Buffers, Drivers, Receivers, Transceivers ROHSMSKSEMIBuffers, Drivers, Receivers, Transceivers
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
PCA9306DC1
VSSOP-8-0.5mm-40℃~+105℃ 1.8V~5.5V 1V~3.6V 2 2 2Mbps Automatic direction detection、Output enable high-impedance Bidirectional Level translator Open-drain SMBus、I2C VSSOP-8-0.5mm Translators, Level Shifters ROHSNXP SemiconductorsTranslators, Level Shifters
CU01SAH0S00
插件-40℃~+60℃ 1 4P Female Right Angle Type-A USB 2.0 插件 USB Connectors ROHSCviluxUSB Connectors
SI-60062-F
插件1 Copper alloy Gold Non-PoE RJ45 Jack Right Angle Shielded With LED 插件 Ethernet Connectors / Modular Connectors (RJ45 RJ11) ROHSBel FuseEthernet Connectors / Modular Connectors (RJ45 RJ11)
SMBJ24A
DO-214AA(SMB)-55℃~+150℃ 15.4A 24V 26.7V 38.9V 5uA 600W TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHSGOODWORKESD And Surge Protection (TVS/ESD)
README
README.mdAlarmbot project
Alarmbot PCB
Parts
227| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 1uF | Capacitor_SMD:C_0402_1005Metric | C3, C12, C13, C16, C17, C18, C19, C20, C21, C22, C24, C27, C45, C57, C59, C109 +7 |
| 22 | 47uF | Capacitor_SMD:C_1210_3225Metric | C33, C41, C52, C53, C54, C55, C56, C73, C74, C75, C76, C103, C104, C105, C106, C107 +6 |
| 15 | 100nF | Capacitor_SMD:C_0402_1005Metric | C29, C30, C32, C34, C36, C40, C44, C48, C58, C65, C69, C80, C84, C95, C99 |
| 15 | 22uF | Capacitor_SMD:C_1206_3216Metric | C1, C2, C4, C5, C7, C8, C10, C11, C14, C15, C25, C26, C37, C38, C39 |
| 8 | 10uF | Capacitor_SMD:C_1206_3216Metric | C42, C43, C63, C64, C78, C79, C93, C94 |
| 8 | 4.7k | Resistor_SMD:R_0402_1005Metric | R4, R5, R17, R28, R29, R33, R41, R49 |
| 6 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C23, C47, C62, C68, C83, C98 |
| 5 | 10k | Resistor_SMD:R_0402_1005Metric | R24, R32, R40, R48, R56 |
| 4 | 1 | Resistor_SMD:R_0402_1005Metric | R20, R36, R44, R52 |
| 4 | 100k | Resistor_SMD:R_0402_1005Metric | R3, R9, R12, R15 |
| 4 | 158k | Resistor_SMD:R_0402_1005Metric | R21, R37, R45, R53 |
| 4 | 22.1k | Resistor_SMD:R_0402_1005Metric | R19, R35, R43, R51 |
| 4 | 22nF | Capacitor_SMD:C_0402_1005Metric | C46, C67, C82, C97 |
| 4 | 3.57k | Resistor_SMD:R_0402_1005Metric | R22, R38, R46, R54 |
| 4 | 3.9nF | Capacitor_SMD:C_0402_1005Metric | C51, C72, C87, C102 |
| 4 | 470pF | Capacitor_SMD:C_0402_1005Metric | C49, C70, C85, C100 |
| 4 | 64.9k | Resistor_SMD:R_0402_1005Metric | R23, R39, R47, R55 |
| 4 | 80.6k | Resistor_SMD:R_0402_1005Metric | R18, R34, R42, R50 |
| 4 | 820nH | footprints:CMPI1040 | L4, L5, L6, L7 |
| 4 | 820pF | Capacitor_SMD:C_0402_1005Metric | C50, C71, C86, C101 |
| 4 | Conn_01x02 | Connector_JST:JST_VH_S2P-VH_1x02_P3.96mm_Horizontal | J1, J2, J3, J4 |
| 4 | Conn_02x03_Top_Bottom | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J9, J13, J14, J15 |
| 4 | DRV8231DSGR | footprints:SON50P200X200X80-9N | U1, U2, U3, U4 |
| 4 | SIC471ED-T1-GE3 | footprints:SIC471EDT1GE3 | U11, U18, U19, U20 |
| 3 | 200k | Resistor_SMD:R_0402_1005Metric | R2, R7, R27 |
| 3 | 4.7uF | Capacitor_SMD:C_1206_3216Metric | C28, C31, C35 |
| 3 | LMR51450SDRRR | footprints:LMR51450SDRRR | U8, U9, U10 |
| 2 | 1.37k | Resistor_SMD:R_0402_1005Metric | R25, R26 |
| 2 | 13.3k | Resistor_SMD:R_0402_1005Metric | R8, R14 |
| 2 | 19.1k | Resistor_SMD:R_0402_1005Metric | R10, R16 |
| 2 | 20k | Resistor_SMD:R_0402_1005Metric | R1, R6 |
| 2 | 3.3uH | Inductor_SMD:L_Chilisin_BMRx00060630 | L1, L3 |
| 2 | 470 | Resistor_SMD:R_0402_1005Metric | R30, R31 |
| 2 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J12, J16 |
| 2 | Conn_01x04_MountingPin | Connector_JST:JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J17, J18 |
| 2 | Conn_01x05 | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J5, J7 |
| 2 | DRV8428RTER | footprints:RTE0016J | U5, U7 |
| 2 | TPD4EUSB30 | Package_SON:USON-10_2.5x1.0mm_P0.5mm | U15, U16 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C108 |
| 1 | 24.9k | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 6.8uH | footprints:ZEMS0850 | L2 |
| 1 | 7.15k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 74LVC1G07SE-7 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U12 |
| 1 | CU01SAH0S00 | footprints:CONN_CU01SAH0S00_CVI | J11 |
| 1 | ComputeModule4-CM4 | footprints:Raspberry-Pi-4-Compute-Module | Module1 |
| 1 | Conn_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J8 |
| 1 | Conn_ARM_JTAG_SWD_10 | footprints:FTSH-105-XX-YYY-DV-K-P | J6 |
| 1 | G*** | kibuzzard-67D5DC35 | kibuzzard-67D5DC35 |
| 1 | G*** | kibuzzard-67D8C3DC | kibuzzard-67D8C3DC |
| 1 | G*** | kibuzzard-67D6F2E9 | kibuzzard-67D6F2E9 |
| 1 | G*** | kibuzzard-67D6F2AE | kibuzzard-67D6F2AE |
| 1 | G*** | kibuzzard-67D6EFDF | kibuzzard-67D6EFDF |
| 1 | G*** | kibuzzard-67D5DC97 | kibuzzard-67D5DC97 |
| 1 | G*** | kibuzzard-67D6F2CD | kibuzzard-67D6F2CD |
| 1 | G*** | kibuzzard-67D6EFED | kibuzzard-67D6EFED |
| 1 | G*** | kibuzzard-67D6F300 | kibuzzard-67D6F300 |
| 1 | Green | LED_SMD:LED_0402_1005Metric | D2 |
| 1 | ICM-20948 | Sensor_Motion:InvenSense_QFN-24_3x3mm_P0.4mm | U14 |
| 1 | LOGO | LOGO | G*** |
| 1 | LP5810DDSDR | footprints:DSD0008B-IPC_A | U21 |
| 1 | PCA9306DC1 | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U13 |
| 1 | PWR_BUTTON | footprints:TL1017ABAF160QG | SW1 |
| 1 | Red | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | SI-60062-F | footprints:SI-60062-F_STW | J10 |
| 1 | SMBJ24A | Diode_SMD:D_SMB | D3 |
| 1 | STM32G431CBUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U6 |
| 1 | VL53L0CXV0DH1 | Sensor_Distance:ST_VL53L1x | U17 |
| 1 | nRPIBOOT | footprints:TL1017ABAF160QG | SW2 |
Questions
How big is the Alarmbot PCB?
It measures 100 × 67.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Alarmbot use?
227 parts, built around the 74LVC1G07SE-7-MS, ICM-20948, PCA9306DC1 and CU01SAH0S00. 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 Alarmbot KiCad files?
From the benthacher/alarmbot repository on GitHub, at the commit this page was made from: the board is pcb/alarmbot.kicad_pcb and its schematic pcb/alarmbot.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Alarmbot design in my own project?
Its repository states no licence, so its author keeps all rights: ask benthacher before reusing the design.
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