4 layers40.3 × 68.8 mm
4 layers
ImuTag
chrs89/PCBA_IMUTAG_miniA compact IMU tag PCB designed in KiCad.
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 56
- Pads
- 159
- Tracks, vias
- 357, 64
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Jun 2026
- Updated
- 18 Jun 2026
Overview
ImuTag is an open-source printed circuit board by chrs89, from the chrs89/PCBA_IMUTAG_mini repository on GitHub. It is a 4-layer board with 42 parts on 56 nets, routed with 357 tracks and 64 vias.
It is built around the E73-2G4M08S1C, MX25R6435FZAIL0 and LSM6DSV16XTR, with the CC0402GRNPO9BN560, CL31A107MQHNNNE and Q13FC13500004 among its other parts. Its parts include 16 capacitors, 10 resistors, 4 ICs, 3 connectors and 1 diode.
Main components
7
E73-2G4M08S1C
SMD,18x13mm-103dBm、-95dBm -40℃~+85℃ 120m 17.05mA 3.3V 8.27mA 8dBm Bluetooth 5.0、Bluetooth 4.2 PWM、SPI、ADC、USB、I2C、ISP、JTAG、DMA nRF52840 Chip SMD,18x13mm Bluetooth Modules ROHSChengdu Ebyte Elec TechBluetooth Modules
MX25R6435FZAIL0
WSON-8-EP(4x4)-40℃~+85℃ 1.65V~3.6V 100,000 cycles 20 Years 3.2ms 64Mbit 80MHz SPI WSON-8-EP(4x4) NOR FLASH ROHSMXICNOR FLASH
LSM6DSV16XTR
LGA-14-40℃~+85℃ 1.71V~3.6V 2.6uA 4.5KB IMU (accelerometer + gyroscope) SPI、I2C X,Y,Z X,Y,Z ±16g ±4000dps 运动事件检测、同步与时间戳 LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
CC0402GRNPO9BN560
040250V 56pF NP0 ±2% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
CL31A107MQHNNNE
1206100uF 6.3V X5R ±20% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
Q13FC13500004
SMD3215-2P-40℃~+85℃ 12.5pF 32.768kHz 70kΩ SMD crystal oscillator ±20ppm SMD3215-2P Crystals ROHSSeiko EpsonCrystals
SM02B-SRSS-TB(LF)(SN)
SMD,P=1mm,卧贴-25℃~+85℃ 1 1A 1mm 1x2P 2 2.9mm 2P 4.32mm 4mm 50V Auxiliary Solder Pin Copper alloy PA SH Surface Mount, Right Angle Tin UL94V-0 White SMD,P=1mm,卧贴 Wire To Board Connector ROHSJSTWire To Board Connector
README
README.mdPCBA IMU Tag
A compact IMU tag PCB designed in KiCad.
Preview
Project files
*.kicad_pro— KiCad project file*.kicad_sch— schematic*.kicad_pcb— PCB layout
Status
Work in progress.
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C14, C17, C19 |
| 3 | 47K | Resistor_SMD:R_0402_1005Metric | R11, R16, R18 |
| 2 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C18, C20 |
| 2 | 12p | Capacitor_SMD:C_0402_1005Metric | C6, C7 |
| 2 | CC0402GRNPO9BN560 | EasyEDA:C0402 | C9, C10 |
| 2 | CL31A107MQHNNNE | EasyEDA:C1206 | C2, C8 |
| 2 | MountingHole | MountingHole:MountingHole_2.1mm | H1, H3 |
| 1 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4 |
| 1 | 0402WGF0000TCE | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 0402WGF0000TCE | EasyEDA:R0402 | R6 |
| 1 | 0R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 10uH | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 1K | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 220n | Capacitor_SMD:C_0402_1005Metric | C16 |
| 1 | 2M | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 820K | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | Battery_Cell | EasyEDA:CR2032_Custom_Contacts_SMD_AirTagStyle | BT1 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical | J2 |
| 1 | Conn_ARM_SWD_TagConnect_TC2030-NL | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J1 |
| 1 | E73-2G4M08S1C | EasyEDA:WIRELM-SMD_E73-2G4M08S1C | U1 |
| 1 | LED1 | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | LIS2MDLTR | EasyEDA:VLGA-12_L2.0-W2.0-P0.50-BL | U5 |
| 1 | LSM6DSV16XTR | EasyEDA:LGA-14_L3.0-W2.5-P0.50-BR | U4 |
| 1 | MX25R6435FZAIL0 | EasyEDA:WSON-8_L4.0-W4.0-P0.80-BL-EP-1 | U2 |
| 1 | MountingHole | EasyEDA:Slot_1.2x3.0mm_NPTH | H2 |
| 1 | Q13FC1350000400 | EasyEDA:FC-135R_L3.2-W1.5 | X1 |
| 1 | SM02B-SRSS-TB | EasyEDA:CONN-SMD_2P-P1.00_SM02B-SRSS-TB-LF-SN | CN1 |
| 1 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_Pad1.0x1.5mm | JP2 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
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Questions
What parts does the ImuTag use?
42 parts, built around the E73-2G4M08S1C, MX25R6435FZAIL0, LSM6DSV16XTR and CC0402GRNPO9BN560. 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 ImuTag KiCad files?
From the chrs89/PCBA_IMUTAG_mini repository on GitHub, at the commit this page was made from: the board is imuTag.kicad_pcb and its schematic imuTag.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ImuTag design in my own project?
Its repository states no licence, so its author keeps all rights: ask chrs89 before reusing the design.