2 layers51 × 37 mm
2 layers27.4 × 58.7 mm
Lc29h mikrobus PCB
i2hm/micro_climate_station3Open the KiCad project using KiCad 7 and above.
- Size
- 27.4 × 58.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 49
- Pads
- 168
- Tracks, vias
- 340, 42
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 30 Jan 2024
- Updated
- 27 Apr 2026
Overview
Lc29h mikrobus PCB is an open-source printed circuit board by i2hm, from the i2hm/micro_climate_station repository on GitHub. It is a 2-layer board of 27.4 × 58.7 mm with 48 parts on 49 nets, routed with 340 tracks and 42 vias.
It is built around the TXS0102DCU, BSS123L and MMBT2222A, with the 3000TR, DMP3013SFV and ESDARF02-1BU2CK among its other parts. Its parts include 21 resistors, 9 capacitors, 5 ICs, 5 transistors and 3 diodes.
Main components
7
TXS0102DCU
TSSOP82-Bit Bidirectionnal Voltage-Level Translator for Open-Drain and Push-Pull ApplicationsTexas InstrumentsUncategorised
BSS123L
SOT-23-3-55℃~+150℃ 1 N-channel 100V 170mA 21.5pF 2V 360mW 6Ω@10V SOT-23-3 MOSFETs ROHSonsemiMOSFETs
MMBT2222A
SOT-23-55℃~+150℃ 1 NPN 100 100nA 1V 300MHz 300mW 40V 600mA 6V NPN Standalone SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)3000TR
-- ROHSKeystone ElectronicsBatteryConnector
DMP3013SFV
PowerDI3333-8-55℃~+150℃ 1 P-Channel 1.674nF 1.94W 17mΩ@4.5V 230pF 30V 33.7nC@10V 35A 3V P-Channel PowerDI3333-8 MOSFETs ROHSDiodes IncorporatedMOSFETs
ESDARF02-1BU2CK
02010.2pF 1 1.5A@8/20us 12V 20W@8/20us 5V 5nA Bidirectional ESD IEC 61000-4-2 0201 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
PMEG3010ER
SOD-123W1 Independent 1.5mA@30V 1A 30V 360mV@1A 50A SOD-123W Schottky Diodes ROHSNexperiaSchottky Diodes
README
kicad/rak3172_board/README.mdI2HM Microclimate Station :: Board (RAK3172 version)
Features
- RAK3172 (MCU STM32WLE5) LoRa module (available for 800 MHz and 900 MHz regions w/o TCXO)
- On-board Sensors:
- BME680 : Temperature, Humidity, Pressure
- LIS2DH12 : MEMS digital output motion sensor: ultra-low-power high-performance 3-axis "femto" accelerometer
- KPS-3227SP1C ambient light photo sensor
- Grove connectors for UART (x2), I2C (x1), Analog GPIO (x2) and Digital GPIO (x1)
- Connectivity: LoRaWAN, LoRa Mesh (coming soon)
- Firmware : RIOT OS, STM32CubeIDE
HOW TO INSTALL
Clone this repository.
Open the KiCad project using KiCad 7 and above.
If necessary import the symbol and footprint libraries in the project.
Bonus track
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R7, R8, R10, R11, R13, R17, R18, R19, R20 |
| 4 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3, C5, C8 |
| 2 | 100p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R16 |
| 2 | BSS123L | BSS123L:SOT96P237X111-3N | Q4, Q5 |
| 2 | MMBT2222A | Package_TO_SOT_SMD:SOT-23 | Q1, Q6 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 0.47u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 1 | 1.5k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21 |
| 1 | 10 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 120k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 20k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 3.3k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15 |
| 1 | 3000TR | 3000TR:3000TR | BT1 |
| 1 | 33p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 39k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14 |
| 1 | 4.7u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 68n | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | L1 |
| 1 | 74LVC1G3157GV,125 | 74LVC1G3157GV_125:SOP95P275X110-6N | IC3 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_1.27mm:PinHeader_1x03_P1.27mm_Vertical | J2 |
| 1 | Conn_Coaxial | Connector_Coaxial:SMA_Amphenol_901-144_Vertical | J1 |
| 1 | DMP3013SFV | Package_SON:Diodes_PowerDI3333-8 | Q2 |
| 1 | DS28E36BQ+U | DS28E36BQ+U:SON95P300X300X80-7N | IC2 |
| 1 | ESDARF02-1BU2CK | ESDARF02-1BU2CK:ESDARF021BU2CK | D3 |
| 1 | LC29H | LC29H:LC29HEA | U2 |
| 1 | LED | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | MIKROE-924 | MIKROE-924:MIKROE924 | IC1 |
| 1 | PMEG3010ER | Diode_SMD:Nexperia_CFP3_SOD-123W | D2 |
| 1 | SW_Nidec_CAS-120A1 | Button_Switch_SMD:Nidec_Copal_CAS-120A | SW1 |
| 1 | TXS0102DCU | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U1 |
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Questions
How big is the Lc29h mikrobus PCB PCB?
It measures 27.4 × 58.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Lc29h mikrobus PCB use?
48 parts, built around the TXS0102DCU, BSS123L, MMBT2222A and 3000TR. 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 Lc29h mikrobus PCB KiCad files?
From the i2hm/micro_climate_station repository on GitHub, at the commit this page was made from: the board is kicad/lc29h_mikrobus/lc29h_mikrobus_PCB/lc29h_mikrobus_PCB.kicad_pcb and its schematic kicad/lc29h_mikrobus/lc29h_mikrobus_PCB/ClickID.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lc29h mikrobus PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask i2hm before reusing the design.