2 layers68.8 × 68.1 mm
SmartSensor
AvansETI/SmartSensor
SmartSensor: a sensor to be used as sensor and actuator within existing buildings.
68 parts2GPL-3.0
2 layers92 × 117 mm
MicroLevelFour
kvasilak/MicroLevel4PCBPCB files for MicroLevel 4
- Size
- 92 × 117 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 144
- Nets
- 122
- Pads
- 459
- Tracks, vias
- 958, 252
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 2 Mar 2026
- Updated
- 2 Mar 2026
Overview
MicroLevelFour is an open-source printed circuit board by kvasilak, from the kvasilak/MicroLevel4PCB repository on GitHub. It is a 2-layer board of 92 × 117 mm with 144 parts on 122 nets, routed with 958 tracks and 252 vias.
It is built around the ATMEGA324PB-AU, MC7805BDTRKG and SI2304DDS, with the 1PGSMA4747HR3G, ECS-160-9-33B-CTP-TR and MF-LSMF260X-2 among its other parts. Its parts include 56 resistors, 25 capacitors, 23 connectors, 14 diodes and 12 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
7
ATMEGA324PB-AU
TQFP-44(10x10)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 2KB 32KB 39 8 Bit AVR Built-in FLASH TQFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MC7805BDTRKG
TO-252-2(DPAK)-40℃~+125℃@(Tj) 1 10uVrms 1A 24V 2V@(1.0A) 3.2mA 5V 68dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection、Enable、Short Circuit Protection Positive TO-252-2(DPAK) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSonsemiVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SI2304DDS
SOT-23SOT-23 MOSFETs ROHSGOODWORKMOSFETs
1PGSMA4747HR3G
DO-214AC(SMA)-55℃~+175℃ 1 Independent 1.25W 19V~21V 1uA@15.2V 20V 22Ω 750Ω ±5% DO-214AC(SMA) Zener Diodes ROHSTaiwan SemiconductorZener Diodes
ECS-160-9-33B-CTP-TR
SMD3225-4P-40℃~+105℃ 16MHz 60Ω 9pF ±10ppm ±20ppm SMD3225-4P Crystals ROHSECSCrystals
MF-LSMF260X-2
2920-40℃~+85℃ 2.6A 20mΩ 24V 40A 5.2A 5W 75mΩ 2920 Resettable Fuses ROHSBournsResettable FusesMOV-07D390K
插件,P=5mm2.1J 2.4nF@1kHz 250A 250mW 25V 31V 39V 77V 插件,P=5mm Varistors ROHSBournsVaristors
Parts
144| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 160 | Resistor_SMD:R_0805_2012Metric | R43, R44, R45, R46, R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58 |
| 16 | B3B-PH-K-S | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J8, J9, J10, J11, J12, J13, J14, J15, J16, J17, J18, J19, J20, J21, J22, J23 |
| 13 | 100R | Resistor_SMD:R_0805_2012Metric | R9, R10, R14, R15, R18, R19, R20, R23, R24, R27, R28, R39, R40 |
| 13 | 10k | Resistor_SMD:R_0805_2012Metric | R11, R12, R13, R16, R17, R21, R22, R25, R26, R29, R30, R41, R42 |
| 12 | SI2304DDS | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12 |
| 12 | SS24S-E3/61T | Diode_SMD:D_SMA | D2, D3, D4, D5, D6, D7, D9, D10, D11, D12, D13, D14 |
| 10 | 24.9k | Resistor_SMD:R_0805_2012Metric | R1, R2, R31, R32, R33, R34, R35, R36, R37, R38 |
| 8 | 4.7uf 6.3V | Capacitor_SMD:C_0805_2012Metric | C14, C15, C16, C17, C18, C19, C20, C21 |
| 7 | 100nf 16V | Capacitor_SMD:C_0805_2012Metric | C3, C4, C5, C8, C9, C10, C22 |
| 4 | 10uf 16V | Capacitor_SMD:C_0805_2012Metric | C1, C23, C24, C25 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad_TopBottom | H1, H2, H3, H4 |
| 3 | 10uf 25V | Capacitor_SMD:C_0805_2012Metric | C2, C11, C12 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric | R5, R6 |
| 2 | 10pf NP0 | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | TLC59208FIPWR | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U1, U2 |
| 1 | 1.0k | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 100nf 25V | Capacitor_SMD:C_0805_2012Metric | C13 |
| 1 | 1PGSMA4747HR3G | Diode_SMD:D_SMA | D8 |
| 1 | 2.4k | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | ATmega324PB-A | Package_QFP:TQFP-44_10x10mm_P0.8mm | U4 |
| 1 | BLM21BD102SN1D | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | BZT52C4V7-13-F | Diode_SMD:D_SOD-123 | D1 |
| 1 | Conn2x5_CNC#3220-10-0100-00 | Connector_PinSocket_1.27mm:PinSocket_2x05_P1.27mm_Vertical | J1 |
| 1 | Conn_01x02 | digikey-footprints:Power In | J2 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J4 |
| 1 | Conn_01x07_Male | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J5 |
| 1 | Conn_01x12_Male | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J6 |
| 1 | Conn_01x12_Male | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J7 |
| 1 | Conn_02x09_Top_Bottom | Connector_PinHeader_2.54mm:PinHeader_2x09_P2.54mm_Vertical | J3 |
| 1 | ECS-160-9-33B-CTP-TR | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | LIS2DH12TR | MY_KICAD_LIB:LGA-12_2x2mm_P0.5mm | U5 |
| 1 | MC7805BDTRKG | digikey-footprints:TO-252-3 | U3 |
| 1 | MF-LSMF260X-2 | Fuse:Fuse_2920_7451Metric | F2 |
| 1 | MOV-07D390K | Varistor:RV_Disc_D7mm_W3.4mm_P5mm | F1 |
| 1 | NCP718BSN330T1G | Package_TO_SOT_SMD:SOT-23-5 | U6 |
Questions
How big is the MicroLevelFour PCB?
It measures 92 × 117 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MicroLevelFour use?
144 parts, built around the ATMEGA324PB-AU, MC7805BDTRKG, SI2304DDS and 1PGSMA4747HR3G. 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 MicroLevelFour KiCad files?
From the kvasilak/MicroLevel4PCB repository on GitHub, at the commit this page was made from: the board is MicroLevelFour.kicad_pcb and its schematic MicroLevelFour.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MicroLevelFour design in my own project?
Its repository states no licence, so its author keeps all rights: ask kvasilak before reusing the design.
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