4 layers200 × 100 mm
Heteromycin
hasenbanck/heteromycin
A 3D printer board using a powerfull STM32 MCU, TMC5160/TMC2160 driver and a Raspberry Pi or compatible SBC
373 parts40
4 layers65 × 56 mm
Lab1 PCB
EraadAhmed/CS437CS437 Repo
- Size
- 65 × 56 mm
- Copper layers
- 4
- Thickness
- 4.48 mm
- Parts
- 30
- Nets
- 38
- Pads
- 129
- Tracks, vias
- 170, 0
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Sep 2025
- Updated
- 12 Dec 2025
Overview
Lab1 PCB is an open-source printed circuit board by EraadAhmed, from the EraadAhmed/CS437 repository on GitHub. It is a 4-layer board of 65 × 56 mm with 30 parts on 38 nets, routed with 170 tracks and 0 vias.
It is built around the CAT24C32LI-, HC-SR04 and BK-18650-PC6, with the DMG2305UX and DMMT5401 among its other parts. Its parts include 8 resistors, 8 connectors, 2 ICs, 2 transistors and 1 switch.
Main components
5
CAT24C32LI-
PDIP-8-40℃~+85℃ 1,000,000 cycles 1.7V~5.5V 100 Years 1MHz 2mA 3.5us 32Kbit 5ms 5uA Hardware write protection function、Noise suppression function、Built-in power-on reset (POR) I2C PDIP-8 EEPROM ROHSonsemiEEPROM
HC-SR04
-- Ultrasonic Receivers, Transmitters ROHSUniversal MicroelectronicsUltrasonic Receivers, Transmitters
BK-18650-PC6
-Button And Strip Battery ConnectorMPD
DMG2305UX
SOT-23-55℃~+150℃ 1 P-Channel 1.7W 190pF 1V 20V 4.1A 52mΩ@4.5V 7.8nC 740pF P-Channel SOT-23 MOSFETs ROHSTECH PUBLICMOSFETs
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)
README
README.mdCS437
CS437 Repo
Parts
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 3mm_Mounting_Hole | project_footprints:NPTH_3mm_ID | H1, H2, H3, H4 |
| 3 | DNP | Resistor_SMD:R_0603_1608Metric_Pad0.84x1.00mm_HandSolder | R7, R9, R11 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.84x1.00mm_HandSolder | R23, R29 |
| 2 | 3.9K | Resistor_SMD:R_0603_1608Metric_Pad0.84x1.00mm_HandSolder | R6, R8 |
| 2 | Conn_01x02 | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J1, J2 |
| 2 | Motor_DC | CS437:DC_MOTOR | M1, M2 |
| 1 | 40HAT | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J3 |
| 1 | 47K | Resistor_SMD:R_0603_1608Metric_Pad0.84x1.00mm_HandSolder | R24 |
| 1 | BK-18650-PC6 | BK-18650-PC6:BAT_BK-18650-PC6 | BT1 |
| 1 | CAT24C32 | Package_SOIC:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | CONN_01X02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | CONN_02X02 | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | J6 |
| 1 | DMG2305UX | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | DMMT5401 | Package_TO_SOT_SMD:SOT-23-6 | Q2 |
| 1 | GrayScale_Module_Connector | Connector_PinSocket_1.00mm:PinSocket_1x05_P1.00mm_Vertical | J5 |
| 1 | HC-SR04 | HC-SR04:XCVR_HC-SR04 | U1 |
| 1 | PhotoInt_Connector | Connector_PinSocket_1.00mm:PinSocket_1x03_P1.00mm_Vertical | J7 |
| 1 | SW_SPST | Button_Switch_THT:SW_DIP_SPSTx01_Slide_9.78x4.72mm_W7.62mm_P2.54mm | SW1 |
| 1 | Ultrasound _Sensor_Connector | Connector_PinSocket_1.00mm:PinSocket_1x04_P1.00mm_Vertical | J4 |
| 1 | ~ | CS437:Sunfound_Grayscale | GrayScale_Sunfounder1 |
| 1 | ~ | CS437:Sunfounder_Photointerrupter | photoint_sunfounder1 |
Questions
How big is the Lab1 PCB PCB?
It measures 65 × 56 mm and has 4 copper layers, 4.48 mm thick.
What parts does the Lab1 PCB use?
30 parts, built around the CAT24C32LI-, HC-SR04, BK-18650-PC6 and DMG2305UX. 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 Lab1 PCB KiCad files?
From the EraadAhmed/CS437 repository on GitHub, at the commit this page was made from: the board is Lab1_PartA/Lab1_PCB/Lab1_PCB.kicad_pcb and its schematic Lab1_PartA/Lab1_PCB/Lab1_PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lab1 PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask EraadAhmed before reusing the design.
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