2 layers132.1 × 45.7 mm
IPoS
peterheinrich/InternetOverSpaghetti
Transmitting IP packages over a pair of spaghetti thus demonstrating how media independent IP really is.
42 parts342
2 layers
Smart Door Lock System
MadhanS2912/PCB-Design- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 50
- Pads
- 99
- Tracks, vias
- 255, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Apr 2025
- Updated
- 19 Oct 2026
Overview
Smart Door Lock System is an open-source printed circuit board by MadhanS2912, from the MadhanS2912/PCB-Design repository on GitHub. It is a 2-layer board with 20 parts on 50 nets, routed with 255 tracks and 0 vias.
It is built around the L7805 and BC547. Its parts include 5 diodes, 3 capacitors, 3 resistors, 2 connectors and 2 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BC547
TO-92Bipolar (BJT)Jiangsu Changjing Electronics Technology (CJ)
README
README.mdView this project on CADLAB.io.
PCB-Design
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | C | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1, C2, C3 |
| 3 | LED | LED_THT:LED_D5.0mm | D2, D3, D4 |
| 3 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3 |
| 2 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D5 |
| 1 | Arduino_UNO_R2 | Module:Arduino_UNO_R2 | A2 |
| 1 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | Conn_01x08_Pin | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Horizontal | J2 |
| 1 | Fujitsu_FTR-LYCA005x | Relay_THT:Relay_SPST_Hongfa_HF3F-L-xx-1HL1T | K1 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | WC1602A | Display:WC1602A | DS1 |
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Questions
What parts does the Smart Door Lock System use?
20 parts, built around the L7805 and BC547. 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 Smart Door Lock System KiCad files?
From the MadhanS2912/PCB-Design repository on GitHub, at the commit this page was made from: the board is Smart Door Lock System.kicad_pcb and its schematic Smart Door Lock System.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smart Door Lock System design in my own project?
Its repository states no licence, so its author keeps all rights: ask MadhanS2912 before reusing the design.