2 layers
Circular PCB
ChowdaryManyam/ATtiny-Chainy
As an OSHWA-certified project, ATtiny-Chainy adheres to the open-source hardware definition, ensuring transparency, collaboration, and accessibility for the maker community.
24 parts1MIT
4 layers78.3 × 65.8 mm
PIC GATE LOCK SYSTEM
tsokomalusi/Electronic-Gate-Lock-System- Size
- 78.3 × 65.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 70
- Pads
- 204
- Tracks, vias
- 378, 47
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 May 2025
- Updated
- 12 Jul 2025
Overview
PIC GATE LOCK SYSTEM is an open-source printed circuit board by tsokomalusi, from the tsokomalusi/Electronic-Gate-Lock-System repository on GitHub. It is a 4-layer board of 78.3 × 65.8 mm with 48 parts on 70 nets, routed with 378 tracks and 47 vias.
It is built around the PIC16F886-I/SS, MAX232N and L293D, with the L7805, AO3401A and B5819W among its other parts. Its parts include 11 capacitors, 8 resistors, 6 diodes, 4 ICs and 4 connectors. It belongs with the PIC boards of this library.
Main components
7
PIC16F886-I/SS
SSOP-28-208mil-40℃~+85℃ 10bit 14KB 20MHz 24 256Byte 2V~5.5V 368Byte 8 Bit Built-in FLASH PIC SSOP-28-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MAX232N
PDIP-160℃~+70℃ 120Kbps 2 2 4.5V~5.5V Transceiver PDIP-16 RS232 ICs ROHSTexas InstrumentsRS232 ICs
L293D
DIP-16-40℃~+150℃ 1.2A 2 4.5V~36V 4mA 600mA DIP-16 Brushed DC Motor Drivers ROHSSTMicroelectronicsStepper Motor Driver
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
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
B5819W
SOD-123-55℃~+125℃ 1.5A 1mA@40V 25A 40V 600mV@1A Standalone SOD-123 Schottky Diodes ROHSMDDSchottky DiodesMBR0520L-TP
SOD-123-65℃~+125℃ 1 Independent 20V 385mV@0.5A 5.5A 500mA 75uA@20V SOD-123 Schottky Diodes ROHSMicro Commercial ComponentsSchottky Diodes
README
README.mdElectronic-Gate-Lock-System
Schematic capture
4-Layer PCB Layout
3D Model
Block Diagram
Fabricated PCB
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1k | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R6, R7 |
| 4 | 10u | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C6 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_4.3mm_M4_Pad_Via | H1, H2, H3, H4 |
| 3 | Screw_Terminal_01x02 | Connector_TE-Connectivity:691137710002 | 12V1, M1, M2 |
| 2 | 10n | Capacitor_SMD:C_0402_1005Metric | C7, C10 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C8, C11 |
| 2 | 1K | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | GREEN | LED_SMD:LED_0603_1608Metric | D6, TXD |
| 2 | RED | LED_SMD:LED_0603_1608Metric | D2, D5 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_D2.5mm | TP1, TP2 |
| 1 | 0.1u | Capacitor_SMD:C_1206_3216Metric | C5 |
| 1 | 100n | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric | C4 |
| 1 | 20MHz | Connector_Dsub:XTAL_HC49P488W46L1150T500H350 | Y1 |
| 1 | 250mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 470R | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 600 @100MHz | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | B5819W | Diode_SMD:D_SOD-123 | D1 |
| 1 | BLUE | LED_SMD:LED_0603_1608Metric | RXD |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | DE9_Pins | Connector_Dsub:A-DF_09_A_KG-T4S | J3 |
| 1 | L293D | Package_SO:SOIC127P1032X265-20N | U4 |
| 1 | L7805 | Package_TO_SOT_SMD:SOT-223 | U2 |
| 1 | LOGO | KiCad_Footprint_logos:logo2 | G*** |
| 1 | MAX232 | Package_SO:SOIC127P600X175-16N | U1 |
| 1 | MBR0520LT | Diode_SMD:D_SOD-123 | D7 |
| 1 | PIC16F886-I/SS | Package_SO:SSOP28_MC_MCH | U3 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Wuerth_629105150521 | J1 |
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Questions
How big is the PIC GATE LOCK SYSTEM PCB?
It measures 78.3 × 65.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the PIC GATE LOCK SYSTEM use?
48 parts, built around the PIC16F886-I/SS, MAX232N, L293D and L7805. 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 PIC GATE LOCK SYSTEM KiCad files?
From the tsokomalusi/Electronic-Gate-Lock-System repository on GitHub, at the commit this page was made from: the board is PIC_GATE_LOCK_SYSTEM.kicad_pcb and its schematic PIC_GATE_LOCK_SYSTEM.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PIC GATE LOCK SYSTEM design in my own project?
Its repository states no licence, so its author keeps all rights: ask tsokomalusi before reusing the design.