Board Design

Board design documentation for Traffic light project

Board Dimensions

The general board size is 230 x 250 mm, more detailed dimensions can be referred in the PDF file below.

188KB

board.pdf

pdf

Circuit Schematic

The circuit schematic of the Smart Traffic Light module composes three parts as listed below

Main Board

Circuit Schematic of the Main Board of Traffic Light Module

Red/Yellow/Green LEDs

Schematic of the Red, Yellow, Green lights

Roadlights

Schematic of the Road lights

Component List

References	Value	Footprint	Quantity
C1, C2	0.1uF	C_1206_3216Metric	2
C4, C6	22uF	C_1206_3216Metric	2
C8, C9	1uF	C_1206_3216Metric	2
C3	1000pF	C_1206_3216Metric	1
C5	4.7uF	C_1206_3216Metric	1
C7	100pF	C_1206_3216Metric	1
R1, R2, R5, R7, R11	10K	R_1206_3216Metric	5
R3, R6, R8	1K	R_1206_3216Metric	3
R4	10k	02LDR1-Enlarge	1
R9	8.2K	R_1206_3216Metric	1
R10	3.3K	R_1206_3216Metric	1
R12	0R	Jumper-1206Padx3	1
L1	2.2uH	L_1206_3216Metric	1
D2, D3	1N4148	D_SOD-123	2
D1	1N5819	D_SOD-123	1
U2, U3	EST248GUA	TO-92-EST248GUA-Enlarge	2
U1	LM393	SOP-8_3.9x4.9mm_P1.27mm	1
U4	XL1509-ADJE1	SOP-8_3.9x4.9mm_P1.27mm	1
U5	MIC5504-3.3YM5	SOT-23-5	1
SW1, SW2	SW_6X6X6	SW_PUSH_6mm-Enlarge	2
SW3	SW_DPDT_x2	SW-MT-0-102-A101-M200-RS+PJ-Enlarge	1
H1, H2, H3, H4	MountingHole	MountingHole_3.2mm_M3	4
RV1, RV2	10k	3386P-Enlarge	2
J4, J5, J6, J7, J8, J9, J10, J11	Roadlight	PinSocket_2x03_P2.54mm_Vertical_SMD	8
J1, J3, J12, J13	Conn_02x05_Odd_Even	PinSocket_2x05_P2.54mm_Vertical_SMD	4
J16, J17, J18	Conn_Charge	XH-2A-P2.54-Enlarge	3
J2	STEP_FPGA	DIP-40_800_Enlarge	1
J15	Conn_BAT	XH-2A-P2.54-Enlarge	1
J19	STEP_PICO	RPi_Pico_Core	1