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STD Traffic Advisor Arduino Nano

License: Public Domain

Mode: Editors' pick

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Update time: 2021-12-03 21:37:27
Creation time: 2021-11-20 23:51:24
Description

Arduino Nano v3 - Traffic Advisor

 

This is a project to realise a traffic advisor (like the police or emergency services use) to divert traffic in case of an emergency. I use an Arduino Nano V3 as controller and momentary tactile switches to change modes immediately. The board will be connected to a 12V 8-channel relay board (12V/220V 10A) to address 8 LED flashlights or 8 segments of each 6 LEDs on a LED stripe. 

The different switches activate different modes:

    • SW1 - POWER OFF / Store last pattern
    • SW2 - arrow left
    • SW3 - center out
    • SW4 - arrow right
    • SW5 - center in
    • SW6 - switch pattern

Also the board shows you its operational readyness with a green LED and the current pattern with 8 yellow LEDs. The U1 connector is the interface to address the 12V 8-channel relay board (thinking about a new schematics using mosfets instead of relays - means to connect the LED flasher or stripe segements directly to the control board).

Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 HDR-F-2.54_1x2 H1,H2 HDR-F-2.54_1X2 2
2 Arduino_Nano_Header J1 DIP-30_L43.18-W15.24-ARDUINONANO 1
3 LED-Yellow(0603) LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8 LED-0603 8
4 LED-Green(0603) POWER LED-0603 1
5 220Ω R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,R13,R14,R15 R0603 15
6 SW_1 SW1,SW2,SW3,SW4,SW5,SW6 TACTILE-SWITCH-SMD 6
7 8pin connector U1 8PIN CONNECTOR 1
8 LTST-C170KSKT LED_1,LED_2,LED_3,LED_4,LED_5,LED_6,LED_7,LED_8 LED0805-RD_YELLOW 8
9 LTST-C170GKT LED_POWER LED0805-RD_GREEN 1
10 ARDUINO-NANO-3.0 M1 ARDUINO-NANO-3.0 1
11 FQP30N06L Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8 TO-220AB-3_L10.3-W5.0-P2.54-L 8
12 RESISTOR SMD 220 Ω 3216 R_1,R_2,R_3,R_4,R_5,R_6,R_7,R_8,R_POWER 1206 3216 RESISTOR SMD 9
13 power supply 12v U2 POWER SUPPLY 12V 1
14 Relay Small 12V 10A U3 RELAY SMALL 12V 10A 1

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