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Smart car chamber #1 Unboxing the kits

fyaocn

1 Introduction

Smart car chamber ,  it’s for ambient lighting, status indicators, or interactive feedback.

Choosing the right LEDs and auxiliary parts can make it work in right way. Together with the kit of six Würth Elektronik IC RGB LEDs (each with unique packaging and performance) plus essential auxiliary components. Hers it is, 

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The kit arrived in a sturdy cardboard box lined with filling packing paper—no loose parts, no damaged components. Every item was either sealed in Würth’s signature anti-static packaging or labeled with clear part numbers, which is a huge relief for anyone who’s ever lost a tiny LED in a pile of bubble wrap.
First,  the pink anti-static bags emblazoned with “ELECTROSTATIC DISCHARGE SENSITIVE DEVICE” warnings—critical for protecting the LEDs from static damage (a must when working with electronics).
Taped to the outside of  bag was a moisture-sensitive label with a seal date of 2025-06-05, confirming these parts are fresh and ready to use. 

2 The Auxiliary parts

2.1 . multicompPRO Power Supply Unit (Model: IC30A-090-2500)
2.6AMP Multi-Head PBU with a 2.1mm DC connector. It’s rated for 9V，22.5W. This is suitable for Arduino Zero and also fit for leds with power shifting, which shall be below 5.5V DC

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2.2 Arduino Zero

Arduino Zero is a 32-bit microcontroller board (based on the Atmel SAM D21 chip) designed for low-power, high-performance projects—making it ideal for powering the Würth LED kit and smart car chamber systems,
- Core Hardware Specs 
Logic Voltage: 3.3V  – All Würth LEDs in your kit support 3.3-5.5V, so Zero’s native 3.3V logic eliminates the need for level shifters (avoids damage to both the board and LEDs).​
Processing Power: 32-bit ARM Cortex-M0+ CPU (48MHz) – Handles simultaneous LED color control (e.g., 6 RGB LEDs with PWM) 
PWM Pins: 12x 10-bit PWM pins (e.g., D3, D5, D9) – Perfect for dimming/color mixing Würth LEDs (matches their 20kHz/4-6kHz PWM requirements to avoid flickering).​
Power Options: USB (5V/500mA) or external battery (3.7V LiPo) – Syncs with your multicompPRO PSU for stable power, or runs off a small battery for portable smart car chambers.​
Digital/Analog I/O: 14x digital pins (8x as PWM), 6x analog inputs – Connects to LEDs and chamber sensors

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2.3 Solderless Breadboard 
A classic! This breadboard has 4 power rails and 300+ tie points—perfect for prototyping the LED circuit before soldering it to the smart car chamber’s PCB. No more messy wires or burnt components during testing.

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3 Würth Elektronik IC RGB LEDs

Each LED in the kit has a unique part number, packaging type, and use case—perfect for tailoring your smart car chamber’s lighting to different zones  Let’s break them down one by one:
Among which there is one level shifter for LED control, since there is only one available, alternative solution would be used.
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3.1 Part 1311610030140: Chip IC RGB LED Compact (Top-View)

  • Packaging: Tiny chip-style (2a tape, 3000 pcs/reel—though I got 25 samples) with a waterclear lens.
  • Why it’s great for smart cars: Super compact (dimensions: ~1.5mm x 0.9mm) and low-power—ideal for tight spaces like the car’s front grille or dashboard indicators. It runs on 3.3-5.5V (perfect for most microcontrollers) and has a 120° viewing angle, so light is evenly spread without blind spots.
  • Pro tip: Its 20kHz PWM frequency means no flickering—critical for avoiding distractions in a smart car.

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3.2 Part 1312020030000: Chip LED Compact IC RGB (Top-View)

  • Similar to 1311610030140, but with a slight edge in power dissipation (110mW vs. 100mW) and a wider digital input voltage range (VIH = 0.7VDD, VIL = 0.3VDD).
  • its 4-6kHz PWM works seamlessly with Arduino .

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3.3 Part 1312121320437: SMT PLCC6 IC RGB LED (Diffused Lens)

  • Game-changer for ambient lighting: This PLCC6 (6-pin) package has a diffused white lens and a massive luminous intensity—up to 1000mcd for green, 600mcd for red, and 240mcd for blue.
  •  The 110° viewing angle and IPX7 water resistance (yes, waterproof!) make it perfect for the chamber’s exterior or undercarriage lighting. It also has a dedicated “bypass” pin (BI) for emergency dimming—handy if you need to switch to “warning mode” quickly.

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3.4 Part 1313210530000: Side-View IC RGB LED

  • Space-saving hero: As a side-view LED, it emits light horizontally instead of vertically—ideal for the chamber’s side panels or door sills.
  • Specs that matter: 3.3-5.5V, 120° viewing angle, and a slim profile (3.2mm x 1.5mm). I can already picture using this to line the chamber’s edges for a “glowing outline” effect.

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3.5 Part 1315050930002: SMT PLCC4 IC RGB LED (Diffused)

  • Mid-size workhorse: PLCC4 (4-pin) package with a diffused lens—balances brightness (up to 1300mcd for green) and size. It uses 24-bit data transmission (MSB first), so syncing with a microcontroller for color changes is a breeze.
  • ts diffused lens softens light, avoiding harsh glares that could interfere with sensors.

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3.6 Part 1315050930246: SMT PLCC6 IC RGB LED (High-Power)

  • The “warning light” champion: Highest power dissipation (360mW) and IC output current (21mA) of the bunch. It also has a sleep mode (via flag command 3’b101) to save energy when not in use.
  • its 1800mcd green light is visible even in bright rooms, ensuring your smart car’s status is always clear.

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3.7 Breakout PCB boards

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4 Another choice for LED driver

I have prepare one board as alternative choice for led driver

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 The TLD4020-3STD_KIT evaluation platform is designed to facilitate the development and testing of the LITIXTm
TLD4020-3ET device, which features three integrated, independent and protected low-side current sinks and an
embedded 32-bit Arm® Cortex®-M23 core, particularly suited for controlling RGB LEDs.

TLD 4020 is cortex-m23 core MCU with integrated 3-channel led driver. This can drive up to 3 channel directly.