Entertainment On Wheels
Circuit Cellar|November 2024
In-Dash Panels Control Head Units, Multiple Displays, Cameras and Sensors
Tom Murphy
Entertainment On Wheels

Remember the old eight-track players in cars? They were quirky and idiosyncratic. But today's in vehicle infotainment systems are packed with features and aimed at keeping the driver's eyes on the road. Why is it we can't design a system to remove all our concerns?

(W - "...to heaven." e begin our story with hypothetical music playing)

"And she's buying the stairway..." silent pause... click-click... silent pause That was a sample of an epic rock theme played back on eight-track stereo system in a partially restored 1972 Chevy El Camino (Figure 1). Does anybody remember the old eighttrack players in cars? They were great when they came out, but they had that quirky, inherent flaw: Every time the track switches over to the next one, it would randomly disrupt a song in the middle, inadvertently taking the wind out of the sails of an ambitious crescendo. Consumers put up with this quirk until the cassette decks came out because it was an important innovation. It saved them from having to listen to commercials on the radio in between songs, and then have more control over the music they listened to.

But what seems silly, here and now in the year 2024, we - as a society - still can't figure out how to deliver an ideal vehicular entertainment system - one that doesn't cut out at inconvenient times like a clunky pause in the middle of a song's dramatic conclusion in Figure 2.

Entertainment systems in cars are still highly controversial. We love them when they work, but when they don't, they could be the most vilified embedded system ever created. Not only that, but drivers seem more distracted than ever, and the user interface with in-vehicle infotainment systems seems to get more perplexing with every new generation of added features.

This story is from the November 2024 edition of Circuit Cellar.

Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.

This story is from the November 2024 edition of Circuit Cellar.

Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.

MORE STORIES FROM CIRCUIT CELLARView All
New TI MCUs Enable Edge AI and Industry-Leading Real-Time Control to Advance Efficiency, Safety, and Sustainability
Circuit Cellar

New TI MCUs Enable Edge AI and Industry-Leading Real-Time Control to Advance Efficiency, Safety, and Sustainability

Texas Instruments (TI) introduced two new series of real-time microcontrollers that deliver advancements to help engineers achieve more intelligent and secure processing in automotive and industrial applications.

time-read
1 min  |
January 2025
Using Amazon Alexa to Control Custom IoT Gadgets
Circuit Cellar

Using Amazon Alexa to Control Custom IoT Gadgets

In part two of his article, Brian describes integrating custom IoT gadgets with Amazon Echo using emulation to receive spoken alarms. In part one, he used emulation and Arduino Cloud services as a middleman.

time-read
10+ mins  |
January 2025
Holiday Hangover Hardware Hacking
Circuit Cellar

Holiday Hangover Hardware Hacking

Having too much cheer during the holidays? In this month's article, Colin offers a diversion from the jolly season by urging developers to retreat to the basement to brush up on hardware hacking skills. He shows how a low-cost Raspberry Pi Pico and a TP-Link Tapo C200 smart IP camera could become the next automated bird deterrent or a home automation server.

time-read
8 mins  |
January 2025
Datasheet: Microamps Per Megahertz Ultra-Low Power MCUs Minimize Current Consumption
Circuit Cellar

Datasheet: Microamps Per Megahertz Ultra-Low Power MCUs Minimize Current Consumption

How do chip makers differentiate if many ultra-low power MCUs on the market feature the same processor core? The peripherals and different power states offer various ways to manage current consumption down to microamps per megahertz.

time-read
2 mins  |
January 2025
Smart Home Lock Down Matter Provides Security Blanket
Circuit Cellar

Smart Home Lock Down Matter Provides Security Blanket

As more devices in the smart home connect to the Internet, they become increasingly vulnerable to outside attacks. Developers can now add the latest security measures to their Smart Home devices through Matter.

time-read
10+ mins  |
January 2025
Basic Pulse Circuits
Circuit Cellar

Basic Pulse Circuits

In part one of a three-part series, Wolfgang wrote how basic pulse circuits help digital circuits, such as embedded boards with ARM processors, deal with pulse trains or bursts of pulses from the outside. In Part 2, he dives into enabling flip-flops, timing parameters, and synchronization, design tasks needed to capture, detect, and filter pulses.

time-read
10+ mins  |
January 2025
Building a Wi-Fi Router Watchdog
Circuit Cellar

Building a Wi-Fi Router Watchdog

Dev created a watchdog for a Wi-Fi extender using a Raspberry Pi Pico. This monitors Wi-Fi connectivity for his smart home lighting system, which would require a reset twice a year due to rapid power interruptions.

time-read
8 mins  |
January 2025
Create Your Own PCBs with a CNC Milling Machine
Circuit Cellar

Create Your Own PCBs with a CNC Milling Machine

Using KiCad, CopperCAM, and Candle Software

time-read
10+ mins  |
January 2025
Performance Bottlenecks in Embedded Linux Solutions Analysis, Identification, and Mitigation
Circuit Cellar

Performance Bottlenecks in Embedded Linux Solutions Analysis, Identification, and Mitigation

Good performance is a requirement for every technology, and system designers rely on operating systems to ensure fast and smooth transitions in critical applications. Fortunately, Pedro writes, the embedded Linux OS offers ways for finding, analyzing and mitigating performance bottlenecks so embedded systems can deliver the speed and efficiency that end users expect.

time-read
10+ mins  |
January 2025
Renesas New RA8 Entry-Line MCU Groups Brings High Performance of Arm Cortex-M85 Processor to Cost-Sensitive Applications with Market-Leading CoreMark Performance
Circuit Cellar

Renesas New RA8 Entry-Line MCU Groups Brings High Performance of Arm Cortex-M85 Processor to Cost-Sensitive Applications with Market-Leading CoreMark Performance

Renesas Electronics Corp., a premier supplier of advanced semiconductor solutions, introduced the RA8E1 and RA8E2 microcontroller (MCU) groups, extending the industry's most powerful series of MCUs.

time-read
1 min  |
December 2024