Black Lives Matter - Action and Equality. ... Adafruit is open and shipping.
0

Explaining 4K 60Hz Video Through USB-C Hubs #Video #Displays #Computing

BMOW (Big Mess o’ Wires) has a great article explaining getting high pixel rates through USB-C hubs. We’ve all experienced the hassles of trying to wire up monitors with some combination of HDMI, DisplayPort, Lightning, etc. along with Mac and PC compatibility.

Forget About HDMI

Lesson 1 is to focus on DisplayPort video connections, and forget about HDMI. You’ll never find a USB-C hub that offers better video capabilities through its HDMI port than through its DisplayPort, but you will find hubs that offer better DisplayPort resolution and refresh rates. I strongly suspect most hubs with an HDMI port are actually implemented internally as a DisplayPort, with an integrated DisplayPort to HDMI converter. This is because DisplayPort video can be carried more efficiently on the USB-C connection than HDMI for the same resolution and refresh rate.

DisplayLink

The other method of supporting external monitors with zero dedicated lanes is DisplayLink. This technology compresses the video data on the host side, sends it over a USB 3.1 connection as generic data, and reconverts it to video on the other end using a special chip like the DL-6950. Conceptually it’s like a remote desktop connection for sharing your work computer’s screen when you’re logged in from home, except everything happens locally on your desktop.

DisplayLink is nice for squeezing high-resolution video over a lower-bandwidth connection like USB, or for supporting multiple high-res external monitors without Thunderbolt. But if you have any alternative, I think DisplayLink is best avoided.

What are the Options?

Putting all this knowledge together, we can group USB-C hubs into four categories based on how they treat video.

See the BMOW article here for the full details and lists of hubs by how they handle data.


We are angry, frustrated, and in pain because of the violence and murder of Black people by the police because of racism. We are in the fight AGAINST RACISM. George Floyd was murdered, his life stolen. The Adafruit teams have specific actions we’ve done, are doing, and will do together as a company and culture. We are asking the Adafruit community to get involved and share what you are doing. The Adafruit teams will not settle for a hash tag, a Tweet, or an icon change. We will work on real change, and that requires real action and real work together. That is what we will do each day, each month, each year – we will hold ourselves accountable and publish our collective efforts, partnerships, activism, donations, openly and publicly. Our blog and social media platforms will be utilized in actionable ways. Join us and the anti-racist efforts working to end police brutality, reform the criminal justice system, and dismantle the many other forms of systemic racism at work in this country, read more @ adafruit.com/blacklivesmatter

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 20,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Battery wars

Electronics — Build It!

Python for Microcontrollers — Python on Microcontrollers Newsletter: IEEE Rates Python Number 1, Discord 23K and more! #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF

Adafruit IoT Monthly — BLE Store Capacity Indicator, Aquarium Automation, and more!

Microsoft MakeCode — MakeCode Arcade Game Garden Jam!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 7/29/2020 featuring Black LED Diffusion Acrylic Panel 12″ x 12″ – 0.1″ / 2.6mm thick! (Video)

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.