I had looked at that part and discounted it, because I only need a single direction (and maybe more output current), but the dual direction parts use 2 voltage supplies and will translate better for my needs.
They also make a handy eval board and Mouser has a few in stock - thanks!
Crap, I just realized the Alif MCU only has 1V8 on fast outputs, and HUB75 likes at the very least 3V3 (~5V x 0.7).
I could use a ST part with 3V3 OSPI, but I have plans to use the advanced graphics capabilities and dual HexSpi on the Alif part to drive 4 higher resolution panels.
So... Voltage translator? Idk... Looking through the TI parts now, nothing perfect (1V8 -> 3V3, but not more than 3V3)and I hate adding more ICs in the middle.
I could probably lower supply to the panel to maybe 4V (4V x 0.7=2.8V), that would actually increase efficiency in the LED driver ICs, the green probably needs about 3V3.
Does anybody make a tiny 16 bit translator or will I end up with 8x 8 bit translators?
I should just use a FPGA and call it a day, BOM budget be damned.
There's no outrunning the latest crop of robots.... An article reporting a half marathon in China run by fully autonomous robots:
"The winning robot, developed by Chinese smartphone brand Honor, finished the race in 50 minutes and 26 seconds, several minutes faster than the half-marathon world record set by Ugandan runner Jacob Kiplimo in Lisbon last month."
Today is the day for this project. Let’s get an Alif dev board to interface with a 64x128 LED display panel.
These panels use a “HUB75” interface, 2 bits of each RGB, and then clock, 5 bit row address, output enable and latch, and the chips are rated to 30Mhz and function as simple shift registers.
This sounds like a perfect fit for a slow OSPI port.
Let’s start by using the 400MHz core and getting a blinky LED on the dev board.
Does anybody have a digital vacuum gauge/sensor they would recommend?
Use case: I have a small enclosure that will be used underwater, and I'm pulling a vacuum in it to simulate being underwater and want to check for very slow leaks. The cheap digital gauge I bought only has a very course resolution, 0.1 PSI.
I pulled it to -13 PSI, and I lost about 0.5 PSI overnight with my first test run. I probably need to also account for atmospheric changes as well.
I don't care about units or absolute accuracy, but I do care about lots of decimal places so I can see minimal pressure changes by sub minute intervals.
Great article in NY Times about Houston's annual Art Car Parade earlier today - lot's of crazy car designs/mods.
(share link should be un-paywalled):
The finance guy came back and said if he added minimal protection and it didn’t increase the agreed upon numbers would I be ok with it. I’m sure a commission is involved. I said sure, same amount down, same payment/term.
That was 15 minutes ago…
I’ve been at the Honda dealership for over 4 hours now. It’s so hard to just buy a car quickly.
Now I’ve finally made it to the finance office and listened politely to the extended warranty spiel, and politely replied no 5 times before looking the guy in the eye and saying it’s a HARD no. That’s why I’m buying my 4th Accord, because I don’t need to worry about reliability.
I should have brought my dinner cause the vending machine snacks are not cutting it.
