mrheosuper

Many drones nowaday use optic fiber cable.

I'm happy that more people finding my daily work interesting(embedded stuff).

The main reason i'm sticking around with embedded, seeing your code manifest to physical action is just...fun. No matter how good is your simulator/emulator, nothing beats real life.

1 approach i can think of is having the waveform flashed in factory. On supported controller, you can reflash the stock Waveform with yours.

But still, that does not prevent one from measuring the voltage directly at pixel.

Yeah, those panels are quite delicate, so they need a "maintainence" waveform(full refresh/flashing) for every now and then, to wiggle those stuck droplets.

Also when pushing for high refresh rate, you may need to use higher voltage, to make the droplets rise/fall faster. But sometime, those droplets are driven too hard and kind of stuck forever, so yeah, that's a trade off.

Interesting. Thanks for sharing.

I have a question, hope it's not too sensitive, how do you guy protect your secret waveform ? One with enough tool and determination can just measure voltage at pixel and reverse the whole thing, the chinese can do that in less than a week i bet.

The refresh rate of eink is kind of...muddy. It depends on temperature and target contrast. With the right waveform and voltage, you can push it pretty far(like 30hz+).

The thing is, Eink's waveform is kind of secret afaik, everyone has different tuning.

A countries size doesn't matter since twice the area will, all things being equal

It will never be both objectively and subjectively equal. Even the geographic is already difference, the weather, then there is people, wealth, etc.

If you want fanless arm linux machine, why not macbook m2 air + asahi linux ?

They did not release any documents about their data model that is used to control their headphones. TBF almost every company does that, but unlike Apple, almost all of them have app on both platform(IOS/Android) to manage their devices so there is little reason to reverse engineer at first place.

You write program(usually in C), compile it into machine code(to .hex or .bin file), then "flashing" it using debugger tool. This IC will execute your program.

In Embedded, it's usually agreed that "Bare Metal" means using no OS, not meaning using low level languages.

Wearable MCU is sometime stupidly good. Recently i learned that the new Pepple watch use SF32lb55. It has dual mode bluetooth with LE Audio, all the fancy like pmic, battery charger, usb, 2.5D GPU etc, it also has insanely large memory(16MB flash/8MB PSRAM on some packages). The whole MCU costs like $3.

If you dive into even more niche, NDA-Only MCU, We have BES2700 MCU, which is even better

Gun is stupidly to make. You just need a robust tube, a small hole in the end to trigger and you are done. Ofc it won't fire good, but still should be considered a gun

Yet a lot of people make and watch serious educational and informational videos

a picture is worth a thousand words. Of course your text article can have pictures, but how can you sure you include all the "useful" pictures. Then there is animation which is impossible to do with static picture.

"An idiot admires complexity, a genius admires simplicity"

Interesting, yesterday i was asking it about Nintendo Switch "hax". And it gives me all the resource i need to procceed. It nags me about "ethic" and stuff, but nothing more than that.

I read somewhere, $4k for 64gb ram

Also people could assume airplane mode turning off all wireless connection. It does not turn off bluetooth(at least on my phone)

Surface laptop go/surface go match perfectly. Same size screen, with decent build quality and no software quirk afaik.

Probably debouncing, when anything/any events happen, you have to ask yourself, did this event truly happens, or just some weird glitch and can safely ignore it.

i was thinking of using FPGA to control led matrix, the algorithm is not hard, it's just there are too many pin to control, they need high clock rate if you want high color depth, a using MCU bit bang is not really a choice.

Apply heat to thing you want solder to stick to, not to the solder wire.

There is no such thing as "too much flux" (Actually there is, when doing BGA reflow, but that's advance topic)

1 mistake I see a lot of beginners make is, they bite more than what they can chew.

You can not suddenly be able to replace your PS5 HDMI port if you've never soldered before. Also you need the right tool, a $20 solder is never enough.

Soldering is a skill, you need to practice.

you are over-engineering it. At the end of the day, it's a debug connector, when you use it, you should know what you are doing. The more thing you add to debug connector, the more thing you have to debug when the debug connector not working.

China has improved a lot in commerical, high power LED. 10 years ago, they could not even touch the performance of CREE or Luxeon or Osram LEDs, now thay are on par in term of performace, and much cheaper.

I doubt it would even be true 10 years ago. This article is from small-mid scale led production.

Can you intentionally use the wrong finger so that it will force to enter password

For some small channels, $100 could be more than what youtube pays for their video.

And PCBway sponsors a lot of channels.

Nice. This has been existed for too long.

A lot of "space-rated" components come from consumer space, with certification that it can work in space.

IIRC the Helicopter on Mars using the same snapdragon CPU in your phone.

Also, bit flip can happen without you knowing. A flip in free ram, or in a temp file that is not needed anymore won't manifest into any error, but then, your system is not really deterministic anymore since now you rely on chance.