fest

10 ms·

31.
by fest 3y ago
Living in a country with rampant odometer tampering: it often requires specialized diagnostics scanner and knowledge where to look (which is different for various vehicles). For example, on a VAG car, most generic diagnostics scanners just
32.
by fest 3y ago
How open is the toolchain/SDK for Renesas parts? I.e. can they be used with gcc/gdb/(c)make with reasonably low effort (like esp32, stm32, rp2040) or is the only realistic option using their IDE?
33.
by fest 3y ago
Looking at the number of high school graduates passing physics exam each year in my country (around 250 out of ~12 thousand total high school graduates), I'm pretty sure corporations won't even have to break a sweat.
34.
by fest 3y ago
> At this point most of the value I provide is not in the volume of code I deliver, My personal record is two characters of code per two weeks of work. Embedded device kept crashing when initializing GUI rendering library (a precompiled
35.
by fest 3y ago
Legacy (the development started in 90s), a lot of different CPUs/SoCs to cover (from various vendors, none of which are famous for their mainline-ness), drivers for ICs that are not publicly available (that you're forbidden to dis
36.
by fest 3y ago
> given that IIRC their RouterOS is essentially a specialized and highly customized GNU/Linux distribution (I could be wrong) Based on my conversations with people who have worked there- RouterOS is running on Linux kernel, but it&#
37.
by fest 3y ago
Yes, remote access to test units (if practical, I.e. more than one instance of system exists) or the real one, simulated h/w for higher level software (i.e. a GUI that connects to simulated device instead of real one). Obviously there
38.
by fest 3y ago
Yeah, I work in a robotics company in Europe- our embedded people are paid essentially the same as web/enterprise software developers in the same market. Definitely a lot less remote Opportunities (though usually for institutional reas
39.
by fest 3y ago
This is what I'm doing. Though it does break down for smaller projects where I had combined firmware and electronics design in the same repository (not a great idea in retrospect).
40.
by fest 3y ago
For certain parts, https://github.com/yaqwsx/jlcparts can be useful to find what you need quicker.
41.
by fest 3y ago
lcsc.com. But keep in mind that their prices for Western companies ICs is often worse than DigiKey/Mouser. The passives and connectors are a lot cheaper.
42.
by fest 3y ago
There's another path to cheap thermal imaging- some premium cars have had thermal imagers for night vision (animal, pedestrian detection) for ~10 years. The most common such system is Autoliv NV3, which is using the same sensor as Tau2
43.
by fest 3y ago
I don't think it's true that UDP is completely unfiltered. I tried setting up a Wireguard site-to-site tunnel for $WORKs Chinese office to access EU office- it stopped working within a day.
44.
by fest 3y ago
And the second patent is even more generic- even open source flight controllers have more advanced state estimation and control loops.
45.
by fest 3y ago
For quite some time I was mostly using the lathe to make parts for milling machine, and milling machine to make parts for the lathe :)
46.
by fest 3y ago
Isn't the volumetric energy density higher for tantalum capacitors? I haven't done detailed comparison, but I recall having to reach for tantalum capacitors in some space-constrained applications requiring 100-200uF at 20-30V.
47.
by fest 4y ago
> However, it seems that XYZ is more or less a typical engineer who acquired skills.. This is true for pretty much every engineering discipline/role.
48.
by fest 4y ago
At the very least, it gives you an idea which receipt to look for in your box of receipts/warranties. And no, I am not happy about having to think about storing receipts for mundane things like light bulbs either, but it is the only th
49.
by fest 4y ago
My personal favourite is from STM32F427: "When PA12 is used as GPIO or alternate function in input or output mode, the data read from flash memory (bank2, upper 1MB) might be corrupted." I can't even imagine the head scratchi
50.
by fest 4y ago
I recently set up a private registry for some custom GUI apps- it really is quite a bit of work just to set up and debug some less obvious issues (e.g. pushing large images). I'm using official registry, docker-registry-ui for auth and
51.
by fest 4y ago
Also, I'm pretty sure all the major smart camera vendors have projects underway which utilize NVidia Jetson.
52.
by fest 4y ago
> As for PC-based systems, I would be very surprised if deep learning models weren't being used in production somewhere. They definitely are. ~5 years ago I built a PC-based system that detected grain direction of wooden boards (loo
53.
by fest 4y ago
I don't think numpy functions are neccessarily multithreaded and probably many are inherently sequential by their nature, so there are definitely case where multiprocessing can speed up the overall program.
54.
by fest 4y ago
Well, for the two smallish projects where I did use zephyr, I didn't find it too bad. But I must have suffered enough fiddling with the real devicetree before :)
55.
by fest 4y ago
I think the root cause is misaligned incentives for the involved parties. IC vendors have a lot of incentive to lock you in their ecosystem. Embedded developers are paid to produce firmware for widgets- their priority is shipping a firmware
56.
by fest 4y ago
It wasn't even feature parity or stability- I was very happy with KiCad and had been using it personally for a couple of years. But when faced with a situation, where some parts of the product were in Altium, some were made by a contra
57.
by fest 4y ago
> It makes no sense at all. Don't underestimate the inertia of processes at established companies. If a company maintains a part library, if the company has more than a few EEs- it can be a multi-man-month effort with potential for
58.
by fest 4y ago
> But I'm not worried that they'll nuke someone else from a distance. I'd like to hear more about this perspective- is this based solely on the fact that they haven't done it before or something else?
59.
by fest 4y ago
I set up a windows VM proxmox with GPU passthrough for exactly this reason. With parsec for remote access it is very usable even with my less than ideal LTE uplink for the occasional need for Windows.
60.
by fest 4y ago
Somewhere between 1 and 2 orders of magnitude more expensive though not without a reason- increased demands for design, manufacturing, testing, reliability and having to support the product for several decades costs money. The cheapest of R

More ›