fest

58 ms·

211.
by fest 7y ago
Driving a lot of LEDs: https://mobile.twitter.com/GregDavill/status/119251563062629... Processing video (especially if you have weird requirements like 14 bit greyscale input): https://gregdavill.com&#x
212.
by fest 7y ago
I really like the perspective provided by the General systems thinking [0]: There are problems with little randomness and number of moving parts: these problems are either easy to reason about, or easy to solve by analytical means (think of
213.
by fest 7y ago
Makes perfect sense. I would assume you also have to re-implement the routines writing the registers/memory to the non-volatile device, as you can't rely on peripheral registers being consistent. Ideally the host should have indep
214.
by fest 7y ago
I did browse the site, but couldn't find in what way exactly the mechanism telemetry/faults get passed from microcontroller to their backend. For the last products I have touched, this would probably be the toughest part- abstract
215.
by fest 7y ago
The part on choosing to swerve vs brake based on risk being hit from behind does not make sense to me. It reminds something motorcycle riders say after a crash: "I felt that I won't be able to stop in time, so I leaned over the bi
216.
by fest 7y ago
I've also had less screwups using the regular toaster oven instead of T962. I suspect that's because T962 uses IR heaters instead of convection. I've regularly had slightly charred or even molten connectors on boards reflown
217.
by fest 7y ago
I know, let's use the power from our own turbine as it spins down to power the emergency shutdown of our reactor! (see: Chernobyl)
218.
by fest 7y ago
When I was working on geo-fencing feature for a small UAV I did see the consequences of naive maths when working with coordinates near antimeridian (e.g. calculating a perpendicular vector of a fence segment). Also related- it seems crazy t
219.
by fest 7y ago
I sometimes wonder how many bugs are lurking in systems using GPS for navigation at 180th meridian (where longitude goes from 180 to -180).
220.
by fest 7y ago
Another thing higher-ups like is having several options presented: a) I can do this in 4-6 weeks, but we can also hire a consultant who can probably do this in 6-8 weeks and it is going to cost roughly this much (in this particular example
221.
by fest 8y ago
Motors from hobby market with custom controllers + belt reduction instead of precision strain wave gearboxes seem to be major cost-reducers. Less precision, but lower cost. More than good enough for perception and control research on how to
222.
by fest 8y ago
Free as in beer-free or free as in Stallman-free? Former: LTSpice (also runs under wine). Latter: ngspice
223.
by fest 8y ago
I really wish product development failures were described in as much detail as successes. So much time is wasted by repeating mistakes someone, somewhere has already made.
224.
by fest 8y ago
He is also running a successful YouTube channel: https://youtube.com/rcmodelreviews
225.
by fest 8y ago
It's just that I have seen projects delay making an important decision by rationalizing that there is not enough information and that the decision can be made later. Then it turns out that the vital piece which fits the requirements do
226.
by fest 8y ago
My biggest worry would be that they don't seem to have chosen a modem for the phone.
227.
by fest 8y ago
I've done this on Olimex A20 boards (random laptop LCD had LVDS, A20 had LVDS output). Recently I've used NanoPC-T4's eDP output. Unfortunately, their eDP pinout does not match VESA standard pinout, so I had to make an adapte
228.
by fest 8y ago
The agreement you have to agree with is very interesting: https://www.livoxtech.com/3296f540ecf5458a8829e01cf429798e/d... Does such an agreement have a legal force (in US/EU)? I get the patent laws and not violati
229.
by fest 8y ago
By using low-pass optical filters on cameras, for example like this one (probably much cheaper in volume): https://www.edmundoptics.com/document/download/396359 I've used band-pass filters which reject everyt
230.
by fest 8y ago
Olimex are migrating to KiCad for their latest designs. Those are of comparable complexity to the SOM they are using.
231.
by fest 8y ago
I only wish the mating connectors had an alignment pins, those are a pain to solder accurately when placed manually.
232.
by fest 8y ago
I concur. i.MX6 not the fastest nor least expensive nor most power efficient SoC but the documentation and wide variety of SOMs make it competitive for lots of products. I've designed it in a thermal imaging product, where it's 20
233.
by fest 8y ago
I'm also using KiCad for personal projects and small prototypes at work. Version 5 with a proper 3D export and interactive routing mode is definitely good enough for me. I find it much easier to use than Eagle and I don't really f
234.
by fest 8y ago
I have seen the product development and manufacturing processes in one of the Chinese sites of the second largest CM in the world. They sure know how to develop and build products no worse than any other nation. On the other hand, I've
235.
by fest 8y ago
Like an optical flow applied for radial motion?
236.
by fest 8y ago
RLS make magnetic encoders going up to 600k CPR (ring with dozens of magnet poles + multiple sensing elements): https://www.rls.si/en/products/rotary-magnetic-encoders That would still need very accurate homing sw
237.
by fest 8y ago
My list will probably be unusual: - Basics of finite element analysis- that helped our team to skip a few iterations during design of vibration isolation solution. - Refreshed my knowledge of BPMN, trying to formalize some internal processe
238.
by fest 8y ago
Just last week I wanted to look up how much I bought some appliance for, five years ago. In the e-mail I see a link that is supposed to let me download the invoice... which of course no longer works because they have updated their ordering&
239.
by fest 8y ago
Does anyone have experience with private LTE networks and iOS devices? Do they generally work in networks like this?
240.
by fest 8y ago
I have tested a device developed by the company I work for on a private LTE network. I was provided SIM cards, which were programmed for their particular network. In Android devices everything worked as expected. However, none of the iOS d

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