bradfa

28 ms·

361.
by bradfa 4y ago
SODIMMs use a 64 bit wide memory bus. The TI AM62x SOCs only have a 16 bit wide memory bus. There exist modular memory which can work with narrow buses like this but it's not common or inexpensive. Most embedded SOC are meant to be
362.
by bradfa 4y ago
Although there is a C compiler for the PRU, the last time I checked it produced quite less than optimal performance compared to hand assembly. The instruction set is pretty simple so it’s not horrible to write by hand. Maybe they’ve made bi
363.
by bradfa 4y ago
It depends on what you want to do in terms of which type of coprocessor is more useful. The PRUs are quite amazing in what they can do, but the development environment is let's say less than ideal. The AM6xx series SOCs do have the P
364.
by bradfa 4y ago
We had an energy audit done a few years ago and the conclusion was that we needed about 40kBTU/h of furnace (upstate NY). We have an 80 (came with the house when we bought it). It’s actually quite hard to buy any gas furnace smaller th
365.
by bradfa 4y ago
If any one else is really taking upwards of 20,000 IU of vitamin D per day for an extended period, please see your doctor about it to test your blood and to consult you on if this really is the right choice for your health longer term. Too
366.
by bradfa 4y ago
There are very few 14 year old cars which will pass NY state safety inspection left in upstate NY where I live. Cars rot out from rust very fast here due to very high usage of salt to deice roads in winter. Maybe a 14 year old California o
367.
by bradfa 4y ago
2 main reasons I can think of (tl;dr: cost): 1. Braking generates a LOT of energy which needs to be sent somewhere very quickly. Each wheel might need to dissipate hundreds of kW of power, simultaneously, on-demand, at any time in normal
368.
by bradfa 4y ago
Tangent: reading this, all I could think was "you're allocating memory in a motor controller?!?" and then "you're using interrupts in a motor controller!?!". Surely the bug write up was good and it is interest
369.
by bradfa 4y ago
The oil is injected separately from the gas. So only as much oil as is needed for the engine load and speed is injected, which allows varying the oil mix as low as even below 100:1 compared to normal pre-mix concentrations of 40:1 or 50:1.
370.
by bradfa 4y ago
Much of the leaf blower usage in my area is just to blow the grass clippings back onto the lawn when they end up in the street/driveway/parking lot/sidewalk/etc. If the mower just had a mulching system which trapped the
371.
by bradfa 4y ago
For a homeowner, a 2 or 4 stroke gas engine has no compelling benefit these days over a cordless electric string trimmer. The price of the electrics seems to be low enough now and carry enough energy to handle pretty much any single family
372.
by bradfa 4y ago
2-strokes output more power. This isn't my proposal, this is a thing which exists in the world today, produced by various different engine manufacturers for sale to the public today in motorcycles. Miniaturizing it to work on a hand-h
373.
by bradfa 4y ago
As I mentioned in another comment in this, 2-strokes don't need to produce horrible amounts of emissions, you just need to mix the proper amount of oil in with the gas for the given engine load. This can be done (and is done!) today w
374.
by bradfa 4y ago
There is now fuel injected 2-stroke engines which will pass the current Euro4 emissions rules for dirt bikes and motorcycles. There's no reason that a small 2-stroke can't have lower emissions today. It's clearly more expen
375.
by bradfa 4y ago
In theory, yes, all dealerships pay the "invoice" price for a given vehicle. But often there are other financial stipulations for each vehicle, such as "hold back" which is meant to assist the dealership floorplan inter
376.
by bradfa 4y ago
Tesla is leading the way today (somewhat painfully in some areas) but they're not the first to try fixing this. GM's Saturn tried to make buying simpler in the 1990s and surely there were other previous examples, too. Ford seems
377.
by bradfa 4y ago
It depends on how often you change prices, how many stores you have, and where the paper labels would be printed. For many stores now who have an online and physical presence where there's constant price pressures from all sides may c
378.
by bradfa 4y ago
Local to me, real estate investment really only works if you're a landlord and the rent is your income. Buying then selling or flipping homes has not historically been a profitable endeavor. If you timed things just right for COVID,
379.
by bradfa 4y ago
Interesting. It was my understanding that the official Toyota procedure involved lifting the cab and bed off the existing frame and transplanting all of the rest of the truck to a new frame. This seems to outline the requirements: https:&
380.
by bradfa 4y ago
Yes if you use a liquid one like Fluid Film. No if you use a “hard” coating like Ziebart.
381.
by bradfa 4y ago
Chevrolet and GMC full size pickup trucks and SUVs are probably the worst offenders. Which seems counter intuitive since many of GM's engineering and design happens in northern climates with salted roads. It's not all of GM&#x27
382.
by bradfa 4y ago
So everybody smartened up and now things are much better, to the point that there hardly are cars made that have serious rust issues. I find this entertaining. Come to upstate NY, USA where we liberally salt our roads in the winter
383.
by bradfa 4y ago
Are modern Volvos still better than average for corrosion resistance?
384.
by bradfa 4y ago
I think it's a mindset that people "get" trapped. I know many engineers who are trapped, but it was their own doing, they never tried to avoid the trap and have never worked hard to get out from it. It's a mindset, it&
385.
by bradfa 4y ago
I have a BS EE, my day job now is lower level software/firmware - almost entirely with Linux these days but have done a fair share of bare metal, too. My favorite course in university was my 2nd year circuits course, the professor who
386.
by bradfa 4y ago
I just bought a large rolling toolchest for my garage. I had looked extensively at Packout (and similar competing solutions) but couldn't justify going with such a system as my main use is to keep all my tools in my garage, so portabi
387.
by bradfa 4y ago
I've always stored my cordless tools with the batteries disconnected from the tools and I don't have a fancy way of storing either (yet). I believe most cordless tool instruction manuals recommend this.
388.
by bradfa 4y ago
The new, fast, high density flash chips from the big name flash chip vendors are not generally even listed on the vendor websites. You have to talk to a sales person and convince them you're actually going to buy in volume to even get
389.
by bradfa 4y ago
That's fair, I don't know how to fight fires. But it sounds like a lot of these newer houses in the article are not the normal spread-out rural type spacing but much more like suburb size lots. The article says: “Not only are th
390.
by bradfa 4y ago
I live in Webster, NY. It's a suburb of Rochester, NY. There's not a TON of new developments but there's a steady stream of new builds around the various suburbs of Rochester, Buffalo, and Syracuse. Mostly it seems like

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