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kw71

1,175 karma · joined December 21, 2014

I built things that you probably see and use every day, and changed the world a little.
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kw71··on Suicidal Vet Calls MDMA Treatment ‘a Miracle'
It certainly seems like that when you are stuck in a deep, dark hole, an altered consciousness might be the best chance to find some motivation. Like realizing that there is good in the world and you can be a part of it.

MDMA brings some health risks that shouldn't be viewed lightly, though. Be careful.

kw71··on Original Source code for the Furby [pdf]
Removing complexity (gates) means yield goes up. My indications from being on the periphery of developing custom silicon and respinning it is that NRE is not $500k for devices that are more advanced (ie multiple sparc cores + dsp + application specific logic)
kw71··on PC-Retro Motherboard Kit: Build a faithful reproduction of the 1982 IBM PC 5150
with regard to displays, gbs-8200 will help here.
kw71··on Worst Computer Bugs in History: Therac-25 (2017)
This seems like a good time to mention that God gave us hardware interrupt inputs and watchdog timers.
kw71··on Baltimore police will pay consultant $176k to maintain Lotus Notes system
What a deal!
kw71··on Cherry MX History
I used to play the drums and I did not have wrist issues so I figured I would be less affected by RSI from using a keyboard. It could have made it worse though.

Having no win/meta keys on the IBM keyboard actually led me to try different devices but IBM felt better than all those things so I kept coming back and dealing without the keys. I was very happy with the IBM keyboard for a very long time.

Before I found the POS discard Cherrys, I think I had only heavily used the Cherry MX on a Wyse terminal, but I wasn't really thinking about it at the time. The G80-8200 with clears were a great find with only noticeable wear on the num-pad enter key. The keyboard itself stores the setup and handles all the extra keys, not software on the host, so that's especially great for me as I have some macros to control the kvm switch.

There are a lot of keyboards that some people really like but I think are terrible and preferred the IBM over them. Sun type 4, type 5; DEC LK201, LK401; Keytronic come to mind.

kw71··on Cherry MX History
Whatever the reason, I think it was the high actuation force of the IBM keyboard. I don't really slouch. I did not hover my arms and I really don't want to all the time, but I had a pretty good wrist pillow, two "Sun The Network is the Computer" pads adhered together, so my angles probably weren't as bad as you imagine.
kw71··on Cherry MX History
I have heard it among guys who work on pinball and arcade machines. It might be less common now, but next time you encounter an appliance repair tech (like microwave ovens) ask him/her.
kw71··on Cherry MX History
I felt the same thing until after some years I started getting terrible pain in my wrists. It was the IBM keyboard I prized so much and held on to. Then I found some cherry keyboards in the trash in a pile of Point of Sale discards. Now for ten years, "garbage" as been the most prominent and stable feature of my workspace.
kw71··on A Vigilante Fighting Engine Exhaust
Is that an all electric car? Petrol combustion gives off a lot of heat, but if the thermostat is stuck open this works against the goal - modern vehicles will set a fault in this case because slow warm up causes more fuel to be burned and emissions to be expelled.
kw71··on A Vigilante Fighting Engine Exhaust
This is simply antisocial behavior for the sake of being antisocial.
kw71··on A Vigilante Fighting Engine Exhaust
This is ridiculous, I have never had a car need ten minutes of driving to make heat, even in a Pittsburgh winter. I have had a driving license for 36 years.
kw71··on A Vigilante Fighting Engine Exhaust
> however, idling is as (or almost as) effective as low-speeding driving at warming the passenger area

No. The engine, and thus the water, will heat faster under a driving load.

kw71··on Ask HN: What are the things that you have automated in your personal life?
Some industrial laundries do this, but I have heard this over and over again to describe residential HE laundry machines but never actually seen one with a way to measure this. The usual method is to tumble the clothes until the water level in the tub stops dropping. Now they're saturated with water.

What you are probably getting when you start your washer is an estimate considering the steps of the cycle and loaded to capacity. Some machines have turbidity sensors - mine doesn't - this could deliver information that might shorten the cycle. Also the time may go up if it has to deal with suds or stops spinning to rearrange the load if it shakes.

kw71··on Ask HN: What are the things that you have automated in your personal life?
I am doing this too and using ScanSnap. It turns out to be a really good and fast scanner for documents, not really photos. The included manager app works on Windows and Mac, and I have it set up to save bitmap pdf to a network share then run them thru abbyy ocr (also included.) Then I can search from manager's thumbnail browser, the operating system's search facility, or beagle.
kw71··on Let’s Repair an Ancient Macintosh SE/30, Part 2
Best to store this stuff in a conditioned space, not a humid shed with no air circulation. Got some lyts from 1962 working fine here.
kw71··on Let’s Repair an Ancient Macintosh SE/30, Part 2
Tantalum capacitors are not failure proof. Ask around about tantalum failures, usually someone has a memorable story about an old tantalum capacitor that shorted.

If you buy quality electrolytics and don't store the machine in a humid shed/attic they are likely to outlast you.

kw71··on I Got Catfished by a Candidate
http://bonmot.ca/xni_people/ChrisPortman
kw71··on AT&T updates firmware to block access to 1.1.1.1
ipv6 supports traceroute too
kw71··on Apple deleted a job listing that hints at plans to cut Qualcomm and Intel chips
With no experience rolling subscriber access silicon or MMIC this is likely to have comedic results.
kw71··on The Difficulty of Untraining Drug Dogs How to Smell Marijuana
I've been thinking about that too. In Virginia we had a long-time sheriff who was a homosexual and for most of his office, homosexual acts were serious felonies. He'd also been brought up on charges of kidnapping and some kind of attempted sodomy - while in office - but to deal with this they moved the trial to a rural town with an all white jury who would see the nonwhite victim in a predictable way. So much for equally applicable protection of and liability to the laws. Political patronage trumped the rule of law here.
kw71··on Comcast won’t give new speed boost to Internet users who don’t buy TV service
My very first Comcast cablemodem gave 10 mbits/sec due to living in the ghetto (no other data subscribers around) and @Home not having figured out how to set a rate limit in the docsis config. They never changed my service as long as I was on the system. When I moved to another system, a different company was managing their data service and I had a 3 mbits limit.
kw71··on Comcast won’t give new speed boost to Internet users who don’t buy TV service
I hate that they want to bundle SIP telephony. I arranged my own and pay about $5/month.

Google fiber is in town so prices are ok for data. I set out to get 10 mbits/sec service, the least I could buy was 50 mbits for $35. Apparently I'm getting 75 mbits now.

kw71··on The last day of linotype at the NYT (1978) [video]
After about the 11 minute mark the footage shows them working on the front page of the July 1 issue. Looks like they didn't shoot it all in one evening.
kw71··on The Dozenal Society of America
I learned base 12 arithmetic in gradeschool and the textbook used T and E for 10, 11.

I'm pretty sure this was before people started using hex notation for computing and logic.

kw71··on Redemption of a Lost Prodigy
Turn off Javascript.

If you phone in and haggle they will give you the sub for 99 cents.

kw71··on Judge rules California coffee shops must display cancer warnings
Sandblasting operations are a long-recognized hazard. Not only can you get silicosis but sandblasting is an abrasive process and what else besides the sand is hanging around in the air? Tiny bits of the substrate metal? Zinc (galvanizing coating), Cadmium (another plating), Chromate (paint), Lead (paint)? Is a cured cyanoacrylate paint passivated enough that it's safe to breathe its dust?

When I was a kid I didn't have anyone to tell me and no reminders to wear a respirator.

Edit: after submitting, I realized I've never used "silicon" sand as a blasting abrasive, but only glued to paper or cloth. I typically blast with aluminium oxide, coal slag, or glass beads.

kw71··on E.P.A. Prepares to Roll Back Rules Requiring Cars Be Cleaner and More Efficient
Actually, if you run a modern engine in a closed garage now, your eyes won't burn, you won't choke and it won't kill you. While this is a stupid thing to do, the bad stuff is only coming out before it's warmed up (meaning closed loop and catalyst warm enough to function) and if you back your car into the garage you can tell the difference the first time you do a cold start.
kw71··on E.P.A. Prepares to Roll Back Rules Requiring Cars Be Cleaner and More Efficient
This frustration arises from the situation that there are places where there is already more poison in the air than what comes out of the tailpipe of a modern, warmed up petrol vehicle. Los Angeles and Beijing are two examples where I have personally seen this situation on bad days. We are at the point now where mixture control and exhaust treatment leave nothing but carbon dioxide and water being emitted from a properly running automobile.

With regard to parent's assertions: 1. The intake air cleaner is to keep particles out that will damage the engine (and eventually lead to lower performance and emissions control malfunction); 2. Whatever airflow meter, or not, on an engine is for combustion control, but its performance affects emissions output; 3. Exhaust o2 sensors, for 10-25 years depending on make and model, have already been telling the control system the results of combustion on each cylinder, for every combustion; 4. The catalysts are not magic. They are meant to react with specific products of combustion; There is nothing in an automobile, nor should there be, to detect and react with things like methane and ammonia. The only time you see a dust/smog detection is in luxury models that adjust the cabin ventilation in the presence of this for comfort of the occupants. There are no adjustments happening at a rate of 8 kHz: combustion in a cylinder is not even happening at this rate.

kw71··on E.P.A. Prepares to Roll Back Rules Requiring Cars Be Cleaner and More Efficient
I personally don't really agree with regression in this area but more than one automotive engineer has told me that things have gotten to where the exhaust must be cleaner than the air taken in by the engine.
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