conk

15 ms·

151.
by conk 6y ago
There are GPS+LTE pet trackers like Whistle dog collar that seem reasonably priced.
152.
by conk 6y ago
How is stepping DC up/down easier than AC?
153.
by conk 6y ago
Spark plug ceramic is used to break tempered windows. The ceramic is so hard that when it contacts glass all the force is concentrated on a small point causing the tempered window to fail.
154.
by conk 6y ago
There are 2 different topics here. One is carrier grade NAT (CGNAT), which is used by ISPs that have run out of IPv4 addresses so you don’t get a real public IPv4 address, although you should have a public IPv6. If you’re unlucky enough to
155.
by conk 6y ago
Can’t you still access a Unifi video server locally? What’s so hard about setting up a reverse proxy or VPN?
156.
by conk 6y ago
This is true for existing installs. But recently ATT moved to XGPON gateways with integrated ONT. You can no longer bypass these gateways. Also to my knowledge you can’t extract the certs from Pace gateways.
157.
by conk 6y ago
Ya, let’s implement speed limits based upon an known organizational issue that can result in catastrophic failure. https://en.m.wikipedia.org/wiki/Normalization_of_deviance
158.
by conk 6y ago
Heat pump is heating water with electricity... And it’s not the last thing we should do, it’s economical today if you live in a mild climate. I installed one in my house a year ago. The initial cost was ~$500 over a similar gas water heater
159.
by conk 6y ago
PID can’t be used for control of any device that uses a relay. PWM will have the effect of just changing the coil voltage. Even if you could switch a relay on/off quickly you’d just prematurely burn out the contacts. PID is only effect
160.
by conk 6y ago
Why do you assume Scott gave up a 500k/year job? For all we know she left an opportunity worth much more. Also Bezos/Amazon’s success wasn’t guaranteed. Using the benefit of hindsight to evaluate how to split assets now is not ref
161.
by conk 6y ago
It may have taken Tesla longer to bring the solar roof to market than originally planned but it’s been available since early this year. I’ve seen several Tesla roofs in person, and they seem to be a great choice if you need a new roof and c
162.
by conk 6y ago
5% of 450,000w is 22,500 watts. That’s also 5% of the energy not going to charge the battery further raising the power pushed over the charging cable. As for chargers with batteries, I don’t see how that’s viable. 75kWh would require each c
163.
by conk 6y ago
The higher the voltage the faster the dielectric breakdown of insulators. And the cable/plug needs to be designed for 100k+ operations. 1000 kcmil cable x2 +ground and insulation is going to be one beefy cable. I’m not saying it can’t
164.
by conk 6y ago
I don’t see how any car battery charges in 10 minutes. Assuming a 75 kWh battery in the car, charging in 10 minute means providing 450,000 watts for 10 minutes. At 1000V (higher than any DC charger today) would require 450 amps of current.
165.
by conk 6y ago
There are utility scale solar plants being planned/built that produce over a gigawatt of power. They rival the output of the largest power plants today. They can absolutely run industrial facilities as well as homes.
166.
by conk 6y ago
Or apple could make the device a few mm thicker and put in a larger battery that’s able to produce enough current for a reasonable product life.
167.
by conk 6y ago
Unless you really care about saving 1 oz of weight get the regular sized mini. Better flow rate and lasts longer when you really need it. I’ve switched back to the full-size for backpacking because the trade offs for the mini aren’t worth i
168.
by conk 6y ago
A toaster is a simple device but the physics involved in the safe operation is not trivial. You’re dealing with resistive heating elements that get incredibly hot and exposed conductive wires with lethal voltages present. The liability and
169.
by conk 6y ago
What message is sent with a spoiled ballot? How's that different than just not voting at all?
170.
by conk 6y ago
Doesn't mean much without GM saying how many were available. Did they get 100, or 100,000 pre-orders?
171.
by conk 6y ago
Base model Cybertruck: $40k Base model Hummer EV: $80k Both 250 mile range, 2 wheel drive. That’s 1/2 the price. Heck you can get the top of the line cybertruck with 500 mile range for less than the base hummer.
172.
by conk 6y ago
This, to me, is one of the biggest draws of owning an EV. Instead of making a weekly trip to a gas station, you can drive home, and spend a few seconds plugging the car in. That alone is worth a lot. No crowded gas stations, fumes, traffic,
173.
by conk 6y ago
Nice build but over engineered. You could achieve the same result by taping a piece of aluminum foil, or maybe even a wire to the capacitive sensor and connecting it to ground through a relay. Use the ESP8266 to toggle the relay when you wa
174.
by conk 6y ago
Also mobile devices that connect to different networks would get different IPs. Your cell phone would get a different IP address at home, cell, work, friends house etc... Thus there would still need to be some tracking/fingerprint to f
175.
by conk 6y ago
Without special treatment aerogel would be damaged by movement and moisture that is common with a jacket. It’s also very costly to produces compared to other insulating materials.
176.
by conk 6y ago
A search for "Malouf" on the FCC registration website provided no matches. Most likely this product is not registered. In addition, this product lacks a CE mark and has no UL/FM/CSA listing. I'm curious what creepag
177.
by conk 6y ago
I don't see any benefit in using an optocoupler. Using a transistor with flyback diode for protection is acceptable. Both the relay and ESP8266 are powered from the same 5V source, adding an optocoupler is not really isolating anything
178.
by conk 6y ago
You are significantly underestimating the cost of producing molds. You could easily hit $100k for molds made in the USA, $10-20k made in China. That’s also assuming you get the molds right the first time and don’t have to go back and make n
179.
by conk 6y ago
If you did this each device would provide +5V to the same line in the cable and nothing would happen (as there is no load). Same as if you had 2 batteries connected in parallel. If this was an issue than those ‘Y’ shaped USB cables that pro
180.
by conk 6y ago
Is a custom chip really that big of an accomplishment for a company the size and scale of Tesla? I really don’t know. Maybe someone here has some insight into semiconductor design and fabrication and can provide some insight into just how h

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