An electric Dash-8 equivalent with 20-40 seats would be a game changer on regional routes.
The engines are the highest maintenance and cost items in aircraft. Electric motors should* drastically reduce that. Regional/small use routes are often on razor thin margins, anything to improve those margins will be taken on board very quickly.
*Perhaps battery maintenance replaces that cost with a rough equivalent, I don't know
There is a certain amount of wank factor in mechanical keyboards. But if you are a high volume typist or heavy keyboard user, a keyboard that suits your typing style (with regards to springiness and feedback) absolutely helps.
If you primarily just use the WASD keys a few hours a week with a bit of half assed sorta touch typing in between then they're not really needed.
I just would like to see the results of a recommendation algorithm that gives you something that it thinks you definitely won't like, say, 20 percent of the time.
Because a lot of times in my endless scrolling I just end up with the same old drivel. Throw me something challenging occasionally, jeeeez.
This didn't occur thirty years ago when "reality tv" was in its infancy. The actual reality is well known and abundantly clear now.
This was well understood 20 years ago.
https://en.wikipedia.org/wiki/Chart_Throb
Reality television has always been manipulated for the most draaaama otherwise it's just hours of people sitting around.
For a bit of an experiment, try watching it with the sound off and just subtitles. The music and staging absolutely are used to control the narrative to paint whoever they want as Public Enemy #1.
I guess in that sense reality television accurately portrays modern media.
Precisely.
A 1200 watt microwave is essentially like a 1200 watt bar heater if you're outside the oven cavity. To a person, it will feel pretty warm at a distance of a few feet as the energy is basically unfocused as it exits through the open door.
But to a drone, it's 1200 watts of RF noise near a receiving device that's tuned to listen for signals that are typically around 0.00000001 watts. It would be like trying to hear a pin drop at a rock concert.
Do need to make sure you point it upwards though as it will cause havoc with microwave motion sensors and a bunch of other sensitive listening stuff. Also, good luck getting wifi within a hundred metres of it.
"Outdated", or "impossible"?
I can read and skim documents for salient details at 500 - 800 words per minute.
And then someone links me to a twelve minute video on YouTube where 800 words are spoken in total , 300 of those words are "um,so", and all we're looking at is either the narrator , or possibly a static slide with a few paragraphs on it... and also an inset of the narrator, narrating.
This appears to be more the angle of the person being fed an endless stream of hate on social media and thus becoming radicalised.
What causes them to be fed an endless stream of hate? Algorithms. Who provides those algorithms? Social media companies. Why do they do this? To maintain engagement with their sites so they can make money via advertising.
And so here we are, with sites that see you viewed 65 percent of a stream showing an angry mob, therefore you would like to see more angry mobs in your feed. Is it any wonder that shit like this happens?
Send them a letter via registered mail stating that upon receipt of said letter they waive their right to waive your rights.
when you can help people live in discord.
That live support is super handy when you're 8 timezones apart from the maintainers.
11 hours later
6 hours later
Battery chemistry produces fixed voltages depending on what you use. It depends on where the active components sit on the electronegativity table.
The typical ones are:
Zinc-carbon and alkaline - 1.5 volts per cell.
Lead acid - 2 volts
Nickel Cadmium - 1.2 volts
Nickel Metal Hydride - 1.4 ish.
All the Lithium ion combos - 3.4 to 3.7 volts.
Hi all,
In an effort to liven up this community, I'll post this project I'm working on.
I'm building a solar hot water controller for my house. The collector is on the roof of a three-storey building, it is linked to a storage tank on the ground floor. A circulating pump passes water from the tank to the collectors and back again when a temperature sensor on the outlet of the collector registers a warm enough temperature.
The current controller does not understand that there is 15 metres of copper piping to pump water through and cycles the circulating pump in short bursts, resulting in the hot water at the collector cooling considerably by the time it reaches the tank (even though the pipes are insulated). The goal of my project is to read the sensor and drive the pump in a way to minimise these heat losses. Basically instead of trying to maintain a consistent collector output temp with slow constant pulsed operation of the pump, I'll first try pumping the entire volume of moderately hot water from the top half of the collector in one go back to the tank and then waiting until the temperature rises again.
I am using an Adafruit PyPortal Titano as the controller, running circuitpython. For I/O I am using a generic ebay PCF8591 board, which provides 4 analog input and a single analog output over an I2C bus. This is inserted into a motherboard that provides pullup resistors for the analog inputs and an optocoupled zero crossing SCR driver + SCR to drive the (thankfully low power) circulating pump. Board design is my own, design is rather critical as mains supply in my country is 240V.
The original sensors are simple NTC thermistors, one at the bottom of the tank, and one at the top of the collector. I have also added 4 other Dallas 1-wire sensors to measure temperatures at the top of tank, ambient, tank inlet and collector pump inlet which is 1/3rd of the way up the tank. I have a duplicate of the onewire sensors already on the hot water tank using a different adafruit board and circuitpython. Their readings are currently uploaded to my own IOT server and I can plot the current system's performance, and I intend to do the same thing with this board.
The current performance is fairly dismal, a very small bump of perhaps 0.5 - 1 deg C in the normally 55 degree C tank temperature around 12pm to 1pm, and this is in Australia in hot spring weather of 28-32 degrees C.(There's some inaccuracy of the tank temperatures, the sensors aren't really bonded to the tank in any meaningful way, so tank temp is probably a little warmer than this. But I'm looking for relative temperature increases anyway)
Right now , the hardware is all together and functional, and is driving a 13W LED downlight as a test, and I can read the onewire temp sensors, read an analog voltage on the PCF8591 board (which will go to the NTC sensors), and I'm pulsing the pump output proportionally from 0-100 percent drive on a 30 second duty cycle, so that a pump drive function can simply say "run the pump at 70 percent" and you'll get 21 seconds on, 9 seconds off. Duty cycle time is adjustable, so I might lower it a bit to 15 or 10 seconds.
The next step is to try it on the circulating pump (which is quite an inductive load, even if it is only 20 watts), and start working on an algorithm that reads the sensors and maximises water temperature back to the tank. There are a few safety features that I'll put in there, such as a "fault mode" to drive the pump at a fixed rate if there is a sensor failure, and a "night cool" mode if the hot water tank is severely over temperature to circulate hot water to the collector at night to cool it. There are the usual overtemp/overpressure relief valves in the system already.
All this is going in a case with a clear hinged cover on the front so I can open it and poke the Titano's touchscreen to do some things.
Right now I am away from home from work, so my replies might be a bit sporadic, but I'll try to get back to any questions soon-ish.
A few photos for your viewing pleasure:
The I/O and mainboard plus a 5V power supply mounted up:
The front of the panel, showing the Pyportal:
Thingsboard display showing readings from the current system:
Mainboard PCB design and construction via EasyEDA:
Why do people always ask this kind of crap?
If you have a corporate laptop, it will likely have a suite of software centrally managed by your company's IT department.
It will contain software that is also centrally licenced so that your boss doesn't have to figure out how to pay for thousands of dollars of software, they can just tell IT to bill a licence for software X to your cost centre at $13.75 a month.
It will have a domain login that is your corporate identity which will usually require multi factor authentication.
It will have some corporate VPN solution which operates mostly transparently and requires zero setup on your part.
It will contain company sensitive data which will usually be encrypted by bitlocker, whose keys are stored with your domain account.
It will have the usual Teams/Outlook/SharePoint stuff with a centralised calendar and contacts for your company, and likely security classifications for all the communications you do through it, allowing you to join groups, accept invites to restricted groups, and limit access, all linked to your domain account.
It will have mapped drives to your corporate file storage , again, all linked to your domain account.
It will probably have OneDrive, synced to a corporate server, again, linked to your domain account.
It will have a printing solution that is linked to your domain account so that your printers follow you wherever you go and you can easily find and print to the secure print queue on some random printer you happen to walk past in one of your offices, so you can enter your PIN or swipe your access card and have that IMPORTANT_SECRET_RESEARCH.DOC file print while you're standing in front of the printer.
And finally, your work laptop does not belong to you. Wiping it and installing Linux plus Wine and keeping company sensitive data on an unmanaged device will attract the ire of HR.
Your IT department won't give a crap. But they also won't help if anything doesn't work, such as trying to join a domain to access allllll those domain-linked features with an unauthorised device.
They will simply re-image your laptop to bring it back to a known state that they can deal with, because they are dealing with thousands of devices. They need everything to be homogeneous simply because they don't have the manpower to manage anything else or to audit a million different configurations for security issues or data leaks.
So no, suggesting Linux + Wine to run some "windows exclusive garbage" isn't an answer here.