dgriffith

joined 2 years ago
[–] dgriffith@aussie.zone 2 points 16 hours ago (1 children)

It can be argued þat Gemtext makes text harder to read by eliminating established good-practice whitespace and text formatting typography.

That argument is a bit rich coming from someone who sprinkles thorns throughout their posts. 👀

[–] dgriffith@aussie.zone 2 points 17 hours ago

Sorry, I've only got this really broad brush. Actually it's more like a firecracker in a paint tin.

[–] dgriffith@aussie.zone 22 points 1 day ago* (last edited 1 day ago) (5 children)

saved up money and bought solar panels is now NOT going to be benefitting from their hard work.

You're still welcome to consume your own solar power in the middle of the day, you don't have to export it. Nobody is forcing you to export.

Export rates are a pittance precisely because there is excess supply in the middle of the day. If this arrangement actually succeeds in shifting some demand to those hours, then export rates for those with excess solar will go up.

[–] dgriffith@aussie.zone 2 points 1 day ago

Top loaders with the central agitator usually have one in the middle on top of the agitator itself, under the bit where you put fabric softener - that whole piece pulls out and there's a little mesh basket to catch the lint.

Either that or they will have one as a panel in the side of the drum.

[–] dgriffith@aussie.zone 9 points 1 day ago

Batteries don’t get lighter as they’re discharged, so…?

JETTISON ZE PACKS!! PREPARE FOR LANDING!!!

[–] dgriffith@aussie.zone 3 points 1 day ago* (last edited 1 day ago)

I miss Gene Wilder.

[–] dgriffith@aussie.zone 5 points 2 days ago* (last edited 2 days ago) (2 children)

Your Honor, I move to dismiss this entire course of reasoning presented by the prosecution, by the simple fact that it was NOT, presented to me carbon copied in duplicate for review, and as per the terms and conditions of my fictitious forum, all submissions must be expressly submitted via such means, and I shall quote DIRECTLY here, under section 37B of the contract signed by him, it states quite clearly that "all offers shall become null and void if" - and you can read it for yourself in this photostatic copy - "I, the undersigned, shall forfeit all rights, privileges, and licenses herein and herein contained," et cetera, et cetera... "Fax mentis, incendium gloria cultum," et cetera, et cetera... "Memo bis punitor delicatum"!

It's all there! Black and white, clear as crystal! YOU stole Fizzy-Lifting Drinks! YOU bumped into the ceiling, which now has to be washed and sterilized, so you GET... NOTHING! YOU LOSE! GOOD DAY, SIR!

[–] dgriffith@aussie.zone 2 points 2 days ago

Oh man that's sweeeeet. This is the kinda shit I want to see at trade shows , not yet another iteration of "world's thinnest phone with a chunky camera bulge".

[–] dgriffith@aussie.zone 14 points 2 days ago* (last edited 2 days ago) (4 children)

Yes, on my imaginary forum you have to submit your new account application in the form of a handwritten note - on carbon paper, so I can tell that an actual pen or pencil pressed against the page - along with a $10 processing fee that goes directly to my beer fund. People who don't know what carbon paper is are automatically excluded from my forum.

Once approved, all posts need to be submitted in a similar manner, along with a transcription fee of $15 to compensate for me having to read (a) your god-awful handwriting , and (b) your god-awful post.

I aim to have all posts and comments processed within 20 business days. To this date I have always comfortably beaten that metric, seeing that nobody has posted anything yet.

[–] dgriffith@aussie.zone 7 points 3 days ago* (last edited 3 days ago) (7 children)

Oh your new phone can fold in half and it's got a 600MP camera and it has a 37Ah battery that lasts for 3 days even when it's churning on its internal navel-gazing AI 24/7? That's greaaaaat.

But I want crazy shit!

I want a row of clicky buttons down one side as direct shortcuts to apps.

I want a TV tuner and a pull-out antenna so I can watch Judge Judy serve some proper smackdown to some entitled neighborhood dispute when I'm on the bus, nearly poking someone's eye out when we hit a pothole.

I want a phone with a laser pointer and an IR blaster (again).

I want a phone that looks like the palmtops of old, with a clamshell case and a little hardware chicklet keyboard and it runs on AA's, except it's also a phone.

I want a phone that slots into a boom box and fully controls and plays tapes with auto-reverse.

I want a phone that's a drone, throw it in the air and it takes group photos.

I want a phone that has gyros and can self-balance on one of it's corners, and do little party tricks, and can hop along behind you if you leave it behind somewhere.

I want a phone that's also a mini 1080p laser projector.

I want its calculator to also have an I Ching mode and print "a suffusion of yellow" instead of any answer greater than 4.

Where's all the FUN stuff?

[–] dgriffith@aussie.zone 3 points 3 days ago* (last edited 3 days ago)

All the people in the thread dissing the station and suggesting all they needed is "X many Y terabyte drives for $2.50 each and give them to people to take off site and store and rotate somewhere and all this wouldn't be a drama"..... Those people have yet to discover that manual processes using fallible humans does not work long term.

The station's IT staff no doubt looked at all of this and decided that off-site backups via a third party was the simplest and most cost effective route. I have no doubt the middle-company advertised that all the actual storage was in Backblaze, a quite reputable storage company. The only thing that has bitten them in the ass is that the middle-company has folded unexpectedly, requiring them to scoot to court to get Backblaze to give them access to their data.

After all of this, it's quite possible that IT will now get enough resources to do the backup via Backblaze directly. If Backblaze wants to put a bit of PR spin on it, they'll task a few engineers to set this up for them. And if Backblaze was smart, they'd go looking for alllll the other little PBS affiliates in the same boat and offer them the same setup.

[–] dgriffith@aussie.zone 3 points 6 days ago (1 children)

Beware, a lot of "induction compatible" cookware just have a thin iron base attached to their non-magnetic pan.

The one's I've seen, that base isn't bonded that well to the pan, and generally warps a bit (making for a wobbly frypan) and finally, is often not the same diameter as the pan above meaning you've got a hot spot in the middle of the pan and cooler edges.

So yeah, as other's have mentioned, go for stuff that is magnetic, and test it all over not just in the middle of the base.

 

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:

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