czardestructo

joined 3 years ago
[–] czardestructo@lemmy.world 2 points 20 hours ago

I will have to give it a shot for the first time in 20 years, I used to enjoy them. I have Starbucks instant coffee and its half decent. Maybe toss it in my Vitamix and see how it goes! Thanks for the nostalgia!

[–] czardestructo@lemmy.world 6 points 21 hours ago (2 children)

Greek American reporting. Yes its for old people. When I was a kid visiting Greece in the 90s when the locals would still take naps in the afternoon to beat the heat, first thing they would do at 3pm when they woke is drink a frapee and smoke a cigarette. Often at the local cafe chatting with other villagers. Always Nescafe because of hyper aggressive marketing. Those days are gone, hardly anyone still even takes a siesta anymore. Its all very globalized, homogeneous.

[–] czardestructo@lemmy.world 2 points 1 day ago

The NVR doesnt have to live in the same VLAN if you give it explicit firewall rules to traverse to the tainted camera VLAN for the explicit purpose of fetching the rtsp stream from the cursed cameras. Its how I setup my network. The cameras are islanded, I setup Frigate to be allowed to go in and open that port over TCP. The cameras try to phone home and pull DNS but are ignored, only traffic they're allowed to product is rtsp to Frigate.

[–] czardestructo@lemmy.world 3 points 2 days ago

Next week is my last week working at Bose, funny to read this. Also, I'm one of the few remaining battery guys. Ear bud battery degradation can happen from charge cycles or time spent at full SoC. For cycles, theyre designed to easily handle hundreds of charge cycles before their capacity degrades below 80% which is the industry standard for 'end of life'. But 80% is hardly end of life. Lithium cells don't like being left at 100% SoC, the high voltage stress damages the chemistry. All that being said, after years of power use you can easily expect at least 80% playtime you had on day one.

[–] czardestructo@lemmy.world 7 points 4 days ago (1 children)

Its more that laptop fans are not designed for 24/7 usage, it will wear out quickly. Plus I hated hearing it.

[–] czardestructo@lemmy.world 15 points 4 days ago (4 children)

I did something similar awhile back. Since you already cut open the bottom of your laptop I would suggest you cutting another window over the CPU and adding a large plate of aluminum as a shelf between the laptop and you hard drives. Then add a shim so the CPU cooler and plate touch, then you will have a passively cool laptop server with an internal UPS battery.

[–] czardestructo@lemmy.world 13 points 6 days ago

Oh that's a silly question. Why not?

The honest answer is in the US all doorbells are powered by simple 24VAC transformers that burn 6–7 watts just being powered up, forever, for decades. This annoyed me plus I wanted a fun bell so I wired up a pi to use a modern, efficient 24VDC power supy to ring the bell and it gets turned on by the pi only when its needed so now my idle wattage is more like 0.25W.

[–] czardestructo@lemmy.world 4 points 6 days ago (2 children)

Yep, with curl because I have OliveTin setup to accept requests to ring the bell from other pis or myself if I feel the need via the web GUI.

[–] czardestructo@lemmy.world 24 points 6 days ago (4 children)

My doorbell is a raspberry pi that uses webhooks to send me messages on my privately hosted chat server and also rings a physical bell built in 1900. Do I win for the most simple high tech doorbell?

[–] czardestructo@lemmy.world 4 points 1 week ago

I'm confident there are no environmental implications.

[–] czardestructo@lemmy.world 5 points 1 week ago

I dont fence, I electic fence. Deer get zapped and learn to fear thin shiny wires. Its worked very well for me for many years.

[–] czardestructo@lemmy.world 2 points 1 week ago (1 children)

Similar, but VPN to parents house and btrbk to backup my brtfs snapshots and disks.

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submitted 2 years ago* (last edited 2 years ago) by czardestructo@lemmy.world to c/whatisthisthing@lemmy.world
 
 

So I'm cleaning out a house and found a brand new Gateway2k Pentium 4 computer. Someone opened the boxes but never took the computer out, its all still in the plastic and I don't want to ruin the unboxing for someone that is into this. The computer is free to a good home in the Boston metro area to make your retro gaming dreams come true! Shoot me a message, first come, first served.

P4 Computer - Gateway 2000 model 510 - part number 2800434

17" TFT Monitor - Gateway FPD1730

Speakers - Boston Acoustics BA745

Edit: Found a taker, hopefully it goes to it's forever home on Saturday!

Edit edit: its gone!

 

Started the peppers in March and tomatoes in April. They were getting too big for my grow light so I evicted them outside. Plenty warm in the cold frame in Massachusetts.

 

So I had a verbal conversation with a coworker yesterday and now I'm getting fed very specific ads. No possible way it's accidental. I have most of the microphone access to apps limited, I have Google assistant turned off and no VPA setup in my home. I use a Oneplus 9 pro, does anyone have recommendations on how to further root cause this or just par for the course for using any standard android OS? Have other folks had similar experience after locking down their stock phones?

 

Action Video

For her birthday my daughter received a cuckoo clock. It had very limited programming for 'quiet hours' so I fiddled with it and ended up breaking it. I didn't want to disappoint her so I gutted it and proceeded to install a Pi Zero W and a headphone amplifier I had built. She now has a fully programmable, USB powered, linux based cuckoo clock where I can program it to whatever suites our needs and it syncs it's time with NTP severs. I even connected her night light to it which turns on at night and off to let her know when its time to get out of bed. This combination also allows us to have dance parties with flashing lights, a dancing bird and fun songs coming out of her cuckoo clock. It's ridiculous and eccentric but it makes us happy!

Build

  • The Pi Zero's dont come with a sound output so I built an audio output filter to convert the PWM output to an analog audio output
  • Connected the analog out to a OPA1642 based headphone amplifier I designed and built
  • Wired up the cuckoo bird's coil actuator to a simple MOSFET drive circuit to control it from the Pi's weak GPIO output
  • Wired up some 5V string lights (used to be battery powered) to a simple MOSFET driver circuit to control it from the Pi's 3.3V GPIO output
  • Wrote some bash code to make the bird dance, the light flash and the cuckoo bird sounds play
  • All the scheduling and execution of the code is done clean and simple in crontab
  • I also have a text to speech engine verbally state the hour after the cuckoo action so my daughter can better learn to tell time by herself

To re-map the audio to the PWM0 output of the Pi

add to /boot/config.txt to remap the audio to the PWM0 and PWM1 pins of the pi.

# Enable audio (loads snd_bcm2835)
dtparam=audio=on
#remaps the audio to the PWM0 and PWM1 pins (pins 18 and 13)
dtoverlay=audremap,pins_18_19

Code

Cron Scheduling

@reboot /home/pi/startup.sh

#cuckoo between 8am and 6pm, inclusive
0 8-18 * * * /home/pi/cuckoo.sh

#turn on the night light at 6:15 pm
15 18 * * * echo "1" > /sys/class/gpio/gpio26/value
#turn off the night light at 6:15 am
15 6 * * * echo "0" > /sys/class/gpio/gpio26/value

Startup Configuration for GPIO

#!/bin/bash

#setup the GPIO
#"In order to use a GPIO pin through sysfs, we first have to “export” each one to make the appropriate paths available."
echo "17" > /sys/class/gpio/export
echo "26" > /sys/class/gpio/export
#set direction
echo "out" > /sys/class/gpio/gpio17/direction #cuckoo movement
echo "out" > /sys/class/gpio/gpio26/direction #nightlight

Flashing Light Code

#!/bin/bash

i=1

while [ "$i" -le 3 ]; do
        #turning the GPIO on
        echo "1" > /sys/class/gpio/gpio26/value
        sleep 0.050
        echo "0" > /sys/class/gpio/gpio26/value
        sleep 0.050
        i=$((i + 1))
done

Cuckoo Code

#!/bin/bash
i=1
echo "Looping "$(date +%I)" times"

while [ "$i" -le "$(date +%I)" ]; do
        aplay /home/pi/cuckoo.wav &
        #flash the lights three times quickly
        /home/pi/flash.sh &
        #turn on the cuckoo bird coil to make it bob down and flaps its wings
        echo "1" > /sys/class/gpio/gpio17/value
        sleep 0.300
        #turn off the cuckoo bird coil so it sits back down
        echo "0" > /sys/class/gpio/gpio17/value
        sleep 0.700
        i=$((i + 1))
done
#Text to speech engine, speaks the current hour through the speaker
#date + sed command below returns the hour, in 12 format, and the sed command removes the leading zeros
espeak -v mb-en1 -s 120 "it is $(date +%I | sed 's/^0*//') oh clock"
 
 

Title says most of it. Spin electric scooters exited the Seattle market and abandoned their scooters all over the city and apparently they have a pi 4 in them!

 

Does anyone else have a Turbo Button™ on their router? My wifi router is in essentially attic space with no AC so it gets hot and acts up with connectivity issues. My turbo mode solves the problem.

 

"The paper, which the students wrote as part of an applied lab course, found that costs are diffused across a number of areas and involve things people don’t often consider. Beyond those for individual drivers, road maintenance, snow removal, and policing, there are less-obvious ones, such as those associated with added pollution, value of land set aside for parking lots, lost productivity from sitting in traffic, and various costs associated with injuries and deaths on the road.

Using publicly available data, the authors put the annual public tab at $35.7 billion, which amounts to about $14,000 for every household in the state. Those that do own vehicles pony up an additional $12,000 on average in direct costs."

 

Found some tiny coffee plants while in Hawaii and thought they looked amusingly fake so I grabbed a picture.

 

I call this nonsense host ‘Ghost’, for me it’s similar to a tape backup solution. Fairly simple concept, it’s an old Pi1 + external mechanical drive that sits dormant with its ethernet off. Once a month, at a random time and random date it enables the ethernet, spins up the drive and pulls data from the main server to update its drive then goes black until next month. The only way to check or maintain the pi is a push button that toggles the ethernet interface. I slapped it together with some scrap wood, spare hardware and screwed it to a 2x4 in a dark corner of my basement. It’s my 5th string backup, the ultimate insurance policy because I’m mental.

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