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#raspberrypi

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I ordered some LED's, sockets, 2n2222 transistors and some 12V relays today.

What do you all think of this plan:

USB->UART (buy it)

UART->LOGIC output (build it: see falstad/video)

LOGIC->RELAY (buy it)

POWER- through relay (spare 12v from shucked HDD's)

Automotive/pinball LED T10 bulbs in sockets mounted to PCB or 3D printed structure. (buy it)

#electronics
#soldering
#microsoft
#MicrosoftTeams
#onair
#onairlight
#dietz
#chrome
#python
#ee
#circuit
#falstad
#LED
#arduino
#raspberrypi

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My python code sends data out of the serial port if Teams is On a call and sends nothing otherwise.

The circuit turns the LED red when it sees pulses and leaves it red for a second or so. As long as it gets serial data once a second or so the LED stays on. If anything goes wrong it goes off

Would you buy a serial to on/off GPIO output module like this?

The other thing I did today was finish setting up OpenMediaVault on a Raspberry Pi for a small home NAS.

The one thing that tripped me up was that I had to plug the hard drive into a powered hub to get it to mount. (Duh!)

I guess I've only plugged thumb drives into a Pi before and not an actual drive.

Sometimes we do complex stuff just for the sake of learning, and that's the essence of why we have home labs.

I built a Fedora container image (for an Ansible execution environment), from inside an Ubuntu container, that is running inside another Ubuntu container (Forgejo runner), while all of them were using the same underlying Docker-in-Docker, running from a Docker Compose (where Forgejo and the Runner also are), on a Debian base OS, on a Raspberry Pi.

Did I need to do that? Absolutely not. Did I like doing it? Obviously yes!

Now I just need to find the time and the head space to write a blog post about it. 😄

Working on a little side project which involves a #raspberrypi zero2w, realised I didn't have any spare SD cards and desperately didn't want to order from Amazon.
Was out in town and popped into CEX and bought a secondhand 16gb SD Card for £5 - in hindsight this is a bit mad, i suspect most people will tell me off but hey valid `reuse` case.

Anyway connected it up, looks empty but stuck Drive Drill on it and it's not been properly wiped - didn't dare look, currently doing a multi pass erase.

Next step is flashing an os image

Continued thread

Attached is a video of the #esp32 happily blinking its payloads across WiFi networks to the #RaspberryPi Zero, for storage in the #sqlite database

Thousands of readings per day (about 1300 each sensor so far, today), all sensors being within 15 readings of each other, I’d call that stable

I’m happy to notice that when a board fails, it eventually recovers on its own (it takes several hours, though)