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#sensor

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Public
Dave Sparks (Bit Wrangler)

My quick take on the Everything Presence Lite sensor:

shop.everythingsmart.io/produc

I've been using PIR sensors for presence detection for years now. They are inexpensive, easy to install, battery-powered so they can be placed anywhere, and reliable. The down side is that the moment you stop moving, you might as well be invisible.

#HomeAssistant #ESPHome #sensor

1/

shop.everythingsmart.ioEverything Presence Lite
Public
C.

#3DPrinting annoyance...

I have an #FLSun #V400 delta printer. A few upgrades, including to stock Klipper. I'm happy with it.

The issue: it's got a filament runout sensor up at the top of the print volume, right after the filament comes down through the top compartment of the printer, which houses the MCU and stepper motors. That works fine for detecting the end of a reel of filament.

But it's basically useless for detecting a filament break, because every break I've had has been between the sensor and the effector/hotend. The sensor happily indicates "filament good" while the hotend uses the remaining ~50cm of filament and then continues to print nothing, while cooking the leftover plastic in the hotend.

What do others do about this? Should I be moving the runout sensor to the effector, just on top of the extruder? Or I've seen what appear to be fancier sensors that detect filament movement, rather than being just a simple presence switch. Anyone have any experience with those?

I appreciate any thoughts from the more-experienced printers in the fedi. Thanks!

#filament#break#runout
Public
Erich M.

4/more #sensor nearfield #sigint

<diabolic laugh>

ALL YOUR SENSORS ARE BELONG TO US!

</diabolic laugh>

well at least these shitbroadcasting on 433 MHz.

These are all weather stations and affiliated outdoor sensors all blaring out data on 433.920 MHz. No idea who owns these - yet.

Next we got to change this Fahrenheit mess to Celsius. And there are other sensors around, thankfully.

Raw temperature and humiidty data outpout by three different sensor stations time : 2024-11-25 15:51:16 model : inFactory-TH ID H 3 ! Channel H | Battery RG] Temperature: 54.40 F Humidity : 56 % Integrity : CRC time : 2024-11-25 15:51:21 model : Bresser-3CH Id H X} Channel H | Battery RG] Temperature: 50.70 F Humidity : 61 % Integrity : CHECKSUM gal : 2024-11-25 15:51:26 eral : Nexus-TH House Code: &6 |Channe1 H | Battery RG] Temperature: 18.10 C Humidity : 21 %
ALT
Public
Erich M.

3/more #hamradio #sensor

This is my provisonal shack sporting the slimmest possible set up. A 5 Watt VHF /UHF handheld transceiver connected to OE5XFK in the Mountains of hell, as everybody should know meanwhile.
😎

The fat USB stick is an #rtlsdr, a tiny software defined radio attached to a laptop running #ubuntu #linux 24.04.

And now we go a-hunting, Nearfield #SIGINT starting with a humble bash proggie.

harkank@dellaxo3:~$ rtl_433

A ltiny software defined radio in the shape of a pregnant usb stick attached to linux laptop, Behing a small VHF/UHF transceiver with a hand mike.
ALT
Public
M Schommer

Hat jemand eine Idee, wie & mit welchen Sensoren ich den Use-Case "Dinge auf dem eingeschalteten Herd vergessen" im #HomeAssistant abbilden kann?

Vielleicht Passiv-Infrarot #Sensor auf den Herd richten & Anwesenheitssensor in der Küche? Wenn erster Temperatur > 60° C verzeichnet aber letzterer keine Person für 5+ Minuten registriert..?

Public
LtUaE42

Bin aktuell auf der Suche nach geeigneten Home-Assistant Sensoren die SICHER miteinander kommunizieren.

Über die Sicherheitsprobleme in einigen aktuellen Standards habe ich schon gelesen (Zigbee usw.)

Will alles in eine HomeAssistant Instanz (Basis: RPI4) einbinden.

Primär: Fenster- u. Türkontakte, Bewegungsmelder, Licht, Temp- u. Feuchtigkeitssensoren

Künftig: Kamera, Rauch- bzw. VOC Melder usw.

Würde mich riesig über Vorschläge und übers teilen freuen.

#homeassistant#smarthone#sensor
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