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#nodered

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My son, the CS major, helps me program my #linux based #raspberrypi pool controller. We use #nodered because it gives a really nice little dashboard and controls all the GPIOs well.

I was looking into the code and spotted this lovely little bit of type coercion. 😃 I can completely relate to what kind of mood he was in when he probably found some stupid bug because it was dealing with the letter "0" instead of the number 0.

OMG - What a ride... after tinkering and yelling at clouds @nocci was able to fix a lot of #NodeRED Code so my flow is way cleaner.

First pic is the whole mess noccis brain spit out yesterday and second shows his work after putting some "real" coding effort into this thing here. (now there are emojis)

(there are maybe some useful infos for you in the alt-text)

Over the past few days, I "channeled" my inner nerd into building an automated radiation detection system using open-source tools.

The device combines an ESP32 running
#ESPHome for sensor data collection, my #HomeAssistant for centralized smart home integration, and #NodeRED for automating hourly Fediverse updates via a bot account

@Radiation_SL (since this Geiger counter is located in northern Germany ( #Schleswig )

Technical Breakdown:

Sensor: Radiation D-v1.1 (CAJOE) - radiation detector

Connectivity: ESP32 transmits via Wi-Fi to Home Assistant

Case:
#3dPrinting the case (photo) - base is black and the lid is blue and shows the logo of "Fallout" (pc game/ TV series)

Automation: Node-RED flow formats data into ActivityPub messages

Decentralized Sharing: Posts include μSv/h readings

While this started as a hardware tinkering project, recent global events — nuclear rhetoric in conflict zones, aging power plants, and insufficient transparency in environmental monitoring — made me realize decentralized citizen science could play a crucial role.

Open-source tools eliminate single points of failure, and Fediverse integration ensures censorship-resistant data sharing.

Feel free to follow my bot account I mentioned above, if you are interested.

If I can find some time I will write a blogpost about the build process and link it in the bio / or just toot about it.

:boost:

2 1/2 Stunden auf dem #PiHole rumgeklimpert, nachdem die #NodeRed-Installation auf demselben #Raspberry keine Verbindung zum Internet mehr hatte. Die DNS-Konfiguration war irgendwie völlig hinüber, lokal im Browser nichts mehr aufrufbar :-/ Alles neu machen - und das unter #Linux, wo ich echt kein Held bin. Viel lesen, aber nun läuft es wieder. Sowas brauch ich an einem Sonntagabend (und auch sonst) nicht. #SmartHome