Latest #robot in sea trials. An old 12v trolling motor provides propulsion. A #RaspberryPi pico is always-on and runs the basics, sensors, h-bridges and such.

An RPi4 will be the main autonomy hub to enable detailed mapping and surveys and such. But for now I can just push #mqtt buttons in #HomeAssistant and move it around.

I built it almost totally out of scrap and epoxy. What a delightful waste of time!

P. S. Note the #lego crew on the bridge.

Going to the Top with a Raspberry Pi Elevator - [BorisDigital] was mesmerised by a modern elevator. He decided to see how hard it ... - https://hackaday.com/2025/04/09/going-to-the-top-with-a-raspberry-pi-elevator/ #raspberrypi #elevator #mqtt

Throwing this question out there:

Is it possible to remap MQTT-messages from a certain IP (or user) to another one?

I only find documentation about remapping outgoing topics (bridge)

Jemensch Hier Erfahrungen mit Strom Zählern auf Hutschiene für einzelne Stromkreise?

Was ich mir vorstelle, aber nicht finde: ein Gerät was Daten von mehreren einzelnen Stromkreisen zusammen führt. Mit #mqtt #rest oder anderer offener Schnittstelle.

I am trying to understand if #curl has support for authorization with #mqtt , but I fail to do so.

I just found an old thread from 2022 about it,

While we are all mad at #bambu for being evil, here is a quality of life improvement for anyone stuck with one of their units. Hopefully it improves your day. (Also, it makes it much easier to get along without their spyware.)

The printers' MQTT broker only accepts a couple of connections. 4 I think. This is an issue if you (for example) use a slicer(1), home assistant(2), xtouch (3), octoprint (4-5), nodered(6+), etc.. And once you use them up, you have to basically turn everything off for a while (up to 12 hours! in my experience) before you can start connecting again.

Using this, any number of clients that use pure MQTT (or handle failures appropriately) can be multiplexed to the printer over a single connection. xTouch, OctoPrint, everything.

gist.github.com/disconn3ct/7257eb31fa278ae9f4ca0b3b0892cb7b

@3dprinting #3dprinting #bambulab #bambulabs #mqtt #homeautomation #smarthome #mqtt

All Aboard the Hack Train: Nottingham’s LED Revival - Hackerspaces are no strangers to repurposing outdated tech, and Nottingham Hackspa... - https://hackaday.com/2025/01/04/all-aboard-the-hack-train-nottinghams-led-revival/ #nottinghamhackspace #reverseengineering #departureboard #softwarehacks #arduinohacks #hackerspaces #arduinouno #nottingham #ledhacks #discord #railway #news #mqtt #led

The Barcode Beast Likes Your CDs - Over the years we’ve featured many projects which attempt to replicate the feel of... - https://hackaday.com/2024/11/19/the-barcode-beast-likes-your-cds/ #homehacks #barcode #pipicow #mqtt

heise+ | Messdaten sammeln und auswerten per MQTT, Node-Red, Influx, Grafana

Wir zeigen, mit welchen Komponenten Sie Daten von Kleingeräten mit Mikrocontrollern einsammeln, langfristig aufbewahren und auswerten.

https://www.heise.de/hintergrund/Messdaten-sammeln-und-auswerten-per-MQTT-Node-Red-Influx-Grafana-10003084.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon

I've often heard that #MikroTik rocks in terms of small routers, etc. and I finally got around to purchasing a new hAP for €30, the intention being to use it for demoing #ansible stuff on "a router"

I don't understand 11/10ths of what the device has to offer, but 5m after unboxing Ansible was talking to the device.

Ten minutes later I yak shave when finding the iot package which allows the router to be an #MQTT client (pub & sub). Not the foggiest idea what to do with that, but it's very cool!

Driven To Over-Engineer a Kids’ Car - You know, it feels as though it’s getting more and more difficult to compete for F... - https://hackaday.com/2024/08/29/driven-to-over-engineer-a-kids-car/ #transportationhacks #raspberrypi #toyhacks #mqtt

TIL: #BTHome is an open standard for sensors to broadcast their measurements using #BLE.

https://bthome.io/

It's definitely worth a look if you are, like me, using ESP32 microcontrollers to measure all kinds of custom stuff and want to feed it to someplace else. For example, #HomeAssistant has built-in support and will auto-detect new BTHome devices.

You might want to consider it as an alternative to #MQTT. It has no delivery guarantees, but OTOH doesn't need LAN or credentials to work.

ESP32 Brings New Features To Classic Geiger Circuit - There’s no shortage of Geiger counter projects based on the old Soviet SBM-20 tube... - https://hackaday.com/2024/06/24/esp32-brings-new-features-to-classic-geiger-circuit/ #environmentalmonitoring #microcontrollers #radiationmonitor #geigercounter #greenhacks #esp32 #mqtt

Forgot to post about the 0.14.0 ha-mqtt-discoverable python module release

**Full Changelog**: https://github.com/unixorn/ha-mqtt-discoverable/compare/v0.13.1...v0.14.0

New Contributors
* @dianlight made their first contribution in https://github.com/unixorn/ha-mqtt-discoverable/pull/167
* @mmaeusezahl made their first contribution in https://github.com/unixorn/ha-mqtt-discoverable/pull/178
* @chripede made their first contribution in https://github.com/unixorn/ha-mqtt-discoverable/pull/182
* @meowmeowahr made their first contribution in https://github.com/unixorn/ha-mqtt-discoverable/pull/197

#HomeAssistant #mqtt @homeassistant

A Smart Power Distribution Unit for Home Automation - Power distribution units, as the name implies, are indispensable tools to have ava... - https://hackaday.com/2024/04/25/a-smart-power-distribution-unit-for-home-automation/ #powerdistributionunit #homeautomation #serverrack #homehacks #node-red #server #esp32 #relay #mqtt #pdu

#TIL You can use #Curl to read and publish #MQTT messages https://curl.se/docs/mqtt.html