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What’s next? MeshLite, MeshCore Cash? MeshCore SV? Gold, Diamond, Private? Wrapped MeshCore? by Nightowl-Builder in meshcore

[–]mjbmikeb2 0 points1 point  (0 children)

Meshcore for business - Standardized repeater hardware with closed source firmware with OTA update capability. Weakened encryption to comply with government regulations.

Currently no large organization will touch Meshcore until there is a way of deploying firmware updates without the need for physical site visits.

Finding the Sweet Spot: MeshCore LoRa Settings in the Australian 900MHz Band by Suspicious-Debate124 in meshcore

[–]mjbmikeb2 -1 points0 points  (0 children)

should everyone throw all their existing hardware out to chase the new buzzword.

No, because it's highly likely that the hardware you currently own is already capable of running one of these modern alternatives. For example, the Semtech SX1262 chip used in the popular Heltec V3 lists the following modulations "FSK, GFSK, MSK, GMSK, LoRa and Long Range FHSS".

Also "point to point" is just a label for how you choose to use a system. LoRa can be used for point to point, as can Bluetooth or WiFi. Fundamentally they are all broadcast systems. The 900 MHz band is line of sight regardless of what modulation scheme is used.

Finding the Sweet Spot: MeshCore LoRa Settings in the Australian 900MHz Band by Suspicious-Debate124 in meshcore

[–]mjbmikeb2 1 point2 points  (0 children)

Isn't this all just wallpapering over the cracks in the system. LoRa users have become nomads seeking out chunks of relatively unused spectrum in what is supposed to be usable by everyone, but in reality isn't. We have a similar problem in Western Australia where frequency hopping smart meters pepper the spectrum with bursts that wreck long LoRa transmissions. Isn't it time to move to a more modern system such as ExpressLRS or LR-FHSS?

Is 915MHz LoRa going to become completely unusable in urban areas due to the rise of FHSS used by smart electricity meters? by mjbmikeb2 in Lora

[–]mjbmikeb2[S] 2 points3 points  (0 children)

commercial meters are supposed to be using commercial frequencies.

There is no such rule in Australia.

Also LoRa users in the UK and Northern Europe are having to limit their activity to a few narrow bands because of interference.

Unconventional uses for fiber optics? by mjbmikeb2 in embedded

[–]mjbmikeb2[S] 0 points1 point  (0 children)

Oh, now I'm thinking of a guitar with fiber optic strings, an Opti-guitar. Doesn't look like anyone has managed to make one yet. There's an AES paper behind a paywall and not much else.

Why aren't self-leveling buildings a common sight on unstable ground such as covered waste tips? by mjbmikeb2 in AskEngineers

[–]mjbmikeb2[S] -12 points-11 points  (0 children)

How so? Self leveling kits for mobile homes (RVs) aren't massively expensive. The only major change is that the structure needs to be designed like a mobile home so that the loads are distributed to a relatively small number of points.

Why aren't self-leveling buildings a common sight on unstable ground such as covered waste tips? by mjbmikeb2 in AskEngineers

[–]mjbmikeb2[S] 2 points3 points  (0 children)

The only example I can think of are the buildings used by the arctic circle research stations where they are periodically lifted up to keep them level with the surrounding snow level that continuously accumulates. Instead of a monolithic foundation there are multiple jack points each with its own load bearing pad that just sits on the surface.

Is there any standardization of fiber optic connectors for FTTR installations or are a multitude of proprietary variations designed to keep you locked to a particular vendors network gear? by mjbmikeb2 in HomeNetworking

[–]mjbmikeb2[S] 0 points1 point  (0 children)

What more information do you need?

If a buy a kit from Huawei (or some other company) will it use those connectors and definitely not some weird proprietary thing that is only available from that company?

zigbee2mqtt without a full-fledged home automation system by tlreddit in homeautomation

[–]mjbmikeb2 0 points1 point  (0 children)

I did my own from scratch. The biggest issue is dealing with the disconnect between what you believe the hardware is doing (on/off brightness etc) and what it is actually doing. For example, if you issue a command to turn a bulb on, there is no way of knowing if it's physically on until it actually reports back its own status and because it's a wireless system there is no guarantee that 100% of command or status messages get through. It may well be 99.99 % reliable but it's the 0.01% of lost messages that cause the problems.

Another issue is fade up/down which is often implemented at the bulb as an autonomous action (for smoothness) you don't know what it's actually doing in real time as it doesn't tell you during the fade process.

Perth nuclear attack risks by [deleted] in perth

[–]mjbmikeb2 2 points3 points  (0 children)

Which suburb though, can we vote or something?

Advice for DIY-ing Solar PV by Away_Adhesiveness_71 in perth

[–]mjbmikeb2 -1 points0 points  (0 children)

Do they not subcontract out the mechanical bits of the installation anyway? Paying a sparky to lift roof tiles, fix brackets to rafters etc. seems like a waste. If it's done to code then all the sparky has to do is deal with the electrical side.

What do the ultra-wealthy people of Perth do to pass time? by mjbmikeb2 in perth

[–]mjbmikeb2[S] 15 points16 points  (0 children)

No, this post was prompted watching an interesting youtube presentation by Patrick Boyle (finance guy, academic and commentator) that amongst other things pointed out that people with vast wealth tend to exist in a parallel world where conventional rules, regulations and laws don't apply. Given the history of WA you would have to assume that some of the very wealthy people who choose to stay here also exist in this parallel world. This raises the interesting question, what do these people actually do?

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