concrete_head

5 วันที่ผ่านมาdiscuss

In the video David says he's building it just because he wants to. It really sounds like his own passion project. No investors. It's a nice position to be in.

Now I don't know this guy in the slightest. One view could be he's just a geek like us living out his dream building cool potentially useful stuff not entirely sure where it will lead.

A cynical view is it's all about $$$$.

Either way it's great HN content!

concrete_head

23 วันที่ผ่านมาdiscuss

And doesn't bone pretty much block all ultrasound waves? There is a time and place for ultrasound, just like there is for MRI or Xray.

So im curious to know the limitations of this device

concrete_head

5 เดือนที่ผ่านมาdiscuss

My thoughts too. But ive had my definition of waste adjusted before - see bitcoin.

If some people see value in it then....

concrete_head

6 เดือนที่ผ่านมาdiscuss

Or even just the ability to export a 2d dxf which is probably simpler to implement.

STL and 3MF are not very compatible with most CAD software.

concrete_head

8 เดือนที่ผ่านมาdiscuss

I've wondered if LLMs are infact conscious as per some underwhelming definition as you mentioned. Just for the brief moment they operate on a prompt. They wake up, they perceive their world through tokens, do a few thinking loops then sleep until the next prompt.

So what? Should we feel bad for spawning them and effectively killing them? I think not.

concrete_head

9 เดือนที่ผ่านมาdiscuss

Its a typical utilities SCADA system most cities operate.

Much like your setup their are sensors fitted to various infrastructure connected to PLC's connected to licensed uhf radio modems back to a base station (with a few hops through repeaters or microwave backhaul) into a PC running some kind of IO server which handles all the polling and collects the data into a database and SCADA software (Aveva).

Its a weird mashup of hardware and protocols (dnp3, modbus, serial) plus some data coming in through IoT devices over http and all sorts of bits.

All i built was a python script that runs the query (we are talking 200 bits of data) every minite and dumps it into a JSON file. Then there is a caddy server which serves the json, SVG (1.5mb uncompressed) and a vanilla html/javascript (300 ish lines of code, AI helped get started) page that displays it.

Its not open to public, nor is it a replacement for SCADA (SCADA has many many more objects plus the ability to control and send out alarms). There are many more people wanting 'view only' access than the city has pricey SCADA licenses for, so if fills this gap for free. Sorry i can't share more, i moved on from that job.

concrete_head

9 เดือนที่ผ่านมาdiscuss

You can use the browser console to inject any value to any element to verify expected behaviour.

There are also patterns in the water network so issues reveal themselves pretty quick then easy to fix. E.g. pumps on=green, off=grey, fault=red. Easy to spot an element that is misconfigured especially when you look at it all day.

You can also hover over an element and it reveals its tagname in a tooltip which helps. And the script has an error log for things such as if there are any tagnames in the query it can't find a drawing element for or if it failed to set some value

concrete_head

9 เดือนที่ผ่านมาdiscuss

I did this for an entire cities water supply network. SCADA systems UIs are a decade or more behind the modern web, not to mention slow loading and expensive. I took a reticulation diagram and marked all the flow meters, pressure transducers, pumps, reservoir level sensors and even river flow meters just like you said using ids for each element. The data is essentially pulled from a sql query every minute and pushed out through json including any active alarms.

This lets as many users view it as necessary and loads instantly. Has pan and zoom so yiu can capture everything on a page. Fully customisable, used draw.io for the diagram. Professional automation guys jaws dropped when i told them it took a few days to build and didnt require some ridiculous software license

concrete_head

ปีที่แล้วdiscuss

Interesting. Though he didn't say what kind of car he drives, it could be a real shitter

comments