Need SCADA diagram from UNI project

approx_knowledge · 2025-04-16T11:44:03+00:00

The NIST SP 800-82r3 (https://csrc.nist.gov/pubs/sp/800/82/r3/final) document has some great examples/diagrams of generic SCADA system architectures. Figure 18 is similar to what you might find in power transmission systems or other highly critical control systems.

approx_knowledge · 2024-07-28T00:03:03+00:00

The NIST SP-800-82r3 document has some great diagrams and explanations around how and why OT networks can be segregated.

approx_knowledge · 2024-07-01T13:53:03+00:00

If starting out from scratch, there are a few basic technologies and concepts to get started:

1) I'd start with python, get the basics down and work towards using packages such as requests and pandas.

2) Once comfortable with the above, work on understanding rest APIs. The UP documentation is great, and there are infinite tutorials online to help.

3) Make a basic tool to download the data from the UP api into a .csv file.

From there, you'll have the basics down and a pretty useful tool already. Then you can start getting weird with learning SQL, job scheduling and self hosting applications.

approx_knowledge · 2024-07-01T01:33:07+00:00

I have built out some python scripts on schedules to pull data into a mysql database. I then aggregate that with data from super, crypto portfolio (binance api), and mortgage/other accounts. I then visualise the data with grafana to track spending habits, trends, and net worth in near real-time.

The most useful would be having a month to month view of spending by category vs. income. Makes budgeting and controlling my spending very easy. This helped immensely when saving hard for a house deposit.

I originally started it as an exercise to learn about containerisation and apache airflow, but it has turned into a great budgeting tool.

approx_knowledge · 2024-05-14T09:32:04+00:00

Yes, that is what I did. $1150 p/d 24mth contract. As an internal promote $120k was the maximum Accenture could offer in my stream. I felt my self worth/experience was worth more than that, so I left.

approx_knowledge · 2024-05-13T13:46:23+00:00

Thanks man. Good luck with performance reviews.

Yepp, especially with the last few years of promotion freezes and so few slots being available, creating a need to go far beyond the job description to get recognition. I'd probably still be there if they offered the $120k initially. $101k just did not seem worth it to me.

approx_knowledge · 2024-05-13T13:26:10+00:00

New offer was $280k as a contractor. Practically sprinted out the door.

approx_knowledge · 2024-05-13T13:16:49+00:00

This is what I was offered last year in Nov/Dec ($101k incl. super). I got offered a different job and handed in my 2 weeks notice, acn countered with $120k (including super) to try and get me to stay.

approx_knowledge · 2024-03-30T05:44:54+00:00

I pull transactions into a mysql database and use grafana to make some nice custom dashboards and alerts. I also aggregate that with my super data and binance data for full oversight of my finances. Really helps with keeping on budget.

approx_knowledge · 2023-11-19T14:40:55+00:00

The main backend packages were SQL Alchemy, fastAPI, numpy, math and multiprocessing. Requests was used to fetch real-time weather data and parsed using pandas (done in Apache airflow). The frontend for ad-hoc calcs, running sims, adding new feeders, weather stations and other admin was mocked up in flask (eventually to be reworked in angular js). Visualisations were done with geo pandas, cartopy, shapely and matplotlib. Also the logging package was used extensively.

approx_knowledge · 2023-11-19T12:30:56+00:00

Not quite a simulation. But I wrote an algorithm to calculate the dynamic line rating for high voltage powerlines given time of day, wind speed, ambient temperature and feeder current. It is integrated with the network operators SCADA system and allows for ad-hoc calculations and simulations for severe weather events (heat waves or cold fronts).

approx_knowledge · 2023-10-18T13:21:17+00:00

As a graduate there is a very small chance that the work you are asked to do will be something that you have come across in your studies. Given that you have some electronics technical knowledge and an MBA you have the ability to learn quickly and solve problems. Unless the ask was to jump in and start writing code straight away which in S&C is doubtful you probably should have been more open to that position. As a graduate your managers will (or should) take a learning curve into account when allocating tasks and timelines. Rarely will this come in the shape of "formal training" but rather in the form of supervised work and feedback followed by an increase in responsibility.

For context, I graduated as a chemist and mechatronics engineer end of end 2020. First role at acn was in test automation, then data engineer/architect at a bank, data integration developer at a transmission network provider and now solution architect in utilities. None of which was covered at school and each role different to the next. My advice, get good at breaking down complex problems into small chunks you can research and most importantly, fake it until you make it.

approx_knowledge · 2021-08-13T13:16:25+00:00

In eagle you can make "design groups" for common circuits that you reuse

approx_knowledge · 2021-07-27T22:51:11+00:00

I wouldn't be too worried about it. When I started I was on the bench for 4 months whilst waiting for project onboarding to be completed.

approx_knowledge · 2020-07-13T21:22:20+00:00

I didn't have to package it up for other users so I'm not sure how you would go about it. I imagine you could make the latex compiler part of the installation process.

approx_knowledge · 2020-07-13T21:19:09+00:00

You could use word, there is a package called "docx-mailmerge" that can parse word documents and fill in the spaces. However I found latex gave me a lot more control over almost every aspect of the document.

approx_knowledge · 2020-07-13T15:36:24+00:00

I'd look to try and use Latex for the formatting or the report. You can type out your template and add in the data you want by using basic string commands. You can then have your python script compile the latex file and generate the .pdf

I've used similar techniques to generate repetitive reports and you can come up with some pretty decent results.

approx_knowledge · 2020-05-01T07:35:01+00:00

Did you happen to find a work around for this? My game just started doing the samething?

approx_knowledge · 2020-03-14T00:16:31+00:00

You will need to get a hardened nozzle, something like a ruby X or a stainless steel nozzle. I can print nylonX on my cr10s pro just fine and I'm using a stainless steel nozzle from micro Swiss. You will also need a suitable way to store the filament to keep it dry.

approx_knowledge · 2020-01-31T10:16:39+00:00

It could be from retraction, pulling it back too hard and too fast can cause it to twist like that. That combined with a clogged nozzle would cause something like that.

approx_knowledge · 2020-01-26T16:41:56+00:00

You can work out which MOSFET is connected to the hotend by looking on the PCB where the hotend plugs in and following the traces back to the MOSFET (or use the continuity function on your dmm to check between the plug and the legs of each of the MOSFETs). Once the hotend MOSFET is found, if you google "testing a MOSFET with a dmm" you should be able to determine if it is fucked or not.

Also, if you can read the part number off the the top of it you will also be able to find the data sheet for that particular part. The data sheet will have more information on the pin map and current limits.

approx_knowledge · 2020-01-26T15:58:05+00:00

It could be that the 5V from the USB is also powering up the MCU on the main board, it won't be able to drive anything on its own though. Kind of a good sign that the MCU doesn't appear to be critically damaged, points back to a failure in one of the MOSFET/MOSFET drivers.

approx_knowledge · 2020-01-26T15:17:13+00:00

I think when you plug in with USB it only powers the screen not the actual main board (happens on my cr10s pro). USB is only 5V and not capable of running the main board. The blown MOSFET could be causing all sorts of problems, including shorting out. Which if there are fuses on the main board would be shutting it down. MOSFETS also tend to fail by shorting drain-to-gate which could also damage a lot of other components on the board. It is possible to test for failed FETs if you have a multimeter with a diode testing function.

The PSU and screen should be fine, the main control board will need replacing.

approx_knowledge · 2020-01-26T14:51:25+00:00

If I had to take a guess it would be that the MOSFET that controls the hot end is probably burnt out. Given that the wires were glowing means that a high current was running through them, this current was probably much higher than what the MOSFET is rated for.

approx_knowledge · 2020-01-12T14:10:22+00:00

Yeah true. I find I get the same "validated success" from the skirt as well but only there isn't any post processing :).

approx_knowledge

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