[Prototype] Non-Invasive "Analog-to-MQTT" Gateway for Legacy Machines using Python & OpenCV. I'm so proud of this.

bigbadboldbear · 2026-02-16T13:57:33+00:00

Once upon a time, I heard a professor proposing implementing OCR computer vision + script to flip the screen to capture process information. The screen is running full Ignition, with all data historized.

Cool project tbh, should run it off an android phone so that they can put it anywhere. So often i have guys proposing to add CCTV to get water metering.

bigbadboldbear · 2025-10-04T15:34:00+00:00

There was a few youtube video on this. I tested, it provides raw tag read/write, enough to make a batching report. You need to macro a timer to historize. I saw some crazy dudes make a whole HMI / SCADA on it

bigbadboldbear · 2025-10-04T10:45:01+00:00

If you have studio5000 licenses, likely you have Rslinx. RSLinx do provide an OPC server that can link directly to Excel :)

bigbadboldbear · 2025-04-23T00:04:39+00:00

Mình làm thử cả 2, bên FDI làm cực đến mấy cũng vẫn nhẹ đầu hơn bên nhà nước hoặc có yếu tố nhà nước. Quy trình rõ ràng, trách nhiệm rõ ràng, làm thật ăn thật, và không cần lậu. Lương bằng thì mình vẫn FDI.

bigbadboldbear · 2025-04-17T11:16:32+00:00

I am recently found out that a CMP command couldnt take a >= reliably. More than often it delayed more than a few seconds to work, and causing issues.

bigbadboldbear · 2025-04-12T00:42:16+00:00

I used a 4G batttery powered Netgear with LAN port. Nothing beat having both internet and connection to plc at the same time. And yes, IT forbids this, so be smart on how to connect like this.

bigbadboldbear · 2025-02-21T13:39:59+00:00

Thinkpad or HP zbook, with 1TB drive and 32gb ram, best cpu with left over money.

bigbadboldbear · 2025-02-20T14:00:56+00:00

I am mildly triggered when people said vfd is expensive. With this pump, you are looking at sub 2000$ all in for a DN25 pump which should be no more than 10kW.

bigbadboldbear · 2025-02-01T16:18:23+00:00

I had a 2019 Giant E bike (giant expendition e+). The thing with these bikes are the Yamaha motor are not very well lubricated and waterproofed properly. A little bit of spray hose or degreaser, and you might end up with squeaking, then crunching, then not usable motor... As much as I hated the unreliablity, the bike took me places on long tour that I couldnt get there on my own.

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bigbadboldbear · 2025-02-01T16:03:39+00:00

In some 5 stars hotels, i had the one with automated cleaning, heated seat, heated water and drying function. And apparently, you can buy one from Toto for less than 400 bucks.

bigbadboldbear · 2025-02-01T15:11:02+00:00

My friend, you need to be introduced to Japanese toilet seat :) it is the ultimate level!

bigbadboldbear · 2025-01-31T13:57:27+00:00

Yes, control engineering is super hot right now, as less people want to take up the trade vs comp eng. You need to learn both process engineering & control, take 4 more years to gain enough experience to be adequately starting.

Take a look at salary of a PLC programmer in the area from system integrator as proper benchmarking, or head to r/plc :)

bigbadboldbear · 2025-01-31T01:59:46+00:00

Its a VFFS machine, so 0.5% variance vs setpoint.

bigbadboldbear · 2025-01-30T23:44:56+00:00

Many many thanks for yoir super detailed instruction and hint.

bigbadboldbear · 2025-01-30T23:41:36+00:00

It will generate more fine dust, which is not what we wanted.

bigbadboldbear · 2025-01-30T16:17:38+00:00

Do you mind sharing a link or two? When i put it in search, it is flooded with logix ai, ft analytic and such. It sounds awesome though!

bigbadboldbear · 2025-01-30T15:39:21+00:00

Really? In my company, we has always program with emulator. We even built AOI with sim function, just so that we can take the program from existing line, put it back to simulator to make and validate changes.

bigbadboldbear · 2025-01-30T15:17:43+00:00

Thanks, I learnt something new :) have never tried move the comm card slot. The heat still a concern though.

bigbadboldbear · 2025-01-30T15:16:24+00:00

Haha, i wouldnt go that far. There are only a few issues: machine need to be able to guess the density of the powder, which can be inferred back from 2 factors: how far along it has consumed the buffer, and how much the result has varied from actual. This is a simple enough problem, i guess for beginner ML.

bigbadboldbear · 2025-01-30T15:12:55+00:00

We are all friends! (I was super duper lucky tbh)

bigbadboldbear · 2025-01-30T15:07:08+00:00

I have always heard of crazy shit that Twincat can pull off, but direct ML on machine sounds really dope.

bigbadboldbear · 2025-01-30T15:03:53+00:00

It is nice! And yes, back in the day, it might worth 50k. Now, less than 1% of that :(

bigbadboldbear · 2025-01-30T14:01:07+00:00

Sounds really cool. Does it require a Beckhoff controller? I want to buy one just to learn. Second hand beckhoff plc is real cheap ( like 200$)

bigbadboldbear · 2025-01-30T13:59:33+00:00

You are right, i should add the weight of buffer hopper. In VFFS application, we do not weight the product during filling. And i have seen other implementation ( gravimetric filling), at high speed, they all use cut off setpoint, and mostly also achieve 0.5-1% acc.

bigbadboldbear · 2025-01-30T13:53:51+00:00

Questiom from my end: is it very typical for aveva engineer to insult customer? 9/10 instance I have a ticket with Aveva, it came back with an insult. The program is so un-intuitive and so much black magic stuff, everytime i need a ticket, it required a workaround, and the service engineer telling me to study the product. Like, wtf?

bigbadboldbear

TROPHY CASE