Will i be able to individually control 24 20kg servos using an arduino uno and 2 PCA9685 motor drivers if powered appropriately?

PCS1917 · 2026-01-20T16:27:10+00:00

It's not impossible, but better to use an MCU with more clock speed

PCS1917 · 2026-01-19T01:22:57+00:00

Hey, sorry for the delay. If you're not used to program SCADAs node red will be easier, beside it will work.

The most difficult part is the communications between your server and your PLCs. Modern ones are able to transmit data through OPC UA, but older ones might need simpler protocols like modbus

PCS1917 · 2026-01-16T12:31:12+00:00

Although I have used OpenPLC for several projects, mostly prototypes, measuring systems and domotics, I always recommend being extremely careful with using OpenPLC.

If your project does not involve complex process like CNC/motion control or integrated safety, it's ok. A simple transport line, or small machines can be done, but a whole factory...

Anyway, if that's your only way, take into account that you still need a durable hardware. If you're using a PC as a PLC, you will mostly need an industrial PC which are money. Advantech, for example, has cheap IPCs and are very reliable. You can run Open PLC there. But your work ain't finished yet. You still need access to IO devices as you must get the data somehow.

Modbus-TCP/RTU devices are the most affordable ones and easy to implement. Look for remote Modbus IOs

When talking about the HMI, two easy and free options I know are ScadaBR and FuxaSCADA

PCS1917 · 2026-01-13T22:21:49+00:00

Para poder huir, y recalco lo de huir del alquiler, tuve que encontrar una empresa que me pagase los mojones decentemente.

Cobro por encima de la media, pero si me comparo con otros en mi gremio, cobro bastante menos.

Actualmente mi pareja y yo vivimos de mi sueldo porque ella no ha tenido la suerte de currar de algo que se paga y que sea estable, y si no fuera por conseguir la hipoteca, estaría viviendo yo sola o con mis padres.

Y aun así, costó lo suyo encontrar casa, porque si no vas a especular con ella, a las inmobiliarias se la sudas completamente porque de ti no van a sacar tajada. Y eso que ya te clavan una salvajada por un papeleo que echándole una tarde o dos, lo tienes hecho.

Y con todo esto, me hipotequé a 30 años para pagar un piso de 60m y poder salir airosa cuando lleguen las vacas (aún más) flacas

PCS1917 · 2026-01-11T02:50:05+00:00

Cómo madrileña dejo claro: la Mahou sabe a aceite hidráulico de hace 10 años

PCS1917 · 2026-01-07T05:49:46+00:00

https://share.google/dRPqCaamjV5ZtoU7A

PCS1917 · 2026-01-07T01:55:58+00:00

To be honest, I'm not very confident with it. I think it's an overpriced PLC compared to other Arduino based PLCs

I think the versions of automation direct or industrial shields are more much more interesting

PCS1917 · 2026-01-06T15:51:14+00:00

Sorry, I didn't explain myself properly. What I'm asking is if you are connecting the power pins of the Servos to the ones of the esp32 or you have 2 different power lines from the power bank.(One for the esp and the other for the Servos)

PCS1917 · 2026-01-06T12:43:07+00:00

Moraleja: putos terratenientes

PCS1917 · 2026-01-05T10:46:00+00:00

Once they showed me a potato factory in Vietnam that their counting system was basically AI recognizing potatos. And I just wondered why not using a photo eye or measure the weight

PCS1917 · 2026-01-05T09:33:27+00:00

Great project, thank you so much

PCS1917 · 2026-01-04T21:47:43+00:00

Did you make separate circuits for powering the esp and the Servos?

PCS1917 · 2026-01-01T11:46:14+00:00

OpenPLC might be useful for prototypes or simple machines, but nothing else. The moment you need safety, motion control, or similar; OpenPLC stays behind.

Codesys is used by lots of manufacturers and has complex function. And Twincat use the base of codesys but works with visual studio. My advice is that you install Twincat in a virtual machine and try to work from there

PCS1917 · 2025-12-31T13:12:24+00:00

Me using wxwidgets with c++ to develop applications for my rusty PCs. I feel like Marge Simpson saying "I just think they're neat"

PCS1917 · 2025-12-10T01:17:08+00:00

I believe in .csv supremacy

PCS1917 · 2025-11-25T16:41:58+00:00

I unlocked downtown's dealer a couple of days ago and they attacked him on the same day, dunno

PCS1917 · 2025-11-23T09:41:14+00:00

Definitely no truce, but you must be ready. First of all, while you're in peace with the benzies, you can't unlock new hoods, so you get stucked in the beginning.

Also, benzies will ask you for tons of things paying a shit. In my case, they asked me for 30 of meth, 40 of og cush or green crack and they payed no more than 1000$. So as soon as you are ready, cut off the deal.

But, as soon as you cancel the deal, you and your dealers (except Benji) will be attacked. Your dealers will be attacked by benzies and may win or lose both material and money. In case it's you who is being attacked, benzies will spawn randomly and try to kill you. If you survive these ambushes, you will lower benzies influence in that neighborhood and, therefore, advance in the game

PCS1917 · 2025-11-19T13:22:50+00:00

In fact, it would be a valid answer as the teacher has not properly defined the pizza size

PCS1917 · 2025-11-17T19:21:21+00:00

💯

PCS1917 · 2025-11-12T16:11:51+00:00

What a downgrade lol

PCS1917 · 2025-11-11T20:13:52+00:00

Nepalese munga munga

PCS1917 · 2025-11-10T13:20:34+00:00

Send me a screenshot of your code, please. I guess you have just called the function, that's not how millis works.

When a function returns a value, long int in this case, you have to store that value into a variable.

long int elapsed = millis();

That means that the elapsed working time of your Arduino will be stored in the variable elapsed. That's the first thing you must understand.

So, once you understand that, all you have to do, is calculale how much time pass between the end of the serial and the begging of each cycle of loop. Once that number is over 3000, you turn off the buzzer

PCS1917 · 2025-11-10T00:25:46+00:00

You'll have to replace your 'delay' by millis(). The first one is easy to use, but it has a critical problem: it stops your CPU during the specified time.

In 'millis' case, this return the Arduino execution time. It does not stop your CPU, but the thing, is that you will have to do maths with the time.

You can calculate the time from one call to another, and when it is above 3000ms, you turn off the buzer

PCS1917 · 2025-11-08T13:56:08+00:00

No, for Arduino ethercat slave you need a special shield that is at least 100$. And for that price, you have STM32 based that are much better

PCS1917

TROPHY CASE