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by jsobota
Mon Oct 15, 2018 1:45 pm
Forum: Automation, sensing and robotics
Topic: Overall equipment efficiency monitoring
Replies: 5
Views: 1246

Re: Overall equipment efficiency monitoring

Hi Sir. Im new to rasp pi and im planning on working on a project about production monitoring. Can I ask yout help regarding this matter. It would be great. Thanks In order to get help, you need to ask clear and concise questions. Production Monitoring is too broad a topic to ask for help on. Every...
by jsobota
Mon Aug 28, 2017 6:26 am
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 8608

Re: Houseboat home automation / surveillance system

Simply ingenious! Thanks for sharing all the information.

Best regards,
Jaroslav
by jsobota
Fri Aug 25, 2017 8:20 am
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 8608

Re: Houseboat home automation / surveillance system

Hi Lomax,
I'm just wondering about your mention of multiple cameras. Are you planning to use multiple Raspberry Pi? AFAIK there is only one CSI port on the Pi to connect the RPi Camera...

In any case, thanks for sharing your amazing project!

Best regards,
Jaroslav
by jsobota
Fri Aug 18, 2017 11:22 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 8608

Re: Anyone here with experience of the Monarco Hat?

Hi all, I'm a bit late for the party, sorry for that. Thanks @Lomax for this excellent thread. Love your project regardless of what hardware and software you decide to use in the end. Apart from SPI-0, UART, I2C-0 and I2C-1, the only GPIO pins occupied by the Monarco HAT are GPIO20, GPIO21 and GPIO2...
by jsobota
Fri May 27, 2016 12:09 pm
Forum: Automation, sensing and robotics
Topic: Monarco HAT - analog and digital I/O, RS-485, 1-Wire, RTC...
Replies: 1
Views: 1322

Monarco HAT - analog and digital I/O, RS-485, 1-Wire, RTC...

Hi everyone, our HAT for industrial automation just reached 40% funding at Indiegogo. 4x DI, 4x DO, 2x AI, 2x AO, RS-485, 1-Wire, RTC, 24V power supply Do not miss the chance to get it at Indiegogo special rates ;) https://indiegogo.com/at/monarcohat https://www.rexcontrols.cz/media/galleries/homepa...
by jsobota
Sun Apr 10, 2016 12:15 am
Forum: General discussion
Topic: intergrating pi with siemens cpu
Replies: 3
Views: 1594

Re: intergrating pi with siemens cpu

You might be interested in this solution for connecting your RPi to Siemens PLCs:
https://www.rexcontrols.com/product/rex ... spberry-pi
by jsobota
Tue Nov 17, 2015 12:20 am
Forum: Automation, sensing and robotics
Topic: Overall equipment efficiency monitoring
Replies: 5
Views: 1246

Re: Overall equipment efficiency monitoring

I suppose there is some PLC controlling each machine. You might be able to read its status via some communication line (Modbus TCP, RS-485, S7 communication, ...). Have a look at REX Control System for Raspberry Pi - not only will you monitor the machine but also you will be able to report the machi...
by jsobota
Mon Apr 13, 2015 4:45 pm
Forum: Troubleshooting
Topic: Overlay for MCP79410 RTC
Replies: 0
Views: 640

Overlay for MCP79410 RTC

I am trying to make the MCP79410 RTC chip working in Raspbian. The UniPi extension board is using this chip. I have an overlay file which I am able to compile (see below). Afterwards I can access the RTC data via hwclock when I add to /boot/config.txt: dtoverlay=mcp7941x-rtc However, udev is not rec...
by jsobota
Mon Aug 18, 2014 7:35 pm
Forum: Automation, sensing and robotics
Topic: Thermostat controlled remote plugs project - help needed
Replies: 13
Views: 3708

Re: Thermostat controlled remote plugs project - help needed

I’m able to get both parts working individually, but the problem is that both use GPIO4. I’ve been trying to find a way to move one of them to another GPIO pin, but haven’t been successful yet. It seems that GPIO4 needs to be used for the temperature sensor as it’s the only one that works with 1 wi...
by jsobota
Tue Aug 05, 2014 1:06 pm
Forum: Automation, sensing and robotics
Topic: Web-based HMI for smartphone/tablet/desktop PC
Replies: 2
Views: 2880

Re: Web-based HMI for smartphone/tablet/desktop PC

Thanks!
A sequel to the tutorial on creating HMI in Inkscape is available at https://www.rexcontrols.com/articles/fi ... on-project.
by jsobota
Mon Jul 28, 2014 4:59 pm
Forum: Automation, sensing and robotics
Topic: Web-based HMI for smartphone/tablet/desktop PC
Replies: 2
Views: 2880

Web-based HMI for smartphone/tablet/desktop PC

Beta version of the RexHMI extension for Inkscape was released and testers are wanted... This extension intended for use with the REX Control System is completely free and allows you to design HMI screen in Inkscape and then export it as an animated webpage reacting to real-world data. That means yo...
by jsobota
Mon Jul 14, 2014 11:08 am
Forum: Other projects
Topic: Turn Raspberry Pi into a P.L.C (Programable Logic Controller) Advanced
Replies: 225
Views: 238234

Re: Turn Raspberry Pi into a P.L.C (Programable Logic Contro

Sorry to interrupt this thread, but in the meantime you might be interested in the REX Control System, which is a competitor of the CoDeSys system. See what you can do with REX on your RasPi:
http://www.rexcontrols.com/articles-category/tutorials
by jsobota
Thu Jul 10, 2014 2:29 pm
Forum: Automation, sensing and robotics
Topic: Piface + sensors = piface in a breadboard
Replies: 4
Views: 1150

Re: Piface + sensors = piface in a breadboard

PiFace Digital is connected to RPi via SPI so it uses only a few pins (MOSI, MISO, SCLK, GND, 3.3V, 5V). Using e.g. GPIO#4 for 1-Wire is possible, you just need to solder the wires to the unused pins on PiFace.
by jsobota
Tue Jun 24, 2014 8:04 am
Forum: Automation, sensing and robotics
Topic: Pool automation
Replies: 6
Views: 2740

Re: Pool automation

You might be interested in the following tutorial on pool automation:
http://www.rexcontrols.com/articles/ras ... on-project
by jsobota
Sat Jun 07, 2014 7:37 pm
Forum: Automation, sensing and robotics
Topic: plc automation
Replies: 23
Views: 11127

Re: plc automation

If you disable SPI, I2C and system console on serial port, you can use up to 17 GPIO pins on your RPi. If that's not enough, one option is to plug in the Arduino. With MEGA2560 you get additional 54 GPIOs. And 16 analog inputs on top of that.
by jsobota
Mon May 26, 2014 4:04 pm
Forum: Automation, sensing and robotics
Topic: plc automation
Replies: 23
Views: 11127

Re: plc automation

I am afraid I do not understand your question. Have you succeeded in establishing the Modbus connection? Please describe the current state of your project and describe your goal with the GPIO pins in more detail.
by jsobota
Mon May 12, 2014 8:14 am
Forum: Automation, sensing and robotics
Topic: plc automation
Replies: 23
Views: 11127

Re: plc automation

You have to use the serial line /dev/ttyAMA0 exclusively for Modbus communication. By default Raspbian uses the Raspberry Pi serial port (GPIO14-GPIO15) to provide boot-up information and login prompt. You have to disable it, otherwise the Modbus communication would be disturbed and the 2 communicat...
by jsobota
Sat May 10, 2014 2:18 pm
Forum: General discussion
Topic: A "cave" environmental chamber, for science!
Replies: 12
Views: 1955

Re: A "cave" environmental chamber, for science!

Guys this is totally awesome! If I could help you with the control and data logging, just let me know. I'm also at the university, specialized in control systems and algorithms. I've written some code to turn RPi and Arduino into a "professional" control and logging device and I have experience in c...
by jsobota
Sat May 10, 2014 9:29 am
Forum: Automation, sensing and robotics
Topic: plc automation
Replies: 23
Views: 11127

Re: plc automation

You can use both serial (Modbus RTU) or ethernet (Modbus TCP) connection. If you want to use the native serial port of RPi (/dev/ttyAMA0), you have to disable the console input/output though. Keep in mind that you will probably need a level converter between RPi and S7. You might also use a USB to R...
by jsobota
Tue May 06, 2014 8:22 pm
Forum: Automation, sensing and robotics
Topic: plc automation
Replies: 23
Views: 11127

Re: plc automation

No problem with that, you can use REX just for monitoring. As long as you only read Modbus registers, you can gather data from the external PLC. And you get real-time running graphs etc. If you want to exchange data in both directions, it is also possible. You just have to program your S7 to act as ...
by jsobota
Fri May 02, 2014 6:36 am
Forum: Automation, sensing and robotics
Topic: plc automation
Replies: 23
Views: 11127

Re: plc automation

You might consider using the REX Control System. Once installed on Raspberry, you can communicate over Modbus with any device.
http://www.rexcontrols.com/rex-control- ... spberry-pi
A tutorial is part of the manual for Modbus.
by jsobota
Sat Mar 22, 2014 11:54 pm
Forum: Automation, sensing and robotics
Topic: Pi to Arduino due communication for a robot(help!)
Replies: 6
Views: 2573

Re: Pi to Arduino due communication for a robot(help!)

Yes, RasPi and Arduino are a perfect couple. They can communicate via USB cable or I2C bus. I have no experience with Arduino DUE, but RasPi and UNO work great:
http://www.rexcontrols.com/articles/rex ... ts-arduino
by jsobota
Thu Feb 13, 2014 8:12 am
Forum: Automation, sensing and robotics
Topic: Arduino to Raspberry Pi
Replies: 5
Views: 1115

Re: Arduino to Raspberry Pi

Vasek42 wrote:What kind of RC Receiver? I have cheap 433 receiver and cheap nRF24l01 connected directly to Raspberry Pi with no Arduino help and it was not hard to connect (electronics newbie myself).
I would like to know more about your solution. Is there any thread or blog with details?
by jsobota
Thu Feb 13, 2014 8:05 am
Forum: Automation, sensing and robotics
Topic: Arduino to Raspberry Pi
Replies: 5
Views: 1115

Re: Arduino to Raspberry Pi

If you are trying to avoid serial communication just because of the GPIO pins and cabling, then use the USB cable to connect to Arduino UNO, Nano or Mega2560. Your RPi will see any of these as a standard serial port and you can exchange data easily. However, if you are trying to avoid serial communi...
by jsobota
Thu Feb 06, 2014 4:53 pm
Forum: General discussion
Topic: Question about using the RPi with a relay.
Replies: 73
Views: 71798

Re: Question about using the RPi with a relay.

I just want to let you know that I have the very same 4-channel relay board, JD-VCC nad VCC jumpered together, powered directly from the 5V pin from my RPi and I am able to switch on all the relays at once. I already switched the relays on and off thousand times and nothing bad happened. The current...

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