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Revolution Pi – Industrial PC Based on Raspberry Pi

revolution.kunbus.com

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Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#51

Post by Munkum »

l1k wrote: post #37
Munkum wrote: post #31

Earlier quoted context omitted.

Can these be programmed by any of the 61131-3 languages?

Yes, with appropriate software. logi.CAD (an IEC 61131-3 automation platform) is pre-installed as a demo version and license keys are available at the online shop for a few bucks. But noone is forcing you to use a specific software. You can use Python or even Bash. The input and output values are stored in a process image by an open source kernel driver (piControl) and you can access the process image through a char…

How does it benchmark against other modern PLCs? Could you give a ballpark figure for the scan time of a 10 robot cell for example?

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#53

Post by l1k »

01572 wrote: post #50

What if the user wants to run a different OS besides Linux? Seems like the only option is Linux? No Plan9, BSD, etc.?

Anything that boots on a Raspberry Pi should also work on the Revolution Pi, e.g. FreeBSD:

https://wiki.freebsd.org/FreeBSD/arm/Raspberry%20Pi

It's just that we haven't tested it yet ourselves. Minimal adjustments may be necessary due to a few small differences between the standard RasPi and the RasPi Compute Module used in the Revolution Pi, e.g. the Compute Module lacks the on-board BCM43438 WiFi that's present on the standard RasPi 3.

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#54

Post by tyingq »

jkbbwr wrote: post #52

Why is it 200 GBP? If it is a RPi3 compute board which costs only 25 GBP why the insane markup?

The RPI compute module is the thing that looks like a memory dimm, with no ports. It's not useful by itself.

The purported value add is that the product includes a backplane, ports, power supply, and enclosure that are suitable for use in an industrial setting (wide operating temperature range, shock/vibration, etc).

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#55

Post by chillingeffect »

l1k wrote: post #13

Hi there. I'm an engineer on the Revolution Pi team. AMA.

I'm always looking for LabVIEW alternatives... is one of your cards an analog input module? How else to get 10-20 analog inputs? And is 10kHz sampling reasonable? What's the highest practical Fs? Thank you/danke!

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#56

Post by l1k »

chillingeffect wrote: post #55
l1k wrote: post #13

Hi there. I'm an engineer on the Revolution Pi team. AMA.

I'm always looking for LabVIEW alternatives... is one of your cards an analog input module? How else to get 10-20 analog inputs? And is 10kHz sampling reasonable? What's the highest practical Fs? Thank you/danke!

An AIO module is coming next month, but I'm not sure about the exact specs. I've just called the project manager, he promised to come here in a bit and answer open questions such as this one.

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#57

Post by l1k »

Munkum wrote: post #51
l1k wrote: post #37

Earlier quoted context omitted.

Yes, with appropriate software. logi.CAD (an IEC 61131-3 automation platform) is pre-installed as a demo version and license keys are available at the online shop for a few bucks. But noone is forcing you to use a specific software. You can use Python or even Bash. The input and output values are stored in a process image by an open source kernel driver (piControl) and you can access the process image through a char…

How does it benchmark against other modern PLCs? Could you give a ballpark figure for the scan time of a 10 robot cell for example?

I'm not sure if the question relates to motion control of robots, human-robot collaboration safety or something else entirely.

If the question is about motion control of robots, our cycle time of 10-20 ms is probably too long as motion control usually requires If on the other hand the question is about human-robot collaboration safety, the product is likely unsuitable as this requires specially certified appliances.

If it's none of these two, it would be necessary to know more specifically what the setup is (fieldbus used, number of axes, etc) to come up with a realistic figure.

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#58

Post by learc83 »

posguy wrote: post #21
learc83 wrote: post #6

This would have been perfect for my last startup. Keeping those damn Pi's running when they were deployed across the country was a nightmare. The SD cards had around a 20% failure rate per year. Eventually I just started shipping each system with a backup SD card taped to the inside of the case.

Were you using decent microSDs? Was each mSD getting QC'ed? We benchmark every single mSD before deploying an SBC with it, and have switched to only using Evo+ 32GB cards as they pass our QC 3/5 of the time, which is much better than the other available brands. Also, mSD corruption means your using a mSD card with a bad controller. The mSD was bound to corrupt and was a low caliber card to start with, unless you are…

From my experience the failures were almost always caused by a power loss.

The obvious solution would have been to include a battery backup in the case.

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#59

Post by learc83 »

Seanny123 wrote: post #10
learc83 wrote: post #6

This would have been perfect for my last startup. Keeping those damn Pi's running when they were deployed across the country was a nightmare. The SD cards had around a 20% failure rate per year. Eventually I just started shipping each system with a backup SD card taped to the inside of the case.

What did your startup do that required that many Raspberry Pis?

The Pis were used in a 24 gym and tanning salon system. They ran a touchscreen for customer interaction, connected to a custom board I built that attached to the proprietary network tanning control systems use, and handled RFID access control.

It worked well, but tanning regulatory changes killed it.

Re: Revolution Pi – Industrial PC Based on Raspberry Pi

#60

Post by delinka »

l1k wrote: post #38
Theodores wrote: post #34

Earlier quoted context omitted.

When I first saw the product renders the box reminded me of some things packaged in cardboard. But actually that might not be such a bad idea for a Raspberry Pi type of computer in some applications. A lot can be done with printed cardboard for creating a fun case. A cardboard box version for the hobby developer targeting the 'pro' version could make development easier to get into.

The case is made of polycarbonate. Cardboard would be interesting from an environmental perspective, but likely wouldn't be able to withstand the harsh conditions prescribed by EN 61131-2 (low/high temperatures, damp air, vibrations/shock etc). We add a safety margin to those conditions, e.g. 61131-2 requires safe operation at 55 degrees Celsius, we test at 60 degrees. The products are used e.g. in automotive applica…

I think the intent is "give developers a cheaper system to get started with" and not putting a cardboard version into production environments.
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