l1k

11 ms·

61.
by l1k 8y ago
--user-agent "" --no-mtime
62.
by l1k 8y ago
Ok, done.
63.
by l1k 8y ago
Their competitor, Libre Computer, has mused that given their investment in the graphics stack, they might be headed in the GPGPU / AI direction. Think Raspberry Pis that you can cluster together for deep learning, or individual boards
64.
Torvalds: Standards need to be questioned(lkml.org)
223 points by l1k 8y ago|172 comments
65.
Microsoft has been talking about buying GitHub(businessinsider.de)
7 points by l1k 8y ago|5 comments
66.
by l1k 9y ago
It's worse, Raspbian is compiled for armv6 to also support the BCM2835 (Raspberry Pi 1). Here's a performance comparison between a modern 64-bit armv8 Linux on a Le Potato SBC versus armv6 Raspbian on the Raspberry Pi 3: https:&#
67.
by l1k 9y ago
Please note it's "Apple Inc." without a comma.
68.
by l1k 9y ago
Updates to Raspbian packages can be installed via apt-get as usual. The same goes for packages specific to the Revolution Pi, those are made available through a separate apt repo: https://packages.revolutionpi.de/dists/
69.
by l1k 9y ago
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
70.
by l1k 9y ago
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.
71.
by l1k 9y ago
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 a
72.
by l1k 9y ago
Traditional German manufacturers scrambling to get their foot into IoT, but also various international companies. The RevPi modules pop up at places you can't imagine. Before long there's going to be Linux in every electric cabine
73.
by l1k 9y ago
That's the requirement prescribed by EN 61131-2. We test with 60°C, so an additional safety margin of 5°C.
74.
by l1k 9y ago
Both the hardware (base board schematics) as well as the software are open source. Let's say Kunbus goes down the drain and you hit an issue. Best case someone in the community has already fixed it. Worst case you'll have to hire
75.
by l1k 9y ago
We use the Raspberry Pi Compute Module, i.e. a special, stripped-down version of the Raspberry Pi which fits on a 200 pin SO-DIMM module. This version does not use an SD card but has a 4 GByte eMMC on-board. (It would be possible to use an
76.
by l1k 9y ago
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, vibratio
77.
by l1k 9y ago
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
78.
by l1k 9y ago
There's a patch set for the kernel called PREEMPT_RT: https://wiki.linuxfoundation.org/realtime/start It contains patches to get latencies down and touches numerous subsystems of the kernel. Most importantly, inte
79.
by l1k 9y ago
A mini HDMI port is on the top of the RevPi Core and you can attach any display that you would normally use on a Raspberry Pi. There are some displays available from 3rd parties which are suitable for mounting on top hat rails. The CSI and
80.
by l1k 9y ago
The I/O modules themselves have 2 pin headers with 14 pins each. The pin headers receive adapters with wire terminals. The adapters are included. The German I/O module page has an animation which shows this in detail, it seems the
81.
by l1k 9y ago
1. There's a Photoshop wiz on the team. I'm not aware of any colleagues with chicken, must be stock photos then. The crazy stuff shown on expo photos is real though (snack lottery, "occupied" booth etc). 2. I think that
82.
by l1k 9y ago
When all 4 cores are under load, the BCM2837 on the Raspberry Pi 3 will rapidly reduce the clock rate after about 60 seconds (from 1.2 GHz to 600 MHz, or even 300 MHz if the core temperature exceeds 85 degrees Celsius). Cooling is required
83.
by l1k 9y ago
Hi there. I'm an engineer on the Revolution Pi team. AMA.
84.
by l1k 9y ago
This was answered in the German Revolution Pi forum a few months back: https://revolution.kunbus.de/forum/viewtopic.php?f=8&t=6&p=1... The TL;DR is that the products have gone through all the testing required b
85.
by l1k 9y ago
That is mostly correct. A few corrections/additions: * It's either the Compute Module 3 or the older (cheaper, slower) Compute Module 1. * The schematics of the base board in the RevPi Core are open source: https://revo
86.
by l1k 10y ago
Thanks! The FileVault2 driver for Linux that you couldn't find is probably this one: https://github.com/libyal/libfvde/wiki It's experimental though. Better back up your data. I'd recommend to creat
87.
by l1k 10y ago
If nothing's plugged in then many devices can indeed be suspended in some way, either by putting them in PCI power state D3hot or by cutting power if the platform supports it. Plug events are then signaled e.g. by an ACPI GPE (general
88.
by l1k 10y ago
That is correct. The Thunderbolt controller has two DisplayPort sink ports which are wired to the GPU, in addition to the PCIe 3.0 4x interface which goes to a root port in the CPU. So to actually max out the 40 Gbit/s, you need to dri
89.
by l1k 10y ago
For a Linux driver it wouldn't be acceptable to compromise functionality like this as it's expected to work equally well on big iron as on laptops. So we have to tweak a lot more to achieve the same level of battery life.
90.
by l1k 10y ago
No that is not mythology, Apple specifically targeted developers in the past, such as in this 2002 commercial featuring a stereotypical grey-bearded UNIX guru: https://www.youtube.com/watch?v=O4AgFhIm1qs Quote: "It&#x2

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