k0ngo

12 ms·

1.
by k0ngo 10mo ago
I guess I shouldn’t be surprised, but still fun to see that they’re apparently using an ESP32 as management processor (without antenna, probably just RMII directly to the switch ASIC) Edit: there’s a RTL8201 10/100 PHY to the left of t
2.
by k0ngo 4y ago
Yeah, looks like it :( I read out the patch data from two LPC55S69 I have at hand, and... MCU Date Code: 2019-07-20: 11/16 slots used 2019-11-05: 14/16 slots used
3.
by k0ngo 4y ago
Why can't NXP use the ROM patch mechanism (which was the cause of the previous vulnerability) to fix this? Was that all in vain?
4.
by k0ngo 5y ago
This is very similar to the OtterCast, which is an open source and open hardware Chromecast replacement. Overview: https://cast.otter.jetzt/ Sources: https://github.com/Ottercast There's also a version
5.
by k0ngo 8y ago
I'm a big fan of Fabrice Bellard, but there are other eNB and UE implementations that are fully open source, like OpenAirInterface[1] and srsLTE[2] [1] http://www.openairinterface.org [2] https://github.com/
6.
by k0ngo 8y ago
The article doesn't mention it, but I think Fabrice Bellards PoC [1], in which he generated a valid DVB-T and PAL/SECAM carriers using a graphics card (2005), is very elegant and highly related prior art. [1] https://be
7.
by k0ngo 9y ago
I'd expect scp to detect (using argv[0]) that it is called through a symlink and behave as rcp, not scp. This is how busybox is implemented, with many programs in one binary.
8.
by k0ngo 9y ago
I like the idea, but unfortunately PCIe isn't easy or cheap to implement on silicon. The problem is that you'd need the PHY, which is the high speed, analog interface, and that needs to be designed and tuned for the fab and proces
9.
by k0ngo 10y ago
Just as a software compilation flow is devided into preprocessing, compilation, assembly, and linking, a HDL flow is divided into synthesis, mapping, place and route, timing analysis and bitstream generation. RTL is the output of the synthe
10.
by k0ngo 10y ago
> On a different note, why is that (as far as non-expert me knows) that nice mics often have eq settings? Is this not a blatant layer violation? The low-frequency/subsonic content that this switch will remove often consists of wind
11.
by k0ngo 10y ago
This. It is also important to note that you may interrupt the service of other people's handsets even if your BTS doesn't allow them to connect, just by operating your SDR with an insufficient clock reference [1]. The handset will
12.
by k0ngo 12y ago
Yes, Point will perform all processing in the device and only send events with time stamps, as well as plain sensor readings for temperature/humidity/etc. It should be easy to verify by looking at the outbound bandwidth. Limiting
13.
by k0ngo 12y ago
If the power goes out or the router gets funky, most internet connected solutions would go offline anyway. But, being battery powered, Point would at least still be active and keep track of things. The fact that the device has lost it'
14.
by k0ngo 12y ago
I wouldn't call it hubris when we're saying that we know of these aspects, consider them our most important design constraints and do our very best to address them. Not being a native English speaker, it perhaps didn't come t
15.
by k0ngo 12y ago
That would require breaking the firmware encryption and signing schemes of multiple physically isolated processors, and even then it would be limited by the power budget, meaning transmitting audio data would drain the batteries very quickl
16.
by k0ngo 12y ago
Yep, the sound analysis is done on the device. We're working with IFTTT and others on integration, and there'll be an open API as well.
17.
by k0ngo 12y ago
We're using plain batteries and wifi to avoid using cables, thus making it much easier and elegant to install. That also means the device is completely self-contained, so you don't need any base stations or gateways to connect it
18.
by k0ngo 12y ago
The device is configured wirelessly using the smartphone app. It'll queue the events and measurements if your wifi is down, but I see that it will be hard for you to use if you always turn your wifi off when you are away.
19.
by k0ngo 12y ago
Form engineer here. We're not planning on shipping our firmware signing keys along with our product like Belkin did. Jokes aside, security, integrity and trust are our very top priorities. The hardware is designed in a way that should
20.
by k0ngo 12y ago
Is it just me, or isn't "BareMetal OS" an oxymoron? I guess it sounds cool, but taking an established term and use it as a name for the exactly opposite seems confusing to me. Please be responsible when choosing names for you
21.
by k0ngo 13y ago
The good news are that CERN has adopted KiCAD for it's open hardware platform and are actively developing it, adding some cool features which may make it more on par with commercial tools: http://www.ohwr.org/projects&#