BertoldVdb

5 ms·

1.
by BertoldVdb 10mo ago
It is an offline moving map with very fancy marker etc support. Seems a good choice for a hiking app?
2.
by BertoldVdb 11mo ago
To make a compliant ethernet signal from this you would need at least some sort of line driver/receiver as well.
3.
by BertoldVdb 11mo ago
Just put normal test pads next to the tag connect, a bit more spaced out. A bed of nails in the production line connects to that, the tag connect can be used for bench development.
4.
by BertoldVdb 11mo ago
We tried this long ago at a university, the cards we had were entirely invisible to the x-ray. I think the 'x-ray' table in the article works with IR cameras and illuminators under the table, and tablecloth that is slightly IR tra
5.
by BertoldVdb 11mo ago
Laser decapping will destroy the die, except if you have a rare package that does not mix glass in the epoxy. You could still compare the internal structure of the package and bonding, but the die itself is mostly destroyed.
6.
by BertoldVdb 11mo ago
A lot of low population density cellular backhaul runs over satellite. Two factor SMS or voice can be directly intercepted, assuming encryption is not used.
7.
by BertoldVdb 1y ago
A solar panel is like a normal silicon diode. The voltage over the cell goes up drastically with lower temperatures. In cold climates crowbars are usually added.
8.
by BertoldVdb 1y ago
This architecture is good for data path applications, but not really for control flow (eg, think how expensive a context switch would be)
9.
by BertoldVdb 1y ago
Usually yes, but it is not an EU-wide system. Contact your spectrum regulator and ask for what options are available for private 5G[1]. You can likely get a bit of spectrum in the 1.8GHz guard band, around 2.3GHz, or somewhere between 3.4-5
10.
by BertoldVdb 1y ago
In the Netherlands you can run private 4G in the 1.8GHz GSM guard band. For indoor use with 200mW or less no license is required.
11.
by BertoldVdb 2y ago
No, unless the Android is already rooted, it is not possible to send vendor HCI commands.
12.
by BertoldVdb 2y ago
A very far stretch: You have a ESP32 based Bluetooth dongle, that exposes its HCI interface to the host. You have already gained access to the host and can now load code to the dongle. Not really a vulnerability, and many types of bluetooth
13.
by BertoldVdb 2y ago
The people in these talks go quite a bit further than just BLE packet TX/RX (which you can do with the documentation on most chips). In theory this work allows implementing a totally different protocol.
14.
by BertoldVdb 2y ago
The interface to configure an eSIM is standardized, there is no need to use the proprietary app. You might even be able to configure it with the software included with the phone OS.
15.
by BertoldVdb 2y ago
There are many products like this, eg: https://shop.sysmocom.de/sysmoEUICC1-eUICC-for-consumer-eSIM... https://esim.me/
16.
by BertoldVdb 2y ago
I worked on this long ago, the main problem with the poor sound quality is that the self-mixing process is non-linear, a good approximation is squaring the output signal. To improve the quality you can pre-distort the output signal. Taking
17.
by BertoldVdb 2y ago
With a rate of 1.5%, paying the loan off might not be a smart move, as long as you don't mind not being fully debt free.
18.
by BertoldVdb 2y ago
How does the mercury get into the water?
19.
by BertoldVdb 2y ago
That functionality is absolutely non-trivial. There are a few WiFi cores (digital and RF) you can license but they are expensive and the analog part uses a lot of die area. If you look up die shots from the ESP chips, you see that the radio
20.
by BertoldVdb 2y ago
It's very unlikely IMHO. Both the RISC-V and the M33 are very tiny in die area, compared to for example the 512kB RAM, or even compared to a few bond-pads. Making a single core with two instruction decoders but a shared register file,
21.
by BertoldVdb 2y ago
If you can tolerate some level of false positives you can turn the CRL into a bloom filter and save quite a bit of storage.
22.
by BertoldVdb 2y ago
Marvell 88E6393X works in 'dumb/externally managed' mode without firmware. You can use it with Linux switchdev like the one in this article.
23.
by BertoldVdb 2y ago
While you could make an OpenFlow client that uses this switch chip as the data-plane, it might not be the best as most of the features you would use OpenFlow for would not be able to use the relatively limited hardware fast-path.
24.
by BertoldVdb 2y ago
Not really, if you use IPv4 BROADCAST the traffic will go to all machines. If you use multicast and IGMP support is turned on in the switch the data will only be forwarded to receivers that care about it.
25.
by BertoldVdb 2y ago
This device is not really suited, it is a high speed USB3.0 peripheral. You might be able to use it with the right software, but then you are just using the CPU in it.
26.
by BertoldVdb 2y ago
There is not much power needed to receive DisplayPort over USB (assuming you already can receive displayport signals or just route them to an external monitor). You just need to implement an USB billboard device (optional to make it work, b
27.
by BertoldVdb 2y ago
SSD prices fluctuate a lot. I recently bought 4TB SSDs for 209eu but they are more expensive now (SNV2S/4000G, QLC though)
28.
by BertoldVdb 2y ago
There are companies selling SLC SSDs (often using TLC or QLC flash but not using that mode) for industrial applications, for example Swissbit.
29.
by BertoldVdb 3y ago
I was able to use the rfkill command on a Dell and a Thinkpad with the hardware switch turned off. However I don't know how that was implemented internally, maybe the switch was not connected directly to the mini-pcie slot. I don'
30.
by BertoldVdb 3y ago
It usually is not, most cards will allow software unlocking even if the hardware switch is off. You can run 'rfkill unblock all' on a Linux system to test it.

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