jmpe

9 ms·

31.
by jmpe 12y ago
That would work, but it's more elegant to dig into the bootloader. As long as you don't have the pw you'd have to repeat this approach. Suppose you manage to put your own system on the SD, the bootloader would still have the
32.
KickSat watchdog resets, Sprites probably won't eject(kickstarter.com)
1 points by jmpe 12y ago|0 comments
33.
by jmpe 12y ago
Yes. When scaling down semiconductors your oxide shows weird behavior. In transistors this was one of the crisis that hindered miniaturisation, there were alternatives (like exotic high-k dielectrics) but semi corps tend to steer away from
34.
by jmpe 12y ago
There's a very good documentary about bacteriophages: http://www.youtube.com/watch?v=U6sZ7E9Hh-Y It's history is muddied, mainly because of money & politics.
35.
Death By Utopia – the John B. Calhoun experiments(mostlyodd.com)
6 points by jmpe 12y ago|0 comments
36.
Lix – small 3D printing pen(lixpen.com)
4 points by jmpe 12y ago|0 comments
37.
by jmpe 12y ago
The URL sounded familiar... now I know why. ChaN is the person behind FatFs, an incredibly good embedded File System module. Currently using it on ChibiOS and very happy with it.
38.
by jmpe 12y ago
Legal situation?!? You're creating a matched impedance point in space. RF energy harvesting is a bit of a hot topic, there are a number of modules on the market atm. Just search for it on mouser or farnell to get started. Thanks btw fo
39.
by jmpe 12y ago
I remember reading somewhere that this practice still exists today. That jets dump their payload in the sea before landing. As I recall it was a landing area in/around Italy during the Iraq conflict. Makes sense if you think about it,
40.
by jmpe 12y ago
I'm mostly into hardware, these two provide me with top content: Ben Krasnow, physics for the underfunded: http://youtube.com/user/bkraz333 Ham Radio Now, lots of SDR talk and good content: http://youtu
41.
Sending and Authenticating Messages with Elliptic Curves(jeremykun.com)
1 points by jmpe 12y ago|0 comments
42.
by jmpe 13y ago
Found this little tidbit while reading an article about the Cal. drought. Additional info on the Sensor network SNOTEL: http://en.wikipedia.org/wiki/SNOTEL And meteor burst communication: http://en.wikipedia
43.
Snow depth sensors bounce radio signals off meteors(wcc.nrcs.usda.gov)
2 points by jmpe 13y ago|1 comments
44.
by jmpe 13y ago
I changed the title to "Can [it be done]" because the article's title states it as fact even though its effectiveness is questioned. I'm aware that this deviates from HN guidelines but I don't want to submit clickba
45.
Can SQL Injection Fool Speed Traps and Clear Your Record?(hackaday.com)
1 points by jmpe 13y ago|1 comments
46.
by jmpe 13y ago
You're seriously underestimating this issue. - rabbits/cane toads in Australia [0][1] - Japanese knotweed [2] - Tumbleweed (yep, not as native as Hollywood suggests) [3] - Algae [4] ... and the list goes on and on, here's a t
47.
by jmpe 13y ago
That makes sense. But regarding your last sentence: I'm not very fond of that risk analysis. Potentially introducing an alien aquatic micro-organism (that's what we hope to bring back, remember) into earth's system... No comp
48.
by jmpe 13y ago
"Dr. Tsou devised a way to capture comet particles and bring them back to Earth for NASA’s Stardust mission and has been suggesting a similar method for a spacecraft that would fly through Enceladus’ plumes and then return to Earth for
49.
by jmpe 13y ago
Not really off-topic: at 42:00 the setup shows a Novena prototype. They used a binder as case.
50.
by jmpe 13y ago
The CCC backside attack is here: https://www.youtube.com/watch?v=dtviiOJ-2hI It contains lots of info and technical details. Another one: https://www.youtube.com/watch?v=KVmpBPbGPsQ This is what an actual R
51.
by jmpe 13y ago
Currently on mobile, will update tomorrow. Start here: http://www.visual6502.org/ Somewhere in that site they detail the step by step process of decapping, delayering photographing and identifying the logic. There's al
52.
by jmpe 13y ago
In you want more: http://zeptobars.ru/en/ The nice thing is they decap old/common devices.
53.
by jmpe 13y ago
A lot of these places will hopefully not become tourist attractions, they exist because of - not despite of - lack of human activity.
54.
by jmpe 13y ago
Notice they use the GigaFLOPs metric, which is a (maximum) floating point measure. Bitcoin hashing (it's been a while for me) is compute intensive on integer math. For a good ratio of performance/power you'd want to look at a
55.
Japan’s Artistic Manhole Covers(thisiscolossal.com)
2 points by jmpe 13y ago|0 comments
56.
by jmpe 13y ago
The author should look into DTMF, they were quite popular in packet radio and you got a 1200 baud datarate. Haar Wavelet transform would probably be a lot less CPU-hungry than FFT. http://en.wikipedia.org/wiki/Dual-tone
57.
by jmpe 13y ago
Studies have shown that the most effective measure is to switch everything on, dropping the termination impedance, whilst taking production partly offline. I have a couple of links at the office, currently at home.
58.
by jmpe 13y ago
The link is the same as the one Google takes me to, but apparently they check the referrer. If you come from Google: no paywall.
59.
Cleaning Up Smoke with an Electrostatic Precipitator(hackaday.com)
2 points by jmpe 13y ago|0 comments
60.
by jmpe 13y ago
There are PCB design/layout rules that deal with BGA. I'm not saying it's a 100% guarantee, but (much like EMC/EMI design rules) there are a lot of solid pointers that remove 90% of the issues. The remaining 10% are (aga

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