by arsalanb on 4/17/22, 12:58 PM with 140 comments
by dan000892 on 4/18/22, 11:38 PM
(The UART provided a root shell and enough power to “boot” the ATtiny which simply waited a few seconds and then ran some commands to initiate a reverse shell to a server under our control every time the device was powered on. Thanks to this tape and the device’s tool-less case (and convenient unpopulated header with space around it), it was enlightening how trivially easy it’d be to develop and deploy such an implant to an operating device (with the caveat that I wouldn’t consider the connection robust enough to survive transport).
It’s also useful to connect SMD EEPROMs to unpopulated/desoldered pads for testing without installing a socket.
by 01100011 on 4/18/22, 11:27 PM
As a human, I'm appalled at their environmental track record but as an engineer, wow they really do so many things so well.
by nomel on 4/18/22, 10:46 PM
Insulation resistance: 3.4 x 1014 ohms/square
Contact resistance: < 0.3 ohms
Minimum gap: 0.4mm
Minimum overlay area: 3.2mm^2
by ghoul2 on 4/19/22, 10:24 AM
I expected a flex cable connecting the lcd to the PCB but couldn't find one. I 'knew' rubber was an insulator, so no matter what that rubbery thing was (I guessed it was simply a spacer) it wasn't the connection between the two.
Didn't learn about the existence of z-tape for another decade or so and immediately the light bulb in my brain flashed, solving a childhood mystery.
by loxias on 4/18/22, 11:04 PM
by mNovak on 4/19/22, 5:26 AM
Unfortunately it didn't make reliable contact for the chip pins unless you were constantly pushing down on it. As I recall the datasheet states as much. That seems like a solvable material science problem, but alas perhaps not valuable enough.
by bpye on 4/19/22, 2:29 AM
by hedgehog on 4/18/22, 11:21 PM
by mensetmanusman on 4/18/22, 11:02 PM
by raldi on 4/18/22, 11:19 PM
by whalesalad on 4/19/22, 1:03 PM
All kinds of stuff like this can be explored with a pretty decent UI.
by robomartin on 4/19/22, 6:17 AM
We use specialized thermally conductive tapes in a range >= 1 W/mK. I am always looking for interesting developments in this domain.
by natch on 4/21/22, 10:33 PM
If the link doesn't work (lots of tokens in there) try searching for "9703 3M tape conductive" as a starting point.
https://www.digikey.com/en/products/detail/3m/9703-4-X36YD/6...
by n4bz0r on 4/19/22, 1:12 AM
For instance, many old Playstation 3 systems go faulty because of the poor quality solder on the CPU/GPU that tends to crack over time. Being a normie, it's really hard to fix something like that at home. But this tape seems like it could save the day.
by AceJohnny2 on 4/18/22, 11:12 PM
by itsyaboi on 4/19/22, 1:20 AM
by alkonaut on 4/19/22, 9:30 AM
I can see uses for all, but how you'd apply it would certainly differ if depending on which one is Z....
by Rebelgecko on 4/19/22, 3:08 AM
by Animats on 4/19/22, 2:42 AM
by csours on 4/19/22, 1:11 AM