On 2020-03-17 01:30, Robert Murphy wrote:
Raf,
Get a 7i76e and you are done.
Don't scratch your head and touch sensitive components.
That's just one possibility which depends on how much hair and size you
have. Just walking around certain kind of floors you generate static
electricity that can kill modern electronics very fast. I have yet to
see technicians in IT using anti-static wrist strap.I keep two in my
toolbox.
What you have said is technically and correct and in all the books,it's
even what the teach in tertiary educations when you're working towards
your certs. it's not exactly what I've seen in the field. That's was
day in and day out repair EFTPOS terminals, mainboards of pokies and
other sundry products by a certain large supplier of EFTPOS equipment.
When you use a not so common (?) acronym it's nice to spell it out.
Even with the latest exercise equipment with all the bells & whistles
the biggest issues are failure of output drivers due to lack of
mechanical maintenance by owners.
Not that I'm advocating working with electronic equipment in a vinyl one
piece jump suit with balloons attached.
I'm not too sure of the certification status of the RPi for industrial
use. Where as there is a variant of the BBB that is.
It depends on what temperature range components you use and how you
build the boards.
https://thepihut.com/products/italtronic-din-rail-raspberry-pi-model-b-plus-case
https://revolution.kunbus.com/revolution-pi-series/ pay attention to
the diagram on the sides. 12-24V DC. And QR code to find additional
information easily. It looks to be very good product IMO, all based on
open source. [1]
[1] And I was told earlier to get lost after I commented on LinuxCNC
architecture issues.
DIN is a German standard I'm aware of since I mixed neutral power line
with hot 220V. I built a simple one transistor receiver and used a
neutral wire as an antenna. That idea (?) came from something I was
reading in the 70s if I remember correctly. One day I connected my
detector to "antenna" on the wrong side ;-(
Anybody used oscilloscope to troubleshoot switching power supplies? Not
modern battery powered scope mind you. That was fun.
Since then I touch unknown circuits with one hand but only if I have
good shoes on. We have protective gloves now but that was not available
in commie paradise.
Building radio detector was one step in my way to learn electronics
trade. Problem is that stupid plug standards in continental EU allow you
to plug single phase power cord two ways.
American standard for power plugs is way better but I don't recommend to
use N for an antenna unless it's an emergency and the whole nation is in
kernel panic mode. Oh wait, we are.
--
Rafael Skodlar
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