Normally where people get burned is that their boards get put in a "condensing" environment even though everything is specified as "non-condensing". But that's not a design problem so much as a specifications issue. tl;dr Don't sweat it and just do your design.
Good luck. Then, depending on the actual skin resistance, due to air humidity, sweat etc, a certain voltage may result in a current that is or is not lethal. You may change the values in the above to your own estimates and compute the current value through the heart as a simple exercise in basic network theory, or run spice. Hand sweat consists mostly of water and trace amounts of urea, minerals and lactic acid.
sweat dallas tx, I would say that lactic acid is a moderate acid with a pka of approx. 3.5, but we are talking trace amounts in sweat. So, the clock offset won't meaningfully affect your receiver. So, I wouldn't sweat it; if you can get a 26.041 MHz oscillator, that's going to be more than good enough. However, there's also an easy way out here that only needs a much easier to get multiple: generate 40.0 kHz, 60.0 kHz, and a (77.5 - 40.0) kHz = 37.5 kHz Sweat Soldering is the optimum way to bond the board and the metal clad.
sweat dallas tx, Just solder paste is required. Going with adhesive will increase the cost of fabrication and also the cure temperature requirement for the adhesive will make the fabrication more complex. Thank you all. But if these are just test points (which I agree I think they are) and you don't know where they lead to, then you couldn't get any use out of them anyway... so I wouldn't sweat it. I wonder what the test conditions are (probably "squeaky clean") and what the insulation voltage of a USB-C connector will be in real conditions with a bit of crud, pocket lint, sweat or moisture...
But clearly -- assuming adequate filtering is possible, it's not at all a necessary improvement, so don't sweat leaving it open, either. If I am using the shield, is the above drawing optimal? Or should I do separate shielding for any signal as well? For example, [UART TX and RX in a shield] + [all remaining signals].
