### test maths rendering

parent 376494c1
.gitignore 0 → 100644
 jake/ **.elf **.hex **.bin **.lss **.map **.srec **.o **.d **.DS_Store **.b#* **.s#* **/ASF/ js/node_modules/ sim/js_code.txt sim/TinyNets/nbproject/ \ No newline at end of file
 ... ... @@ -16,9 +16,15 @@ In short, these solutions seem cool, but complicated, and I need to take some mo - adc resolution -> bar width / spacing - grounding, stack setup, tx pads, rx pad(s)? ## Understanding the Phenomenon It's good to try to get a grounding on what's really going on. To get the basics in order, I go [here](http://hyperphysics.phy-astr.gsu.edu/hbase/electric/pplate.html). Capacitance is \$C = \frac{k * e * A}{d}\$ where \$k\$ is the relative permittivity of the material between the plates, \$e\$ is a constant making \$k * e = 1\$ in air, \$A\$ is the area of the plates and \$d\$ is the separation of those plates. Some quick thoughts - do static tx / rx pads. reference is metallic thing that moves between them, changing the permeability of space between them - bc capacitance is C = \frac{k * e * A}{d} where E is constant, A is area, and K is relative permeability (k ~= 1 for air) - do static tx / rx pads. reference is metallic thing that moves between them, changing the permeattivity of space between them - bc capacitance is C = \frac{k * e * A}{d} where E is constant, A is area, and K is relative permeattivity (k ~= 1 for air) - 'metallic thing' can be double-sided pcb w/ sawtooth or sine pattern to read - can do spreadsheet maths for tx / rx areas, see what total capacitance range will be (1pf -> 15pf?) - can figure apparent rise-time calculator, probably? ... ...
 ... ... @@ -353,10 +353,10 @@ UsedLibrary="D:/Dropbox (Personal)/CBA/doc/libraries/eagle/fab.lbr" [Win_1] Type="Control Panel" Loc="0 0 3839 2065" Loc="0 0 1919 1016" State=1 Number=0 [Desktop] Screen="3840 2160" Screen="1920 2160" Window="Win_1"

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