ESP32 development board with stepper motor driver
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3.9 KiB

{
"Header": {
"GenerationSoftware": {
"Vendor": "KiCad",
"Application": "Pcbnew",
"Version": "6.0.4-6f826c9f35~116~ubuntu20.04.1"
},
"CreationDate": "2022-03-30T05:15:32+01:00"
},
"GeneralSpecs": {
"ProjectId": {
"Name": "step32",
"GUID": "73746570-3332-42e6-9b69-6361645f7063",
"Revision": "rev?"
},
"Size": {
"X": 55.1,
"Y": 64.1
},
"LayerNumber": 4,
"BoardThickness": 1.5954,
"Finish": "HAL lead-free",
"ImpedanceControlled": true
},
"DesignRules": [
{
"Layers": "Outer",
"PadToPad": 0.2,
"PadToTrack": 0.2,
"TrackToTrack": 0.2,
"MinLineWidth": 0.2,
"TrackToRegion": 0.508,
"RegionToRegion": 0.508
},
{
"Layers": "Inner",
"PadToPad": 0.0,
"PadToTrack": 0.0,
"TrackToTrack": 0.2,
"TrackToRegion": 0.508,
"RegionToRegion": 0.508
}
],
"FilesAttributes": [
{
"Path": "step32-F_Cu.gtl",
"FileFunction": "Copper,L1,Top",
"FilePolarity": "Positive"
},
{
"Path": "step32-In1_Cu.g2",
"FileFunction": "Copper,L2,Inr",
"FilePolarity": "Positive"
},
{
"Path": "step32-In2_Cu.g3",
"FileFunction": "Copper,L3,Inr",
"FilePolarity": "Positive"
},
{
"Path": "step32-B_Cu.gbl",
"FileFunction": "Copper,L4,Bot",
"FilePolarity": "Positive"
},
{
"Path": "step32-F_Paste.gtp",
"FileFunction": "SolderPaste,Top",
"FilePolarity": "Positive"
},
{
"Path": "step32-B_Paste.gbp",
"FileFunction": "SolderPaste,Bot",
"FilePolarity": "Positive"
},
{
"Path": "step32-F_Silkscreen.gto",
"FileFunction": "Legend,Top",
"FilePolarity": "Positive"
},
{
"Path": "step32-B_Silkscreen.gbo",
"FileFunction": "Legend,Bot",
"FilePolarity": "Positive"
},
{
"Path": "step32-F_Mask.gts",
"FileFunction": "SolderMask,Top",
"FilePolarity": "Negative"
},
{
"Path": "step32-B_Mask.gbs",
"FileFunction": "SolderMask,Bot",
"FilePolarity": "Negative"
},
{
"Path": "step32-Edge_Cuts.gm1",
"FileFunction": "Profile",
"FilePolarity": "Positive"
}
],
"MaterialStackup": [
{
"Type": "Legend",
"Color": "White",
"Name": "Top Silk Screen"
},
{
"Type": "SolderPaste",
"Name": "Top Solder Paste"
},
{
"Type": "SolderMask",
"Color": "Green",
"Thickness": 0.0127,
"Name": "Top Solder Mask"
},
{
"Type": "Copper",
"Thickness": 0.035,
"Name": "F.Cu"
},
{
"Type": "Dielectric",
"Thickness": 0.1,
"Material": "Prepreg 2313",
"DielectricConstant": "4.05",
"LossTangent": "0.02",
"Name": "F.Cu/In1.Cu",
"Notes": "Type: dielectric layer 1 (from F.Cu to In1.Cu)"
},
{
"Type": "Copper",
"Thickness": 0.0175,
"Name": "In1.Cu"
},
{
"Type": "Dielectric",
"Thickness": 1.265,
"Material": "FR4",
"DielectricConstant": "4.6",
"LossTangent": "0.02",
"Name": "In1.Cu/In2.Cu",
"Notes": "Type: dielectric layer 2 (from In1.Cu to In2.Cu)"
},
{
"Type": "Copper",
"Thickness": 0.0175,
"Name": "In2.Cu"
},
{
"Type": "Dielectric",
"Thickness": 0.1,
"Material": "Prepreg 2313",
"DielectricConstant": "4.05",
"LossTangent": "0.02",
"Name": "In2.Cu/B.Cu",
"Notes": "Type: dielectric layer 3 (from In2.Cu to B.Cu)"
},
{
"Type": "Copper",
"Thickness": 0.035,
"Name": "B.Cu"
},
{
"Type": "SolderMask",
"Color": "Green",
"Thickness": 0.0127,
"Name": "Bottom Solder Mask"
},
{
"Type": "SolderPaste",
"Name": "Bottom Solder Paste"
},
{
"Type": "Legend",
"Color": "White",
"Name": "Bottom Silk Screen"
}
]
}