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chore: import upstream snapshot with attribution
2026-07-13 13:03:19 +08:00

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(export (version "E")
(design
(source "/Users/davidguerrero/Documents/kicad_555timer_circuit/kicad_555timer_circuit.kicad_sch")
(date "2026-02-26T19:17:11-0600")
(tool "Eeschema 9.0.7")
(sheet (number "1") (name "/") (tstamps "/")
(title_block
(title)
(company)
(rev)
(date)
(source "kicad_555timer_circuit.kicad_sch")
(comment (number "1") (value ""))
(comment (number "2") (value ""))
(comment (number "3") (value ""))
(comment (number "4") (value ""))
(comment (number "5") (value ""))
(comment (number "6") (value ""))
(comment (number "7") (value ""))
(comment (number "8") (value ""))
(comment (number "9") (value "")))))
(components
(comp (ref "C1")
(value "C")
(datasheet "~")
(description "Unpolarized capacitor")
(fields
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Unpolarized capacitor"))
(libsource (lib "Device") (part "C") (description "Unpolarized capacitor"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_555timer_circuit.kicad_sch"))
(property (name "ki_keywords") (value "cap capacitor"))
(property (name "ki_fp_filters") (value "C_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "58321bf7-666d-48ed-a5f0-8e9b378fac96"))
(comp (ref "C2")
(value "C_US")
(description "capacitor, US symbol")
(fields
(field (name "Footprint"))
(field (name "Datasheet"))
(field (name "Description") "capacitor, US symbol"))
(libsource (lib "Device") (part "C_US") (description "capacitor, US symbol"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_555timer_circuit.kicad_sch"))
(property (name "ki_keywords") (value "cap capacitor"))
(property (name "ki_fp_filters") (value "C_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "904e1067-eb09-4f27-b453-1f7018636cea"))
(comp (ref "D1")
(value "LED_Filled")
(datasheet "~")
(description "Light emitting diode, filled shape")
(fields
(field (name "Sim.Pins") "1=K 2=A")
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Light emitting diode, filled shape"))
(libsource (lib "Device") (part "LED_Filled") (description "Light emitting diode, filled shape"))
(property (name "Sim.Pins") (value "1=K 2=A"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_555timer_circuit.kicad_sch"))
(property (name "ki_keywords") (value "LED diode"))
(property (name "ki_fp_filters") (value "LED* LED_SMD:* LED_THT:*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "f353cb6c-09e9-4701-b846-7528ff8f0034"))
(comp (ref "R1")
(value "R_US")
(datasheet "~")
(description "Resistor, US symbol")
(fields
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Resistor, US symbol"))
(libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_555timer_circuit.kicad_sch"))
(property (name "ki_keywords") (value "R res resistor"))
(property (name "ki_fp_filters") (value "R_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "e06ee1fc-67a4-42d4-808a-dc6d600bce80"))
(comp (ref "R2")
(value "R_US")
(datasheet "~")
(description "Resistor, US symbol")
(fields
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Resistor, US symbol"))
(libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_555timer_circuit.kicad_sch"))
(property (name "ki_keywords") (value "R res resistor"))
(property (name "ki_fp_filters") (value "R_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "3e5db362-8c65-44df-b425-374a6fda779e"))
(comp (ref "R3")
(value "R_US")
(datasheet "~")
(description "Resistor, US symbol")
(fields
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Resistor, US symbol"))
(libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_555timer_circuit.kicad_sch"))
(property (name "ki_keywords") (value "R res resistor"))
(property (name "ki_fp_filters") (value "R_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "cca6031f-2645-44aa-bc81-f1640ed0a8ca"))
(comp (ref "U1")
(value "LM555xN")
(footprint "Package_DIP:DIP-8_W7.62mm")
(datasheet "http://www.ti.com/lit/ds/symlink/lm555.pdf")
(description "Timer, 555 compatible, PDIP-8")
(fields
(field (name "Footprint") "Package_DIP:DIP-8_W7.62mm")
(field (name "Datasheet") "http://www.ti.com/lit/ds/symlink/lm555.pdf")
(field (name "Description") "Timer, 555 compatible, PDIP-8"))
(libsource (lib "Timer") (part "LM555xN") (description "Timer, 555 compatible, PDIP-8"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_555timer_circuit.kicad_sch"))
(property (name "ki_keywords") (value "single timer 555"))
(property (name "ki_fp_filters") (value "DIP*W7.62mm*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "431999d5-2a12-403e-b028-8aa300b9cf42")))
(libparts
(libpart (lib "Device") (part "C")
(description "Unpolarized capacitor")
(docs "~")
(footprints
(fp "C_*"))
(fields
(field (name "Reference") "C")
(field (name "Value") "C")
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Unpolarized capacitor"))
(pins
(pin (num "1") (name "") (type "passive"))
(pin (num "2") (name "") (type "passive"))))
(libpart (lib "Device") (part "C_US")
(description "capacitor, US symbol")
(footprints
(fp "C_*"))
(fields
(field (name "Reference") "C")
(field (name "Value") "C_US")
(field (name "Footprint"))
(field (name "Datasheet"))
(field (name "Description") "capacitor, US symbol"))
(pins
(pin (num "1") (name "") (type "passive"))
(pin (num "2") (name "") (type "passive"))))
(libpart (lib "Device") (part "LED_Filled")
(description "Light emitting diode, filled shape")
(docs "~")
(footprints
(fp "LED*")
(fp "LED_SMD:*")
(fp "LED_THT:*"))
(fields
(field (name "Reference") "D")
(field (name "Value") "LED_Filled")
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Light emitting diode, filled shape")
(field (name "Sim.Pins") "1=K 2=A"))
(pins
(pin (num "1") (name "K") (type "passive"))
(pin (num "2") (name "A") (type "passive"))))
(libpart (lib "Device") (part "R_US")
(description "Resistor, US symbol")
(docs "~")
(footprints
(fp "R_*"))
(fields
(field (name "Reference") "R")
(field (name "Value") "R_US")
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Resistor, US symbol"))
(pins
(pin (num "1") (name "") (type "passive"))
(pin (num "2") (name "") (type "passive"))))
(libpart (lib "Timer") (part "LM555xN")
(description "Timer, 555 compatible, PDIP-8")
(docs "http://www.ti.com/lit/ds/symlink/lm555.pdf")
(footprints
(fp "DIP*W7.62mm*"))
(fields
(field (name "Reference") "U")
(field (name "Value") "LM555xN")
(field (name "Footprint") "Package_DIP:DIP-8_W7.62mm")
(field (name "Datasheet") "http://www.ti.com/lit/ds/symlink/lm555.pdf")
(field (name "Description") "Timer, 555 compatible, PDIP-8"))
(pins
(pin (num "1") (name "GND") (type "power_in"))
(pin (num "2") (name "TRIG") (type "input"))
(pin (num "3") (name "OUT") (type "output"))
(pin (num "4") (name "~{RST}") (type "input"))
(pin (num "5") (name "CONT") (type "open_collector"))
(pin (num "6") (name "THRES") (type "input"))
(pin (num "7") (name "DISCH") (type "input"))
(pin (num "8") (name "VCC") (type "power_in")))))
(libraries
(library (logical "Device")
(uri "/Applications/KiCad/KiCad.app/Contents/SharedSupport/symbols//Device.kicad_sym"))
(library (logical "Timer")
(uri "/Applications/KiCad/KiCad.app/Contents/SharedSupport/symbols//Timer.kicad_sym")))
(nets
(net (code "1") (name "+5V") (class "Default")
(node (ref "R1") (pin "1") (pintype "passive"))
(node (ref "U1") (pin "4") (pinfunction "~{RST}") (pintype "input"))
(node (ref "U1") (pin "8") (pinfunction "VCC") (pintype "power_in")))
(net (code "2") (name "GND") (class "Default")
(node (ref "C1") (pin "2") (pintype "passive"))
(node (ref "C2") (pin "2") (pintype "passive"))
(node (ref "D1") (pin "1") (pinfunction "K") (pintype "passive"))
(node (ref "U1") (pin "1") (pinfunction "GND") (pintype "power_in")))
(net (code "3") (name "Net-(D1-A)") (class "Default")
(node (ref "D1") (pin "2") (pinfunction "A") (pintype "passive"))
(node (ref "R3") (pin "2") (pintype "passive")))
(net (code "4") (name "Net-(U1-CONT)") (class "Default")
(node (ref "C1") (pin "1") (pintype "passive"))
(node (ref "U1") (pin "5") (pinfunction "CONT") (pintype "open_collector")))
(net (code "5") (name "Net-(U1-DISCH)") (class "Default")
(node (ref "R1") (pin "2") (pintype "passive"))
(node (ref "R2") (pin "1") (pintype "passive"))
(node (ref "U1") (pin "7") (pinfunction "DISCH") (pintype "input")))
(net (code "6") (name "Net-(U1-OUT)") (class "Default")
(node (ref "R3") (pin "1") (pintype "passive"))
(node (ref "U1") (pin "3") (pinfunction "OUT") (pintype "output")))
(net (code "7") (name "Net-(U1-THRES)") (class "Default")
(node (ref "C2") (pin "1") (pintype "passive"))
(node (ref "R2") (pin "2") (pintype "passive"))
(node (ref "U1") (pin "2") (pinfunction "TRIG") (pintype "input"))
(node (ref "U1") (pin "6") (pinfunction "THRES") (pintype "input")))))