docs: Update unreleased changes in changelog and README
- Fixed USB hub controller (U401/CH334): XO pin connected to GND for crystal-less operation - Fixed DC/DC converter (U202/XR76208): Enable circuit changed to Zener diode for 12V operation - Fixed USB outputs: Replaced fuses with TPS2557 power distribution switches for backfeed protection
This commit is contained in:
@@ -9,6 +9,11 @@ und dieses Projekt folgt [Semantic Versioning](https://semver.org/lang/de/).
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||||
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||||
## [Unreleased]
|
||||
|
||||
### Behoben
|
||||
- **USB-Hub-Controller (U401/CH334):** Pin 4 (XO) auf GND gelegt, um den Betrieb ohne Kristall zu ermöglichen
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||||
- **DC/DC-Wandler (U202/XR76208):** Enable-Beschaltung von Spannungsteiler auf Zenerdiode geändert, um 12V-Betrieb zu ermöglichen
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- **USB-Ausgänge:** Sicherungen durch TPS2557 Power-Distribution-Switches ersetzt, um Backfeeding zu verhindern
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||||
### Geändert
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||||
- **Produktion:** Testpunkte TP202/TP203 von Stückliste ausgeschlossen
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||||
- **JLCPCB Optimierung:** Rotations-Offsets für automatische Bestückung angepasst
|
||||
@@ -16,6 +21,9 @@ und dieses Projekt folgt [Semantic Versioning](https://semver.org/lang/de/).
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- U401: FT Rotation Offset 180°
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### Technische Details
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- **USB-Hub Stabilität:** CH334 arbeitet nun im internen Oszillator-Modus ohne externen Kristall
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- **Erweiterte Eingangsspannung:** XR76208 unterstützt nun 12-24V Eingangsspannung durch Zenerdioden-basierte Enable-Schaltung
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- **USB-Backfeed-Schutz:** TPS2557 verhindert Rückspeisung von externen USB-Geräten und bietet Überstrom-/Kurzschlussschutz
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||||
- **Fertigungseffizienz:** Optimierte Bauteil-Orientierung reduziert Produktionszeit
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||||
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||||
## [Rev. 0.3] - 2025-12-09
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@@ -9,6 +9,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
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## [Unreleased]
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### Fixed
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- **USB Hub Controller (U401/CH334):** Pin 4 (XO) connected to GND to enable operation without crystal
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- **DC/DC Converter (U202/XR76208):** Enable circuit changed from voltage divider to Zener diode to enable 12V operation
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- **USB Outputs:** Fuses replaced with TPS2557 power distribution switches to prevent backfeeding
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### Changed
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- **Production:** Test points TP202/TP203 excluded from BOM
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- **JLCPCB Optimization:** Rotation offsets adjusted for automated assembly
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@@ -16,6 +21,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
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- U401: FT Rotation Offset 180°
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### Technical Details
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- **USB Hub Stability:** CH334 now operates in internal oscillator mode without external crystal
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- **Extended Input Voltage:** XR76208 now supports 12-24V input voltage through Zener diode-based enable circuit
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- **USB Backfeed Protection:** TPS2557 prevents backfeeding from external USB devices and provides overcurrent/short-circuit protection
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- **Manufacturing Efficiency:** Optimized component orientation reduces production time
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## [Rev. 0.3] - 2025-12-09
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13277
EWS.kicad_pcb
13277
EWS.kicad_pcb
File diff suppressed because it is too large
Load Diff
@@ -804,6 +804,6 @@
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]
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],
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||||
"text_variables": {
|
||||
"PROJEKT_REV": "0.3"
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||||
"PROJEKT_REV": "1.0"
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||||
}
|
||||
}
|
||||
|
||||
@@ -3,7 +3,7 @@
|
||||
(generator "eeschema")
|
||||
(generator_version "9.0")
|
||||
(uuid "4ae99543-64c8-472f-befd-04c32f138656")
|
||||
(paper "A4")
|
||||
(paper "A3")
|
||||
(title_block
|
||||
(title "EWS - Power, CANbus and USB HAT for 3D Printers")
|
||||
(date "2025-12-04")
|
||||
|
||||
17
README.de.md
17
README.de.md
@@ -89,6 +89,7 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
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||||
### ⚡ DC/DC Wandler (5V Ausgang)
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||||
|
||||
- **Controller:** MaxLinear XR76208 (Synchroner Step-Down, 8A, COT)
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||||
- **Eingangsspannung:** 12-24V DC (Enable-Schaltung mit Zenerdiode)
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||||
- **Eingangssicherung:** 5A SMD 1812 Slow Blow
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||||
- **Verpolschutz:** SS56 Schottky-Diode
|
||||
- **Ausgangsspannung:** 5.1V (eingestellt über Feedback-Teiler: R_Top=15kΩ, R_Bottom=2.0kΩ)
|
||||
@@ -99,7 +100,7 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
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||||
- **Stabilität:** Feed-Forward Kondensator (Cff) 1nF parallel zum oberen Feedback-Widerstand
|
||||
- **Soft-Start:** 100nF an Pin SS (ca. 6ms Anlaufzeit)
|
||||
- **Stromlimit:** 5.1kΩ Widerstand (~10.2A Grenzwert)
|
||||
- **Enable:** Spannungsteiler von 24V (100kΩ oben, 22kΩ unten) = ca. 4.3V am Pin
|
||||
- **Enable:** Zenerdioden-basierte Schaltung für 12-24V Eingangsspannungsbereich
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||||
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||||
### 🔌 Logik-Spannungsversorgung (Power Path)
|
||||
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||||
@@ -130,7 +131,7 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
|
||||
|
||||
- **Controller:** WCH CH334F (QFN-24)
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||||
- **Geschwindigkeit:** USB 2.0 High Speed (480 Mbit/s) mit MTT
|
||||
- **Taktung:** Intern (Crystal-less), XI/XO Pins offen gelassen
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||||
- **Taktung:** Intern (Crystal-less), XO Pin auf GND gelegt für internen Oszillator-Modus
|
||||
- **Versorgung:** V5 an +5V_LOGIC
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||||
- **Upstream:** Zum Raspberry Pi Header (USB Loopback Kabel erforderlich) oder USB-C Input
|
||||
- **Downstream Ports:**
|
||||
@@ -139,14 +140,16 @@ Dieses Board wurde entwickelt, um mehrere kritische Probleme zu lösen, die häu
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||||
- USB-A Buchse (Vertikal, für Webcam)
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||||
|
||||
**USB Port Absicherung:**
|
||||
- **Konzept:** 100µF Elko als Tank an +5V_PWR, gefolgt von Polyfuse, gefolgt von 22µF Keramik an der Buchse
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||||
- **Konzept:** 100µF Elko als Tank an +5V_PWR, gefolgt von TPS2557 Power Distribution Switch, gefolgt von 22µF Keramik an der Buchse
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||||
- **USB-C Port (Screen):**
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||||
- Polyfuse: 4.0A Hold Current (Derating für Hot Chamber berücksichtigt)
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||||
- CC-Leitungen: CC1 und CC2 jeweils mit eigenem 10kOhm Widerstand an VBUS (hinter der Sicherung) gezogen (Source 3A Advertisement)
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- TPS2557: Power Distribution Switch mit Backfeed-Schutz, Überstrom-/Kurzschlussschutz
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||||
- Strombegrenzung: Programmierbarer Limit durch externen Widerstand
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||||
- CC-Leitungen: CC1 und CC2 jeweils mit eigenem 10kOhm Widerstand an VBUS (hinter dem Switch) gezogen (Source 3A Advertisement)
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||||
- ESD-Schutz: SRV05-4 TVS-Array
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||||
- **USB-A Port (Webcam):**
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||||
- Polyfuse: 1.5A Hold Current
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- **ESD-Schutz:** SRV05-4 TVS-Array
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- TPS2557: Power Distribution Switch mit Backfeed-Schutz, Überstrom-/Kurzschlussschutz
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||||
- Strombegrenzung: Programmierbarer Limit durch externen Widerstand
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||||
- ESD-Schutz: SRV05-4 TVS-Array
|
||||
|
||||
## 📋 Klipper Konfiguration
|
||||
|
||||
|
||||
17
README.md
17
README.md
@@ -89,6 +89,7 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
### ⚡ DC/DC Converter (5V Output)
|
||||
|
||||
- **Controller:** MaxLinear XR76208 (Synchronous Step-Down, 8A, COT)
|
||||
- **Input Voltage:** 12-24V DC (enable circuit with Zener diode)
|
||||
- **Input Fuse:** 5A SMD 1812 Slow Blow
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||||
- **Reverse Polarity Protection:** SS56 Schottky diode
|
||||
- **Output Voltage:** 5.1V (set via feedback divider: R_Top=15kΩ, R_Bottom=2.0kΩ)
|
||||
@@ -99,7 +100,7 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
- **Stability:** Feed-forward capacitor (Cff) 1nF parallel to upper feedback resistor
|
||||
- **Soft-Start:** 100nF at SS pin (~6ms startup time)
|
||||
- **Current Limit:** 5.1kΩ resistor (~10.2A limit)
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||||
- **Enable:** Voltage divider from 24V (100kΩ upper, 22kΩ lower) = ~4.3V at pin
|
||||
- **Enable:** Zener diode-based circuit for 12-24V input voltage range
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||||
|
||||
### 🔌 Logic Power Supply (Power Path)
|
||||
|
||||
@@ -130,7 +131,7 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
|
||||
- **Controller:** WCH CH334F (QFN-24)
|
||||
- **Speed:** USB 2.0 High Speed (480 Mbit/s) with MTT
|
||||
- **Clocking:** Internal (crystal-less), XI/XO pins left open
|
||||
- **Clocking:** Internal (crystal-less), XO pin connected to GND for internal oscillator mode
|
||||
- **Supply:** V5 to +5V_LOGIC
|
||||
- **Upstream:** To Raspberry Pi Header (USB loopback cable required) or USB-C input
|
||||
- **Downstream Ports:**
|
||||
@@ -139,14 +140,16 @@ This board was designed to solve multiple critical issues commonly encountered i
|
||||
- USB-A connector (vertical, for webcam)
|
||||
|
||||
**USB Port Protection:**
|
||||
- **Concept:** 100µF electrolytic tank at +5V_PWR, followed by polyfuse, followed by 22µF ceramic at connector
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||||
- **Concept:** 100µF electrolytic tank at +5V_PWR, followed by TPS2557 power distribution switch, followed by 22µF ceramic at connector
|
||||
- **USB-C Port (Screen):**
|
||||
- Polyfuse: 4.0A hold current (hot chamber derating considered)
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||||
- CC Lines: CC1 and CC2 each with 10kΩ resistor to VBUS (behind fuse) for 3A advertisement
|
||||
- TPS2557: Power distribution switch with backfeed protection, overcurrent/short-circuit protection
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||||
- Current limiting: Programmable limit via external resistor
|
||||
- CC Lines: CC1 and CC2 each with 10kΩ resistor to VBUS (behind switch) for 3A advertisement
|
||||
- ESD Protection: SRV05-4 TVS array
|
||||
- **USB-A Port (Webcam):**
|
||||
- Polyfuse: 1.5A hold current
|
||||
- **ESD Protection:** SRV05-4 TVS array
|
||||
- TPS2557: Power distribution switch with backfeed protection, overcurrent/short-circuit protection
|
||||
- Current limiting: Programmable limit via external resistor
|
||||
- ESD Protection: SRV05-4 TVS array
|
||||
|
||||
## 📋 Klipper Configuration
|
||||
|
||||
|
||||
2711
conn.kicad_sch
2711
conn.kicad_sch
File diff suppressed because it is too large
Load Diff
@@ -3,7 +3,7 @@
|
||||
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(title_block
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(title "EWS - Power, CANbus and USB HAT for 3D Printers")
|
||||
(date "2025-12-04")
|
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|
||||
521
power.kicad_sch
521
power.kicad_sch
@@ -3,7 +3,7 @@
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@@ -419,6 +419,156 @@
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Binary file not shown.
@@ -9,6 +9,7 @@ C213,0402,1,1n,C1523
|
||||
"C214, C215, C216, C217, C306, C307, C405, C406",1206,8,22u,C12891
|
||||
"C303, C304, C402",0603,3,10u,C96446
|
||||
"D201, D202, D203",0805,3,YELLOW,C2296
|
||||
D204,D_SOD-123,1,BZT52C4V7,C19077400
|
||||
D301,0805,1,GREEN,C2297
|
||||
D302,SOT-23,1,PESD1CAN,C907838
|
||||
"D401, D402",D_SOD-323,2,BZT52C15S,C19077448
|
||||
@@ -17,8 +18,6 @@ D404,D_SMA,1,SMAJ26A,C19077543
|
||||
"D405, D406",D_SOD-323,2,1N5819WS,C191023
|
||||
F201,1206,1,3A,C163126
|
||||
"F401, F402",1206,2,5A,C163128
|
||||
F403,0805,1,4A,C2680546
|
||||
F404,0805,1,1.5A,C914095
|
||||
HS201,HeatSink_9x9x5,1,Heatsink,
|
||||
J301,PinSocket_2x20_P2.54mm_Vertical,1,GPIO,
|
||||
J401,AMASS_XT30PW-M_1x02_P2.50mm_Horizontal,1,XT30,C431092
|
||||
@@ -29,17 +28,17 @@ L201,L_APV_APH1050,1,3.3uH,C2847560
|
||||
"Q401, Q402",AO_DFN-8-1EP_5.55x5.2mm_P1.27mm_EP4.12x4.6mm,2,CJAC70P06,C2898279
|
||||
"Q403, Q404",SOT-23,2,AO3400A,C20917
|
||||
R201,0402,1,22k,C25768
|
||||
"R202, R205",0402,2,2k2,C25879
|
||||
R202,0402,1,2k2,C25879
|
||||
"R203, R302, R305, R407, R408",0402,5,1k,C11702
|
||||
R204,0402,1,100k,C25741
|
||||
"R206, R303, R411, R412",0402,4,10k,C25744
|
||||
"R207, R401, R402, R403, R404, R405, R406",0402,7,33k,C25779
|
||||
"R204, R206, R303, R411, R412",0402,5,10k,C25744
|
||||
"R207, R401, R402, R403, R404, R405, R406, R413",0402,8,33k,C25779
|
||||
"R208, R409, R410",0402,3,5k1,C25905
|
||||
R209,0603,1,1R,C22936
|
||||
R210,0402,1,15k,C25756
|
||||
R211,0402,1,2k,C4109
|
||||
R301,0402,1,330R,C25104
|
||||
R304,0603,1,120R,C22787
|
||||
R414,0603,1,68k,C23231
|
||||
"SW301, SW302",SW_SPST_TS-1088-xR020,2,TS-1088,C720477
|
||||
U201,SOT-23-3,1,XC6206P332MR,C5446
|
||||
U202,IC_XR76208ELTR-F,1,XR76208,C555356
|
||||
@@ -47,3 +46,4 @@ U301,HVSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm,1,TJA1051TK-3,C2875699
|
||||
U302,QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm,1,STM32G0B1KBUx,C5159549
|
||||
U401,QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias,1,CH334F,C5187527
|
||||
"U402, U403, U404",SOT-23-6,3,USBLC6-2SC6,C2687116
|
||||
"U405, U406",S-PVSON-N8,2,TPS2557,
|
||||
|
||||
|
@@ -31,6 +31,7 @@ C406:1
|
||||
D201:1
|
||||
D202:1
|
||||
D203:1
|
||||
D204:1
|
||||
D301:1
|
||||
D302:1
|
||||
D401:1
|
||||
@@ -42,8 +43,6 @@ D406:1
|
||||
F201:1
|
||||
F401:1
|
||||
F402:1
|
||||
F403:1
|
||||
F404:1
|
||||
HS201:1
|
||||
J301:1
|
||||
J401:1
|
||||
@@ -80,7 +79,6 @@ R201:1
|
||||
R202:1
|
||||
R203:1
|
||||
R204:1
|
||||
R205:1
|
||||
R206:1
|
||||
R207:1
|
||||
R208:1
|
||||
@@ -104,6 +102,8 @@ R409:1
|
||||
R410:1
|
||||
R411:1
|
||||
R412:1
|
||||
R413:1
|
||||
R414:1
|
||||
SW301:1
|
||||
SW302:1
|
||||
TP201:1
|
||||
@@ -120,3 +120,5 @@ U401:1
|
||||
U402:1
|
||||
U403:1
|
||||
U404:1
|
||||
U405:1
|
||||
U406:1
|
||||
|
||||
|
File diff suppressed because it is too large
Load Diff
@@ -25,13 +25,14 @@ C306,142.875,-77.6,180.0,top
|
||||
C307,142.875,-75.2,180.0,top
|
||||
C401,180.78,-78.7,0.0,top
|
||||
C402,178.125,-77.2,180.0,top
|
||||
C403,175.4,-104.9,270.0,top
|
||||
C403,172.3,-105.8,0.0,top
|
||||
C404,178.42,-78.4,180.0,top
|
||||
C405,185.0,-103.5,90.0,top
|
||||
C406,180.4,-103.6,270.0,top
|
||||
C406,177.1,-100.5,180.0,top
|
||||
D201,165.4,-89.8,180.0,top
|
||||
D202,165.4,-94.0,180.0,top
|
||||
D203,165.4,-91.9,180.0,top
|
||||
D204,150.35,-114.6,90.0,top
|
||||
D301,165.4,-96.1,180.0,top
|
||||
D302,150.5875,-78.5,180.0,top
|
||||
D401,156.6375,-89.85,90.0,top
|
||||
@@ -43,8 +44,6 @@ D406,184.15,-79.25,0.0,top
|
||||
F201,155.6,-103.2,90.0,top
|
||||
F401,143.1125,-104.0,180.0,top
|
||||
F402,143.0125,-87.2,180.0,top
|
||||
F403,184.5625,-110.8,0.0,top
|
||||
F404,179.6625,-100.3,0.0,top
|
||||
HS201,157.15,-112.15,270.0,bottom
|
||||
J301,162.5,-70.5,270.0,bottom
|
||||
J401,138.725,-95.6,270.0,top
|
||||
@@ -66,8 +65,7 @@ Q404,159.5,-83.59,0.0,top
|
||||
R201,162.69,-90.8,0.0,top
|
||||
R202,162.7,-92.8,0.0,top
|
||||
R203,162.69,-91.8,0.0,top
|
||||
R204,153.5,-121.25,90.0,top
|
||||
R205,154.5,-121.25,270.0,top
|
||||
R204,152.35,-119.9,90.0,top
|
||||
R206,156.68,-121.25,90.0,top
|
||||
R207,155.48,-121.25,270.0,top
|
||||
R208,154.0,-119.25,0.0,top
|
||||
@@ -91,6 +89,8 @@ R409,190.4,-87.8,0.0,top
|
||||
R410,190.4,-76.2,0.0,top
|
||||
R411,190.2,-113.8,180.0,top
|
||||
R412,190.2,-102.2,180.0,top
|
||||
R413,185.31,-113.15,180.0,top
|
||||
R414,180.95,-100.8,0.0,top
|
||||
SW301,166.5,-78.5,270.0,top
|
||||
SW302,171.0,-78.5,270.0,top
|
||||
U201,182.6,-75.7,180.0,top
|
||||
@@ -101,3 +101,5 @@ U401,178.2,-81.5,90.0,top
|
||||
U402,184.1,-82.0,90.0,top
|
||||
U403,184.1625,-107.5,270.0,top
|
||||
U404,178.2,-88.6,180.0,top
|
||||
U405,183.6,-111.1,0.0,top
|
||||
U406,178.65,-103.65,90.0,top
|
||||
|
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326
project.pretty/S-PVSON-N8.kicad_mod
Normal file
326
project.pretty/S-PVSON-N8.kicad_mod
Normal file
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Reference in New Issue
Block a user