diff --git a/Flow_Controller.kicad_sch b/Flow_Controller.kicad_sch
index 1403036..e084a6d 100644
--- a/Flow_Controller.kicad_sch
+++ b/Flow_Controller.kicad_sch
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diff --git a/Readme.md b/Readme.md
index 981c188..ea52086 100644
--- a/Readme.md
+++ b/Readme.md
@@ -23,12 +23,12 @@ A fail-safe water flow monitoring module designed to protect CNC spindles and la
* **Adjustable Threshold:** 2-button interface (Up/Down) using an analog resistor ladder (ADC) to save MCU pins.
* **Fail-Safe Output:** N-channel MOSFET (2N7002) acting as an open-drain output. It actively pulls the CNC input to GND during normal operation. If power fails, wires break, or water stops, the connection opens and triggers the CNC alarm.
* **EMI Protection:** Hardware RC debouncing and noise filtering on the sensor input.
-* **Direct 5V Operation:** Powered directly from the CNC controller's 5V rail.
+* **Direct 24V Operation:** Powered directly from the CNC controller's 24V rail.
## Hardware Design (KiCad)
-* **Power:** 5V DC Input (via CNC connector J4).
+* **Power:** 24V DC Input (via CNC connector J3).
* **Sensor Compatibility:** ZJ-S401 Water flow sensor (plastic valve body, a water rotor and a hall-effect sensor). See [the working principle of the hall water flow sensor](https://www.seeedstudio.com/blog/2020/05/11/how-to-use-water-flow-sensor-with-arduino/).
-* **Output:** 3-pin CNC interface (+5V, GND, ALARM_CNC). Connects directly to standard CNC active-low sinking inputs.
+* **Output:** 3-pin CNC interface (+24V, GND, ALARM_CNC). Connects directly to standard CNC active-low sinking inputs.
## Panel Design and GCode
The [scripts](scripts) folder contains a guide to panelize the board (`Flow_Controller_Panel.kicad_pcb`) and howto generate gcode.
@@ -39,7 +39,7 @@ The [scripts](scripts) folder contains a guide to panelize the board (`Flow_Cont
| 1 | `FLOW_PULSE_MCU` | Input: Pulse counter from Flow Sensor | PD6 |
| 2 | `GND` | System Ground (VSS) | VSS |
| 3 | `ALARM_TRIGGER` | Output: Drives the Gate of the 2N7002 | PA2 |
-| 4 | `+5V` | System Power (VDD) | VDD |
+| 4 | `+24V` | System Power (VDD) | VDD |
| 5 | `I2C_SDA` | I2C Data (OLED Display) | PC1 |
| 6 | `I2C_SCL` | I2C Clock (OLED Display) | PC2 |
| 7 | `BUTTON_ADC` | ADC Input: 2-Button Resistor Ladder | PC4 |
@@ -56,6 +56,6 @@ The firmware is written in C using the lightweight `ch32fun` framework. All sour
**Step-by-step Setup:**
1. Follow the setup guide in [`firmware`](firmware) to install the RISC-V GCC toolchain and `minichlink`.
-2. Connect your **WCH-LinkE** programmer to the 3-pin SWIO header `J1` (+5V, SWIO, GND).
+2. Connect your **WCH-LinkE** programmer to the 3-pin SWIO header `J1` (+3.3V, SWIO, GND).
3. Run `make` to compile the firmware.
4. Run `make flash` to upload the code to the CH32V003 microcontroller.
\ No newline at end of file
diff --git a/images/Flow_Controller.svg b/images/Flow_Controller.svg
index 19c4a22..5b52175 100644
--- a/images/Flow_Controller.svg
+++ b/images/Flow_Controller.svg
@@ -7,7 +7,7 @@
xmlns:xlink="http://www.w3.org/1999/xlink"
version="1.1"
width="297.0022mm" height="210.0072mm" viewBox="0.0000 0.0000 297.0022 210.0072">
-
SVG Image created as Flow_Controller.svg date 2026/06/03 00:08:14
+SVG Image created as Flow_Controller.svg date 2026/06/04 14:19:23
Image generated by Eeschema-SVG
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-
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-
-R4
-R4
-
-
-
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-
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-
-
-
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-
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-10k
-10k
-
-
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-1
-1
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-2
-2
-
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-3
-3
-
-
-
-
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-
-
-
-
-
-J2
-J2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-Conn_01x03_Pin
-Conn_01x03_Pin
-
-
-
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-
-
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-
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-GND
-GND
-
-
-
-
-
-
-
-
-
-
-
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-
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-
-
-
-
-
-
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-
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-
-
-
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-
-
-GND
-GND
-
-
-
-
-
-
-
-
-
-
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-
-
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-C3
-C3
-
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-10n
-10n
-
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-R5
-R5
-
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-
-1k
-1k
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-PWR_FLAG
-PWR_FLAG
-
-
-
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-
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-
-
-
-
-+24V
-+24V
-
-
-
-
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-
-
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-
-
-
-
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-1
-1
-
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-
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-2
-2
-
-
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-
-
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-3
-3
-
-
-
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-
-J3
-J3
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-
-
-Conn_01x03_Pin
-Conn_01x03_Pin
-
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-R3
-R3
-
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-
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-
-
-
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-
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-
-
-
-1k
-1k
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-GND
-GND
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
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-
-
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-
-
-
-R6
-R6
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-
-
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-
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-
-
-10k
-10k
-
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-
-
-
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-
-
-1
-1
-
-
-
-
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-
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-
-
-
-
-3
-
-3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-2
-
-2
-
-
-
-
-
-
-
-
-
-
-
-
-Q1
-Q1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-2N7002
-2N7002
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-GND
-GND
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-GND
-GND
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-H2
-H2
-
-
-
-
-
-
-
-
-
-
-
-
-
-MountingHole for the board
-MountingHole for the board
-
-
-
-
-
-
-
-
-
-
-
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-
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-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-PWR_FLAG
-PWR_FLAG
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
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-
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-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-R1
-R1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-1k
-1k
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-GND
-GND
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-GND
-GND
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-R2
-R2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-10k
-10k
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-GND
-GND
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-1
-1
-
-
-
-
-
-
-
-
-
-
-VCC
-VCC
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-2
-2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-SCL
-SCL
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-3
-3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-SDA
-SDA
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-4
-4
-
-
-
-
-
-
-
-
-*
-*
-
-
-
-
-
-
-
-5
-5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-#
-#
-
-
-
-
-
-
-6
-6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-DOWN
-DOWN
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-7
-7
-
-
-
-
-
-
-
-UP
-UP
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-8
-8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-J4
-J4
-
-
-
-
-
-
-
-
-I2C_OLED_WITH_4_BUTTONS
-I2C_OLED_WITH_4_BUTTONS
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
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-
-
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-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-C4
-C4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-100n
-100n
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-C2
-C2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-10u
-10u
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-+24V
-+24V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-C5
-C5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-1u
-1u
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-1
-1
-
-
-
-
-
-
-
-
-
-
-2
-2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-3
-3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-J1
-J1
-
-
-
-
-
-
-
-
-
-
-Conn_01x03_Pin
-Conn_01x03_Pin
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
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-
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-
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-
-
-
-
-
-
-
-
-
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-
-
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-+3.3V
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-I2C_SDA
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-
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+
SWIO
@@ -19501,6 +19093,773 @@ L124.5601 59.1772
+I2C_SCL
+I2C_SCL
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+
+
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FLOW_PULSE_MCU
@@ -20069,803 +20428,537 @@ L134.4782 67.4625
-ALARM _CNC
-ALARM _CNC
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+I2C_SCL
+
-
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+
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-
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+
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-0,96" OLED Display
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+with 4 buttons
+with 4 buttons
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+Voltage regulator
+Voltage regulator
+
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+WCH-LinkE programmer connection
+WCH-LinkE programmer connection
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+CNC Controller
CNC Controller
@@ -21724,6 +23741,1121 @@ L67.7494 28.0390
+2-Button Resistor Ladder
+2-Button Resistor Ladder
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+ZJ-S401
+ZJ-S401
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+flow sensor
+flow sensor
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Connection to CNC input
@@ -22952,3717 +26084,14 @@ L179.1599 110.4606
" />
-ZJ-S401
-ZJ-S401
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-flow sensor
-flow sensor
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-WCH-LinkE programmer connection
-WCH-LinkE programmer connection
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-Voltage regulator
-Voltage regulator
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-0,96" OLED Display
-0,96" OLED Display
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-with 4 buttons
-with 4 buttons
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-2-Button Resistor Ladder
-2-Button Resistor Ladder
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+
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-C6
-C6
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-100n
-100n
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-GND
-GND
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-+24V
-+24V
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+
+GND
+GND
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+R6
+R6
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+10k
+10k
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+Q1
+Q1
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+2N7002
+2N7002
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+1
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+2
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+2
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+
J4
@@ -30202,6 +30359,100 @@ L257.2960 68.7068
+R1
+R1
+
+
+
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+1k
+1k
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+
GND
@@ -30307,733 +30558,19 @@ stroke-linecap:round; stroke-linejoin:round;">
L242.5700 55.8800
" />
-
-R1
-R1
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-
-3
-
-3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-2
-
-2
-
-
-
-
-
-
-
-
-
-
-
-
-R6
-R6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-10k
-10k
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
-
-
-
-
-
-
-
-
-