205 lines
6.9 KiB
Markdown
205 lines
6.9 KiB
Markdown
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# AON3D M2+ Wiring Guide - BTT Octopus Pro v1.0.1
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## Motor Driver Connections (External DM542T)
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Since you're using external DM542T drivers, only **STEP**, **DIR**, and **ENABLE** signals are needed from the Octopus Pro. The drivers handle their own current and microstepping via DIP switches.
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### Motor Pin Assignments
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| Motor | Function | Octopus Header | STEP Pin | DIR Pin | ENABLE Pin |
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|-------|----------|----------------|----------|---------|------------|
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| MOTOR0 | X Axis (Carriage 0) | MOTOR0 | PF13 | PF12 | PF14 |
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| MOTOR1 | X2 / Dual Carriage | MOTOR1 | PG0 | PG1 | PF15 |
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| MOTOR2 | Y Axis | MOTOR2 | PF11 | PG3 | PG5 |
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| MOTOR3 | Y1 Axis | MOTOR3 | PG4 | PC1 | PA0 |
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| MOTOR4 | Z Axis | MOTOR4 | PF9 | PF10 | PG2 |
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| MOTOR5 | Z1 Axis | MOTOR5 | PC13 | PF0 | PF1 |
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| MOTOR6 | Extruder 0 | MOTOR6 | PE2 | PE3 | PD4 |
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| MOTOR7 | Extruder 1 | MOTOR7 | PE6 | PA14 | PE0 |
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### DM542T Wiring per Motor
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```
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Octopus Pro Motor Header DM542T Driver
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======================== =============
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STEP (pin 2) ───────────────► PUL+
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GND (pin 1) ───────────────► PUL-
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DIR (pin 3) ───────────────► DIR+
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GND (pin 1) ───────────────► DIR-
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EN (pin 4) ───────────────► ENA+
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GND (pin 1) ───────────────► ENA-
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```
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**Note:** The Octopus Pro motor headers have a 4-pin connector:
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- Pin 1: GND
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- Pin 2: STEP
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- Pin 3: DIR
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- Pin 4: EN (active low)
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---
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## Endstop Connections
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| Endstop | Function | Octopus Pin | Header |
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|---------|----------|-------------|--------|
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| DIAG0 | X Min (Carriage 0) | PG6 | DIAG0 |
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| DIAG1 | X Max (Dual Carriage) | PG9 | DIAG1 |
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| DIAG2 | Y Min | PG10 | DIAG2 |
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| DIAG3 | Y1 (optional) | PG11 | DIAG3 |
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| DIAG4 | Z Min | PG12 | DIAG4 |
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| DIAG5 | Z1 (optional) | PG13 | DIAG5 |
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| Probe | Bed probe | PG15 | PROBE |
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### Endstop Wiring
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```
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Endstop Switch Octopus Pro
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============== ===========
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Signal ─────────────────► S (Signal)
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GND ────────────────────► G (Ground)
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(VCC optional) ─────────► V (+5V for powered sensors)
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```
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---
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## Heater Connections
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| Heater | Function | Octopus Pin | Header | Max Current |
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|--------|----------|-------------|--------|-------------|
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| HE0 | Extruder 0 Hotend | PA2 | HE0 | 5A |
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| HE1 | Extruder 1 Hotend | PA3 | HE1 | 5A |
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| HE2 | Chamber Heater | PB10 | HE2 | 5A |
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| HB | Heated Bed | PA1 | HB | 10A (use SSR for high power beds) |
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**Important:** For high-power heated beds (>10A), use a Solid State Relay (SSR) controlled by the HB output.
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---
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## Thermistor Connections
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| Sensor | Function | Octopus Pin | Header |
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|--------|----------|-------------|--------|
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| T0 | Extruder 0 Temperature | PF4 | TH0 |
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| T1 | Extruder 1 Temperature | PF5 | TH1 |
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| T2 | Chamber Temperature | PF6 | TH2 |
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| TB | Bed Temperature | PF3 | TB |
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### Thermistor Wiring
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```
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Thermistor Octopus Pro
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========== ===========
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Wire 1 ─────────────────► T (Thermistor signal)
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Wire 2 ─────────────────► G (Ground)
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```
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---
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## Fan Connections
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| Fan | Function | Octopus Pin | Header |
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|-----|----------|-------------|--------|
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| FAN0 | Part Cooling (optional) | PA8 | FAN0 |
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| FAN1 | Part Cooling 2 (optional) | PE5 | FAN1 |
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| FAN2 | Chamber/Enclosure Fan | PD12 | FAN2 |
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| FAN3 | Hotend Fan 0 (optional) | PD13 | FAN3 |
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| FAN4 | Hotend Fan 1 (optional) | PE4 | FAN4 |
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---
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## Power Connections
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### Main Power Input
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- **VIN**: 24V DC (or your system voltage)
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- **GND**: Ground
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### Motor Power
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- The DM542T drivers have their own power input - connect them to your 24-48V power supply as per DM542T specifications.
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---
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## DM542T DIP Switch Settings
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Set the DIP switches on your DM542T drivers to match the Klipper configuration:
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### Microstepping (match `microsteps` in config)
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| Microsteps | SW5 | SW6 | SW7 | SW8 |
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|------------|-----|-----|-----|-----|
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| 16 (X,Y,E) | OFF | ON | ON | OFF |
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| 4 (Z axes) | ON | ON | OFF | OFF |
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### Current Setting (adjust for your motors)
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Refer to DM542T documentation for current settings based on your stepper motor specifications.
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---
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## Octopus Pro v1.0.1 Header Layout
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```
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┌─────────────────────────────────────────────────────────────┐
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│ BTT OCTOPUS PRO v1.0.1 │
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├─────────────────────────────────────────────────────────────┤
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│ │
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│ [MOTOR0] [MOTOR1] [MOTOR2] [MOTOR3] [MOTOR4] │
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│ X X2 Y Y1 Z │
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│ │
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│ [MOTOR5] [MOTOR6] [MOTOR7] │
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│ Z1 E0 E1 │
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│ │
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│ [HE0] [HE1] [HE2] [HB] ← Heater outputs │
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│ │
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│ [TH0] [TH1] [TH2] [TB] ← Thermistor inputs │
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│ │
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│ [FAN0-5] ← Fan outputs │
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│ │
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│ [DIAG0-7] ← Endstop/diagnostic inputs │
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│ │
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│ [PROBE] ← Probe input │
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│ │
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│ [USB] [POWER] │
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│ │
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└─────────────────────────────────────────────────────────────┘
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```
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---
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## Flashing Klipper to Octopus Pro
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1. SSH into your Raspberry Pi:
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```bash
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ssh pi@192.168.86.20
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```
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2. Build Klipper firmware:
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```bash
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cd ~/klipper
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make menuconfig
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```
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3. Configure for Octopus Pro v1.0.1:
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- Micro-controller: **STMicroelectronics STM32**
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- Processor model: **STM32F446**
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- Bootloader offset: **32KiB bootloader**
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- Clock Reference: **12 MHz crystal**
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- Communication interface: **USB (on PA11/PA12)**
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4. Build:
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```bash
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make clean
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make
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```
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5. Flash via SD card:
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- Copy `out/klipper.bin` to SD card as `firmware.bin`
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- Insert SD card into Octopus Pro
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- Power cycle the board
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6. Find the serial port:
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```bash
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ls /dev/serial/by-id/*
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```
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7. Update `printer.cfg` with the correct serial port.
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