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+---
+title: Wanderer ETA M54
+categories: ["auxiliaries"]
+description: INDI driver for the WandererAstro ETA M54 Electronic Tilt Adjuster, a 3-point motorized tilt adjustment device for optical train collimation.
+thumbnail: ./wanderer-eta.webp
+---
+
+## Overview
+
+The Wanderer ETA M54 is an ultra-thin (5mm) electronic tilt adjuster with three independently motorized adjustment points. It mounts between optical train components using M54 threads and allows precise tilt correction with 0.001mm resolution over a 0–1.200mm range per point.
+
+The INDI driver communicates via USB serial (CH340 chip, 19200 baud) and provides independent control of all three tilt adjustment motors with real-time encoder position feedback.
+
+## Features
+
+- 3 independent motor position controls (0.000–1.200mm range, 0.001mm step)
+- Real-time encoder position readback
+- Zero All function to return all motors to home position
+- Configuration save/restore (positions are remembered across sessions without triggering motor movement on reconnect)
+- Position verification via continuous status stream polling
+
+## Connection
+
+Connect the Wanderer ETA M54 to a USB port. The device uses a CH340 USB-to-serial adapter.
+
+1. In the **Connection** tab, select the serial port (typically `/dev/ttyUSB0`)
+2. Baud rate is fixed at 19200 (configured automatically)
+3. Click **Connect**
+
+The driver reads the device's continuous status stream to verify the connection and displays the firmware version.
+
+## Main Control
+
+![INDI Control Panel](./images/indi-control-panel.webp)
+
+### Target Positions
+
+Each motor point has its own target position property with an individual **Set** button:
+
+- **Point 1 Target** — Set position for motor 1 (0.000–1.200mm)
+- **Point 2 Target** — Set position for motor 2 (0.000–1.200mm)
+- **Point 3 Target** — Set position for motor 3 (0.000–1.200mm)
+
+Each motor moves independently. Setting one point does not affect the others.
+
+### Current Positions
+
+The **Current Positions** group shows real-time encoder readback from all three motors. These values update automatically every 2 seconds and reflect the actual physical position of each adjustment point.
+
+### Zero All
+
+The **Zero All Points** button moves all three motors to the 0.000mm position sequentially. Use this to return the device to a flat (no tilt) state.
+
+### Firmware
+
+Displays the firmware version reported by the device.
+
+## Operation
+
+### Adjusting Tilt
+
+1. Connect to the device
+2. Set the desired position for one or more points using the individual target fields
+3. Click **Set** next to the point you want to move
+4. The motor moves to the target position; readback updates in real-time
+5. Repeat for other points as needed
+
+The driver waits for each motor to reach its target (within ±0.005mm tolerance) before reporting completion.
+
+### Saving Configuration
+
+To preserve your tilt settings across sessions:
+
+1. Set all points to the desired positions
+2. Go to **Options** → **Save Configuration**
+
+On the next connection, the saved positions are restored as targets without triggering any motor movement. Motors only move when you explicitly click **Set** or **Zero All**.
+
+> [!IMPORTANT]
+> The device does not have absolute position memory across power cycles. When powered on, the motors report their physical position from the encoders. The saved INDI configuration stores your last-used target values for convenience.
+
+## Troubleshooting
+
+| Symptom | Cause | Solution |
+|---------|-------|----------|
+| Timeout reading from device | ETA not powered or wrong port | Check USB connection, verify port in `dmesg` |
+| Unknown device identifier | Wrong WandererAstro device on port | Ensure the ETA (not rotator/cover) is selected |
+| Motor does not reach target | Mechanical obstruction | Check optical train for binding; reduce target value |
+
+## Hardware Specifications
+
+| Parameter | Value |
+|-----------|-------|
+| Interface | USB (CH340 serial adapter) |
+| Baud Rate | 19200 |
+| Thread | M54 × 0.75 |
+| Thickness | 5mm |
+| Travel Range | 0–1.200mm per point |
+| Resolution | 0.001mm |
+| Adjustment Points | 3 (120° spacing) |
+| Power | USB bus powered |
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+# Display Names (Human-Friendly - Required)
+driver_name: Wanderer ETA M54
+manufacturer_name: Wanderer Astro
+
+# Categories (Required - can be multiple)
+categories:
+  - auxiliaries
+
+# Additional Metadata (Optional)
+website: www.wandererastro.com
+executable: indi_wanderer_eta
+platforms: Linux, BSD
+author: Andreas Ruthner
+version: 1.0