[Guide] Pixel-Perfect Screen Mirroring via USB Tunnel
If you use a Supernote for study or work, you might have noticed that:
- Wi-Fi mirroring is often blocked on university/corporate networks (e.g., eduroam) or suffers from high latency and stutters.
- scrcpy (via USB) can look blurry or "muddy" on high-resolution displays because it treats your notes like a compressed video stream, which smudges fine ink lines and mathematical formulas.
Here is how to get a lossless, crystal-clear mirror of your Manta by tunneling the native web-mirroring service through ADB. This bypasses the Wi-Fi entirely and works over the USB cable.
Prerequisites
- Supernote (Nomad or A-series) with Termux installed.
- PC with ADB installed (Android Platform Tools).
- socat installed inside Termux (
pkg install socat).
The Setup
1. On your Supernote (via Termux)
Make sure "Screen Mirroring" is enabled in the top menu. Open Termux and run the following command (replace YOUR_DEVICE_IP with your actual device IP found in Wi-Fi settings, e.g., 100.113.43.44):
socat TCP-LISTEN:8888,fork TCP:YOUR_DEVICE_IP:8080
Pro-tip: Add alias mirror='socat TCP-LISTEN:8888,fork TCP:YOUR_DEVICE_IP:8080' to your ~/.bashrc to launch this with one word.
2. On your PC (Windows, Mac, or Linux)
Connect the Supernote via USB. Open your Terminal (PowerShell on Windows, Terminal on Mac/Linux) and create the ADB tunnel:
adb forward tcp:8080 tcp:8888
3. View your notes
Open any web browser (Chrome, Firefox, Safari, Edge) and navigate to: http://localhost:8080
Why this is the superior method:
- Pixel-Perfect Quality: Unlike video-based tools (scrcpy), the browser-based mirroring uses high-quality snapshots. Your handwriting will look as sharp as it does on the e-ink device.
- No Network Lag: Since the traffic is encapsulated within the ADB USB protocol, it is invisible to your network's firewall and unaffected by Wi-Fi congestion.
- High-DPI Friendly: Browsers handle UI scaling much better than video renderers. If you have a 4K monitor or use system scaling (150%+), your notes will remain crisp and readable.
Tested and working Linux (CachyOS/Arch) but should work on win and mac too