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Hardware options
Ascend mini PC
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升腾小主机 on Pinduoduo. Official EC purchases use Ascend C92, 8 GB RAM, 120 GB disk (¥217). Lower configs (¥150) also work
- After installing Ubuntu Server, tests show ~20 phones — about ¥7.5/phone at ¥150/20. Higher density not fully tested
- Far cheaper than MCU or Bluetooth kits — recommended
Motherboard PC conversion
- Some motherboard chassis include a small PC — convert it to Ubuntu Server and install HID host; works well in practice
Desktop PC
- Unused desktops can run Ubuntu Server as the HID host
Other
- Any host you can convert to Ubuntu Server works
Install Ubuntu Server
Install HID host
- After Ubuntu is ready, in the mirroring app open HID host → Install HID host
- Enter the Ubuntu IP range, username, and password, then install
- On success, the HID service auto-starts after reboot
HID intranet penetration
- For cross-network access, the mirroring app provides HID intranet penetration
- See Set up intranet penetration
- After mirroring penetration succeeds, HID is included — open
public-IP:8989 to browse the local HID host
HID networking
- Open HID host → Advanced networking → Broadcast scan or enter an IP range to scan
- After scanning, HID hosts report data to this machine
- Click Activate HID mode on the host to start activation
Use HID for mirroring
- After host setup and networking, you can mirror
- Details: HID mirroring
Use HID in scripts
- On LAN, use setHidCenter to point at this machine’s LAN IP
- Over WAN via penetration, set the address to
public-IP:8989