Hardware-Based Screen Recorder.
Telescreen is installed between the HDMI port and the screen. It can:
- Periodically capture screen images and save them to a MicroSD card
- Enable live screen streaming for remote monitoring
- Filter blank frames and remove near-duplicate captures
- Provide Wi-Fi access in AP mode or connect to an existing Wi-Fi network
- Support up to 3840x2160 @ 30Hz and 1920x1080 @ 60Hz on HDMI loop-out, and 1920x1080 @ 50Hz on capture
- Hardware-based, invisible to antivirus
Format the MicroSD card as FAT32 and insert it into the card slot. Connect the power cable, the HDMI input cable on the computer side, and the HDMI output cable on the monitor side.
The device takes about 1 minute to boot. Then connect to the default Wi-Fi hotspot and open the management page:
SSID: Telescreen_XXXXXX (last 6 digits of the MAC address)
Password: telescreen
Management page: http://192.168.8.1
Management password: telescreen
Change the password after signing in. The new password is shared by the management page, SSH, and LuCI.
The management page includes:
Live: view the HDMI live stream.
Album: view and download saved images.
Settings: configure resolution, frame rate, image quality, capture interval, and deduplication parameters.
System: configure Wi-Fi, change password, format the SD card, view logs, and reboot the device.
Firmware download: v1.2 (2026-08-10)
The hardware design of Telescreen is open-sourced on OSHWHub. See here.
Hardware assembly, firmware build, and flashing instructions are documented in Manufacturing.md.
- This firmware requires hardware version 1.2 or later and is not compatible with version 1.1 hardware
- Redesigned the Web console
- Fixed power-inductor overheating
- Improved HDMI IN connector stability when the cable moves
- Improved MicroSD card compatibility
Initial release.