Stop typing the same commands
Write the steps once: send, wait for the reply, check it. Run them with one tap and get PASS or FAIL, with every reply time.
LinkJigAndroid and Windows
Talk to your device. Then turn it into a test.
LinkJig connects over USB serial, Bluetooth LE and TCP, shows every byte you send and receive, and replays the exchange as a pass/fail test, at your desk or in the field.
Free. The tool never shows ads. No account, no cloud, no analytics.
- Works offline
- No account, no analytics
- Tested on real hardware
- In 5 languages
See every byte before it leaves
ASCII and HEX side by side, line endings visible, CRC-16/Modbus added for you. What goes on the wire is never a guess.
Ready-made modules
Check an ESP8266, scan Wi-Fi, start a TCP server: guided tasks with every step checked, tested on real boards.
Build at the desk, run in the field
Profiles, macros, triggers and scenarios travel in one project file. Prepare it on Windows, run it from your phone over USB-OTG.
Connects to
Windows: serial ports and USB-serial adapters, Bluetooth LE, USB HID and TCP. Android: USB-serial adapters over USB-OTG (CP210x, CH34x, FTDI, PL2303), Bluetooth LE and TCP. A built-in demo device lets you try everything without hardware.
Guides
Step-by-step guides, tested on real hardware, each with a short video.