AV-H08
Serial Monitor
A browser serial terminal for ESP32, Arduino and STM32 boards: read text or hex, send commands, reset the board, save the log.
● Runs on your device; nothing is uploadedHow to use it
- Set the baud rate and, if needed, data bits, stop bits, parity and flow control.
- Click Choose port and connect, then pick your board in the browser’s list.
- Watch the output; turn on Timestamps or Hex view, or Pause view to read.
- Type in Send and press Enter, choosing a line ending or Hex mode.
- Use Reset board to restart an ESP32 or Arduino, and Save log to download what was received.
Limits
- Browsers
- Desktop Chrome, Edge, Opera (Web Serial), HTTPS or localhost
- Baud rate
- 50–10,000,000
- Log kept in memory
- 20,000 lines or 2 MB, oldest dropped
- Lines shown at once
- 2,000 (Save log includes all kept)
- Hex view
- Last 64 KB received
- One send
- 64 KB
- Send history
- 50 entries
Features
- UTF-8 decoding that copes with characters split across USB packets
- Line splitting on CR, LF or CR LF, with per-line timestamps
- ESP32/ESP8266 restart and bootloader-entry sequences, and the Arduino DTR reset
- Strips ESP-IDF colour codes; can show control characters
- Handles unplugging cleanly and releases the port when you leave the page
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