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Groups > alt.comp.microsoft.windows > #3421

PSA: Batch script mirroring Android on the desktop over Wi-Fi (without USB)

Cross-posted to 3 groups.

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  :: adbconnect.bat 
  ::  No-USB, Wi-Fi only, adb/scrcpy static IP and static 5555 port connect
  :: v1p0 20260611 converted adbconnect.vbs to adbconnect.bat
  ::  Connects desktop & phone over adb & mirrors phone on the monitor
  ::  No USB cord is used in this process as it's all done over Wi-Fi
  ::  Should work even if either the PC and/or the phone is rebooted
  ::  The script will ask only for the minimum amount of data needed
  ::  Change the phone static IP address as needed to fit your LAN IP address
  :: v1p1 20260611 reliability improvements added to v1p0
  ::   Added better device lookup (skip header,ignore blanks,avoid false matches)
  ::   Added retry logic for adb pair & adb connect (for when phone not ready)
  ::   Improved polish (consistent quoting, stable scrcpy launch)
  :: v1p2 20260611 further reliability improvements added to v1p1
  ::   Use separate retry counters for pair/connect to avoid loop 
  ::   interference (ATTEMPTS_PAIR, ATTEMPTS_CONN)
  ::   Added fail-fast with clear error codes and user hints after retry 
  ::   exhaustion
  ::   Added a detection of the device id after initial connect 
  ::   (handles ephemeral adb ports like 192.168.1.4:54321)
  ::   Use DEVICE_ID for subsequent -s tcpip command (quoted) 
  ::   to avoid parsing issues with colons
  ::   Fallback device-id lookup when initial pattern match fails 
  ::   (robust parsing of "adb devices")
  ::   Consistent quoting of %ADB% and device identifiers to avoid 
  ::   CMD parsing errors
  :: v1p3 20260612 moved the pipe outside the FOR command for reliability
  :: v1p4 20260612 divorced the console from the mirrored Android image
  ::   so that either can be killed by the user and the other will remain
  @echo off
  setlocal enabledelayedexpansion
  
  set PHONE_IP=192.168.1.4
  set SCRCPY_OPTS=--keyboard=sdk --always-on-top
  
  echo.
  echo === ADB Wireless Auto-Connect ===
  echo Phone IP: %PHONE_IP%
  echo.
  
  REM 1. Find adb
  for /f "delims=" %%A in ('where adb 2^>nul') do (
  if not defined ADB set ADB=%%A
  )
  
  if not defined ADB (
  echo [ERROR] adb.exe not found.
  exit /b
  )
  
  REM Ensure .exe extension
  if /i not "%ADB:~-4%"==".exe" set ADB=%ADB%.exe
  
  echo Using ADB: "%ADB%"
  echo.
  
  REM 2. Check if already connected
  echo Checking existing ADB devices...
  
  REM v1p1 fixed device lookup:
  REM  a. skip header line
  REM  b. ignore blank lines
  REM  c. only process lines containing digits
  REM  d. avoid CMD parser bugs by NOT piping inside the FOR command
  REM v1p3 moved pipe OUTSIDE the for loop
  :: for /f "skip=1 tokens=1" %%D in ('"%ADB%" devices') do (
  
  set DEVICE_ID=
  for /f "skip=1 tokens=1" %%I in ('"%ADB%" devices') do (
      echo %%I | findstr /R "[0-9]" >nul && (
          echo %%I | findstr /I "%PHONE_IP%" >nul && (
              if not defined DEVICE_ID set DEVICE_ID=%%I
          )
      )
  )
  
  if defined DEVICE_ID (
      echo Already connected on %DEVICE_ID%
      goto RUN_TCPIP
  )
  
  echo %%D | findstr /R "[0-9]" >nul && (
  echo %%D | findstr /i "%PHONE_IP%" >nul && (
  echo Already connected on %%D
  set DEVICE_ID=%%D
  goto RUN_TCPIP
  )
  )
  )
  
  echo Not connected. Need to pair.
  echo.
  
  REM 3. Ask user for pairing info
  set /p PAIR_PORT=Enter Wireless debugging pairing port (shown on phone):
  set /p PAIR_CODE=Enter Wireless debugging pairing code (shown on phone):
  set /p DEBUG_PORT=Enter Wireless debugging debug port (shown on phone):
  
  echo.
  echo Pairing with: %PHONE_IP%:%PAIR_PORT%
  
  REM Retry logic for adb pair (3 attempts)
  set ATTEMPTS_PAIR=0
  :PAIR_RETRY
  set /a ATTEMPTS_PAIR+=1
  "%ADB%" pair %PHONE_IP%:%PAIR_PORT% %PAIR_CODE%
  if errorlevel 1 (
  if !ATTEMPTS_PAIR! lss 3 (
  echo Pair failed, retrying...
  timeout /t 2 >nul
  goto PAIR_RETRY
  ) else (
  echo [ERROR] adb pair failed after %ATTEMPTS_PAIR% attempts.
  echo Hint: Open Wireless debugging -> "Pair device with pairing code" on
the phone, then re-run this script.
  exit /b 1
  )
  )
  echo.
  
  echo Connecting to debug port: %PHONE_IP%:%DEBUG_PORT%
  
  REM Retry logic for adb connect (3 attempts)
  set ATTEMPTS_CONN=0
  :CONNECT_RETRY
  set /a ATTEMPTS_CONN+=1
  "%ADB%" connect %PHONE_IP%:%DEBUG_PORT%
  if errorlevel 1 (
  if !ATTEMPTS_CONN! lss 3 (
  echo Connect failed, retrying...
  timeout /t 2 >nul
  goto CONNECT_RETRY
  ) else (
  echo [ERROR] adb connect %PHONE_IP%:%DEBUG_PORT% failed after
%ATTEMPTS_CONN% attempts.
  echo Hint: Ensure phone is on the same Wi-Fi and Wireless debugging
pairing UI is active.
  exit /b 2
  )
  )
  echo.
  
  REM After connect, get the actual device id reported by adb (handles
ephemeral ports)
  set DEVICE_ID=
  for /f "tokens=1" %%I in ('"%ADB%" devices ^| findstr /R /C:"%PHONE_IP%[:
]"') do (
  if not defined DEVICE_ID set DEVICE_ID=%%I
  )
  
  if not defined DEVICE_ID (
  REM fallback: try to find any non-empty device id line
  for /f "skip=1 tokens=1" %%I in ('"%ADB%" devices') do (
  echo %%I | findstr /R "[0-9]" >nul && if not defined DEVICE_ID set
DEVICE_ID=%%I
  )
  )
  
  if defined DEVICE_ID (
  echo Found device id: "%DEVICE_ID%"
  ) else (
  echo [WARN] No device id found after connect. Continuing using
%PHONE_IP%:%DEBUG_PORT% for tcpip attempt.
  set DEVICE_ID=%PHONE_IP%:%DEBUG_PORT%
  )
  
  echo Switching to TCP/IP 5555...
  "%ADB%" -s "%DEVICE_ID%" tcpip 5555
  echo.
  
  echo Connecting final port: %PHONE_IP%:5555
  "%ADB%" connect %PHONE_IP%:5555
  echo.
  
  set DEVICE_ID=%PHONE_IP%:5555
  goto RUN_SCRCPY
  
  :RUN_TCPIP
  echo Switching device !DEVICE_ID! to TCP/IP 5555...
  "%ADB%" -s "%DEVICE_ID%" tcpip 5555
  "%ADB%" connect "%PHONE_IP%:5555"
  goto RUN_SCRCPY
  
  :RUN_SCRCPY
  :: Launch scrcpy in a detached process so the console can be killed
  :: v1p4 Divorced the console from the mirrored image and vice versa
  :: start "" /B scrcpy.exe --tcpip=%PHONE_IP% %SCRCPY_OPTS% >nul 2>&1
  echo Launching scrcpy...
  start "" scrcpy.exe --tcpip=%PHONE_IP% %SCRCPY_OPTS% >nul 2>&1
  echo(
  exit /b
  
  REM end of adbconnect.bat
-- 
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PSA: Batch script mirroring Android on the desktop over Wi-Fi (without USB) Maria Sophia <mariasophia@comprehension.com> - 2026-06-12 16:22 -0500
  Re: PSA: Batch script mirroring Android on the desktop over Wi-Fi (without USB) Maria Sophia <mariasophia@comprehension.com> - 2026-06-15 14:20 -0500
    Re: PSA: Batch script mirroring Android on the desktop over Wi-Fi (without USB) Maria Sophia <mariasophia@comprehension.com> - 2026-06-15 14:31 -0500

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