USB Serial Monitor Lite

USB Serial Monitor Lite

10,000 - 50,000 downloads

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View bigger - USB Serial Monitor Lite for Android screenshot
View bigger - USB Serial Monitor Lite for Android screenshot
View bigger - USB Serial Monitor Lite for Android screenshot
It's a very simple USB-Serial Monitor.

* I tested CDC-ACM with Arduino UNO, MEGA, mbed.
test report : NXP LPC1769(thanks to mark)
When you connect a CDC-ACM device to Android, please select Menu -> Open Device.
If you have checked operation, please send me message.

- support CDC-ACM protocol(Arduino, mbed, PSoC etc.)(beta)New!
- support FTDI chips
- Baud rate (1200 - 115200 bps)
- Data bits, Parity Check, Stop bits, flow control, break options(not support in CDC-ACM)
- Display in character/decimal/hex notation.
- send a result by e-mail
- send/receive Linefeed code(CR/LF/CR+LF)
- font size option

You can connect Android to Arduino UNO.
And if you have an FTDI USB-Serial adapter(FT232RL), any microcomputers can be connect to Android by using this application.

Connection Examples
Android--Arduino UNO

Android--[USB-Serial Adapter]--Microcomputer

USB-Serial adapter
Sparkfun - FTDI Basic Breakout

support FTDI chips
- FT232RL
- FT230X

Q: Why my phone/tablet(Android 3.1 or upper) is incompatible?
A: Maybe, your phone/tablet does not have a USB Host API feature.

Q: But my phone/tablet supports a USB thumb drive, USB mouse and USB keyboard.
A: It's not a USB Host API. It's a Linux USB Host. Please check to see if your phone/tablet have a USB Host API.

Q: Can I get binary or source code?
A: Yes, It's open source. Please check my github page.

Q: How much max output current is?
A: smartphone type : 150 - 180mA(Galaxy Nexus, Galaxy S2)
tablet type : 400mA - 500mA? (ICONIA A500, Nexus 7)



TwitterID: @ksksue

Tags: serial monitor, usb serial monitor lite, usb serial, usb monitor, serial, usb serial monitor, シリアル通信, ftdi serial, usb serial adapter, ft232rl.

Recently changed in this version

-bug fix

- Show a title bar(cannot select a menu button on a Nexus 7)

- Added a Word List menu.
- Added a Typeface Setting.
- Move a "Linefeed Code Setting" from a "Display Settings" to a "Serial Settings".
- Added any bigger font size.
- Hide a title bar on ICS or higher.(not on Honeycomb)

- Added CloseDevice menu
(Arun's pull request on github. thanks to Arun)

old changelog

Comments and ratings for USB Serial Monitor Lite
  • (70 stars)

    by sudheer herle on 23/03/2014

    Thanks a lot for the open source solution.

  • (70 stars)

    by Christophe Vermeulen on 10/02/2014

    I was looking for an Android app to monitor my wireless arduinos (panstamps) activities. I tried a few, and this one is the best of the pack : the ability to send the buffer by email is very nice, and its ability to start automatically when connecting the

  • (70 stars)

    by Manni Lim on 07/01/2014

    tested on CDC/ACM with Microchip PIC32MX.

  • (70 stars)

    by Orlando Da Silva on 22/12/2013

    Plugged in to my Polaroid Tablet. Checked coms by shorting pin 2 and 3 and it certainly only returned the coms when there was a short. Would be nice to have more then just ASCII strings. Binary Decimal hexadecimal would be nice too as well as alternative

  • (70 stars)

    by Carlos Sanza on 18/12/2013

    Works fine with FTDI CHIPI-X usb2rs232 interface. Only an issue: terminal does not recognise ANSI escape sequences, such as clear display or move cursor position (sequences starting with {ESC}[ are displayed: for example â–ˆ[2J instead of executing the co

  • (70 stars)

    by Pritish singh on 15/11/2013

    Didnt workd with arduino uno

  • (70 stars)

    by Daniel Hadad on 24/09/2013

    Works with FRDM-KL25Z with mbed program. Only seems to work up to 9600 baud though. Only app that appeared to work! Would love to have this work faster!