USB Serial Monitor Lite

USB Serial Monitor Lite


(2 stars)


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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, usb serial monitor lite, usb monitor, serial, usb serial monitor, ftdi serial, シリアル通信, 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
  • (35 stars)

    by sudheer herle on 23/03/2014

    Thanks a lot for the open source solution.

  • (35 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 USB device is very good as well. The only annoying fact is that the buffer is limited to about 5kBytes, and there is no way to increase it. Thi

  • (35 stars)

    by Manni Lim on 07/01/2014

    tested on CDC/ACM with Microchip PIC32MX.

  • (35 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 ways to view the data received for us electronics tinkerers.

  • (35 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 █[2J instead of executing the command and clearing the screen)

  • (35 stars)

    by Pritish singh on 15/11/2013

    Didnt workd with arduino uno

  • (35 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!

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