Fit-statUSB
- fit-statUSB is a programmable fingernail-size color LED that plugs into a USB port.
- fit-statUSB provides status indication by changing the LED color, brightness and color cycle.
- fit-statUSB identifies to the PC as a serial device and changes the LED color by text commands received over the serial port.
- See fit-statUSB product page
Commands
General
Commands to fit-statUSB are sent over serial port. No need to configure the baudrate, fit-statUSB adjusts automatically. Each command ends with a LF and executed immediately.
Set color
#RRGGBB
- RR | GG | BB - HEX value of red, green, blue respectively
fit-statUSB will set the intensity of each of the colors.
Examples:
To set dim green
#001200
To set bright yellow combine red and green
#FFFF00
Set color sequence
Set a sequence of alternating colors. The sequence will cycle endlessly until a new color command is entered.
B#RRGGBB-tttt#RRGGBB....
- RR | GG | BB - HEX value of red, green, blue respectively
- tttt - time until next color is displayed
Examples:
Pulsing red color
B#FF0000-0200#000000-0600
Alternating red-blue
B#FF0000-1000#0000FF-1000
Cycle of red 0.1 sec - yellow 0.1 sec -white 1 sec - off 0.3 sec
B#FF0000-0100#FFFF00-0100#FFFFFF-1000#000000-0300
Set color transition period
Set how quickly current color fades to the next color.
Fnnnn
- nnnn - transition time in mS. Permitted values: 0001 (immediate) to 9999 (slowest transition, 10 seconds)
Transition period is persistent until a new F command is entered.
For B command the F value will determine transition period between colors.
other (less common) commands
- P - Enter Device firmware update mode
- ? - Return device UUID #
- G - Return current color, (rr,gg,bb)
Using fit-statUSB in Windows
Drivers
- Fit-statUSB Windows 7 driver
- Fit-statUSB Windows 8.1 driver
- Additional drivers are not required for Windows 10 operating systems
Using fit-statUSB from terminal
- Open a terminal utility with serial port support (e.g. Teraterm)
- Establish new connection to the serial port assigned to fit-statUSB (in TeraTerm: File --> New connection --> Serial (select COMn: USB Serial Device)
- Type a command, e.g. #FF0000 (fit-statUSB should turn RED)
Note there is no command editing (no backspace / delete). If you mistype please start a new command.
Using fit-statUSB from command line
echo [command] > \\.\[com port]
- [command] - the command sent to fit-statUSB over serial
- [com port] - the COM port assigned to fit-statUSB
Example: Assuming fit-statUSB is on COM10 the following command will set fit-statUSB color to red:
echo #FF0000 > \\.\COM10
Detect COM port of fit-statUSB
From Device Manager
Under device manager | Ports (COM & LPT)
look for
USB Serial Device (COMn)
- n - COM port number
From command line
To identify which COM port is assigned to fit-statUSB use mode command
mode
You will receive a list of COM ports. fit-statUSB listing on COM10 looks like that:
Status for device COM10: ------------------------ Baud: 9600 Parity: None Data Bits: 8 Stop Bits: 1 Timeout: ON XON/XOFF: OFF CTS handshaking: OFF DSR handshaking: OFF DSR sensitivity: OFF DTR circuit: OFF RTS circuit: OFF
PowerShell
powershell "$fitstatUSB= new-Object System.IO.Ports.SerialPort [com port]; $fitstatUSB.open(); $fitstatUSB.WriteLine('[command]'); $fitstatUSB.Close()"
- [command] - the command sent to fit-statUSB over serial
- [com port] - the COM port assigned to fit-statUSB
Example: Assuming fit-statUSB is on COM10 the following command will set fit-statUSB color to red:
powershell "$fitstatUSB= new-Object System.IO.Ports.SerialPort COM10; $fitstatUSB.open(); $fitstatUSB.WriteLine('#FF0000'); $fitstatUSB.Close()"
Using fit-statUSB in Linux
Using fit-statUSB from terminal
Using Bash Command line
- First you need to configure the Serial port
sudo stty -F /dev/ttyACM0 9600 raw -echo -echoe -echok -echoctl -echoke
- Send the command directly to the TYY port
echo "B#FF0000-1000#00FF00-500" > /dev/ttyACM0
- Please note that some Linux distributions will require sudo privileges to echo directly to serial
Sample Python code
- Python dependencies: pyserial
import serial
ser = serial.Serial("/dev/ttyACM0") ser.write(b"B#FF0000-500#00FF00-500#0000FF-500\n") ser.close()
- Note that new line must be addded at the end of the command String
Detect fit-statUSB Serial Port
To Detect the system assigned TTY device:
sudo dmesg
Look for fit_StatUSB String and its assigned TTY device
