fitbit aria

Contains some informations about the serial port commands on the fitbit aria scale.

Serial port

UART on UART1 Baud: 115200 Data bits: 8 Stop bits: 1 Parity: None Pin out (standard TTL-232RG):

Pin out (standard TTL-232RG):

Do not use navigations keys (arrow keys) nor delete or backspace.
Commands results end with END.
Enter should process the latest commmand
Console may not work while the device is sleeping, you have to wake it up (the only know way I know it to step into it)

This documentation is based on manual tests and not by reverse engineering the firmware

fwver : Return the firmware version
hwrev : Return the hardware version?
deviceid : Return versions
bat : Return battery informations
lcdtext : Display text on the screen (case sensitive) Know character availables :
- a = display a checkbox
- -- = display ...
- A-Z
- 0-9
- /
- .
- !
- %
- ?
- (
- )
lcdpat <hexa value from 0 up to FFFF> : Allow you to manually control some lcd segments
- bit 1: display a "x" and refresh icon as well as the upper rounded bar (where pixels are alternatively on and off)
- bit 2 to 7 display one line of the text line (2 is the top line and 7 is the bottom line; where pixels are alternatively on and off in the same line)
- bit 8 Display the "wifi" icon, the no battery icon and the upper rounded bar (where pixels are alternatively on and off)
icon <0 from 16> specific led of the upper rounded bar to turn off. 0 hide the bar while 16 display it full
pbar <value between 0 up to 16> : Allow you to control the upper rounded bar (the bar use to display the progression when "thinking"). LCD will turn on from the left to right.
pwm <value from 0 to 10> : control the brightness of the screen getsn : Get serial number of the device getmac : Get the mac address setcolor : getcolor : setunits : getunits : weigh : return 2 weights The first one is probably the weight with the tare and unit managed while the second is the raw value. htcmd : send a raw command to the HT16C23 (lcd driver) scan : Scan wifi available