Alt: error color codes
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Alt: error color codes

The current state of the Alt tracker, including error states, is represented by LED indication. These states are encoded using two features: the LED color and the LED pulse.
The normal tracker states and firmware update mode are described in the main article about an Alt.

Error mode

The Alt enters an error mode in cases of electronic component failure, missing configuration data, firmware error, or incorrect use.
The error is displayed as a recurring series of colored LED pulses, with a 2-second pause between cycles.
The pulse number indicates the number of the subsystem in which the error occurred.
The pulse color indicates the error number within the subsystem.
The tables below outline the subsystems in which an error can occur, along with the color matching of the error sequence number:
NumberSubsystem nameSubsystem description
#0
FpgaSubsystem
An error within the subsystem indicates there are issues with the FPGA.
#1
CameraSubsystem
An error can occur within the subsystem if the tracker’s power beign off during a firmware update. A possible solution is to attempt re-updating the Alt's firmware.
#2
ImuSubsystem
An error within the subsystem indicates issues during the initialization of the accelerometer or gyroscope.
Error code #0 (Lime color) means no errors in the current subsystem.
ColorSubsystem error numberText description of the color
0
Lime (0x00, 0xff, 0x00)
1
Red (0xff, 0x00, 0x00)
2
Blue (0x00, 0x00, 0xff)
3
Fuchsia (0xff, 0x00, 0xff)
4
Yellow (0xff, 0xff, 0x00)
5
White (0xff, 0xff, 0xff)
6
Silver (0xc0, 0xc0, 0xc0)
7
Navy (0x00, 0x00, 0x80)

Examples

DisplayHow to decrypt
No errors (i.e. error #0) in subsystem #0, error #1 in subsystem #1, no errors (#0) in subsystem #2.
Error #3 in subsystem #0, no errors (#0) in subsystem #1, no errors (#0) in subsystem #2.
No errors (#0) in subsystem #0, no errors (#0) in subsystem #1, error #4 in subsystem #2.