In the event of product damage, part failure or firmware issue, the Twiddler will go into an Error state and blink red. Decoding the blinks will allow you to pinpoint the issue.
The LEDs are named when looking at the Twiddler 4 in an upright position.
[LED 1] [LED 2] [LED 3]
First, there is a rapidly flashing LED pattern; followed by a slow-blinking numbered code. Take note of which LEDs are blinking red, they indicate the type of error that is occurring.
| LED 1 | LED 2 | LED 3 | Error Type |
|---|---|---|---|
| RED | 1: Hardware | ||
| RED | 2: Software | ||
| RED | RED | 3: Bluetooth | |
| RED | 4: Initialization |
After the type of failure has been indicated, the Twiddler will slowly blink to indicate the failure point. Each LED will flash 0 to 5 times times representing a digit value of the code number. 1 flash = 1, 2 flashes = 2, and so on. No flashes on a LED is value of zero.
e.g.
LED 1: 2 flashes
LED 2: 1 flash
LED 3: 3 flashes
This represents error code #213
LED 1: 0 flashes
LED 2: 0 flashes
LED 3: 4 flashes
This represents error code #004
Test Case: Power up device WITHOUT connecting U3 (PAW OFN) to J4
Expected Blink Pattern: