Temperature
The LEDs used for the lights can get very hot very quickly. It is important that the temperature of the lights stays within limits that will not interfere with the functionality of any nearby circuits, and will not pose a safety hazard.
Below is a graph displaying the temperature of revision 3 of the tail light prototypes over time.
A temperature probe was used to measure the temperature. PWM was at approximately 50% duty cycle. No enclosures were used during testing.
The temperature stabilized at around 47 C after approximately 15 minutes.
Next steps would include testing the lights in an enclosure.