Alternate firmware for LED Candle


We've added an alternative firmware for the null to the git repository.

The firmware is courtesy of madworm, and features a much slower flickering style than our original firmware. This firmware uses PWM to modulate the LED brightness, and the PWM duty cycle is changed pseudo-randomly to simulate the flickering.

We will continue to ship the LED candle with our original firmware, but we wanted to add this firmware as well since it both demonstrates a different method for simulating flickering but also gives a visibly different flickering style.

The original firmware is found in the firmware subfolder, and the new firmware is in firmware_pwm. An ISP programmer is required to flash the firmware. Also note that the two firmwares use different fuse settings, so to program, first change to the desired directory, then do "make fuse flash".