Last night I tried a Attiny85 on a PD68 Double-down 17mm board for the first time and couldn’t get the 0.1 uF cap across the MCU grnd and VC pins to fix the problem. Also adding the stacked 2nd 10 uF cap didn’t work as well.
I’m testing the driver on the bench, even using a low performing under charged TF Flame cell, and the highest level modes don’t work, and strobe modes don’t work as well (strobe uses full FET). Not sure if it’s just FET full mode, or also the 30%40% 2nd high mode also. I’ll try another 0.1 uF cap to see if it’s just the cap could be.
Boy, sure wish there was someone helping with this trouble-shooting of the 25/45/85 problems. Yes - I’m begging for help again. Also wondering if anyone else is having these problems. Not sure if no one else is working with these MCU’s or just being silent on it.
This behavior of losing all high FET modes is one type of failure. The other is more subtle, where changing modes seems to work for a while then, occasionally resets the MCU - I can tell because in my Narsil firmware, I blink twice with low power on startup.