Member Lexel is doing small batches of the Texas Avenger FET driver and Narsil is an option.
He’s on his 4th batch because demand was so high. If you look through the other 3 batch threads you’ll find lots of info. I really like narsil, you can choose ramping which has 150 levels that only takes 2.5 to 3 seconds to go through. You can also switch to mode levels which is like low, medium, high, etc. You can choose how many levels you want. You can turn memory on and off. It has a battery check function which blinks out the voltage and a ton of other options. I really like Narsil. Cost is about $20 to $25 in total.
The new BLF Q8 will also come with Narsil.
6 volt led for 8.4v
12 volt led for 16.8v
Here’s my L6 with Lexels driver.