After modding a few FW3As, I wanted to try modding an FW1A. The light I sourced for this was, in fact, an FW1A Pro. As with my FW3A mods, I wanted to add AUX LEDs to the light, which also meant swapping the reflector for a TIR optic. I also decided to swap out the CREE XHP50.2 emitter with a 3000K SFT40.
To support 3-channel AUX LED colours and fully-featured Anduril 2, I upgraded the FET+7+1 driver with an ATTiny 1616. A custom Anduril 2 build was needed with reduced FET output for the single emitter, so I used the same build I used for my 219B FW3A “mule”. The light will be used only with a Samsung 35E.
The single-emitter tri-LED AUX board needed quite a bit of filing down to fit, especially since the cutouts for the wires didn’t match the cutouts on the FW1A Pro MCPCB.
I chose orange, purple and ice-blue AUX LEDs which, as usual, were very fiddly to mount on the AUX board. It took me quite a few tries to find the right resistor values to balance the colours.
I originally wanted to use a Ledil Leila TIR optic, but couldn’t get it to fit properly with the 5050 emitter footprint. Instead, I used the beaded TIR from a custom stainless steel FW1A mod I purchased on reddit a while ago, using the Ledil Leila optic in that light instead.
The optic gives a nice beam with the 3000K SFT40. Not a pure thrower, but a practical one.
I think this mod has turned out pretty well. I don’t think this will be my last FW1A mod.
More pics…
