Lone Oceans Lume1 FW3X Constant Current Buck-Boost + FET Driver with AUX LED Board

Driver Board: 01/20 Rev B
Aux RGB-LED Board: Rev A

Firmware: https://github.com/loneoceans/lume1-fw3x

Information thread: https://budgetlightforum.com/t/lume1-fw3x-constant-current-buck-boost-fet-driver-with-anduril1-2-rgb-aux/60947

lume1 Driver Feature List

• Input - 1S, e.g. single 18650, specifically since this was designed for the FW3x flashlight (5.5Vmax to 2.7Vmin)
• Output - designed for 1S LEDs (e.g. 1S for FW1x, 1S3P for FW3x etc)
• Regulation:
  • 3.0A Output Constant Current Buck-Boost with 1024-levels of resolution
  • FET on-board for Direct-Drive Turbo with Reverse Current Protection
• 21.7mm Diameter
• 2 Layer PCB, Single-side Components for low cost fabrication and assembly
• Very low stack height to fit in small driver space for FW3x
• Attiny1634 Microcontroller
• ToyKeeper's Open-sourced Anduril Firmware
• HarleyQuinn's 4:2 Pogo-pin Programmer compatibility (intl-outdoor sells programming pogopin kits)
• Overall Board Efficiency >90% for low to high-mid modes (up to 93.5%)
• External temperature sensor IC for better accuracy and precision
• E-switch (for FW3x) with hardware debounce filtering
• Low quiescent current for long standby times
• RGB outputs for optional LED aux board
• 4 additional solder jumper pads (no FW use for them yet, but it's an option for the future)