This is a ~12mm driver with all of the features and performance of the bigger FET drivers--in a tiny package.
Why buy this driver? The answer is simple: pure performance and quality. We design, assemble, and test these drivers in-house in the USA using the best components available for the job.
We use only fresh, traceable high-qualtiy components from reputable manufacturers because we want these drivers to work great not only today, but in ten or twenty years from now. All boards are reflowed in a J-STD-020 compliant reflow oven using high-quality solder paste.
Should I Choose This or the MTN-10/11/12DD?
While the components and performance are the same, the main differences are the driver outline and the non-exposed and removed copper around the component side border. In short:
This is advantageous in a twisty light, because it is easier to electrically isolate the driver from the pill; however, for a clicky light, if the battery tube does not touch the driver or you can't solder to the pill, then this is not a good choice because you will have a difficult time getting a good ground. The regular MTN-11/12DD is much better in these scenarios due to the exposed copper on the component side of the driver.
This driver features fast PWM and comes with pre-soldered silicone leads. The 12mm driver does not include a spring, since most small lights do not need or have room for one.
Because each driver is hand built and tested, this driver may take up to 10 business days to build, test, and ship.
PCB Thickness Option
The fact is that some small lights need thinner PCBs, while others need thicker PCBs! We now offer both 0.8mm (thin) and 1.6mm (standard) PCB thicknesses in the 12mm FET driver!
Standard Clicky Firmware Options
Mode Order. Please choose whether you want L-->H (ascending) or H-->L (descending) mode order at checkout. (N/A for guppydrv; if no mode order is chosen, L-->H will be programmed).
Standard Clicky Firmware Low Voltage Protection. At around 3V under load, the light will blink three times then step down the power level. At around 2.8V under load the light will blink ten times then shut off. This system gives you ample warning and attempts to extend runtime before turning the light off.
Universal guppydrv Clicky Firmware Option
This firmware allows the ultimate in user customizability, with 24 built-in mode groups, that the user can select via a series of button presses and a user programmable turbo timer that will automatically step the power down to 50% after the set time is hit (see below for instructions).
Low voltage protection: With 1S cells (non-zener mod) the light will begin to step down output at around 2.8v under load. The light will not shut completely off, but will continue to run at a moonlight level.
User Selectable Groups:
To switch mode groups: rapidly tap the switch 8 times, the light will then enter the programming mode and begin to flash. With the light in programming mode, tap the switch the same number of times as your desired mode group. The light will blink and your mode group will be memorized.
Example: To select mode group 3, tap the switch 8 times quickly to enter programming mode. As soon as the light enters programming mode and beings flashing, tap the switch three times. The light will blink to recognize the mode group change.
To set the turbo timer: rapidly tap the switch 8 times, the light will then enter the programming mode and begin to flash. With the light in programming mode, tap the switch 30 times to enter the turbo timer set mode. The light will then switch to 100% power. When the light is at the desired temperature for the turbo step down, turn the light off. The turbo timer will then be set. The turbo timer steps the light down to 50% regardless of the mode group set.
To lock the mode groups: Solder Star 2 to ground. The other stars have no function with this firmware.
Electronic Switch Firmware Options
Standard Electronic Switch Firmware Low Voltage Protection. At around 3V under load, the light will step down the power level. At around 2.6V under load the light will shut off. You can override any low voltage shut down by holding down the electronic switch button. This system gives you ample warning and attempts to extend runtime before turning the light off.
Zener Mod Option
For use with more than 1 lithium cell on the input. This option allows for 2S-3S cell driving.
Zener Mod Low Voltage Protection. You can choose between three options for low voltage protection with the zener mod option:
Turbo Timer (N/A for guppydrv FW)
A turbo timer may help reduce the chance of overheating. Available Options:
FREQUENTLY ASKED QUESTIONS:
1. What Is The Input Voltage Range?
2. What Are the Downsides vs. The Normal QLITE Driver?
3. What Kind Of Output Can I Expect?
This driver was made possible and is heavily inspired by many members of the BLF flashlight community, especially comfychair (initial concept and development), Mattaus (PCB layout and development), JonnyC (firmware), DrJones (firmware), and wight (singe-sided PCB development and advice). If you'd like to learn more about these drivers, and participate in further development, come visit our community at budgetlightforum.com