Omega, try this… click it on then bump like you’re changing modes 10 - 12 times, it SHOULD give you a quick blink, tap it like a mode shift at this point, it should then blink once, pause, twice, pause, three times and so forth… try clicking on one of those like say the place where it blinks 3 times bump it or turn it off, see if it takes that setting.
Biscotti, which is what your C8 driver should have, has this interface….
The interface is as follows:
While off:
- Fully click and release to turn the light on. It will go to the first mode or the last-used mode, depending on whether you enabled mode memory.
While on:
- Short tap: Do a short (less than 0.5s) half-press to go forward to the next mode.
- Long tap: Do a long (longer than 0.5s) half-press to reset to the first mode (if mode memory is turned off).
- Fully click and release to turn the light off.
- Short tap a bunch of times (10+ taps, or until the light stops turning on) to enter config mode.
Blinky modes:
- Some mode groups have blinky modes. They are not hidden, but if you leave mode memory off you can skip them with a long press.
Blinky modes include:
- Tactical strobe (~10 Hz)
- Biking flasher (2-level stutter beacon, 1 Hz)
- Battery check / beacon mode Each blink represents about 25% battery charge, so 1 is a low battery and 4 blinks is full. 5 blinks means it’s over-charged.
Configuration options:
The config mode has several options. It will blink out a number to show which option is active, then “buzz” or “stutter” for a bit.
Click during the “buzz” to select that option. Some options may enter a secondary config mode after the light turns back on.
Options include:
1. Mode group.
After clicking, the light should come on in a special group-select mode. In this mode, it slowly blinks out numbers from 1 to N, where N is the number of mode groups, then repeats. Turn the light off after N blinks to select mode group N.
Do not leave the light in config mode for long periods of time, because it will wear out the driver’s memory faster.
The mode groups are: (output is approximate)
1. 0.1, 1, 10, 35, 100%, strobe, biking, battery-check
2. 0.1, 1, 10, 35, 100%
3. 100, 35, 10, 1, 0.1%
4. 1, 20, 100%, strobe, biking, battery-check, SOS
5. 1, 20, 100%
6. 100, 20, 1%
7. 0.1, 1, 10, 50, strobe, biking, battery-check, SOS
8. 0.1, 1, 10, 50
9. 50, 10, 1, 0.1
10. 1, 10, 35, 100
11. 100, 20, strobe
12. 100% only
Example: To select group 5 (low-med-high), let it blink until it counts out five, then click the button.
2. Mode memory. Off or on.