LED Cool
Enlightened
Introducing the new LiteFlux LF5XT!
the LF5XT is the first AA light to use an electronic tack switch with MCU controlled user interface.
here are some LF5XT 3D images.
a cutaway drawing.
various internal components making up the LF5XT.
real life photo shots of the actual tack switch, spring and LED driver/circuit with MCU.
this shot show one side of the circuit board.
this show show the other side of the same circuit board.
i have been told by LiteFlux that it was a great and difficult challenge to come up with a circuit to power up the MCU using an AA (1.0V - 1.5V) power source. i know nothing about LED circuit with MCU design, so i would appreciate if anyone can elaborate and enlighten us on LiteFlux claim.
the information that i am posting below are what i currently have from LiteFlux. these information may change without my knowledge.
Specifications
LED : CREE XR-E R2 bin
Approximate LED current at 100% output level :
500ma when using alkaline & NIMH,
800ma when using 14500.
Approximate LED current at 2% output level :
9ma when using alkaline & NIMH,
14ma when using Li-Ion 14500
Input voltage : 1.0V - 4.5V (AA/14500)
AA battery chemistry : Alkaline(1.5V), NIMH(1.2V), NICD(1.2V), Primary Lithium(1.7V) & rechargeable Li-Ion 14500(4.2V)
PWM Frequency 7800Hz.
Dimension = 101mm length. 20.5mm diameter.
Weight = 53 grams.
Material = 6061 T6 Aluminium Alloy.
Tail press button machined from 6061 T6 Aluminium Alloy and HA III finish.
AR Coated glass lens.
NATURAL and BLACK HA III finish.
O ring seal at lens, both end of battery tube and tack switch.
Tail cap provides 2 holes, 2 elongated holes and 2 slots. Stable tail stand.
All parts can be dismantle for cleaning and maintenance.
water resistant.
Lanyard, Spare O-rings, silicon lubricant, user manual and wooden gift box.
Operation Modes
the LF5XT has 5 operation modes. the factory default setting are.
Mode 1 = 50% brightness output
Mode 2 = 15% brightness output
Mode 3 = 2% brightness output
Mode 4 = 50% brightness double flash beacon
Mode 5 = 15% brightness SOS
1 click (1xC) turn on the light.
2 clicks (2xC) jump to next operation mode. Mode 1 - 2 - 3 - 4 - 5 - Mode 1.
1 click (1xC) turn off the light.
Types of Output
there are 4 types/styles of output in LF5XT.
Constant brightness
Strobe - 8 frequencies
Beacon - single flash & double flashes with 8 frequencies for both.
SOS
the brightness of all 4 types of output is user adjustable from (was 8%) 2% to 100%.
the output of all 5 operation modes can be change by user to the above mentioned 4 types/styles. for example, you can set all 5 operation modes to have
5 different % of constant brightness or
5 different frequency and brightness of strobes or
5 different frequency and brightness of beacon or
5 different brightness of SOS or
any combination of the 4 types/styles in ANY order you preferred.
Quick Access
in addition to the 5 operation modes, the LF5XT provides quick access to the following while in all 5 operation modes.
100% constant brightness - press and hold (PH)
Random strobe at 100% brightness - one click plus press and hold (1C+PH)
Release the hold on the tack switch and the LF5XT reverts back to the previous operation mode.
Special Functions
the LF5XT also has the following functions.
1. Momentary-on function.
factory default is OFF.
2. Rechargeable battery NIMH & Li-Ion over discharge protection.
factory default is OFF.
3. Operation Mode setting.
That is right! the LF5XT allows the user to select the desired number of
operation modes. your LF5XT can be a 1 mode light, or a 3 mode light or
a 5 mode light!
Minimum is 1 operation mode.
Maximum is 5 operation modes.
4. RESET
Restore the EEPROM to factory default settings.
Light default to Mode 1 = 50% brightness.
Operation mode default to 5 modes.
5. Last used mode memory on/off function.
Users can decide if they want this memory function to operate.
Factory default is ON.
Battery Voltage report = 5 clicks (5xC) in any operation modes.
Brightness % report = 5 clicks (5xC) only while in output setting menu.
both reports use the same format.
1 flash = 1
3 flashes = 3
.
.
9 flashes = 9
2 quick flashes = 0
for example,
0.9V is 2 quick flashes, blank one second, 9 flashes.
100% is 1 flash, blank one second, 2 quick flashes, blank one second, 2 quick flashes.
Logarithmic plus Linear Brightness Adjustment.
as many LiteFlux users have pointed out, the linear brightness adjustment of LF2X, LF2, LF3, LF4, LF5 caused some difficulty in setting the user desired brightness level.
well, the LF5XT now has both logarithmic and linear adjustment for the brightness setting. Logarithmic adjustment to quickly jump to the level you want, and linear adjustment for macro adjustment to the exact output level % desired.
the exact output level % can be determined using the brightness % report (5xC) while in the output setting menu.
each logarithmic increase steps raises the output by 50%.
eg. 10% -> 15% -> 22% -> 33% -> 50% -> 75%
each logarithmic decrease steps reduces the output by 33%.
eg. 75% -> 50% -> 33% -> 22% -> 15% -> 10%
that is all for now. i will add more info later.
please tell CPF members what do you think of the LF5XT.
thank you.
khoo
the LF5XT is the first AA light to use an electronic tack switch with MCU controlled user interface.
here are some LF5XT 3D images.
a cutaway drawing.
various internal components making up the LF5XT.
real life photo shots of the actual tack switch, spring and LED driver/circuit with MCU.
this shot show one side of the circuit board.
this show show the other side of the same circuit board.
i have been told by LiteFlux that it was a great and difficult challenge to come up with a circuit to power up the MCU using an AA (1.0V - 1.5V) power source. i know nothing about LED circuit with MCU design, so i would appreciate if anyone can elaborate and enlighten us on LiteFlux claim.
the information that i am posting below are what i currently have from LiteFlux. these information may change without my knowledge.
Specifications
LED : CREE XR-E R2 bin
Approximate LED current at 100% output level :
500ma when using alkaline & NIMH,
800ma when using 14500.
Approximate LED current at 2% output level :
9ma when using alkaline & NIMH,
14ma when using Li-Ion 14500
Input voltage : 1.0V - 4.5V (AA/14500)
AA battery chemistry : Alkaline(1.5V), NIMH(1.2V), NICD(1.2V), Primary Lithium(1.7V) & rechargeable Li-Ion 14500(4.2V)
PWM Frequency 7800Hz.
Dimension = 101mm length. 20.5mm diameter.
Weight = 53 grams.
Material = 6061 T6 Aluminium Alloy.
Tail press button machined from 6061 T6 Aluminium Alloy and HA III finish.
AR Coated glass lens.
NATURAL and BLACK HA III finish.
O ring seal at lens, both end of battery tube and tack switch.
Tail cap provides 2 holes, 2 elongated holes and 2 slots. Stable tail stand.
All parts can be dismantle for cleaning and maintenance.
water resistant.
Lanyard, Spare O-rings, silicon lubricant, user manual and wooden gift box.
Operation Modes
the LF5XT has 5 operation modes. the factory default setting are.
Mode 1 = 50% brightness output
Mode 2 = 15% brightness output
Mode 3 = 2% brightness output
Mode 4 = 50% brightness double flash beacon
Mode 5 = 15% brightness SOS
1 click (1xC) turn on the light.
2 clicks (2xC) jump to next operation mode. Mode 1 - 2 - 3 - 4 - 5 - Mode 1.
1 click (1xC) turn off the light.
Types of Output
there are 4 types/styles of output in LF5XT.
Constant brightness
Strobe - 8 frequencies
Beacon - single flash & double flashes with 8 frequencies for both.
SOS
the brightness of all 4 types of output is user adjustable from (was 8%) 2% to 100%.
the output of all 5 operation modes can be change by user to the above mentioned 4 types/styles. for example, you can set all 5 operation modes to have
5 different % of constant brightness or
5 different frequency and brightness of strobes or
5 different frequency and brightness of beacon or
5 different brightness of SOS or
any combination of the 4 types/styles in ANY order you preferred.
Quick Access
in addition to the 5 operation modes, the LF5XT provides quick access to the following while in all 5 operation modes.
100% constant brightness - press and hold (PH)
Random strobe at 100% brightness - one click plus press and hold (1C+PH)
Release the hold on the tack switch and the LF5XT reverts back to the previous operation mode.
Special Functions
the LF5XT also has the following functions.
1. Momentary-on function.
factory default is OFF.
2. Rechargeable battery NIMH & Li-Ion over discharge protection.
factory default is OFF.
3. Operation Mode setting.
That is right! the LF5XT allows the user to select the desired number of
operation modes. your LF5XT can be a 1 mode light, or a 3 mode light or
a 5 mode light!
Minimum is 1 operation mode.
Maximum is 5 operation modes.
4. RESET
Restore the EEPROM to factory default settings.
Light default to Mode 1 = 50% brightness.
Operation mode default to 5 modes.
5. Last used mode memory on/off function.
Users can decide if they want this memory function to operate.
Factory default is ON.
Battery Voltage report = 5 clicks (5xC) in any operation modes.
Brightness % report = 5 clicks (5xC) only while in output setting menu.
both reports use the same format.
1 flash = 1
3 flashes = 3
.
.
9 flashes = 9
2 quick flashes = 0
for example,
0.9V is 2 quick flashes, blank one second, 9 flashes.
100% is 1 flash, blank one second, 2 quick flashes, blank one second, 2 quick flashes.
Logarithmic plus Linear Brightness Adjustment.
as many LiteFlux users have pointed out, the linear brightness adjustment of LF2X, LF2, LF3, LF4, LF5 caused some difficulty in setting the user desired brightness level.
well, the LF5XT now has both logarithmic and linear adjustment for the brightness setting. Logarithmic adjustment to quickly jump to the level you want, and linear adjustment for macro adjustment to the exact output level % desired.
the exact output level % can be determined using the brightness % report (5xC) while in the output setting menu.
each logarithmic increase steps raises the output by 50%.
eg. 10% -> 15% -> 22% -> 33% -> 50% -> 75%
each logarithmic decrease steps reduces the output by 33%.
eg. 75% -> 50% -> 33% -> 22% -> 15% -> 10%
that is all for now. i will add more info later.
please tell CPF members what do you think of the LF5XT.
thank you.
khoo
Last edited: