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This is a list of things I want to include in an LED flashlight I wish to build or buy if one that matches exsists.
Tell me if I'm missing anything that might be useful. I'm an Ultra-Light Backpacker so weight, size, and resourcefulness are factors.
LED Flashlight
Ultra-Lightweight.
Light enough that it can be attached to a headband or cap and used as a headlamp. Maybe using Velcro(tm).
The rechargable AAA battery never needs to be replaced because it is recharged by a solar cell.
The flashlight can be sealed to make it waterproof since it never needs to be opened to replace the battery.
If the battery is low and power is needed immediately, the seal can be broken and the battery can be replaced with either 1 AAA or 1 AA.
HOUSING
Not Round: To prevent it from rolling around.
Textured: For good grip.
LED is protected
Lanyard Attachment
Twist Off Cap- No tools needed to replace the battery in an emergency
Bombproof: Durable plastic
Waterproof (sealed): Seal can be broken to replace the battery in an emergency
Brightly Colored: To find it easily
Glow-in-the-Dark: To find it easily in the dark
Solar Cell: Recharges the AAA battery. No need to change the battery unless there is an emergency
BATTERY
1 AAA Rechargable Battery: With a power testing strip that can be seen through the housing
Can accept 1 AA or 1 AAA Battery: AAs and AAAs are the most widely availble batteries
BUTTON
Waterproof (sealed)
One Hand Activation
Textured: For easy activation in the dark
MINI-BOARD and CHIP
DC to DC, step-up converter: Miniaturized Inverter and Coil boosts the 1.5 volts from the AAA battery to 3-4 volts needed to power the LED
Constant ON with Auto Shut-off feature: Auto Shut-off will de-activate the flashlight after 3 minutes.
Auto Shut-off Override: Hold the button down for 3 seconds to de-active the Auto Shut-Off Feature
Pulses 40 times per second to save power: The human brain cannot tell the difference between 40 pulses per second and continous light
Will not activate while the button is held down. Will only activate after the button has been released.
Optional Mini-Board and Chip Features
Constant ON High Mode with Auto Shut-off feature: Overrides the 40 pulses per second feature and overdrives the LED. Auto Shut-off will de-activate the flashlight after 3 minutes.
Constant ON Emergency Strobe Mode: 1 pulse per second for 3 seconds and repeats it every 2 seconds. No Auto Shut-off.
Press the button repeatedly to cycle through modes
Tell me if I'm missing anything that might be useful. I'm an Ultra-Light Backpacker so weight, size, and resourcefulness are factors.
LED Flashlight
Ultra-Lightweight.
Light enough that it can be attached to a headband or cap and used as a headlamp. Maybe using Velcro(tm).
The rechargable AAA battery never needs to be replaced because it is recharged by a solar cell.
The flashlight can be sealed to make it waterproof since it never needs to be opened to replace the battery.
If the battery is low and power is needed immediately, the seal can be broken and the battery can be replaced with either 1 AAA or 1 AA.
HOUSING
Not Round: To prevent it from rolling around.
Textured: For good grip.
LED is protected
Lanyard Attachment
Twist Off Cap- No tools needed to replace the battery in an emergency
Bombproof: Durable plastic
Waterproof (sealed): Seal can be broken to replace the battery in an emergency
Brightly Colored: To find it easily
Glow-in-the-Dark: To find it easily in the dark
Solar Cell: Recharges the AAA battery. No need to change the battery unless there is an emergency
BATTERY
1 AAA Rechargable Battery: With a power testing strip that can be seen through the housing
Can accept 1 AA or 1 AAA Battery: AAs and AAAs are the most widely availble batteries
BUTTON
Waterproof (sealed)
One Hand Activation
Textured: For easy activation in the dark
MINI-BOARD and CHIP
DC to DC, step-up converter: Miniaturized Inverter and Coil boosts the 1.5 volts from the AAA battery to 3-4 volts needed to power the LED
Constant ON with Auto Shut-off feature: Auto Shut-off will de-activate the flashlight after 3 minutes.
Auto Shut-off Override: Hold the button down for 3 seconds to de-active the Auto Shut-Off Feature
Pulses 40 times per second to save power: The human brain cannot tell the difference between 40 pulses per second and continous light
Will not activate while the button is held down. Will only activate after the button has been released.
Optional Mini-Board and Chip Features
Constant ON High Mode with Auto Shut-off feature: Overrides the 40 pulses per second feature and overdrives the LED. Auto Shut-off will de-activate the flashlight after 3 minutes.
Constant ON Emergency Strobe Mode: 1 pulse per second for 3 seconds and repeats it every 2 seconds. No Auto Shut-off.
Press the button repeatedly to cycle through modes