Would you think you’re smart enough to compare with the Einstein? If you are, then you should try to DIY this RV LED light controller.

Material needed:

1. A PIC 16F627
2. A standard 1141 bayonet bulbs
3. Twenty-one LED

We’re using the standard 1141 bayonet bulbs that cost less than 1/10^th power and it can also used as an emergency lamp, by placing a gell cell battery on it.

Some of the great features are:

• Three light output.
• Delayed off mode (Give you times to get into bed, before the lights go out).
• Half an hour auto off mode.
• Low battery voltage alarm (about 11.4 volts).
• No drilling or wiring needed to install it.
• It will maintain regulated light levels to 11 volts, by using the 21 ultra bright LEDs.

If you referred to the above figure, you will see the configuration as:

• Jumper from pin 5-6 show the auto off feature (You can remove this jumper if you do not want the light to turn off automatically).
• Remove the jumper auto off will occur after about 1/2 hour.

Jumper from pin 9-10 indicate the low battery warning (Remove the jumper if you dont want the low battery indication).