Here you will learn to make a simple circuit to build a hat headlamp without any computing boards, but it is optional to use a ATTiny board or another arduino based boards too.
- White or Black Cap.
- White Neo Pixel LEDs
- 1 or 2 - 3v Battery
- Conductive Thread
- Copper Fabric
- Conductive Tape
- Cotton Fabric
- Black or White Cotton Thread
- One needle
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Step 1: Step 1: Sketching and Planning
I started this project with two options, one was a pair of mittens with fade in/fade out led lights for bike riders while the other option was to build a hat with a lamp hovering over it to read at night within a personal space. Then, I decided I could make a better circuit with the hat to make a touch sensitive sensor to turn the lights on and off as well as intensifying or dimming the lights with the ATTiny.
Step 2: Step 2: Change of Plans - Basic Circuit
I could not program my ATTiny so had to make some changes to be able to create a touch switch on and off. To build my switch I cut two squares of conductive fabric and sewed to a piece of fabric which I would sew onto the inside of hat. I used conductive fabric to sew my two pieces.
Step 3: Step 3: Battery and Sewing
Then, I build a little pocket to hold my 3v battery in which I also put two pieces of copper tape on each side. Right after, I knotted two strings of conductive fabric inside on both the power and ground sides to lead my circuit. I sewed in the battery pocket with black thread to blend in with the hat.
I sewed in the positive side of the battery around the hat through the back and the negative side on the front side.
Step 4: Step 4: Adding LEDs
Then, placed 4 LED's instead of the neopixels because I purchased nano neopixels which were too small to solder on the hat. I soldered the conductive thread (which was really difficult to not burn, so kept the heat to the minimum) on each ground and positive ends.