LED Copy Pad

This portable led copy pad is ideal for all of your creative projects, as it can be used for stenciling, scrapbooking, or simply drawing. The led pad is powered by USB. This A4 led pads are great for stenciling, 2D animation, calligraphy, embossing, scrapbooking, sketching, drawing, streaming, sewing projects, stained glass, quilting, and a variety of other crafts.

We need following items to make this LED copy pad.

1) Acrylic Sheet 3mm (30cm x 26cm) Buy Here

2) White LED Light 5mm (15 pieces) Buy Here

3) TP4056 Charging Module (Buy here Type C INPUT). (Buy here Micro USB Input)

4) Soldering Iron Buy Here

5) Sand Paper

6) OTG Pin Buy Here

First of Take 15 pieces of white LED lights with a 5 mm diameter and test them with a 5 volt battery. A Super Bright 5mm LED is extremely bright and has a wide beam angle, making it ideal for use in projects. The 5mm LED can be used anywhere low-power, high-intensity reliable light or indication is required.

Then, as shown in the picture, connect all 15 led lights in parallel. To connect LED lights, use a soldering iron and soldering wire. Then connect one end of the circuit using the red and black wires to the negative and positive terminals, respectively. Then take a 3 mm heat shrink tube and seal it.

Here 15 LED need 3.8 volt dc power supply with 1 A output. In parallel circuit connection voltage will same for all LEDs but Ampere divided by No. of LEDs.

So needed Voltage = 3.8 Volt

Ampere = 70mA x 15 = 1050 mA = 1 A approx.

To obtain 3.7–4.2 output voltage, use the TP4056 1A Li-ion lithium battery charging module. We get 5 volts from our smartphones and convert them to 3.7 volts for the best performance of this 5 mm LED light. Connect a parallel-connected LED strip to this TP4056 charging module using a soldering iron.

Then connect the USB pin to the charging module input and the other end to the smartphone via the OTG pin. All 15 LEDs are now properly lit.

Take a 3mm clear acrylic sheet 30 cm x 26 cm. If you have something bigger than this, then you need to cut in this dimension using laser cutting. If you do not have a laser cutting machine, you can cut using a circular saw or a hand saw. Remove the cover from clear acrylic sheet.

The light from leds is not absorbed by this clear acrylic sheet. We need to make an acrylic sheet to absorb this LED light. For this, we need to rub this acrylic sheet using sand paper. Continuously go over the entire surface of the acrylic sheet with this sandpaper. You can see a mat-finished acrylic sheet in the last picture.

Then, using gum, adhere a 30 cm x 26 cm white sunboard sheet to the back of the acrylic sheet. You can use any thick white board or paper sheet if you do not have a sunboard sheet.

We need to make one box at one end of the acrylic sheet to place the led strip. I use instant glue to adhere two pieces of black 26 cm x 4 cm acrylic together for this. 

First, place the charging module on the right side of the casing. Place The led strip should be oriented so that it faces the front of the acrylic sheet. Then close this case using a black acrylic sheet.

Now the LED Copy Pad is ready to copy any drawing. To copy a drawing, place a sheet of A4-size readymade drawing paper on this led copy pad and another sheet of blank A4-size paper on it. Connect this led copy pad to your smartphone, and you can see a drawing reflected on blank paper. Now you can easily follow the line of a drawing using a pencil. The drawing is ready now.