How to make a homemade digital microscope

The microscope is an instrument that, thanks to the effect generated by refraction lenses, allows us to obtain an enlarged image of the smallest objects. If you are a lover of original and technological projects, with this step by step you will be able to learn how to build a version of it using a smartphone and a laser pointer.

In addition to being an economical alternative, building it yourself is a fun task that you can share with your family and, believe it or not, it is much easier than you imagine! Dare to build it and experiment discovering the smallest details that your eyes cannot distinguish.


-3 4 ½” x 5/16” screws
-9 5/16″ nuts
-2 wing nuts 5/16″
-5 5/16″ washers
-1 wooden platform for the base of 2 cm x 18 cm x 18 cm
-1 acrylic phone platform 3mm x 18cm x 18cm
-1 acrylic platform for objects 3 mm x 7.6 cm x 18 cm
-1 laser pen lens
-Flashlight or LED (to see the samples against the light)




1. Disassemble the laser, separating the lens from the device. Start by removing the batteries, and then remove the remaining pieces with pliers.

2. Take the wooden plate and draw two lines 2 cm from the top edge and 2 cm from the side. At the bottom, mark a single point in the center of the platform, 2 cm away from the end.

3. Place one of the transparent acrylic plates on the wooden one, ensuring that the ends are aligned. This will be the cell phone camera mount.

3. Then, place the other platform on top of the previous ones, 2 cm in front of them. This will be the basis for the objects that are parsed.

4. Use the marks made on the wooden platform with the marker to pierce the tops of all three platforms together.

5. In the center of the upper part of the acrylic plate that will support the cell phone, make a small hole 2 cm from the upper edge to place the lens.

6. Place the lens in the hole made.

7. At the base of the way, make a larger hole to place the lantern (depending on the size of the one you use).

8. Place and tighten the screws in the holes made. Secure them with the nuts and washers.

9. Thread the wing nuts onto the top two bolts.

10. Place the platform that will hold the objects on top, leaving a certain distance from the base.

11. Put one more nut on each of the screws and, finally, place the acrylic base that will hold the cell phone.

12. Place the object to be analyzed on its base and align the cell phone camera with the light and the lenses until you get a perfect focus.

How does it work?

In this video you will see how your microscope will work. Dare to do it! The results are really impressive!