How to fix unclear the 7 segment led display

I’ve bought a cheap digital frequency counter kits. It works great, can measure frequency up to 1GHZ in 19$ only. It use 8 the LED 7 segment display. But it’s a little brighter so cannot clearly read the value.

low brightness LEDs
Figure 1 low brightness LEDs

My son fix easily this problems by Installation film Cars. Makes Digits display very clear.
How to fix unclear the 7 segment led display
Figure 2 Digits clear when use film

How to make easy
This films, He request the car store near the house. Select the intensity level of about 60%.
First of all,

Measure the width the LEDs
Figure 3 Measure the width the LEDs

Cutting the film to size LED display
Figure 4 Cutting the film to size LED display

Then, Apply the films on the LED display

Trim the film to good look
Figure 5 Trim the film to good look

This is very very tip that my son use it. We not need modify in circuit we can do it, good Luck.

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