Many Electronic circuit projects in simple ways of learning

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 unclear the 7 segment LED display 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.

Related Posts


JLCPCB - Only $2 for PCB Protytpe(Any Color)

With 600,000+ Customers Worldwide, 10,000+ PCB Orders Per Day

Up to $20 shipping discount on first order now: https://jlcpcb.com/quote

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Close Menu