[Successful test] Touch dimming circuit

Things start from January 23, 2021... I am using an old antique fluorescent desk lamp to write my winter vacation homework
(Exquisite workmanship)
As a result, the light flashed, and
the fluorescent lamp head burned out,
and it died.

But these days, where can I buy the same fluorescent lamp head?
So, I plan to change it.
I gave priority to 5V warm white LED strips as the light source (because I have a lot of them at home).
Of course, a PWM generator is essential.
First of all I thought of using a PWM dimmer as a PWM generator, but using a potentiometer for dimming felt too low
. Once, I accidentally saw the USB-powered touch dimmer lamp from Irongu , which was exactly what I wanted. Considering the external USB plug, Not so good, I decided to add an AC220V to DC5V module to the original project to act as a power supply. So, the plan was finalized.

The real scene at night is as shown in the picture (the digital tube shows the time, not the year...)