The chip itself is very difficult to see. I will use a Chinese cheap microscope. Someday I will still get an optical, binocular microscope. But this is still only in dreams. With this microscope, you can even examine the chip itself. Most likely this is a silicon substrate. Semiconductors are assembled on it, but a different type of microscope is needed here.Millions of people use public transport in big cities. Every third person buys one-time tickets. After that, tons of this garbage goes to the landfill. Let's see how this ticket can still be useful.
By the way, bank, credit cards and others from radio tags can be connected in the same way as these tickets.

First you need to remove the contours from the paper cover. This is done very easily. You just need to pour hot water and leave for 10 minutes. The paper from the radio frequency antennas will begin to flake off by itself, you just need a little help.

The chip itself is very difficult to see. I will use a Chinese cheap microscope. Someday I will still get an optical, binocular microscope. But this is still only in dreams.

With this microscope, you can even examine the chip itself. Most likely this is a silicon substrate. Semiconductors are assembled on it, but a different type of microscope is needed here.

Well, how to fix contacts. I came up with the idea to use pressure contacts from hard drives. In general, I want to make something like a clip out of these contacts. Let's say, use the clamp method. Contact is excellent if done correctly.

Let's try them as a heating element. This is the main experiment I wanted to do. Voltage from 2.5 to 3V, current consumption 0.6Am., Module heating from 80 to 90 degrees. I think this is a small consumption. By connecting these unnecessary contours, you can easily make, for example, a warm floor. Only here it is worth wondering. If the connection is in series, then the voltage must be applied more. This poses a risk of electric shock. I think it's still worth connecting in parallel.

Now let's overclock, raise to 8 volts.

These cards work like a heating device. can you imagine how many ideas can be implemented? For example, a warm floor from 100 cards, heated mirrors for a car, making a warm rug for your beloved pet, heating clothes and shoes in winter.

I'll try to indulge in the charger. And let's try to start using an induction hob made of hard drives. Well, as you can see, this circuit works.

I'll try to charge something, it's a fly-polymer storage device and it is desirable to fill it with energy through a charge controller. Here I will not install a diode bridge either. Two Schottky diodes will suffice. The battery was charged after 40 minutes. For example, a flashlight, a power bank, a screwdriver can be transferred to contactless charging. So that the cords, power supplies do not roll around the corners ..

Finally, I will try to assemble an audio speaker from improvised means. My holder will be a box from video cassettes. The diffuser itself will be cut out of the polarizing filter from the LCD TV. The so-called upper suspension that allows the diffuser to move, I will try to create from simple rubber bands. It remains to glue the coil. The magnetic part of me will move to find the most interesting point for sound.

At 20Hz. I think the diffuser does a great job, like a real one.)) I wonder what it will show at higher frequencies?

I'll try to start the music!) I'll hook 3.5mm. plug. Oh, it's a pity that it's not stereo)) Wow, and the sound of course is shit!))) Do you think it yourself?

I always tell you, if you have any stupid, moronic ideas that no one will ever take and understand, write to me! Not saying goodbye. Be healthy. Save you God! See you soon.

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