I tried to light up an LED and operate an astable multivibrator by using NFC power supply.

I also introduced how to wind a planar coil,

how to use Arduino, and how to add an RFID module and library using the MFRC522 chip.

Please see the video below for the circuit diagram of the astable multivibrator.

I changed the SMD capacitor to 4.7μF, so the blinking became faster.

I covered the Arduino in the video with a UV color board I made myself.

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Related videos

[Pico's Electronics] How to use KiCad Make a higher level board with UV color printing! UV printing original color board homemade illustration

   • 【ピコの電子工作】KiCadの使い方 UVカラー印刷で一歩上の基板作り！ UV印刷 ...  

[Pico's Electronics] How to use KiCad Specifying a V cut SMD Surface mounting frequently causes problems! Astable multivibrator

   • 【ピコの電子工作】KiCadの使い方 Vカットの指定 SMD 表面実装でトラブル頻発...  

[Pico's Electronics] LEDs from far away can shine like this! The amazing power of 1.5V batteries! Long-distance wireless power supply Magnetic field harmonic coupling Resonant frequency    • 【ピコの電子工作】遠くのLEDもこんなに光る！　1.5V電池の脅威の実力！　遠距離ワ...  

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Please also check out the ongoing series "Stories about Leftover CRTs" on Twitter! twitter.com/KazuhikoTsuduki

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Music used: BT GIRLS MusuMus (musmus.main.jp/bgm_04.html) Shall we meet? MATSU (dova-s.jp/bgm/play2896.html)
Cat Life BGM: GT-K (DOVA-SYNDROME) GT-K (dova-s.jp/bgm/play2558.html)
Sparkling sea BGM: GT-K (DOVA-SYNDROME) GT-K (dova-s.jp/bgm/play2471.html)
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Sound effects used
Sound Effect Lab (soundeffect-lab.info/)
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Synthetic voice used
Pico-chan COEIROINK Tsukuyomi-chan (tyc.rei-yumesaki.net/)
Owner COEIROINK OfutonP (mohumohuton.web.fc2.com/)
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Video software used
Yukkuri MovieMaker Lite (manjubox.net/ymm4/)