A flashlight that flashes/pulses at ~60 Hz, duty cycle 50%, too fast for the human eye to see it. You can see it flashing with a camera.
8 pin socket for the IC
5x LED (I used high power)
2x 150 ohm resistors
12K resistor (R1)
120K resistor (R2)
2x 0.1 uF caps
2N2222 / BC547 NPN transistor (or something that can handle better the current - my 2N2222 it gets hot so i used a heatsink )
9V battery clip
470 uF cap (any kind will do or just skip it)
Zip tie To hold the battery
Toner Transfer Method
If you do not use the switch just solder a wire instead of it.
Hope you enjoyed it. The flashlight is more economical because it is not continuously on.
Sorry for grammar or other mistakes.
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