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Description
- 555 Timer with adjustable duty cycle
- Frequency - about 4.5kHz
- Produces square wave
Schematic
Gallery
Top View
Bottom View (don't buy cheap soldering iron)
50% duty cycle
30% duty cycle
Notes
- Using fast switching schottky diode speeds frequency
- Using lower value resistors and capacitors speeds frequency.
- Getting a higher quality soldering iron can save you a lot of time