Hello guys, how are you? I have recently started learning about electronics from the "Make: Electronics" book by Charles Platt and using the text books published on this very website. Following circuit is for the oscillator that can be used to produce a beeping sound, or in my particular case, flash an LED in a 1s interval.
It works perfectly on the breadboard but for some reason it failed when I attempted to make it on a single hole PCB board - the LED becomes lit but doesn't flash. Following images are from the said PCB board, and while I don't expect a direct answer (it doesn't work because of this and that) I would very much appreciate a hint - as vague as it is possible.
The last 220μF capacitor was added (but wasn't wired) to dim the LED gradually - hence the 2x 470Ω resistors instead one 1k.
Any suggestion and constructive criticism is also welcomed, thanks in advance!
It works perfectly on the breadboard but for some reason it failed when I attempted to make it on a single hole PCB board - the LED becomes lit but doesn't flash. Following images are from the said PCB board, and while I don't expect a direct answer (it doesn't work because of this and that) I would very much appreciate a hint - as vague as it is possible.
The last 220μF capacitor was added (but wasn't wired) to dim the LED gradually - hence the 2x 470Ω resistors instead one 1k.
Any suggestion and constructive criticism is also welcomed, thanks in advance!