It costs about $1-$2 and you will have many fewer parts. It's a CMOS timer based on the 555 with a counter added to get low frequencies. If you don't want any software, then I really like the ICM7242 IC which is cheap and ancient. Something like a PIC uP is great for this. The way this is really done is with digital circuits. These circuits can be a pain in the you-know-what. I don't have much to add to the other comments, which I think are all good advice. so you can ignore my comments about other ways, below. I'll assume that you want to learn about linear transistor based oscillators, since that's the circuit you chose. I didn't really know what values the compoents should have as I have not seen any good examples online. I am not sure if my circuit has the same issue. I have looked at other posts and I saw that some other RC oscillators do not have enough voltage to sustain the oscillations. Please note: this is my very first time building any kind of oscillator. I have tried to put an LED at the output to see if it flashes, but it doesn't (and I have checked every time after turning on the circuit to make sure that the LED is not burned out)
I have tried to measure the AC voltage of the output and it gives me about 0.7 - 0.8 V (this is a contradictory result to the frequency measurement) I have tried to measure the frequency of the signal at the output, but it gave me 0 Hz I have quadruple checked that the connections are correct My BJT has a minimum gain of 35, so my transistor gain should be good. The drop for this circuit is 29, and you need at least a gain of 29 in order for the oscillator to work.
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