/diy/ - Do It Yourself

>>1737785
>timing might be hard to do without using an MCU.

people have used oscillators (like the 555) since before Christ.

>>853887
555 astable multivibrator circuit is the oldschool hello world of electronics. You should give it a try instead of going straight to microcontrollers and skipping the basics. It can blink an LED or produce a tone in a small microphone.

> in programming we have classic programs to learn/improve/display understanding of programming knowledge

You can take the same approach with electronics. Once you've got the simple 555 circuit working try adding things:
- make the frequency variable with a potentiometer
- Connect it to a power transistor to drive a larger light or speaker
- Connect it to a binary counter chip like the 4040; or other logic chips.
- Produce a nice sawtooth wave by adding a cap, resistor, and transistor
- use it to drive a small transformer and charge up a high voltage capacitor