423455th incarnation of shitcore.org
🖫 THESE ARE MY TOYS NOISEBOB Tue 2020-04-14 12:40pm
I HATE MUSIC SO MUCH
||🖫 555guy Tue 2020-04-14 8:13pm
This simple metronome circuit demonstrates just one simple way of using a 555 oscillator to produce an audible sound or note. It uses a 150kΩ potentiometer to control the full range of output pulses or beats, and as it has a 150kΩ value it can be easily calibrated to give an equivalent percentage value corresponding to the position of the potentiometer. For example, 60 beats per minute equals 142.3kΩ or 95% rotation.
Likewise, 120 beats per minute equals 70.1kΩ or 47% rotation, etc. Additional resistors or trimmer’s can be connected in series with the potentiometer to pre-set the outputs upper and lower limits to predefined values, but these additional components will need to be taken into account when calculating the output frequency or time period.
While the above circuit is a very simple and amusing example of sound generation, it is possible to use the 555 Oscillator as a noise generator/synthesizer or to make musical sounds, tones and alarms by constructing a variable-frequency, variable-mark/space ratio waveform generator.
||🖫 anonymous Tue 2020-04-14 9:22pm
||🖫 NOISEBOB Thu 2020-04-16 8:49am
this is NOISEBOB ELECTRONICS hexatrigger.
||🖫 NOISEBOB Thu 2020-04-16 9:37am
Inside view... yeah, I just hotglued it.
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