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Questions tagged [code-review]

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Z80 computer design peer-review [closed]

this is a re-post as I was unable to get any help on other forums. I have designed and built a simple Z80 computer system with 32K RAM, Z80B at 4mhz, 32K ROM, and a UART. The only problem with it is ...
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Arduino nano, unexpected sound from buzzer when receive data from radio module HC-12

I make a simple circuit with an: Arduino Nano HC-12 Long distance radio module HC-12 Antenna 1000 uF Capacitor Buzzer 220 Ohm Resistor I need that the buzzer emits a noise when Arduino receives ...