Arduino SOS signal with 8ohms speaker and LED blinking

SOS is the commonly used description for the international Morse code distress signal (· · · — — — · · ·).  [read more on wiki] Requirements: 1) Arduino 2*) 8 Ω speaker 3*) 150 Ω or similar resistor 4) 5mm RED LED 5) Hook-up wires 6) Any breadboard * Ω = Ohms Step 1: Schematic Hook-up wires as shown (original pic here). Make sure that LED's anode and cathode correctly connected. [read more on wiki] Ste ...

Read more
Scroll to top