Netux · 54w nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqsrame5ar867ukrr4t4ehnf7ahz9nyffn39cq3gzfyc9clg5n7jesnzkm86 why are there two diodes in series right before ground? Chip @Chip 1757292542 @nprofile1q... Those are the IR LEDs that shine on the phototransistors. The squiggles next to them are supposed to be the outgoing arrows indicating they emit light. 1