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How many relays can I connect to one Arduino?

AnotherMaker 57,209 4 years ago
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Literally threes of people have asked me this question, so I decided to find out. I love these 8 channel relay boards, but how many can you attach to one Arduino and what's the best way to connect them? Oh. I know I repeated the DuPont part. I couldn't bring myself to re-edit :) Let's just say I wanted to drive that point home. Links below are affiliate links and may earn a commission for the channel. USA 8 Channel Relay - https://amzn.to/2J4EElK 16 Channel Relay - https://amzn.to/3mvUGmc DuPont Crimpers - https://amzn.to/3h7tg51 DuPont Connectors - https://amzn.to/34vhAnz Will It Blow Up - Episode 001 - Maybe this should be a thing?

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