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- Sun Jan 24, 2021 6:50 pm
- Forum: Hardware
- Topic: Connected to multiple relays but only work one at a time
- Replies: 4
- Views: 4184
Connected to multiple relays but only work one at a time
I'm connecting an ESP32 to 4 of these relays: https://www.amazon.com/Onyehn-Channel-Optocoupler-Isolated-Control/dp/B07PNB86R7/ref=cm_cr_arp_d_product_top?ie=UTF8 I'm connecting pins 18, 19, 22, and 23 to the logic inputs of the relays. I'm connecting the relay power to the 3.3V (I've also tried the...