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ESP32-S3-WROOM-1 and ESP32-S3-WROOM-2 comes with a PCB antenna
4 DC Songle relays 220V
Interface: SPI (Serial Peripheral Interface)
this is A4)
Flexible Coupler (3mm to 6.50 mm) sn74hc138 ESP32-S3-WROOM-1 and ESP32-S3-WROOM-2 comes withConnect motor shaft to anything else with a set screw coupler. These couplers are made of machined aluminum and have a spiral cut that makes them slightly flexible so they can be fit to two shafts even if they are not perfectly co linear and will help reduce bending effects. The way they are cut, create a spring effect in the X Y & Z linear axis but not in the rotational axis. That means that you will not get increased backlash so they're suitable for
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