23rd-Nov-23, 07:17 PM
The Arduino will perform perfectly well using the 5 volts provided via the USB cable. An external power supply would only be necessary if you are running lots of LEDS from the Arduino. I have two 5volt relays plus the five start lights running happily.
For the LEDs in the "Light Bridge" I power those from a separate USB socket.
Your Arduino is missing the usual power socket that is provided for using an external power supply.
For the LEDs in the "Light Bridge" I power those from a separate USB socket.
Your Arduino is missing the usual power socket that is provided for using an external power supply.
Forum Precepts: Don't hijack or divert topics - create a new one. Don't feed the Troll. http://www.scuderiaturini.com

![[+]](https://slotracer.online/community/images/bootbb/collapse_collapsed.png)