[SOLVED] Is it safe to use a common ground when it makes the Uno turn on?

Dig Uno Wiring

Quinled-dig-quad wiring guide [solved] is it safe to use a common ground when it makes the uno turn on?

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QuinLED-Dig-Quad Wiring Guide - quinled.info

Quad quinled wiring

Quinled ws2815 leds led pinout

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QuinLED-Dig-Uno Pinout&Wiring guide - quinled.info
QuinLED-Dig-Uno Pinout&Wiring guide - quinled.info

Quinled-dig-quad wiring guide

Arduino uno schematic (colour) – embedded electronics blogQuinled-dig-quad wiring guide Pick to light project 1 serialUsing the quinled-dig-uno pcb with wled – inspect my gadgets.

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Understanding Arduino UNO Hardware Design - Technical Articles
Understanding Arduino UNO Hardware Design - Technical Articles

Quinled-dig-uno pinout&wiring guide

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QuinLED-Dig-Quad Wiring Guide - quinled.info
QuinLED-Dig-Quad Wiring Guide - quinled.info

Arduino clone woks only with USB - NOT with external power - Arduino
Arduino clone woks only with USB - NOT with external power - Arduino

Using the QuinLED-Dig-Uno PCB with WLED – Inspect My Gadgets
Using the QuinLED-Dig-Uno PCB with WLED – Inspect My Gadgets

Pick to Light Project 1 Serial - Hackster.io
Pick to Light Project 1 Serial - Hackster.io

[SOLVED] Is it safe to use a common ground when it makes the Uno turn on?
[SOLVED] Is it safe to use a common ground when it makes the Uno turn on?

QuinLED-Dig-Quad Wiring Guide - quinled.info
QuinLED-Dig-Quad Wiring Guide - quinled.info

QuinLED-Dig-Quad Wiring Guide - quinled.info
QuinLED-Dig-Quad Wiring Guide - quinled.info

Ungo 5200 Wiring Diagram - Wiring Diagram Pictures
Ungo 5200 Wiring Diagram - Wiring Diagram Pictures

QuinLED-Dig-Quad Wiring Guide - quinled.info
QuinLED-Dig-Quad Wiring Guide - quinled.info

Smart door bell and noise meter using FFT on ESP32 - IoT Assistant
Smart door bell and noise meter using FFT on ESP32 - IoT Assistant