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Connecting a 12v 8 Channel Relay to an External Power Supply and RaspberryPi | by Stuart Brown | Medium
![pi 3b+ - Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img - Raspberry Pi Stack Exchange pi 3b+ - Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img - Raspberry Pi Stack Exchange](https://i.stack.imgur.com/cuukk.jpg)
pi 3b+ - Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img - Raspberry Pi Stack Exchange
![ACT LED stops blinking, Raspberry Pi booting and reading from card as always - Raspberry Pi Stack Exchange ACT LED stops blinking, Raspberry Pi booting and reading from card as always - Raspberry Pi Stack Exchange](https://i.stack.imgur.com/102HN.jpg)
ACT LED stops blinking, Raspberry Pi booting and reading from card as always - Raspberry Pi Stack Exchange
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