Questions tagged [safety]

Use this tag for questions about how to use the device safely, and how to keep the device safe from other dangers.

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5
votes
2answers
26k views

Using single 5V relay (jqc-3ff-s-z) - safety advice required

Above is relay I'm using and everything works as expected using diagram below. I will add 1n4148 diode on IN line for safety and will connect VCC to power supply before Pi. Can I use ground (GND) ...
19
votes
3answers
1k views

Is Raspberry Pi resistant to nuclear radiation?

I've had this wacky idea to turn my Raspberry Pi into an autonomous Geiger counter that would log the decay rate at various high-radiation sites such as Chernobyl Exclusion Zone or the surroundings of ...
7
votes
1answer
6k views

Whitelist internet filter

I want to set my small kids loose on the Raspberry Pi with Scratch 2.0 and code.org without having to worry about them accidentally ending up in the undesirable parts of the web. I have set up ...
3
votes
2answers
6k views

Should I leave the Raspberry Pi plugged in after shutdown?

Are there any problems with leaving my Raspberry Pi powered even though it is shutdown? Sometimes I forget to unplug it after running sudo halt, so I was wondering if I was affecting the lifespan ...
11
votes
1answer
14k views

Does short-circuiting GPIO pins damage the Raspberry?

Does accidently connecting the wrong GPIO pins damage the Raspberry Pi or is there some protection like a fuse?
11
votes
3answers
4k views

Precautions to be taken while using the GPIO pins

As a newbie to the Raspberry Pi and electronics in general, I would like to start hacking around with the GPIO pins but any tutorial around the Internet warn me about frying the Pi one way or the ...
1
vote
1answer
93 views

Is a RC snubber required when using the pi with a relay?

I am hoping to use raspberry pi to switch on and off a heating lamp and an aquarium pump via a relay switch. Both devices are plugged into 120V AC normally. The relay tutorials online seem to be ...