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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.

1
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1answer
29 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 ...
0
votes
2answers
692 views

Is it safe to use an unpowered HDMI to VGA converter on Raspberry Pi 3?

I know there are a lot of questions similar to mine and this question may be regarded duplicate, but I believe my question is different. As you may know most of questions are concerned about using an ...
0
votes
1answer
30 views

Permanent & Safe Powering of Raspberry Pi in Confined Space

I have a small project that involves the automation of the lights in a room using a Raspberry Pi and a set of four relays. All of the software and hardware is operational, and it is ready to be ...
16
votes
7answers
24k views

If I plug my headphones into the audio jack, how do I control the volume?

This will be useful to know before I start just in case the volume is turned to the maximum by default. Also, more importantly, will the maximum volume be high enough to cause immediate hearing ...
3
votes
2answers
19k 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) ...
0
votes
1answer
42 views

Can it damage my Pi to permanently pull down the RUN pin?

I have a use-case where I would leave my Raspberry Pi powered up but keep it in the halted state by pulling down the RUN pinout. Is this safe to do? Edit: The answer shows me that I did not state my ...
0
votes
1answer
55 views

Is it safe to wear a Raspberry Pi with a battery module? [closed]

I want to take a Raspberry Pi with me as wearable device so I have to attach a battery on it. The problem is that I fear the battery would explode some day thus destroy my body , just like Galaxy ...
1
vote
0answers
25 views

Unmount microsd card after starting video

I want to make a Pi Zero that runs a looping video with no user input whatsoever and is safe to just unplug. I'd be running Raspbian Lite with no GUI or other programs in the background, just the ...
24
votes
8answers
8k views

Is it possible to receive an electric shock by touching a Raspberry Pi while it's on?

This is a question of safety for children using the device while they are still being shipped without a case. The USB power source is expected to provide 5V and at least 700mA. Is this enough to give ...
3
votes
1answer
174 views

Can someone explain what backfeeding is and how I can protect my Pi from it?

So I read something about "backfeeding" and that it can damage my Pi. What exactly is it? I didn't understand the article. BTW, I'm a complete noob so please try to be as un-technical as possible. I'...
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 ...
0
votes
1answer
450 views

Do I need to add a resistor before a relay?

I want my Raspberry Pi B+ to periodically check if my Raspberry Pi 3 is still running (not frozen). If it is frozen, I wan't my B+ to hard reset my Pi3 by pulling the power, then giving it power again ...
22
votes
3answers
4k views

Is my Raspi okay sitting on a magnet?

I have a big magnetic sheet that my Raspberry Pi is sitting on. It seems fine, but are there any dangers?
0
votes
2answers
821 views

Can I power a DC motor with the Pi's 5 volt pin?

The Pi has a 5 volt output. This DC motor draws about 600 mA when it is stalled. Is it safe to power the DC motor using the Pi's 5 volt output pin? If not, can I power it with a microusb charger?
1
vote
3answers
237 views

Generating alternating current from GPIO – is it a misuse?

I've built a simple joystick for my RasPi 3 Model B. When making it, I tried to minimize the number of its GPIO pins, and ended up with a design that uses 3 pins. However, I'm afraid I'm about to put ...
6
votes
1answer
5k 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 ...
15
votes
2answers
2k views

How important is a case for the Pi? (And how to safely create my own?)

How vulnerable is the Raspberry Pi without a case? I've seen the many Lego cases which look great, but I'm constantly wondering what the risk of such a case is. Will a Lego case successfully protect ...
20
votes
2answers
936 views

Can I break my Pi in a way that can't be fixed with a new SD card?

Aside from physical damage (treading on it), is there anything that I could do to the Pi that could irreversibly damage it? More specifically, will anything I can do with code, or by prematurely ...
1
vote
2answers
168 views

Long distance use of an RPi 3 B

I have recently acquired an RPi 3 model B. Because I do a lot of traveling I have several questions about the safety and ability of leaving a RPi active while being far away. I am not mainly concerned ...
6
votes
4answers
9k views

Can I make my Pi shutdown safely in the event of a power outage?

Obviously I'd need a UPS or battery of some kind to continue supplying power during an outage to my home. However, I'd like to have the Pi automatically shut down safely if it is switched to backup ...
4
votes
1answer
892 views

Piezo wiring for Raspberry Pi

I have a piezo element that I got from a song card, it looks like the one at: https://www.sparkfun.com/products/10293, and I was wondering whether it was safe to connect to my raspberry pi without a ...
1
vote
3answers
4k views

Power external hard drive though USB — safe to use USB charger?

I would like to connect an external hard drive to the Raspberry Pi. This hard drive must be powered through USB and comes with a cable that has two ends (to ensure sufficient power). The cable is ...
1
vote
3answers
2k views

Raspberry Pi USB power from 5V S-ATA from inside 3.5" HDD Enclosure

I have a 3.5" HDD enclosure with external power supply. Inside I have a 2.5" HDD and there is space in there for the RPi. The problem is I don't want to have two power supplies so I was thinking to ...
2
votes
2answers
148 views

Is it safe to drive a current between a GPIO output at 0V (LOW) and the 3.3V supply?

Normally I would drive a current between a GPIO output at 3.3V (HIGH) and GND, for example to light a LED (with a resistor included of course). I am now wondering if it is safe to drive the current in ...
2
votes
3answers
1k views

Real Time Clock Module Will it fry my pi?

I bought this RTC module on ebay for pennies. I initially bought it for the arduino but now I would like to use it with the pi. However, I know that in some cases you need logic level converters to ...
3
votes
2answers
567 views

Safe operating parameters for GPIO pins

Recently I have started using the GPIO pins more frequently and am a little bit wary of frying them. I read an article here about 10 ways to fry an Arduino. Since the pi has 3.3v logic and I believe ...
3
votes
2answers
674 views

Can I safely hook up my Raspbian device to the Internet?

I recently bought a Raspberry Pi, and I would like to attach it to my local network and (via port forwarding) let it be reachable from 'the outside world'. My plan is to run Apache with PHP on it, ...
10
votes
1answer
13k 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?
2
votes
1answer
199 views

Is it safe to leave stuff connected to the GPIO pins when the Pi is powered off?

I am asking about stuff that would be within the normal operating limits when the Pi is on, i.e. 3v3 level voltages at small currents, when the pi is shut down (but still powered), and also when the ...
10
votes
3answers
3k 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
0answers
71 views

Protecting the RPi against Moisture in a Refrigerator [duplicate]

Refrigerator This is a follow up to my previous question here. My chest freezer came in yesterday, and I brewed two batches of homebrew and placed them in last night. This morning, I couldn't wait ...
2
votes
1answer
423 views

Can output pin withstand any reverse voltage/current?

In my application I need to drive a stepper motor and depending on the speed of stepper motor the device that generates the drive signal is selectable. Out1 is from rpi for very low speeds and Out2 is ...
2
votes
1answer
5k 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 ...
1
vote
1answer
2k views

Can the keyboard draw too much power and cause damage?

I've been using a small, lightweight keyboard, fearful that one using a higher voltage would damage my Pi. Could I have invested in a better keyboard or did I do the right thing to prevent damage?
3
votes
2answers
392 views

How do I power down my Pi if I'm ssh'ed in?

I want to power down my Pi, but I don't have console access... I'm just logged in via ssh. So I issue sudo shutdown now and it drops my connection almost instantly. How long should I wait to unplug ...
38
votes
3answers
4k views

Can the Pi be potted in epoxy?

In order to completely waterproof some basic electronic circuits, I've often used potting epoxy to stop anything getting to the internals. However, this has mainly been with stuff using PDIP, which ...
5
votes
0answers
751 views

Is this a design fault or I shall learn how to use SD cards with PI? [closed]

My Respberry Pi Mod B arrived last week and I spent the whole weekend to try out different OSes, softwares etc. For this purpose I have to plug in and out the SD card again and again. Last night I ...
4
votes
0answers
88 views

What do I need to consider when creating a case? [duplicate]

Possible Duplicate: Running in an airtight case. Does it need ventilation? Do I need to use fire-proof materials?