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0
votes
2answers
38 views

Increase raspberry pi voltage

Say I bought you a RC car as a gift, that works on 24v battery. You decided that RC car is boring and want to control it with raspberry pi 2. There are two motors on the car. You bought a voltage ...
0
votes
1answer
26 views

Does PI go to sleep or does it stop supply to USB if the drive is not being used for some time?

I have a 80G hard disk attached to my PI2B and I have a couple of software running on it. I noticed that sometimes the disk becomes inaccessible and I would need to unmount and remount the partitions ...
3
votes
1answer
67 views

Remotely connecting to the PI to download images

I'm trying to build a little project (my first) with my Pi which is running Raspbian. I want to set up a camera on my piece of land where I'm going to build my house to take some time lapse photo's. ...
0
votes
1answer
84 views

How to achieve Low Power Consumption on Raspberry Pi via Software and Hardware control [duplicate]

Would like to enquire if anyone could list any/or all possible ways to achieve low power consumption on the raspberry pi. I have found that one could disable the USB ports of the raspberry pi . ...
2
votes
1answer
180 views

Help on powering 3.3V fans

I'm not 100% sure if this is the right form to post in, and I'm not the best writer... so please let me know if I make no sense. So I'm doing a little project and was wondering on how I could power ...
2
votes
1answer
288 views

How to make the Raspberry Pi consume less power

What methods can be used to reduce the amount of power a Raspberry Pi uses?
0
votes
1answer
140 views

Wire 5v to raspberry pi b+ without microUsb

On the original model b it was possible to wire power to the tp1 and tp2 (which ran through the fuse and was protected?) I am upgrading my 3d printer to run with a b+ but the b+ does not have the same ...
0
votes
1answer
70 views

Turn TouchScreen Backlight Off after Shutdown

I have seen some questions on turning HDMI screens off but my question concerns GPIO attached touchscreens. When I run sudo halt -h on my b+, the OS(hacked version of Raspbian to work with ...
4
votes
1answer
107 views

Raspi with readonly fs, does power loss still do damage?

I plan to use a read-only filesystem to lose power without corrupting data. I know some routers are designed this way. Are there any problems besides the filesystem I should be aware of?
0
votes
1answer
44 views

How can I charge a jawbone up using raspberry pi?

I am curious if it is possible to change the 3.5mm jack output on the raspberry pi to use it to charge a jawbone up fitness tracker?
0
votes
1answer
527 views

Pi / Pi 2 using modern 'smart' USB Power Adapters to supply power to the Raspberry?

Once upon a time there was only one way to charge a usb device and that was done at 5V and 500mA max, or so I've been told. 'Modern' USB Power Adapters like the Apple 1Amp, 2Amp and 2.4Amp and many ...
3
votes
1answer
172 views

External HDD will not spin down

I am having an issue with my external hard drive and it is quite annoying. So, I purchased the Samsung M3, for the sole purpose of acting as a mass storage device for my Raspberry Pi. Lovely. I ...
0
votes
0answers
102 views

Does the Raspberry Pi have USB power saving mode?

I have an issue with my Raspberry Pi 1 (Model B). It's connected to a USB hub (external power supply) with a card reader (keyboard emulated - plug&play). Everything works fine and all but if I let ...
5
votes
2answers
229 views

Power regulation circuits on B+ vs 2 (light sensitivity)

I've seen recent articles on the Raspberry Pi 2 being affected by a light source (http://www.raspberrypi.org/forums/viewtopic.php?f=28&t=99042) . Apparently the cause is in the power regulation ...
6
votes
5answers
13k views

Will any external battery power a Raspberry Pi?

I am working on a project that needs the Raspberry Pi to work without a mains connection. I have considered buying a 50000mAh USB power bank. Would this power a Raspberry Pi, and if so, would it ...
9
votes
2answers
962 views

Is it possible to create a keyboard shortcut that acts as an on/off switch?

I just got a RaspberryPi and I'm completely new to linux and all the intricate details of programming. My issue with the RaspberryPi is the difficulty with turning it on and off. After doing some ...
5
votes
0answers
352 views

Running RPi on Solar Panel and battery [closed]

I’m quite new in electronic projects and so my basics are quite limited. I've been reading a lot regarding this topic (refer to the title) and I’m currently planning to buy the suitable Solar Panel, ...
0
votes
1answer
648 views

B vs. B+ power consumption

I've read several comparisons of the Model B vs. B+, and they mention that one of the benefits of the B+ is it has lower power consumption. With the same processor, and most of the same components, ...
3
votes
2answers
682 views

Car computer how to connect to car battery and also not drain battery when the car is switched off

I am doing research on creating a car computer with raspberry pi (so I have all the basics down before I start this project) and I am looking on a way to switch the whole device automatically whenever ...
0
votes
0answers
73 views

Is a Pi able to put a monitor connected via HDMI to standby?

I've installed xset and tried to send the monitor to standby with xset dpms force standby The screen goes black, but the power LED doesn't start to flash, so the monitor doesn't seem to be in ...
1
vote
1answer
2k views

Raspberry Pi B+ usb port disable

Is it possible to enable/disable arbitrary usb port in ArchLinux via console on Raspberry Pi B+ and at the same time others still work?
0
votes
1answer
328 views

Using Raspberry Pi to make Internet TV box (Power on/off issue)

I need to make a box (STB), which when plugged into TV can display live streaming URLs and can be controlled from remote control. So that a user can have the same experience as of a traditional live ...
2
votes
2answers
294 views

Does Raspberry PI Model B+ Works Over 24*7 and 365 days continously? [duplicate]

Does Raspberry PI Model B+ Works Over 24*7 and 365 days continuously??
1
vote
1answer
93 views

HDMI -> VGA idle power?

I have a HDMI -> VGA cable for my Pi that works well when I want to use it. The cable stays slightly warm even when not in use, but connected - I would like to know if it's possible to "shut down" ...
5
votes
3answers
1k views

Pi Headless: How to confirm that the Pi is shut down

I am running my Pi headless connected to my wireless router using a ethernet cable. I wanted to shut down the pi remotely even when I am not connected to it using SSH/Putty to shut it down ...
0
votes
2answers
147 views

Using battery pack as a UPS

I need to use raspberry devices as mini servers. I'll need to install ~100 of them in different locations. In those areas, electricity power offs are quite common, so I'm thinking using a cheap usb ...
0
votes
1answer
62 views

powering a RPI with its circuit from one wallsocket

I want to power a RaspberryPi with 54 LEDs (24 white, 24 warm white, 6 RGB - probably all at 20mA or something like that) from one wall socket. I'm planning to use the Pi to control the LEDs via ...
1
vote
1answer
157 views

Does the Raspberry Pi camera module have any power saving modes?

My question is related to this one I just asked But this time, I want to know if I can cut the camera power. A FAQ says it draws 250mA, but I don't always need it to be on, so are there any power ...
1
vote
1answer
214 views

How to cut power, especially by sleep mode and disabling peripherals?

I've never used the R. Pi before, but am considering it (model A) for my application. The main attraction is the hardware H.264 encoder, but not the power consumption :( I've read about a few power ...
-2
votes
1answer
130 views

Voltage controlled current amplifier [closed]

How to amplify current 1A, 5V from the 5mA, 5V??. More Particularly, In input side, i have 10mA and 5V and output side required 1A, 5V. Thanks.
2
votes
4answers
132 views

Will my Pi will be fine if I use those el cheapo chinese power adapters? [duplicate]

Title says all. does these cheap power adapters can harm my Pi anyway? and also, lets say these things stop providing less than what required (less than 5v and less than 0.7A), what will happen to my ...
1
vote
1answer
82 views

Safest way to shutdown my media center

What is the safest way to close my raspberry pi media center? Can I simply unplug it or are there big risks of getting corrupted data on my SD card.
1
vote
1answer
65 views

RPi running too many accessories

I am new to the PI. I am building a pi that will have cameras, sensors and all sorts connected to it. I am wondering even if I use an over powered power supply at 5.3v will it really be enough to ...
1
vote
1answer
84 views

Make Pi poweroff secure?

I made a little device that solves a specific task. It gets turned on and off by powering it up and down. Now I had a corrupted file system for the first time. That's why I'm thinking about a strategy ...
0
votes
2answers
648 views

Auto-reboot on hang

I'm using my Raspberry Pi for data logging. I have a cron job that collects data every five minutes. The Pi is connected to the internet to another computer that collects this data. It sometimes ...
4
votes
1answer
4k views

Hard drive not detected by the Pi

My raspberry pi is unable to detect my external hard drive, I'm wondering if I might have messed up in my setup. The hub is connected to the pi in two ways: from the hub to the pi's microusb to give ...
0
votes
0answers
32 views

is there a way to connect pin to shutdown [duplicate]

There is the little trick of connecting pin 5-6 to load in recovery mode. Is there an equivalent trick I missed to shutdown properly the pi using only a jumper ? There is also the p6 connector, is ...
1
vote
1answer
222 views

Shutting down my Pi safely

I was looking at How to shut down RPi when running headless and really happy to see the awesomeness! So, is it possible to use udev rule to shutdown my Pi when I switch off the router that connects ...
3
votes
2answers
2k views

Creating halt/wake button?

I have rigged up a wake-from-halt button using pins 5 and 6. These two pins, when connected, will reset power and reboot from halt. I want to use this same button, if I can, to run a command that, ...
1
vote
2answers
1k views

Start Raspbmc via Logitech Unifying receiver

I have a my Raspbmc connected to my TV and i control it with a Logitech Unifying receiver Keyboard (Logitech k400). On this Keyboard there is a Power-Button that can turn on the connected PC, but it ...
2
votes
3answers
3k views

Power issues when connected to tv via usb

I have attached my raspberry pi to a tv and it is powered via the tv's usb port. The problem is that the raspberry pi shuts off a few minutes after it starts up. I am fairly certain that this is a ...
1
vote
2answers
469 views

How to regulate current when peripherals or servos draw a large current? [closed]

I am creating a Raspberry powered WiFi car, called the PiCar :P In the current design the entire system is powered from a single 9V battery which was salvaged from the same RC car which provides the ...
5
votes
2answers
2k views

How to make Raspberry Pi suspend to RAM?

My application only uses Pi very occassionally and only a few seconds each time. It would be ideal if Pi supports suspend to RAM feature to save maximum energy. (I am thinking of the next step of ...
3
votes
2answers
5k views

Highest current raspberry pi can take from usb

I'm going to be working on a project from a DC power supply, and I need to know the maximum current the Raspberry Pi can handle from the USB port. I know my wall wart adapter that came with my Pi ...
2
votes
1answer
730 views

RPi: Handling large quantities of amperes

I have read on the Raspberry Pi Foundation's website and forum that RPi Model B rev 2 should not get more than 1200mA of power on a 5V power source. This post (Safe to power a raspberry pi from a 50W ...
27
votes
2answers
6k views

Disable LAN9512

The LAN9512 is the hardware device which controls Ethernet and USB ports. This chip consumes almost 200mA, and it will be very useful to disable it to save energy when I don't need USB or Ethernet. ...
2
votes
1answer
5k views

Controlling 240 volt power supply (via Relay) with Raspberry Pi

I love my little raspberry pi, and I am reviving an old home automation project, but instead of transmitting (in the old project, a butchered remote control) a signal at 433MHz (described here) to ...
5
votes
2answers
880 views

Display Powersaving Options (Pi powered on display USB)

Scenario I'm building several wall mounted kiosk that will be placed in remote locations and i'm trying to find a way to build in some longevity / power saving options (IE put them to sleep when the ...
1
vote
2answers
15k views

how to disable raspberry pi power management? [duplicate]

I am using my raspberry pi as a headless server. The problem is that after a couple of hours of inactivity it seems to enter a power suspend state where it disappears from the web and refuses ssh ...
25
votes
2answers
26k views

How much energy does the raspberry pi consume in a day?

My searching efforts have failed when trying to find this. On average, how much energy does the raspberry pi consume in 24 hours ( minimal usage vs max usage in a day AND usb vs micro usb powered)?