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Raspberry Pi

Hey everybody!  Do you like pi?  More specifically, Raspberry Pi? Well I made this to you can get help, share ideas, and chat about it! 

Topic by nancyjohns    |  last reply


Raspberry Pi

Hello everyone I wanted some suggestions from the users of raspberry pi on where to start after getting the raspberry pi. I've searched the web and found a lot of things, but they weren't exactly beginners friendly. I am upgrading from an Arduino to a Raspberry pi and the difference between them is enormous. Arduino seemed a lot more welcoming and easier compared to Raspberry pi. So do you guys have some tips or places to start from for me? Any help is appreciated. Thank You

Topic by robo10302    |  last reply


Raspberry pi

Hello, I have to create webcam server system that consist USB web camera, raspberry pi. The system will function like this : 1. Raspberry Pi will take a pictures every 30 seconds. 2. raspberry pi have to send the pictures (MMS of the picture) to the owner mobile phone and email ID. i just want to ask several question. 1. can raspberry pi send MMS? i think i want to connect raspberry pie to the wireless broadband modem, so it will send MMS thru email. possible or not? or there is another alternative to do this thing? 2. Is there any chances owner can reply via mobile phone or email? how the owner mobile phone want to confirm back to raspberry pi? reply the email or what? i hope anybody can help me. and also can provide me any website link that can help me to understand more about all of this.

Topic by chaitanyabysani    |  last reply


Raspberry PI

Hi,I would like to ask you information if with Raspberry Pi, are able to use and check electrical voltage? If if the voltage decreases, it turns off a device.thank you very muchEmerson

Question by EmersonFerreira    |  last reply


Raspberry Pi help?

Hey people, is there any way I can add usb or hdmi ports to Raspberry Pi? I sort of want create a Audio/video splitter out of the Raspberry Pi. In a way it'll be a advanced video ratio box.

Question by tdoyley    |  last reply


Raspberry Pi Philippines

Raspberry Pi Philippines

Topic by lpuyod    |  last reply


Raspberry Pi Category

Is it possible to make a raspberry pi category in the technology section? Due to the increase in projects and popularity with micro-computers, it would be great to create its own little category.  Any Supporters? 

Topic by cam1235    |  last reply


Free Raspberry Pi?

I can't afford one currently and i thought it wouldn't hurt anything if i asked the community of makers if they had a extra raspberry pi to give away or if they had a raspberry pi model A that has been replaced by the model B.

Topic by prototypeBOTs    |  last reply


Raspberry Pi Composite?

I have built the Ben Heck portable Raspberry Pi.  I had it working, but then I bumped the case and after that, the video will not start up.  My wiring to the monitor is all still good, and I know that it is getting power.  The only thing is, that during the bump, the video data and ground cables may have shorted.  Could this have caused the problem?  Whether it did or not, can anybody please help me fix it?

Question by pianoman99a    |  last reply


Arduino or Raspberry Pi?

Well I am a 16 year old High School student interested in engineering and things of that sort. I recently took an engineering class at my school and was thoroughly pleased with the concepts. My father is also an engineer, and would like me to dive deeper into these sorts of things. Being a long time Instructables  user I came here to seek guidance. Most of the Instructables of recent times have used Arduino and/or Raspberry Pi. I would like to learn more about these tools and what they are used for. Which one do you think is better, easier to use, and/or faster to learn.  

Question by Sean_Voodoo    |  last reply


Is this possible with the Raspberry Pi?

So I have recently purchased a Raspberry Pi and I finally go the time to mess around with it a little bit.  So far i have only installed the NOOBS software and have downloaded the recommended Raspian operating system, and have been using it as a desktop computer.  That is all I have done so far.  So I have an idea of something i want to create with the Pi.  I also have the camera module for the Pi and I'd like to put it to use.  I would like to have the Pi, with the camera module attached and operating, in one location, with a monitor of some sort, possibly a cell phone or just a display i would purchase, and have the camera wirelessly send the video feed to the monitor.  I'm assuming this is possible because i have seen instructables on here where people use the Pi to make security cameras. My idea is similar, just none of the ibles i found quite hit the idea on the head.  So, i guess i'm looking for someone to tell me if this is possible, and point me in the direction of how to go about doing this, or if there are any ibles on here that are exactly this that I have missed. Thanks

Question by texpert    |  last reply


Raspberry PI power?

Hey yall! I just recently bought a Raspberry Pi! Those of you who want to order know how hard this is, so Im pretty excited because i didnt think Id b able to order for awhile. Anywho, I wnat to make or buy a portable power supply for it, but I am not sure how to go about doing that. I know there are tons of portable CHARGERS out there for iphones and what not, but I am afriad these will attempt to "charge" my PI, therfore frying the board. Do they just supply power and the device recognizes power being recieved, so it displays charging? And I will be attachin a BUNCH of things via a usb hub to the Pi, so I doubt regular bunch of 4 rechargeable AAs will pwer my device for long with all thse extrra things drawing power. So my question is 3fold: can I buy one of those portable chargers to power my Pi or will it fry it? will 4 AAs be enough to power the Pi and all the extra usb things? and will it be more cost efficient to make a power supply? (I definetely want it be rechargeable, though). Any links to products, or guides to make one would be extremely helpful. Thanks in advance!!! Also, I already have a wall supply, but I need a power supply that is portable.

Question by Adum24    |  last reply


Android on Raspberry Pi???

Hey Instructablers! I was wondering if it is possible to put Android software on a Raspberry Pi? if not could you put ubuntu on it??? just wondering... Thanks to anyone who responds!!!!!!

Topic by jackjackboom    |  last reply


Raspberry pi and MHL

Can you control a raspberry pi through MHL. My aftermarket radio supports MHL to control android phones and display the screen as well all from the USB and the cable. So, I was wondering if the raspberry pi could be controlled the same way. I've though of installing a USB touch screen overlay on top of the radio to control the raspberry pi that way and provide video with rca converters or just the rca 3.5 jack on the raspberry pi. Any clues or advice?

Question by chtcode  


Raspberry PI Power

Hi, I have a 10v 80mA supply available from a serial device. I want to use this to power a Raspberry PI, however I need 5v and 2A. Does anyone have any tips on how I can get the power available from the serial device to power the microcontroller?

Question by New2Node    |  last reply


Raspberry pi. Oops. Answered

I just got my brand new raspberry pi model b in the mail yesterday. Today I was booting it and plugging it in and I slipped and broke the little silver thing (right next to the power plug) clean off. I haven't checked to see what it is yet but now my pi won't boot. What should I do? Could I solder it back on? ( I can solder pretty well) or should I do something else? Please help.  Thanks, Bud

Question by budhaztm    |  last reply


Vote for Raspberry Pi!

Http://www.theinquirer.net/inquirer/feature/2400814/inquirer-unveils-tech-hero-awards-shortlist Pi 2 is nominated as both Best Developer Tool and Best Product, and Eben Upton has been nominated in the Tech Champion category. Vote for the Pi and Eben to win! http://www.raspberrypi.org/forums/viewtopic.php?f=63&t;=105891 Also VOTE here by commenting 'Pi2" https://www.facebook.com/MCMElectronics/photos/a.277947428940.142952.47440088940/10153036671103941

Topic by DELETED_bertwert    |  last reply


Raspberry pi program

I am complete beginner. I am trying to write a program for the Pi b+ that will let me count pulses (~2 or 3 a day) and display the result in an accumulating counter. Could anybody point me in the right direction please? Also does anybody know how to transfer a program written on paper using 2-7-3 to the latest Raspian?Thanks in anticipation, Alan

Question by AlanH191  


Raspberry Pi questions

Hi! I have some questions about Rasberry Pi. 1. Is it hard to get a working power button? 2. Do you have to press any key when the Rasberry boots up every time?.    I mean on a keyboard.. 3. Can I connect a SATA dvd reader?. 4.  Will the dvd reader work with Rasbmc ? 5. Can I use my Android phone as a remotecontrol?. 6. Can I use any pc remote control for it?. 7. Is it hard to install Rasbmc ?. Thanks alot!.

Topic by Davve95    |  last reply


raspberry pi touch screen

I have this touch screen http://www.seeedstudio.com/depot/bmz_cache/f/fab0724a7d0b1839477e9cbfa903f165.image.300x225.jpg is there anyway that i can hook it up to my raspberry the screen works on my ardino uno

Question by dsl158    |  last reply


Connecting Arduino to raspberry pi

I need to connect the Arduino to raspberry pi and program both with labview Is there any instructions please

Topic by mustafaa201    |  last reply


Raspberry Pi Zero W

I received a Raspberry Pi Zero W kit (from Adafruit) over the holidays, but it didn't come with any doco. And I haven't found much by Googling. Does anyone know of information that could help me get started? I haven't worked with any Raspberry Pi product.

Topic by arshag  


VirtualBoyadvance for raspberry pi zero

I just got my raspberry pi a couple of days ago and  want to put a gba emulator on it. I saw a emulator for it called visual boy advance for the raspberry pi zero, but it comes in a .deb file, could some one help me install this to my pi please   download link: http://www.mediafire.com/download/rarkjssi65hly0r/vbam-r947_i386.deb

Topic by minecraftpotato  


PDA screen for Raspberry Pi

Does anyone know if I could use a Dell Axim x51 screen as a monitor for my a Raspberry Pi and if so how? Thanks Denny

Topic by Leviset  


measure distance with raspberry pi?

How should i measure 10 meter distance very accurately with raspberry pi ?  if anyone knows any sensor that can measure distance of 10 meter accurately please tell me then i will manage ? thank you.

Question by dharmik123456    |  last reply


Messages From Raspberry pi

Hello Everyone,I am trying to use my raspberry pi to send messages via the internet to my phone. What I want to know is, if it is possible without using any cellular connection or services like twilio? I want to do it over the internet.Please help me with this.Cheers

Question by Bhabeshr  


Web Interface for Raspberry Pi

I'm trying to control a led on  raspberry pi 3  using apache server  with  php programming. I am following this instructable link  https://www.instructables.com/id/Simple-and-intuitive-web-interface-for-your-Raspbe/   I have tested server, its working with simple php program but when I write program for led, it doesn't work When I check file it say permission denied  How to resolve this issues ?

Topic by Rehan11  


LVDS board with raspberry pi

Hi there, I recenlty purchased a M.NT68676.2A LVDS board and connected up to my raspberry pi. All of this is working fine however the setup at the moment looks like frankensteins attempt at a pc, so i was wondering what is the best way to go about building a box to contain my setup, bearing in mind i have no CAd or the like expereince and no access to a 3d printer (no small ask i know) I want the box to be able to support a 15" laptop screen and have the ports accessible on the outside. Look forward to some ideas. Thanks

Topic by RobertW292  


Raspberry Pi sensing audio?

Hi all -- I have been programming all kinds of things all my life, but I have never had a chance to build a program that responds to audio input.  Suddenly: Dancing Baby Groot.  I have a great idea for an algorithm for making a very clever and funky Dancing Baby Groot using Raspberry Pi or Arduino -- if I can figure out how to get the processor to "listen" to audio input. How would I get one of those processors (or any processor) to "listen" to the mic and translate it into either digital or analog data which one could then plunder to figure out the tempo and beat in order to get Baby Groot to Dance?  I am 100% sure I can do the plundering (because it works on digital files) if I can get the processor to "listen" to the mic and create a file of numbers which represent the music being played. Any suggestions?

Topic by TheFrankTurk    |  last reply


temperature logging with raspberry pi

New here, and to Pi/Python looking to log data from a few different sensors from Atlas Scientific (RTD & PH).  I've gotten really stuck so fare in getting these going and was wondering if anyone here can help me out.  so far I've used this code:  import smbus import time import datetime #SMBus(0) - Raspberry Pi Model A #SMBus(1) - Raspberry Pi Model B bus = smbus.SMBus(1) #I2C address of sensor address = 0x66 def temperature():     rvalue0 = bus.read_word_data(address,0)     rvalue1 = (rvalue0 & 0xff00) >> 8     rvalue2 = rvalue0 & 0x00ff     rvalue = (((rvalue2 * 256) + rvalue1) >> 4 ) *.0625     #print rvalue1, rvalue2     return rvalue print("Temperature Data Logger\n") while True:         #Open Log File     f=open('tempdata.txt','a')     now = datetime.datetime.now()     timestamp = now.strftime("%Y/%m/%d %H:%M")     outvalue = temperature()     outstring = str(timestamp)+"  "+str(outvalue)+" C "+str(outvalue*1.8+32)+" F"+"\n"     print outstring     f.write(outstring)     f.close()     #log temperature every 10 seconds     time.sleep(10) I've got the two sensor boards connected to the raspberry pi 3 mounted via a Whitebox Tentacle T3.   The boards are in i2c mode and i can see them using sudo i2cdetect -y 1 (they show up address 63 and 66)  but when i run this program above I just get a red error light when it reads the temperature.   The log file reports a measurement of 2C and 35.2F which is not correct but the red light on the board tells me that the Pi is trying to connect with it.   Anyone able to help?

Topic by Chair_t  


raspberry pi in portable DVD player

Hi! i have an old dvd player that i dont use. i would like to know how i would go about of turning it into a mobile raspberry pi. i dont care for the DVD playing ability. i want to hard wire the PI directly into the player without using actual AV cables. anyone know how i could go about this or have any links for this? thanks

Topic by hiyall1  


Removing USB from the Raspberry Pi?

Hey guys (and girls),       I'm working on a TOP SECRET ;) project with my Raspberry Pi and size has become an issue. I would like to know if removing just the top USB port from my Pi will cause issues. I only need one USB port anyway, so if I cut away at the top one (without destroying the other, or other parts of my board) will my Raspberry Pi function the same? I saw a site (http://www.oliverjenkins.com/blog/2012/6/changing-usb-socket-on-raspberry-pi) where a guy had all sorts of issues removing the whole thing, but I just want to remove the top one. Thanks in advance!!

Question by Adum24    |  last reply


Raspberry Pi PC temp checker

Hello forum, I'm planning on buying a raspberry Pi this week. I know a couple programming languages, but only the basics. I've had this idea for quite a while: Connect multiple thermal sensors to the Pi, and then connect the Pi to my old Android cellphone (Nexus 2), and mount the phone to my PC case, so I get read outs for the PC components (CPU, VGA, PSU, HDD, and so on). Can someone help me, and explain how I can do this? I see it as a fun hobby to get into programming, and also reuse a cell phone, so I don't throw it away.

Topic by GeorgeK31    |  last reply


How to control OMXPlayer in Raspberry Pi?

Does anyone know how to control the OMXPlayer media player within the raspberry Pi?  I tried the online suggestions of the key bindings available here but http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63? but it doesn't work either in the terminal or in as hot keys.  I'm using the OMXPlayer that came embedded with the newest version of Raspbian. Any help is appreciated!

Question by SHIFT!    |  last reply


android app -> raspberry pi -> arduino !!!

Hey! I want to make a very simple android app with buttons... Each button has to be a "shortcut" for a specific command which will be sent from my phone to raspberry pi 3 with ssh.. These commands will simply power some arduino pins to give 5V ( like ser.write('3') which turns on pin 3 ). But I can't figure out the way to do what i describe with bold... Any help??

Topic by ΦώτηςΘ    |  last reply


Raspberry Pi and arduino bluetooth module

Hi there, I'm currently workin on a project which consist of controlling a arduino robot ( with this [url]https://www.adafruit.com/products/1588[/url] bluetooth module on it ) from my raspberry pi. I found this tutorial [url]http://blog.dawnrobotics.co.uk/2013/11/talking-to-a-bluetooth-serial-module-with-a-raspberry-pi/[/url] and followed it without problems ( i just had troubles pairing my devices but now it seem to be OK  ;)  ). So i wrote a little piece of code ( i did not try the code in the tutorial ) to see if my robot was receiving order from my Pi but when i run this code, there is an error : [code]Traceback (most recent call last):   File "test.py", line 6, in     bluetoothSerial.write("avancer")   File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 485, in write     raise SerialException('write failed: %s' % (v,)) serial.serialutil.SerialException: write failed: [Errno 107] Transport endpoint is not connected [/code] Here is the code : [code]#! /usr/bin/python import serial import time bluetoothSerial = serial.Serial( "/dev/rfcomm1", baudrate=9600 ) time.sleep(5) bluetoothSerial.write( "forward") #Which normally make the robot go forward[/code] Please help, It's been two days that I try to solve this problem  :cry: PS: Sorry for my English ( i'm french and high school student) Thanks :)

Topic by retrobotic    |  last reply


Motion stream crashing [Raspberry Pi]

Recently, I've been toying around with a USB webcam and a little addon called "Motion" on my rasberry pi 2. My goal was to make and dd treating webcam. I successfully done this, but not without encountering a major issue. When I connect to my stream, it works for a few seconds, then motion crashes. I can tell because the little light on the webcam goes out. Why on earth is it doing that?

Topic by Dashing Rainbow Dash  


Raspberry Pi Zero Dedicated Console

I have written a small 15 Puzzle game in Java—the only programming language I am fully comfortable with. I’m satisfied with the game itself and would like it to have a simple platform on which to play it rather than it just being a .jar on my computer. I would like to make a small handheld with raspberry pi zero just to run the game on boot and let that be that. I plan to use a usb encoder to map the buttons, so I don’t have to worry about programming the gpios with Java (as I have found this to be a bit of a hassle). I would love any ideas or assistance regarding the best way to play the Java program on boot and maybe a way to effectively shut down the handheld without potentially corrupting my microsd. Any other neat ideas or tips for the project are also, of course, quite welcome. Thank you!

Topic by ToggleSwitch    |  last reply


Control steppers with arduino or raspberry pi?

We have this robotic arm at our school that is broken and we are trying to make it work. The motors are shot and we have no idea were the controller went. We are just going to put stepper motors instead. The problem is we have no idea how to control the motors. So my question is: How can you control 6 stepper motors individually using an arduino uno, arduino mega, or raspberry pi?

Question by JohnM703    |  last reply


Will this power my Raspberry Pi safely ?

Its an external HDD power supply. I get a reading of 5.3 volts thanks

Question by talicohen    |  last reply


Raspberry Pi and android surround sound Answered

Hello, I was wondering if it is possible to use a Raspberry Pi as a bluetooth surround sound transmitter, and multiple androids as a bluetooth speaker? Is there a plugin card for the Raspberry Pi that can transmit to multiple bluetooth devices at once if the device can handle splitting the audio in the first place? Thanks for any help

Question by jbaker22    |  last reply


Raspberry pi 2 processing capability?

Hearing the announcement of the new latest and greatest Raspberry Pi 2, now a backwards compatible computer with a 0.9GHz ARM Cortex-A7 quad core processor and 1GB of LPDDR2 SDRAM, I was wondering of the feasibility of using it as a very cheap and basic solution for a simple computer for my lab. Currently, I am using a compaq presario C700 Pentium Dual-Core laptop, that has been maxed out with 2GB 800MHz kingston RAM, and is running Kubuntu. I should also not the HDD has been replaced with a 120GB one from an old and broken Xbox. I do not like it much anymore, because although the performance of it is acceptable, the screen is a bit low res, at 1280x800, it's pretty dark (or at least until it 'warms up' to full brightness), it had a major scratch on the screen, (no idea how it got there) and after buffing it out with many methods, including with an eraser, the area has became discolored, like a portion of the screen has higher gamut and brightness, and lower black levels. :( Oh well. The main killer for it is that it's form factor. It is too big, heavy, the screen is too small, and it is very cumbersome to use far away in the corner of my workbench. Of course being a laptop, the 'base' of it is fixed to the screen, and to move it closer to me takes away lots of valuable space on my really messy bench. I mostly use it to research part numbers, get schematics off of google, watch YT videos, log data from serial ports (including my UNI-T multimeter with basic data-logging capabilities), and stuff like that. I may have as many as 20 tabs open at a time, which did tax my old compaq C700 when it had 1GB of RAM, but that was likely due to a memory leak issue with chrome, since I have the SAME issue with my main desktop, with 8GB of DDR3 RAM. If the video by MAKE is anything to judge, it looks just as powerful, as this embedded video is large! https://www.youtube.com/watch?v=pZz8MW3DSqA My hope is to replace it with a raspberry pi, and be able to use it for these basic operations w/ a old LCD monitor which can be picked up off of craigslist for cheap. Maybe I can even find one in the dump :P. Maybe I can configure the GPIO pins to be COM and parallel ports, w/ clock, Tx, Rx, and everything else! That way an external FTDI chip and using the limited number of USBs is not an issue. Is that possible?

Question by -max-    |  last reply


Navigation using gps on raspberry pi

I want make robot that displays maps, when we mark a destination on the maps, it goes to that destination using gps on raspberry pi, how do I implement it thank you

Question by Pranay ReddyK    |  last reply


Can't the Raspberry Pi Multi-task?

I've seen a lot of tutorials showing how to do this or that cool thing with your Raspberry Pi, but I haven't seen any tutorials showing how to do several things at once with the device. For instance, is it even possible to control a stepper motor and servo motor all on one Pi?

Topic by BradysoBOT    |  last reply


Error in installing Apache on Raspberry pi ?

Hi everyone  I was trying to install LAMP on my Raspberry pi and got this error  Can anyone tell me what went wrong ?

Question by HadirRashed1    |  last reply


Switch on EL wire with Raspberry Pi

I have bought a small 3 m length of EL wire along with a portable 3v controller like this one: http://www.elwirecraft.co.uk/340/portable-inverters/portable-driverinverter-for-3-metres-of-el-wire-2xaa-batteries/ there is a tactile push button which cycles through the operating modes (on, flash, off etc) id like to be able to turn the EL wire on using my raspberry pi.  I have opened the controller and soldered 2 wires over the push button contacts such that when you touch these wires together, it has the same effect as pushing the button. thats as far as I have got.  Has anyone got any idea on how to us the raspberry pi GPIO to switch this on?  Transistors are a bit foreign to me, especially ratings and required resistors!

Topic by Bananaman100    |  last reply


DSLR camera raspberry pi help

I was looking to build a raspberry pi canon battery grip (basically this thing: www.davidhunt.ie/raspberry-pi-in-a-dslr-camera/) I have some basic knowledge of the Pi and a reasonable amount of electronics experience, I was just wondering if you guys could help me out with a couple of questions as well as any other details that you think would help me build this: 1) How do you get the image data off the camera using the Pi/ get control of the shutter over USB 2) Is it possible to set up an ad hoc network to monitor and control the camera as well as download the pictures from an android phone or laptop (and how would I do that) 3) Any other ideas for cool things to do if i attach a pi to my camera? 4)The ideal powersource would be one of the canon LP-E8 7.2V batteries, anyone have any insight into a genius DIY connector for one? 5) Could it be used for recording/controling audio to videos? i.e. (http://beachtek.com/dxa-slr-pro/) but obviously more simplified 6) as an additional note, would it be possible to use the camera buttons and screen as the interface for the Pi computer (or at least the screen, so that I dont have to double to effective size by including a screen) for reference: the camera I have is a canon 600D and the battery grip is the generic type for 500/600D

Question by guy coop72    |  last reply


Thoughts on Arduino/Raspberry Pi Idea?

Hi everyone, I am part of a research group at UC Berkeley working on a product involving the Arduino/Raspberry Pi. We are conducting market tests, and would really appreciate your help answering these questions. Thank you for your time! If you use Arduino/Raspberry Pi, how often do you use it? How do you use it? Would you consider it mostly a hobby or do you use it for school/industry as well? How were you first introduced to it? What are your general thoughts on the Arduino/Raspberry Pi? Did you learn to program by using the Arduino/Raspberry Pi or did you have some prior experience? If you had prior experience, how much? What languages are you well-versed in? Would you be interested in a model-based approach to programming Arduino/Raspberry Pi functions? This would be something akin to Matlab’s Simulink or Labview’s visual programming (flowcharts). The basic idea would be to remove the need to code in C. If you are not interested, why not? If you are interested, what specific features would you enjoy? Do you believe such a tool would be an efficient way to teach/introduce students to programming? In addition, here is a 1-minute survey (on a similar subject) if you are interested: Survey: https://docs.google.com/forms/d/1dkwyhC59I7h8IOuNFyL_tbjo7AFucTP0KQS0mYH1qy4/viewform

Topic by RobertB3  


Raspberry pi 2 processing capability?

Hearing the announcement of the new latest and greatest Raspberry Pi 2, now a backwards compatible computer with a 0.9GHz ARM Cortex-A7 quad core processor and 1GB of LPDDR2 SDRAM, I was wondering of the feasibility of using it as a very cheap and basic solution for a simple computer for my lab. Currently, I am using a compaq presario C700 Pentium Dual-Core laptop, that has been maxed out with 2GB 800MHz kingston RAM, and is running Kubuntu. I should also not the HDD has been replaced with a 120GB one from an old and broken Xbox. I do not like it much anymore, because although the performance of it is acceptable, the screen is a bit low res, at 1280x800, it's pretty dark (or at least until it 'warms up' to full brightness), it had a major scratch on the screen, (no idea how it got there) and after buffing it out with many methods, including with an eraser, the area has became discolored, like a portion of the screen has higher gamut and brightness, and lower black levels. :( Oh well. The main killer for it is that it's form factor. It is too big, heavy, the screen is too small, and it is very cumbersome to use far away in the corner of my workbench. Of course being a laptop, the 'base' of it is fixed to the screen, and to move it closer to me takes away lots of valuable space on my really messy bench. I mostly use it to research part numbers, get schematics off of google, watch YT videos, log data from serial ports (including my UNI-T multimeter with basic data-logging capabilities), and stuff like that. I may have as many as 20 tabs open at a time, which did tax my old compaq C700 when it had 1GB of RAM, but that was likely due to a memory leak issue with chrome, since I have the SAME issue with my main desktop, with 8GB of DDR3 RAM. If the video by MAKE is anything to judge, it looks just as powerful, as this embedded video is large! https://www.youtube.com/watch?v=pZz8MW3DSqA My hope is to replace it with a raspberry pi, and be able to use it for these basic operations w/ a old cheap LCD monitor which can be picked up off of craigslist for cheap. Generally old 4:3 monitors go for next to nothing. Maybe I can even find one in the dump :P. Maybe I can configure the GPIO pins to be COM ports, w/ clock and everything else! That way an external FTDI chip and using the limited number of USBs is not an issue. Is that possible?

Question by -max-    |  last reply


Reading Electric Meter with Raspberry Pi

We have a meter outside of a building which displays how much energy the building produces (Solar Power) and pumps back onto the grid, how much the building uses from the grid, and the difference. Every day we record these numbers, and enter them into an excel spreadsheet, so we know exactly what the efficiency is of said building. The issue is, is that this building is empty for most of the week, and driving to and from the building costs time and money. So, the idea is that we have a Raspberry Pi connected to a camera photograph these numbers, and send them to us via email. How would you have the Pi take pictures? Specifically, what camera would you use? The screen is a ~3cm x 12cm LCD display (Similar to an alarm clock display, no colors) The clearance inside the box is about 10-15cm from the screen. The box itself is transparent, but we'd like to keep the camera inside the box, as the plastic isn't 100% clear (weathering), and it would also look more professional.  The box is waterproof, but not moisture proof, so it would need to be outdoor rated. Or is there some type of device we can put over the screen, and then have it copy what the screen displays? The screen/meter itself cannot be tampered with, as it belongs to the electric company.  This camera/device needs to be able to be sourced in Europe, and would be nice if it wasn't too expensive. Semi off topic: Would it be possible for the Pi to somehow analyse the images, and convert the numbers in the pictures to text?  Taking it one step further, would it be possible to have it automatically enter these numbers into a spreadsheet? This display cycles through about 10 different "screens", of which only 3 are needed. Could the camera be used as a motion detector, and when the numbers change, it takes a picture? This would be repeated 10 times, so that every screen would be captured, and then the needed images would then be sorted out, manually or automatically. If any more information is needed, just ask. Thanks!

Topic by RocketPenguin    |  last reply