GPS – Blog. by Next Thing https://ntcblogbackup.wpengine.com News & Notes. Process & Projects. No BS. Srsly. Thu, 09 Nov 2017 03:16:07 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.5 Get Turn-by-Turn Directions with the PocketC.H.I.P. Navigator https://ntcblogbackup.wpengine.com/get-turn-by-turn-directions-with-the-pocketc-h-i-p-navigator/ https://ntcblogbackup.wpengine.com/get-turn-by-turn-directions-with-the-pocketc-h-i-p-navigator/#comments Fri, 16 Sep 2016 19:19:38 +0000 http://blog.nextthing.co/?p=1015

With a GPS module and a few minutes hacking, transform PocketC.H.I.P. into an open source TomTom-like dashboard navigation system. Installs in seconds. No pesky automotive wiring necessary. Pencil stand not suggested (on your dashboard).

Ever since Scott got PocketC.H.I.P. working with a GPS module and the GPSd software, I’ve wanted to setup offline turn-by-turn navigation on PocketC.H.I.P.. While there are a handful of options in Linux, I ended up going with Navit.

Navit is in the Debian package repository, so it’s quite easy to install on PocketC.H.I.P.. But due to the enormous number of options, configuring Navit can seem daunting. After getting the basics setup on my PocketC.H.I.P., I shared my progress with Jose who helped me get the config dialed in. Keep reading after the break for full instructions, plus our config file.

Parts

This project uses the same parts and tools from Scott’s Get Your Bearings with this PocketC.H.I.P. and GPS Project.


Tools

  • Wire snips
  • Soldering iron and solder
  • Heat shrink tubing
  • Lighter (or hot air gun)
  • Hot glue gun and glue

1. Update PocketC.H.I.P.

Use apt to update the list of available packages for PocketC.H.I.P.. It’s easy, just type the command below and press enter.
sudo apt update

Note: When prompted for a password, type chip and press enter.


2. Setup Locales

locales

Locales on PocketC.H.I.P. define the region and language the software should use. For most packages it doesn’t matter too much if locales are fully setup, but Navit is particularly verbose with warnings unless you’ve set them up just right.

Type the command below and follow the onscreen instructions.
sudo apt install locales && sudo dpkg-reconfigure locales && sudo locale-gen

Use the arrow keys and tab to move around, and spacebar to mark your desired selection. Many locations have multiple entries. Select your desired region with UTF8.

Note: In BASH, && is a way to connect two (or more) commands together. The second command will run only if the first command runs successfully.


2. Install Navit

Install Navit and a few other required packages by using apt.
sudo apt install gpsd gpsd-clients python-gps navit


3. Connect the GPS module to PocketC.H.I.P.

Jump over to Scott’s GPS tutorial and follow steps 1 and 2 where you’ll learn how to physically wire your GPS module to a USB-to-Serial adapter. Once you’ve finished the wiring, it’s easy to connect and disconnect the GPS from PocketC.H.I.P..


4. Systemd Configuration

With the GPS connected to PocketC.H.I.P., you’re ready to configure some software. First turn off and disable the systemd GPS service. This might seem counter intuitive to turn it off, but the GPSd program doesn’t use systemd and you won’t display GPS data unless you disable it.
sudo systemctl stop gpsd.socket
sudo systemctl disable gpsd.socket


5. Start GPSd

To start GPSd run the command below.
sudo gpsd /dev/ttyUSB0 -F /var/run/gpsd.sock

Note: You’ll need to run this command each time you restart PocketC.H.I.P. and want to use the GPS.


6. Test the GPS

Testing the GPS with output from cGPS

Testing the GPS with output from cGPS

Quickly verify that GPS is working on your PocketC.H.I.P. by running cgps. When you see that it’s receiving location data like in the image above, press q to exit the program.
cgps -s


7. Edit the Navit Configuration Files

All of the configuration files for Navit should be placed in /home/chip/.navit, but you’ll need to create the directory and configuration by hand, since Navit does not automatically set things up for you. For an overview of the many configuration options, check out the Navit Wiki.
mkdir ~/.navit && cd ~/.navit

Note: Directory names that begin with a period are considered hidden directories. To see them type ls -al.

Download the .xml configuration file to the ~/.navit directory.
wget -O navit.xml http://bit.ly/2cr2qmn

Open the navit.xml file with your Nano and look up the longitude and latitude of the town you live in.
nano ~/.navit/navit.xml

Enter in these coordinates to line 34, replacing LONGITUDE and LATITUDE of the config file and save.

<navit center="LONGITUDE  LATITUDE" zoom="8" tracking="1" orientation="-1" recent_dest="10">

Note: Here’s how your config would look if you’re at the McMurdo Station research facility in Antarctica.

<navit center="77.8419 S  166.6863 E" zoom="8" tracking="1" orientation="-1" recent_dest="10">


8. Select a Map Region For Offline Use

Use the Navit map extractor to select the information you want available offline

Use the Navit map extractor to select the information you want available offline

On your laptop, open a web browser and use the map extractor to select a region of the globe you would like Navit to have access to even while you are offline. The Predefined Area button offers an easy way to quickly pan to the area you’re interested in and zooming allows for greater region specificity.

Once you have a the desired area in view, click the selection radial and use the select rectangle to highlight a portion of the map you want available offline.

Click Get Map! and the selected area will download to your computer as a .bin file. Rename the file map.bin.

Note: The size of the map file will vary depending on how large the region is you selected. For a complete offline map of the Bay Area you should expect a file about 100 MB, for the entire continental United States you’re looking at about 3.5 GB, and for the entire globe around 20 GB plus.


9. Copy the Map Data to PocketC.H.I.P.

Transferring offline maps to PocketC.H.I.P. from a mounted USB thumb drive

Transferring offline maps to PocketC.H.I.P. from a mounted USB thumb drive

Copy the map.bin file from your computer to a USB thumb drive. Then remove the USB-to-Serial cable from PocketC.H.I.P. and insert the thumb drive. Tap on the File Browser icon on PocketC.H.I.P. home and the thumb drive should show up in the list of folders in the left of the window. Drag the icon of the map file from the thumb drive to the chip user’s home directory.

Once the file has transferred, tap the eject log (a triangle with a bar under it) and remove the thumb drive. Then, reconnect the USB-to-Serial adapter.

Finally, open the Terminal and type the following command.
mv ~/map.bin ~/.navit/map.bin

Note: Alternatively, you could use SCP to copy the map.bin file to PocketC.H.I.P., just make sure it ends up in the directory ~/.navit.


10. Get Directions

A portion of the Navit turn-by-turn directions from Oakland to San Francisco

A portion of the Navit turn-by-turn directions from Oakland to San Francisco

To start navit, load your configuration file, and the offline map data, simple type the command below. Best of all, Navit is built for touchscreens, so it’s easy to control with PocketC.H.I.P.!
navit


chipLogo64x64

Now you built the PocketC.H.I.P. Navigator, where are you planning to take it?

Make sure to let us know in the comments below. And if you’re working on a cool C.H.I.P. or PocketC.H.I.P. project, don’t forget to share your progress with the entire community in the forum and on twitter!

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Links We Like: Restoring a Xerox Alto, Reconsidering Cyberpunk, & Investigating the Sony PYXIS 360 https://ntcblogbackup.wpengine.com/links-we-like-restoring-a-xerox-alto-reconsidering-cyberpunk-investigating-the-sony-pyxis-360/ https://ntcblogbackup.wpengine.com/links-we-like-restoring-a-xerox-alto-reconsidering-cyberpunk-investigating-the-sony-pyxis-360/#respond Fri, 02 Sep 2016 17:37:10 +0000 http://blog.nextthing.co/?p=973 Xerox Alto Photo by  Michael Hicks

Xerox Alto Photo by Michael Hicks

This week’s Links We Like follow Ken Shirriff restore a Xerox Alto, reconsider the future as told by cyberpunk fiction with Darran Anderson, and teardown the SONY PYXIS 360 portable GPS unit with Dave Jones.

If you’ve found any interesting links this week, make sure to share them in the comments below, or in our forum. We’re always on the hunt for new links to get lost in. Have a great weekend!

Restoring the Xerox Alto

In the 1970s, a computer never sold as a consumer product influenced everything that would come after. From Steve Jobs to the engineers at SUN, the Xerox Alto inspired an industry with its innovative design, features, and vision for how we could use a computer in daily life. Yet, only 2,000 of these machines were ever created!

Though rare, there are still a few Alto machines around, though not many that are operational. Recently, Ken Shirriff, a prolific blogger who covers everything electronic –from Arduino projects to tearing open and analyzing the innards of an Apple laptop power supply– was asked to restore one of the extant machines and document the process.

The startup incubator Ycombinator (YC) had received the Alto as a gift from one of the machines creators, Alan Kay. Though Alto’s were never sold, Kay happened to still have his and knew that YC was interested in obtaining one.

Developed by a research team at Xerox’s famous PARC laboratory, the Alto was the first computer designed from the start to have a graphical user interface. Not only that, it had a mouse, removable storage, was outfitted with networking, and had WYSIWYG word processing. There are 13 separate circuit boards that make up the Alto, 3 of which are dedicated to it’s central processing. These boards and the power supplies are housed in the cabinet below the monitor.

Here’s a quick table of contents for all of the blog posts Shirriff has published about the Alto restoration.

If you’d like to actually try using the Alto, there is a nifty simulator called SALTO that’s pretty easy to setup and run. Just follow the installation instructions here. And, if you’ve ever gotten to use the Alto, please share your story in the comments below!


What Cyberpunk was and What it Will Be

blade

When you hear the word cyberpunk, most people immediately think of the rainy streets of a dystopian city. Crime is rife, large companies have taken over every part of daily life, and uber high tech proliferates. Everyone in these worlds has advanced technology. And yet the most advanced tech, the tech that not everyone has access to askews morality in favor of tech for tech sake.

Contextualizing cyberpunk, Darran Anderson nails it, “Cyberpunk was, and remains, noir brought into the digital age; the black and white reinvented in neon and then LED.”* He sees the crime genre of the 1940s and 50s upcycled with technology. But despite the new duds, the moral ambiguity and fatalism of noir persist.

In What Cyberpunk was and What it Will Be, Anderson exhaustively looks at the cultural influences of the cyberpunk vision of the future. The article begins with Anderson’s own first brush with the genre, Hideo Kojima’s Snatcher for the SEGA CD.

As he sees it, the game borders on a complete ripoff of Blade Runner. Snatchers is a story of a trench coat wearing detective trying to stop bioroids from killing people. Basically Blade Runner on a console. But there’s something more than just sloppy acts of plagiarism going on here.

As Anderson continues to investigate the genre, he becomes increasingly aware that a key component of the cyberpunk aesthetic is reappropriating cultural artifacts. From the grit and drizzle of the noir genre to the infusion of technology and suffusion of pink. Cyberpunk recasts the old as the future. A conjuror’s sleight of hand.

Mondo 2000 Cyberpunk Checklist

Mondo 2000 Cyberpunk Checklist

Consider the image above from Mondo 2000, an edgier predicesor of WIRED magazine. Oozing with cool, the cyberpunk taxonomy is laid bare with a checklist for aspiring cyberpunks.

But look closely. Not only is there a checklist in Mondo 2000 to test your cyberpunk merits, the very magazine where the checklist is published is an item on the checklist. The inclusion is in once sense a joke, but it also blares another cyberpunk tenet and one that William Gibson, author of Neuromancer famously observed in The Economist, December 4, 2003: “The future is here. It’s just not widely distributed yet.”


Retro GPS Fit for the Future

Sony Pyxis via vcfed.org

Sony Pyxis via vcfed.org


This week while looking up cyberpunk images to include in the post, I stumbled on the Mondo 2000 cyberpunk checklist above. Looking closely at the page, mostly to gawk at the fun old technology, I spotted a Sony product that simply looked wild: the Sony PYXIS IPS-360.

The PYXIS IPS-300 is an early portable GPS unit sold in the 1990s primarily for use in small watercraft. What details you can still find of it are mostly in boating community forums asking for tips on obtaining replacement parts.

But there’s just something about the design of the PYXIS that seems to interest people. It’s most likely the crazy flipout circular receiver and SONY Walkman-like appearance.

In his most recent Mailbag installment, Dave Jones, who runs the EEVblog, a great website and video blog that covers all sorts of interesting electronics topics with a vibrant communit, received a PYXIS from a fan hoping he’d tear it open and explain the parts. (What a coincidence!)

In the teardown, Jones finds that the PYXIS uses the Zilog Z80, an enormously popular integrated circuit (IC). You can find these chips in everything from the Game Boy to a Texas Instrument graphing calculators. Apart from a few other specialized chips, Jones also found that some of the ICs were hand soldered!

In addition to Jones’ video, the VCFED community and Retro-GPS.info have nice teardowns too, though only still images.

While you can’t find the PYXIS at your local electronics shop, you can find a couple floating around online for a couple hundred dollars.


chipLogo64x64

Have you ever used a Xerox Alto or found a underappreciated cyberpunk novel? Do you own a SONY PYXIS? Share your story in the forums or comments below. And if you’ve got a cool Linux tip or are working on any C.H.I.P. or PocketC.H.I.P. projects, make sure to tweet about them. Have a great weekend!

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Learn How the Community Created a PocketC.H.I.P. Cell Phone https://ntcblogbackup.wpengine.com/learn-how-the-community-created-a-pocketc-h-i-p-cell-phone/ https://ntcblogbackup.wpengine.com/learn-how-the-community-created-a-pocketc-h-i-p-cell-phone/#comments Tue, 23 Aug 2016 18:44:01 +0000 http://blog.nextthing.co/?p=904 Tony using a PocketC.H.I.P. cell phone that Dave built

Tony using a PocketC.H.I.P. cell phone that Dave built

Pocketeers Juve021 and Rob Baruch figured out how to turn PocketC.H.I.P. into a portable cellular device, and they wrote two great tutorials explaining how you too can build the project.

While we love creating PocketC.H.I.P. projects in-house like Jose’s speaker hack, PockulusC.H.I.P., and emulating Apple’s System 7, it’s extra exciting to see community members developing and sharing what they’ve done.

A great place to share your projects and ideas is in our forums. You’ll find daily posts, discussions, and tips on how to get the most out of your C.H.I.P. and PocketC.H.I.P.. And if you’re at a loss for what your first PocketC.H.I.P. project should be, it’s a goldmine for inspiration and full of friendly folks happy to help out. It’s a resource not to be missed!

PocketC.H.I.P. & Adafruit’s FONA 808 Cellular Module

fona

Working independently, juve021 and Rob Baruch successfully configured PocketC.H.I.P. to work with the popular Adafruit FONA 808 cellular module. They were both able to make phone calls, send SMS, and Baruch even got celluar data (GPRS) working!

The FONA 808 module is an easy to solder breakout board that has an excellent tutorial and tons of documentation. Though the tutorial examples use an Arduino, much of it is still applicable to PocketC.H.I.P., especially when you combine it with what juve021 and Baruch have written.

Just make sure when you order an 808 you get a SIM card with your purchase. You’ll need one to connect to a cellular network.


Hardware Setup

Another shot of the FONA 808 wired to PocketC.H.I.P.

A view of the FONA 808 wired to PocketC.H.I.P.

Juve021 soldered the cellular module directly to the exposed headers on PocketC.H.I.P. with short strands of wire. Check out his forum post for details. Or if you don’t want to solder to PocketC.H.I.P., you can use a USB-to-Serial cable like Baruch’s approach. Either approach will work.


Software Setup

Using PocketC.H.I.P. to send AT commands to the FONA 808

Using PocketC.H.I.P. to send AT commands to the FONA 808

On the software side of the project, both juve021 and Baruch used the command-line program screen to send AT commands between PocketC.H.I.P. and the cell module. These commands dictate to the module what tasks it should perform and what numbers to call or send data to.

In the image above, you can see that juve021 used the AT+CSQ command to check the signal strength of the cellular connection and the AT+CMGS=”PHONE_NUMBER” command to send an SMS to a specific phone number.

Voice calls are made in a similar way. Type in the appropriate AT command to start a call, chat with your friend, and then type a few more commands when you want to end the call. The commands are a bit cryptic, but you can find out the specifics in Juve021’s forum post. And get excited, he’s working on a python script to automate much of the AT command input.


Cellular Data Setup

Rob Baruch took cellular a step further by figuring out how to use cellular data with the FONA 808. This is a bit more challenging to configure, since you’ll need to recompile the Linux kernel with support for Point to Point Protocol (PPP). Helpfully, Baruch has written a tutorial on how to enable PPP in the kernel and then connect the FONA 808 to a cellular data network.

If you’re new to compiling and deploying the Linux kernel, read over the instructions a few times so you’re familiar with the process. If you’re unsure of the process, consult the kernel compiling thread in the forums and post any lingering questions.

When using a custom kernel, it’s always a good idea to backup any important files you have on PocketC.H.I.P.. Using a compression tool to reduce the size of your backup is another good idea. A compressed archive will be faster to transfer to another computer since it’s smaller. To get the archive from PocketC.H.I.P. to your laptop, use SCP or a similar file transfer utility. Then, roll up your sleeves for some Linux fun!

And, if anything does go wrong, you can always use the online flasher to get your PocketC.H.I.P. back to the stock software image.


chipLogo64x64

How do you plan to use a cellular connected PocketC.H.I.P.? Let us know in the forums, Facebook, Twitter, or the comments below. And while you’re at it, make sure to share what else you’re working on!

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Get Your Bearings with this PocketC.H.I.P. and GPS Project https://ntcblogbackup.wpengine.com/get-your-bearings-with-this-pocketc-h-i-p-and-gps-project/ https://ntcblogbackup.wpengine.com/get-your-bearings-with-this-pocketc-h-i-p-and-gps-project/#comments Fri, 29 Jul 2016 15:05:35 +0000 http://blog.nextthing.co/?p=815 PocketC.H.I.P. + GPS = a seacoast hike navigation system

PocketC.H.I.P. + GPS = a seacoast hike navigation system

Combine PocketC.H.I.P. with a GPS module and know exactly where you are, wherever you are. (Unless, of course, you’re in a cave. GPS and caves don’t really mix.)

Scott, one of the NTC hardware engineers, was tinkering with a GPS module from our lab the other day, and in no time at all he had the little module output its longitude and latitude to PocketC.H.I.P.. This project takes about an hour if you’re new to soldering and software setup, and it’s a great way to expand the capabilities of PocketC.H.I.P..

GPS is an extremely powerful technology and with Scott’s project it’s pretty easy to enable PocketC.H.I.P. with GPS information. Since GPSd (the software you’ll learn how to use and setup) is an extremely customizable program, there are bound to be interesting ways you can extend this project and make it even better. For example, why not pull the coordinates from GPSd and feed them into the Pokemon tracker or figure out a way to pass the data to a PICO-8 game?

PocketC.H.I.P. + GPS = ready for a hike

PocketC.H.I.P. GPS plays well with maps too


Parts

This isn’t the cheapest build we’ve done. The GPS module alone will set you back around $40. But Scott has constructed the project in such a way that you can easily disassemble and reuse all the components –most especially the pricey GPS unit.


Tools

  • Wire snips
  • Soldering iron and solder
  • Heat shrink tubing
  • Lighter (or hot air gun)
  • Hot glue gun and glue

1. Modify the GPS Adapter Cable

Closeup of the finished GPS wire modification connected to the USB-to-Serial module

Closeup of the finished GPS wire modification connected to the USB-to-Serial module

The goal of this step is to add female jumper wires to the GPS module. This will make it easier to work with the module and to combine it with the USB USB-to-Serial module.

Cut and strip the end of each individual wire from the module. Slide a small bit of heat shrink tubing over each wire and move the tubing away from where you’ll be soldering –you don’t want your soldering iron to accidentally shrink the tubing just yet.

Identify each wire by consulting the datasheet. Combine the two GND (or ground) wires by physically twisting them together. Then solder a female jumper wire to them. The result is two wires from the module output as one female jumper wire. With the soldering done, slide the heat shrink tubing over the solder joint and use a lighter (or heat gun) to shrink the tubing.

Solder the remaining three wires of the GPS module to their own female jumper wires and don’t forget the heat shrink tubing.

Note: Scott added the female jumper wires to the GPS module and used a USB-to-Serial module to make this project more reconfigurable. You could solder the GPS directly to the PocketC.H.I.P. UART, but you’d have to configure more software and you wouldn’t be able to easily disassemble the build.


2. Wire the GPS module

Scott is an MS Paint wizard and cooked up this easy to follow diagram

Scott is an MS Paint wizard and cooked up this easy to follow diagram

Connect the female jumper wires from the GPS module to the USB-to-Serial module. The wires need to connect the two GND (ground) pins on the GPS module to the GND pin on the USB-to-Serial. VIN (short for “voltage in”) connects to 5V. The TX and RX wires are crossed over between the two modules i.e. RX connect to TX and vice versa. The GPS NC pin doesn’t connect to anything — NC is short for no connect.

Wiring Cheat Sheet
  • GND to GND
  • VIN to 5V
  • RX to TX
  • TX to RX
  • NC means no connection

The only wiring left to do is plug the USB connector on the USB-to-Serial module into PocketC.H.I.P.. That’s it! Now it’s time for software.


3. Attach the GPS Module to PocketC.H.I.P.

Scott testing the position of the GPS module on PocketC.H.I.P.

Scott testing the position of the GPS module on PocketC.H.I.P.

There are many different options for attaching the GPS module to PocketC.H.I.P.. While Scott wanted this project to be easy to disassemble, he ended up using cyanoacrylate (better known as Super Glue).

The way the GPS module is housed, it’s not too difficult to pry the module off without damaging it or PocketC.H.I.P.. Plus, there’s really no way for the module to accidentally fall off — a problem with some of the more temporary velcro methods.

Note: Whatever you do end up using to secure the module to PocketC.H.I.P. make sure that you don’t cover up the exposed GPIO header pins. Or, if you do, that you have ample shielding between the GPS housing and the bare metal of the pins.


4. Verifying Your USB-to-Serial Connection

Output of lsusb showing an attached USB-to-Serial module

Output of lsusb showing an attached USB-to-Serial module

Before you get too deep into the software setup, make sure that Linux is detecting your USB-to-Serial module. This module is the main link between PocketC.H.I.P. and the GPS, so if it’s not detected, there’s no way you’ll be able to communicate with the GPS.

Run the following command, which polls the system and outputs any detected USB devices.
lsusb

Look at the output and verify that PocketC.H.I.P. is properly detecting the USB-to-Serial cable. You should see output similar to what’s in the screenshot above.


5. Prepare PocketC.H.I.P. for New Software

Ensure that your PocketC.H.I.P. has a list of the latest software packages by tapping the Terminal application on the home screen and typing in the following command and pressing enter.
sudo apt update

You’ll be prompted for your sudo password, which by default is chip.

Note: While you can use the PocketC.H.I.P. keyboard to complete the project, some people prefer to set up an SSH server and connect wirelessly to PocketC.H.I.P. from their laptop. One advantage of this method is that you can easily cut and paste into an SSH session.

Optional: sudo apt install ssh installs an SSH server and you can then follow these instructions to use SSH and PocketC.H.I.P..


6. Install the GPS Software

The main software package you’ll be using is GPSd. GPSd monitors the serial port for any GPS modules and, if there’s GPS data, it makes it available to PocketC.H.I.P.. The command below also installs some packages to help organize and view the raw GPS data.
sudo apt install gpsd gpsd-clients python-gps

Note: GPSd is a powerful tool and it even has a rad hacking section of its website. It’s not to be missed!


7. Systemd Configuration

Systemd controls certain low-level services that run on PocketC.H.I.P., like when networking gets initialized and when to start the GUI Pocket Home.

In the case of GPS, you actually want to stop and disable the Systemd service. If you left it running, it would interfere with the GPSd program and you wouldn’t be able to see the GPS data.
sudo systemctl stop gpsd.socket
sudo systemctl disable gpsd.socket


8. Start GPSd

To start the GPSd run the command below.
sudo gpsd /dev/ttyUSB0 -F /var/run/gpsd.sock

Note: You’ll need to run this command each time you restart PocketC.H.I.P. and want to use the GPS.


9. Using the Viewing Software

Keep your eyes on the path!

Keep your eyes on the path!


To connect to the GPSd so that you can see the GPS data, simply type the following command and press enter.
cgps -s

Note: Depending on the font size you’ve set your Terminal to display, you may need to adjust the resolution. To increase the size, tap the magnifying glass with a plus in it. To decrease the size, tap the one with a minus.


Whether you integrate this project with the Pokemon tracker or pull the coordinates into a PICO-8 game, whatever you do with PocketC.H.I.P., make sure to share it! Send us a tweet, share it on Facebook, or join the conversation in the forums.

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