Fathom One | The Affordable, Modular, HD Underwater Drone

Update #11
over 6 years ago – Sat, Nov 18, 2017 at 07:01:57 PM

Hi Everyone!

It’s been some time since our last update, and there are lots of things to talk about, so let’s jump right into it.

In our last update you saw us at the beginning stages of rigorously testing the newly finalized design of the Fathom One. As a reminder, we talked months ago about initiating a hull redesign to better manage heat distribution on board the F1. We finished that redesign relatively quickly and set to work testing it. These past two months have been essential to that testing, placing the Fathom One in a wide variety of situations so that any issues could be identified. Here is a rundown of some of the updates made based on testing and rapid iteration.

Being able to use of the F1 in both fresh and saltwater has always been an important capability of the drone. Headquartered in Michigan, we’ve had ample time and opportunity to test in the Great Lakes as well as the other small inland lakes with which our state is filled. What we’ve lacked consistent access to has been saltwater. Since our last update we’ve had many more opportunities to use the F1 in saltwater locations that we’ll talk about later in the update, but this has been important for multiple reasons.

First and foremost, identifying any issue that may arise from extended use in the harsher saltwater environment. So far, this testing has all been positive. The most important thing to remember when using the drone in saltwater environments is to treat it like any other item of value that you take into the ocean. This means rinsing the drone and thrusters off with freshwater after use in order to prevent the buildup or corrosion that will happen with anything used in saltwater.

The second part of this testing had to do with ballasting. By default, the Fathom one is ballasted to be neutrally buoyant in freshwater, meaning that it naturally floats more in saltwater. The solution here is simple in theory, but takes some testing to get right. Using the action rail on the bottom of the F1, we designed a small trim weight that attaches to the bottom rail as close to flush as possible, so as to have a negligible drag effect.

As mentioned, the F1 is ballasted to be neutrally buoyant in freshwater. While it may be a simple math problem in theory, it’s a little harder in practice. We had a goal with our first batch of prototypes shown in the previous update, namely a goal of consistency. We wanted to be able to assemble each of these units in exactly the same way, and receive exactly the same results. This is a test that will be repeated during final assembly, but with each of our units behaving and hovering the same way in water we counted this as a success in our efforts to streamline manufacturing.

Another area of testing revolved around differing wireless environments during use, i.e. the middle of an office building surrounded by 20-30 Wi-Fi routers vs. on a boat in the middle of a lake. Clearly most use cases will be closer to the latter scenario, but we want to be sure everything functions properly regardless of where you land on the office-to-lake spectrum. Again, positive test results here show that almost irrespective to where you use your Fathom One, competing signals should not cause any overwhelming issues. If you do choose to use it in close proximity to many other signals, the worst that can happen is a lag in the video feedback and control. Not an ideal outcome, but also not a likely or common use environment.

From the very beginning, we’ve used attached GoPro cameras in conjunction with the built in camera as a means of capturing super high quality content. Our camera of choice has always been a GoPro Session mounted to the bottom action rail, so we also designed a mount and housing for the session. Not only does it look better, it also greatly decreases the amount of drag produced, allowing for better control. We’ll make these CAD files available for any of you Kickstarter backers that have 3D printers of your own and want to print your own attachments!

Battery life is also something we’ve been working on. Our original estimation in regards to how long a charge would last was roughly an hour of use. Through some optimization of motor controls, all of our tests have shown a battery life closer to 3 hours of use. Granted there are many factors that influence how long a battery holds its charge, from water temperature to motor speed and how frequently the motors are used, but in normal use we’ve seen a great improvement in battery life.

Many of these points of progress are not purely physical, but contain adjustments made to the software controlling the Fathom One. Improvements and adjustments like the motor control mentioned above, or the vertical up and down motion that can be triggered by pressing up and down buttons on the app. Because the F1 is app controlled, we can continue to refine the experience with feedback.

Field-testing has been taking place almost continuously since our last update. Most of the time this is done in a nearby lake, often testing new controls or features with local beta testers. Once in awhile we get an opportunity to really put the Fathom One to the test and pilot it in some awesome places. The first of these was Alpena, Michigan.

Alpena is home to the Thunder Bay National Marine Sanctuary and Underwater Preserve, the final resting place of over 100 shipwrecks, many well-preserved by the frigid water of Northern Michigan. We’ve been up to Alpena before to help judge a MATE ROV competition, but this time We took the Fathom One out on a glass bottom boat with researchers and partners at the Thunder Bay NOAA station. Swimming alongside a more traditional ROV, we dove the F1 down about 40 feet to investigate a wreck resting at the bottom in several large pieces. Thank you again to our friends at Thunder Bay and NOAA for bringing us along!

We were also able to send a drone farther from home to Kickstarter-backer Scott in the Virgin Islands. As I’m sure you are all aware, the Virgin Islands were hit especially hard by hurricanes and tropical storms this year. Scott is hoping to use the Fathom One for inspection purposes, so we sent him a unit to see if we could help out. Since receiving the drone he’s been a great help as we continue to work on the best way to get you up and running with the F1 as quickly as possible. Nothing to report right now, but we’re looking forward to seeing how he uses it in the field.

In a more exotic turn of events, we were provided with an opportunity to use the Fathom One in Oahu, Hawaii. Several aspects were at test during this trip, some of which we’re discussed earlier. Repeated testing in a saltwater is something we wanted a better chance to test, something this opportunity gave us. Another round of saltwater testing was crucial to establish good standards in care for the Fathom One.

The other important facet at test here was use in high current or rough water areas. The results were just about what we were expecting. The first clips show a bit of the F1 being piloted three miles off the coast of the North Shore in Oahu, a notoriously rough sea frequented by surfers. Danny jumped aboard a local shark cage diving ship to test out the Fathom One in these conditions and film some sharks in action. With the boat moored perpendicularly to the waves, and the swells rising several feet, it was a bumpy ride up top while currents were rocking the divers in the cage as they held on to the steel bars. Needless to say, this was more extreme than piloting in our local Michigan waterways. The Fathom One performed admirably. A side effect of being much more lightweight than other drones and ROVs is that it can be pushed around more easily. That being said, control was still possible on a higher gear, especially considering that most of the piloting took place rather close to the surface, where the turbulence is strongest. Not surprisingly, the most difficult part of this whole experience was fighting off the sea-sickness induced by looking at a tablet screen while being rocked by the waves.

Peripherally, we also wanted to test the reaction of larger wildlife to the drone. In this case, a dozen Galapagos Sharks. This species of shark is often known for frenzying over a possible food source, so you can imagine we were a little anxious about how they would react. However, after some initial interest, they just left it alone. 

On an outing later in the week – the trip was a succinct and packed 4 days – we got a chance to meet up with an incredible underwater photographer by the name of Chris Knight, who took several awesome pictures of the Fathom One during a dive. A big thank you to Chris and be sure check out more of his photography on his Facebook page and his website, BigBluePacific.com!

Manufacturing is a big topic. Finding a manufacturer necessitates finding a partner. A group that not only believes in what you’re doing but also has the experience and expertise to build it. For something as niche as an underwater drone, this can be a challenge.

We have been working at this for a long time. Starting earlier in the summer, we had a list of possible partners and began rigorously interviewing them in order to determine if we were a good mutual fit, whittling down our choices to several options with arguments both for and against each one.

This final selection process that we’ve been working through for the past two months is a tedious, yet entirely crucial one. Each individual wire, electronic speed controller, light, nut and bolt must be accounted for and the entire assembly process meticulously documented before many manufacturers will negotiate seriously with you. Part of this preparation can be seen in the videos posted in our last update where Chris demonstrates general use and charging of the Fathom One. Our efforts here focused on being able to partner with a turnkey manufacturer, so that when we got to this point, everything could be handed off easily.

Many times it can be difficult to get across through writing the importance of one milestone over another. While all paths of progress are important, some are more crucial. A proper manufacturing partner is one of those crucial milestones. That is why we are so proud and excited to announce that we’re currently shoring up a partnership between Fathom and a contract manufacturer in Ohio. This group will be responsible for the manufacturing and assembly of our full first run of the Fathom One.

Next Steps

In our last update, We outlined several of the important steps that needed to take place in order to start shipping, here's that list for reference. Let’s talk about a few of them.

First of all, we wanted to finalize a UI and UX for control of the Fathom One. We’ve completed this step and we’ve had great feedback from pilots across our testing, age 5 to 95. There can, of course, be changes made to the design and interface if needed, and pushed out in standard app updates. But for all intents and purposes, this is finished.

A pilot run was needed for quality checks. This is a topic touched on earlier in this update. We’ve done as much work as possible to validate each part of the manufacturing process, from the calibration of the motors, to each of the physical assembly steps like wiring, potting, and sealing. Our efforts here have centered around reducing the pain points that typically occur during the transfer from a company like Fathom to a contract manufacturing partner. We have validated each step of drone assembly process so that when the manufacturer gets started, we’ll have as few hiccups as possible.

The next step outlined in our previous update after the pilot run was producing the first batch of units, both Kickstarter and pre-orders. Obviously this is a much broader step than finishing UX/UI or a pilot run, but at the same time, this is the final step before shipping. There are a several parts of this process, and we’ll do our best to outline the major ones here.

The first substantial component here is a transfer of knowledge. In order to have a smooth transfer process, we’ve been in contact with our manufacturing partner to make sure their team is up to speed. Keep in mind, this is an incredibly important step, as starting off on the wrong foot during this process can cause huge headaches and delays down the line, something we would like to – and believe we can – avoid.

Following all of this transfer and onboarding will come another small pilot run. This will be used to ensure that everything we’ve validated on our own, withstands the test of an assembly line. Given that everything checks out, these units will be among the first shipped out to backers.

The final step here is one of scaling. Taking everything learned during the pilot run, we’ll make any adjustments necessary, and begin production of the full run for both Kickstarter and pre-order units.

Timeline is the last part of this left to discuss. We’re allowing an 8-12 week lead time from placing an order with the manufacturer, to having finished Fathom One units in hand ready to ship. It’s a timeline that has been vetted by the manufacturer and one we believe is fully achievable. Keep in mind that our timeline is now largely dictated by component lead-times, meaning how long it takes to have each part of the drone shipped to a central location.

A lot has happened to get to this point. Thousands of miles driven, hundreds of hours spent, and dozens of meetings held. At this point, we’re very excited about where we are and are ready to being working closely with our manufacturer to move quickly on production.

The last point we want to highlight here is that this truly is the final step before shipping. We want this to be an exciting update. We truly are extremely close. It has been a long time coming, and this project has come a long way from where it started. We understand the weight of the responsibility placed on us by our backers, and we adamantly strive to live up to your expectations by delivering an experience you’ll enjoy.

All of us on the Fathom team cannot begin to tell you all how grateful we are for this Kickstarter community. As we close in on beginning to ship units out the door, it's awesome to look back and notice all the ways you have helped shape what the Fathom One has become and we can’t wait to finally get it in your hands.

-The Fathom Team

Update #10 - A Lot to Share!
over 6 years ago – Tue, Sep 05, 2017 at 09:47:02 PM

Hey everyone! It’s been awhile since we shared our last update with you, but it’s only because we have a ton to talk about. Let’s get to it!

First things first - the most recent design update. As we mentioned in our previous update, we had to do some work to update the thermal management inside the Fathom One to ensure battery and CPU health. We took this time to throw in a few more things that will drastically improve your experience as well.

The first major update is the thruster interfaces. We’ve successfully simplified and ruggedized them so that you no longer need additional tools to attach and detach the thrusters, making packing, customizing, and servicing your drone so much easier.

We’ve also added a dedicated charge port to the bottom of the drone, allowing a water-tight connection if you’re charging your drone on your boat or dock:

The updated topside transmitter has been a major focus for the past few weeks as well. Providing an adaptable, robust, and compact option has been our primary focus. Check out the final design of the Fathom One transmitter:

This updated design is unique in a few ways. The most important thing we’ve added is the addition of mounting points for carabiners or straps:

These will allow you to keep the topside close on a dock or boat - even on a belt loop if you have nothing else to attach it to!  

You may have noticed it in the pictures above, but we’ve finalized our tether decision as well. We’ve decided to use a tether with a foamed jacketing to achieve optimal buoyancy properties, with a Kevlar reinforcing member for strength:

All of these physical updates are fantastic for the user experience, but they’re only half the story of what we’ve been working so hard on. The flipside of the coin is the drone’s embedded software, and the app-side interface. We've been working to add "abilities" that not only make the drone fun and easy to pilot, but also give you the option to take stable shots, navigate in tight places, and lessen the learning curve in becoming an expert F1 pilot.

Let’s start with the hover function. This is largely due to the neutral buoyancy of the system, with some help lended by the drone’s thrusters. When you stop giving the drone commands, it will simply “hover” in the water column, allowing you to get a stable, static shot of your subject: 

Next, pure vertical movement. This is something that we’ve been working hard on to not only make your Fathom One fun to pilot, but also practical. We know that many times you won’t have wide-open spaces to make large, graceful movements, so we fine-tuned the drone’s weight distribution and thruster controls to allow for movement in only the vertical direction, perfect for inspection purposes: 

More features to come in the next update!

Another internal update has been the development of our own proprietary firmware for the drone’s electronic speed controllers. We noticed over the course of months of testing that motor jitter was a major nuisance at low speeds. After plenty of iteration, we developed embedded software that not only gives you great control, but also zero-jitter, incredibly snappy motor response. 

Given this is a lot to take in, we want to get you as ready as we can so that when you receive your Fathom One, you won’t have to waste any time in getting out to your nearest body of water. Thankfully, Chris is here to get you setup with your Fathom One system with some tips and tricks:

We’d like to take credit for coming up with all of these features by ourselves, but we simply can’t. The feedback of the Kickstarter community, as well as that of our incredible beta testers has truly shaped what the Fathom One system is today. 

For the past month we’ve been working with our local beta testers, gathering crucial feedback on how we can maximize the Fathom One’s ease of use. While many assumptions we made early on about what we thought would be best in the app turned out to be true, many of our testers provided valuable feedback on what needed improvement.

Now what many of you have asked about - where is Fathom in the manufacturing process? We hear you! As frustrating as experiencing the shipment delay is, we’re so thankful we’ve had the time to further hone the product before we begin shipping. Here’s what needs to be done to get the Fathom One system out the door, and in your hands.

While we start producing the Fathom One at scale, you can still get your hands on a trial drone if you come visit us at Moby’s Dive Shop in Grand Rapids, Michigan during our “Field Test Tuesdays”. We’re using these sessions to get more eyes on the drone, its app-side interface, and to check for specific pain points we can solve before shipment. Check out what one of our beta testers captured on location:

We’ve always viewed the Fathom One as a community-based product, which is why we’ll be rolling out a number of really exciting things for our community to use to engage with one another, manage all your videos, and discuss how we can explore more of the world, faster. However, we never forget where we started, which was right here on Kickstarter. We’ve said it before, and we’ll say it again: our Kickstarter community has been our company’s backbone since day one. If you have any questions or concerns about our next steps, don’t hesitate to reach out to us at [email protected].

Stay tuned for more exciting updates. In the meantime, we’ll leave you with one of our youngest beta tester’s thoughts:

It’s so exciting to finally see that “light at the end of the tunnel” with regards to getting the Kickstarter units out the door and in your hands. It’s been a hard fought battle to get to this point, but in our opinion, so worth it to get you a product that will truly change how you see the world. 

We can’t wait to see what you do with it.

- The Fathom team

Update #9
almost 7 years ago – Fri, Jul 21, 2017 at 06:19:34 PM

Hi everyone!

A lot has happened in the past month on all fronts Fathom, and we’re excited to share all of it with you, so once again, let’s dive right in. 

First and foremost, shipping date. We are all working diligently here in Michigan, and everything has been proceeding according to schedule. We are on track to ship in 2017 and as we continue to move forward, we will narrow down that time frame in an informed manner. We understand the ambiguity in that statement and appreciate that it may not be the answer for which you are looking. That being said, many of these later stage production steps are not entirely in our control which can make it challenging to dictate an exact date. Rest assured, we’re committed to shipping each Fathom One unit as soon as possible and are on track to achieve that goal.

On to more substantial updates. Many of you have probably noticed, but if you haven’t, we’ve created a new video showing off the Fathom One in action. While we would appreciate if you shared it with your friends and family, and subscribed to our Youtube channel, we also wanted to breakdown the video and highlight several features.

Sharp eyes may recognize that there are several clips included in this video from our original Kickstarter video, but all of the new point-of-view footage you see was captured by either the on-board Fathom One camera, or by an attached GoPro.

There are a couple exciting things about this. First of all, we were blown away by how stable the recordings were. We anticipated that the water would act as a motion dampener, creating smoother videos, but due to the Fathom One’s unique design, intentional weight distribution, and airplane-like motion, the Fathom One creates some of the smoothest captured video we’ve seen from any underwater drone. What does it all mean? You’ll be able to capture cooler looking videos, control the Fathom One more easily, and make your friends more jealous.

On the topic of control, there is an awesome shot in the video feed where a diver (John’s dad) is seen pointing towards an offscreen underwater feature. The Fathom One and it’s pilot respond by turning to face the point of interest. Though it is a very subtle realization to make, it is extremely exciting nonetheless. What is being demonstrated in that brief clip the benefit of the Fathom One’s extremely low latency video feed. That bests even DJI aerial drones like the Mavic.is the ability to pilot the Fathom One from the livestream, observe your surroundings, in this case a human diver, and respond to them faster and more intuitively than other drones on the market.

Another point we wanted to show off in this video was that of slow speed control. While cruising through the water at high speed can be fun, it can also be rather disorienting. With that in mind, we want to insure that the Fathom One has excellent slow speed control. Several ‘gears’ have been integrated into the software control and are continuing to be refined so that you can select the speed that best fits your need.

So, now a closer look at how hardware developments are progressing. We are approaching the conclusion of our Design for Manufacturing (DFM) analysis on the new design and are quite pleased with the progress and benefits it has yielded.

One new development in the design is the use of the same thruster module for each thruster port, making it much easier to set up the Fathom One once on location. Previously we had been using unique thrusters for the left, right, and rear (port, starboard, and stern?) connection points. Simplifying this to the same thruster greatly streamlines the setup process so that you can start diving sooner.

On the thread of getting started out of the box, we’ve redesigned part of the thruster interface that will immensely simplify it. Previously, we had been using bolts as both the electrical conduits and the physical retainers for each thruster. This connection method, while novel, was not exactly the easiest to use. Thread misalignment often made it difficult to attach each terminal, and required a screwdriver to do so. Our new solution allows each thruster to slide over the stationary terminals, while thumb nuts are tightened down (by hand) from the outside. No more misalignment issues, and less need for special tools provide a much more convenient and faster setup process.

With many other subtle changes happening across the board, the DFM analysis for the Fathom One has led to a more robust, yet simpler, more intuitive product.

One of the most notable additions to the Fathom One is the completed Fathom One robotics core. Developing and integrating a custom PCB is a crucial step in the manufacturing process, that allows us to transition away from using off-the-shelf componentry, a process riddled with inconsistency and inefficiency, and transition towards a repeatable process that can be implemented at scale.

On top of everything else mentioned, We also have a rather large update to make regarding the buoy. Over the course of developing the Fathom One, we’ve received many messages from you all about the size of the design. There were concerns voiced that the buoy was close to the same size as the actual drone itself, an idea that works against the portability we’ve been building into the Fathom One. With all of that in mind, we’ve made a change to a slimmer, more compact wifi module, that we’re referring to internally as the Fathom ‘Link’. What we’ve found in all of our testing is that we rarely, if ever, had the inclination to throw the old buoy design into the water and let it float. In return for a function that we did not use, we had a large spool that was inefficient at containing the tether, and added unwanted bulk to the system. Now that the Link is about the size of an iPhone, it is much easier to travel with. The tether is now detachable from both the Fathom One and the Link, so it can be transported separately.

Speaking of the tether, we have exciting updates there as well. We’ve recently received our production tether from our supplier, and we have to say, we were impressed with the final result. It’s a custom over-braided cable that not only provides a neutrally buoyant solution, but also fantastic strain relief, not to mention it looks great!

Lastly, a product of the Link and the new tether: Power over ethernet. Also referred to as PoE, power over ethernet allows us to power the Link, off the Fathom One battery. Previously, both the drone and the buoy contained installed batteries. Two separate batteries for power meant two separate batteries to charge, which meant twice the time spent charging. PoE represents an incredible step for the simplicity of the Fathom One that further cements it as the most intuitive, easy-to-use underwater drone all without decreasing battery life.

Transitioning to the business side of things, we wanted to announce our acceptance into the Techstars Mobility program. Techstars is considered to be a top tier startup accelerator program, and for those of you that don’t know what an accelerator program is, it’s all in the name. Techstars is designed to bring in startup companies, which Fathom is one of, and provide them with resources and frameworks to help them accelerate their companies. For Fathom this could mean more mentors, partnership opportunities, manufacturing advice, etc. Essentially, it will all go to help Fathom succeed in the long run while helping you receive a better product at the same time.

Lastly, we are announcing here that we will be increasing the price of the Fathom One. Obviously to those of you who backed us on Kickstarter, this does not affect you other than the fact that you’re getting even more bang for your buck. On the other hand, if you or someone you know was planning on preordering a Fathom One unit, we will be incrementally increasing the price towards the full retail value as we approach general availability which means now is still a great opportunity to join the Fathom community. Here’s a link to the Fathom One page!

We’ll that’s about it for now. Thank you again for all the support and patience each of you has given us. In the meantime between updates we’ll be attempting to use our social media accounts more and more. Feel free to like us on Facebook, follow us on Twitter or Instagram, and subscribe on Youtube to get the latest on all things Fathom!

Best, 
The Fathom Team

Update #8 - Depth Testing
almost 7 years ago – Tue, Jun 20, 2017 at 05:57:33 PM

Hi Everyone,

We’ve been talking about showing depth testing for a little while now, so here is a look at some of the testing we did several weekends ago! 

John and I drove up to the same lake mentioned in our original Kickstarter video in order to sink the Fathom One down as far as possible and evaluate the results. Up until now we had done plenty of simulations to estimate the F1’s depth limit, and we have driven it down to about 60 feet deep. Frankly, it is quite difficult to find an inland lake in Michigan that is 150 feet deep. Luckily, the lake we traveled to maxes out at a little over 160 feet deep, the perfect location to test the F1 to its estimated limit. We jumped in a couple of kayaks and paddled out to several areas of interest pinpointed using a DNR report from the 1980’s, incrementally increasing our depth as we moved from drop point to drop point.

Trying to hit the deepest point in a lake can be a bit like following a pirate treasure map. We had a general idea what to look for in lining up with the shore line, but in order to get as accurate of a drop as possible, we wanted to send the F1 straight down, hence the lack of thrusters on the F1 in these videos. With some scrap wood, several broken paving stones, a length of nylon rope, and a little improvisation, our testing rig was ready to be dropped.

Our first stop found us at 25 meters of depth. Using the live video feed and data, coupled with the built in lights, we were able to verify that everything was still functional at 25 meters. You will notice that the video feedback on the app shows a maximum depth of 25.8 meters, although we believe that this is mostly accurate, some errors with the underlying math in the may have caused some inaccuracy with the readings. But again, we’ve taken the F1 close to this deep before, so this performance was in line with expectations.

There were a couple of stops in between the first and last stop, but we’ll skip right to the final location where we managed to hit a spot at roughly 48 meters deep. Again, we have to take into account some inaccuracy in the depth measurement, but it’s a bug that can easily be fixed in the future.

As you could guess, it is pretty dark at close to 150 feet deep, but the on board lights help to brighten up the surround area. Unfortunately, we had placed the GoPro so close to the F1 it’s difficult to see anything else in the frame. We’ve taken note of that fact so if we recreate another similar depth test to go deeper, we’ll be sure to use a better set up.

There are some other notable features you may have picked out. First of all you’ll notice the on screen telemetry. Roll and pitch indicators show you in real time how the drone is sitting in the water, and whether you’re going up or down and by how much. We are working hard on keeping these features as minimal as possible while also providing enough information for a solid piloting experience. In line with this minimalistic approach, you’ll see other dive data displayed at the top of the screen such as your compass heading, and depth, as well as your drone’s current battery life. Capturing all of this information will not only help you be a better pilot depending on different factors such as time of day, or water clarity, but will also help us to improve performance in the future!

Lastly, for those of you wondering, we understand that the testing shown here is not the most controlled method to assess the robustness of the F1. We will of course be doing proper testing in a controlled hyperbaric chamber, but this struck us as an appropriate way to show the F1 at depth in the wild. It turns out it’s more difficult than we expected to find a lake that is at least 150 feet deep without paddling several miles into Lake Michigan!

In our next update we’ll be sure to include more footage of the F1 in action, but until then, thank you again for being an example of a great Kickstarter community!

-The Fathom Team

Update #7
almost 7 years ago – Thu, Jun 15, 2017 at 08:38:29 PM

This post is for backers only. Please visit Kickstarter.com and log in to read.