I: About the De Agostini R2-D2 Kit

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How big is it?

The finished droid is 28cm wide (body plus shoulders) and 48cm tall. It’s advertised as being half the size of the original props, or 1:2 scale, but sadly it's not.

The official R2 Builders Club dome is 18.25” or 464mm in diameter. The De Agostini R2 dome is 200mm in diameter. Given that the heavily-researched R2 Builders data is pretty accurate to the film props, and assuming that the relative proportions elsewhere on the kit are basically correct, the De Agostini R2 is 87% of 1:2 scale.

In other words, since it's 1:2.3 scale and not 1:2 scale, the De Ago product is visibly smaller than its advertised size.

R2 Builders Club dome plans (registration required):

http://astromech.net/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=48771

The De Ago offering is much easier to store and display than a 1:1 model, but also has considerably less presence and impact. Still, given how expensive a full size model would be, it’s definitely just one of those things. The commercial motorized full-size R2 sold by Disney runs to about £25K. I'm sure the market for that is tiny! Incidentally the De Ago product is about 1.5x larger than the snap-together $100 droid toys sold at the Galaxy's Edge Disney amusement park.

I just wish De Ago was more honest with their advertising, to be blunt.

Electronics and mechanicals.

Its on-board electronic and motorized features are designed to replicate various tricks that R2 performs over the course of the Original Trilogy of Star Wars movies. These include animating the dome lights, flipping out motorized arms, ejecting (rather slowly and not very far) a Return of the Jedi (ROTJ) light sabre, showing a low-rez 2D approximation of Leia or Luke’s hologram using a video projector, and generally beeping and rolling around (a bit jerkily).

In this respect, compared to small advanced toys like the tiny Sphero R2-D2 or the larger Hasbro Smart R2-D2, it’s kind of staid and limited. It can’t hop and dance, change stances or (intentionally) topple. It also lacks some of the movies’ more unlikely features, such as extending an improbably long arm to work on a failing X-wing engine, or extending a camera periscope underwater. But on the whole it offers a reasonable range of fun animated features.

One unfortunate aspect is that, due to all the busywork and metal parts that make up the dome internal structure, the droid is too top heavy. This is easily apparent when he rolls around - there's a loose kind of wobbly lurching motion that could have been avoided if more weight was located lower in the body.

Three legs good. Two legs bad.

One really unfortunate design choice is that the model is always in three-legged mode for stability. The movie R2 could switch from two-legged (Kenny Baker style) standing mode, to three-legged (radio control style) mode. In real life this was performed by some awkward trickery and film edits, as the mechanical props never quite worked right.

It’s quite complicated to engineer what fans call a 2-3-2 mode: a robot capable of switching leg modes back and forth. This is because the middle leg must move up and down, and the side legs must change in angle as well. It’s understandable that the rather old-fashioned De Agostini didn’t want to engineer a fully automated product like that, as it'd be expensive to do. (unlike the engineers at Sphero, who brilliantly pulled off such a stunt for their tiny remote-controlled R2 toy) But instead they designed the feet and ankles as plastic shells with no pivot capabilities. In fact, they made the feet and ankles one plastic piece on each side, so they don't even look separate. Argh! The shoulder pivots are also fixed.

It looks to me like enough internal space could have been reserved to accommodate a foot that could be manually moved up. And it’d be easy to have a simple cutoff switch that would disable the foot motors if the middle foot is retracted. It’d then be possible to have a nice standing R2. Oh well. Perhaps the overdone dome engineering, with all of the metal framework and metal dome, means it would be too top-heavy. Still. It feels like a lost opportunity.

Could you modify the droid yourself to be permanently two-legged, with no descending middle foot? Yes, but it's not easy. Unfortunately, as noted above, the feet and ankles are basically one piece parts, so you'll have to cut them apart and then build your own bits to fill the gaps. You'd then have to cut, reconstruct, and re-engineer the angled joins where the feet meet the ankles. Finally, you'd have to cut and alter the shoulder joint cylinders to the new angle. In short, it'd be a lot of work, and of course you'd lose the motorized wheels.

Automation and communication.

The kit is also advertised as an autonomous (actually "AUTONOMAOUS" according to the De Agostini UK website) robot, and it has an on-board CPU so it can drive around. Very noisily - its motors and gears are far from silent. It has under-foot sensors to keep it from falling down stairs, wall sensors on the shoulders, and can operate in a “patrol” mode. This latter appears to be just a glorified random mode - it rolls around in various directions, halting and then changing trajectory if it encounters an obstacle. (at least in theory - a lot of people have uploaded videos showing their R2 crashing repeatedly into walls) Frankly it's not as impressive as its marketing makes it sound.

In addition to wandering the house theoretically unattended and freaking out the cats, it has the ability to interface with smart phones (Apple iPhone 5S or later running iOS 11 or higher, or Android smartphones or tablets running OS 4.4 KitKat or higher) using WiFi so you can drive it around. Initially it was supposed to support Bluetooth as well, but that capability was dropped. Also, only 2.4 GHz WiFi is supported – 5 GHz sadly is not. This could be a problem if you want your R2 to connect to your 5 GHz-only WiFi base station, but I suspect most people will have the R2 connect to their phone's WiFi directly.

There were some billing and support concerns about the product announcement, with De Ago initially claiming that the app would be time-limited with a paid subscription required to run it thereafter, but after a public outcry this unreasonable limitation was apparently dropped.

Of course, it's highly unlikely that De Agostini will keep the phone apps updated to future releases of phone operating systems past the "three years from date of release" that they have pledged. It's probably wise to keep an old phone around solely for R2 remote control purposes, so you can keep running the droid and not worry about the app becoming obsolete.

The robot has a small camera in its head, so you can watch where it’s going and take spy photos or whatever. It supposedly can recognize voice commands, though this is a sketchy and unreliable feature. Same with facial recognition, which is an advertised feature as well. One thing that makes it particularly aggravating is that it repeatedly makes the same confirmation beep noise when it receives a remote command or when you push a button. This wears thin really fast.

Sadly the device is not programmable in any way, which is really a lost opportunity for education. The upper CPU uses an inexpensive Orange Pi board, for those interested. Unknown at this time what OS it's using and how hackable it might be. Finally, the “coin slots” on the front of R2's body are cleverly used as pushbuttons. The buttons control "patrol mode," front arms in/out, light sabre up/down, pairing mode for WiFi connections, switch connection mode, and overall power on/off.

Finally, it has no published debug mode. A lot of people have been having problems with erratic or random behaviour of their droid. If De Ago had some form of debugging tool available to the public it'd save a lot of grief. For example, if the droid were to beep a specific pattern on power-up if it fails to detect an ultrasonic sensor, say, then you'd be able to focus on that specific subcomponent and make sure it's plugged in. As it is, everybody is having to unplug and reseat all the dozens of cables by trial and error.

Complexity and ease of assembly.

It's easy to put together until the final assembly stages. In fact, it will probably annoy experienced or advanced builders, who'll find it much too simple to assemble. It's designed for the casual amateur; someone with little or no experience in miniature engineering. Basically each edition of the magazine comes with a plastic bag containing one to several small parts that you put together with a small Phillips screwdriver. Occasionally superglue (not supplied) or double-sided tape (supplied) is required. There is no soldering, welding, sawing, etc, required. Painting is also optional, since most parts are pre-painted (see below).

The end is a bit more complicated, as you have to connect up a whole bunch of wiring and assemble the final bits inside a fairly crowded dome and body. Allow some time for this stage, and don't rush things!

The subscription is supplied with a few other useful things, such as a cheap screwdriver, a special stand for holding the dome upright while you work on it, a plastic storage box for parts, and a small battery pack so you can test various electrical components before all the parts that make up the whole system have arrived. Note that you should keep the styrofoam shell used to protect the dome in shipment - it doubles as a support stand while you're assembling the thing.

To summarize: if you want something simple you can work on with your family, this is the kit for you. If you want something complex, sophisticated, and challenging to assemble, this ain't it. That's not a criticism at all – just a statement regarding its intended market!

Mechanical quality of the build.

The components are reasonably well made and designed. It's quite a heavy kit, clearly engineered with sturdiness in mind, and should withstand ordinary use. Internal frames are plastic and metal, and the legs, feet, and exterior body panels are white plastic. Most components are screwed in to keep things together. The iconic dome is a single piece of turned and seamless metal, though it has an unnecessarily heavy metal and plastic underframe that makes the finished product top-heavy.

The mechanics for the parts seem good. The motors for each outer foot appear to be solid and substantial. The unit uses slightly knobbly rubber wheels, and not treads or anything like that.

How visually accurate is this R2?

In terms of visual appearance compared to the films, the De Agostini R2-D2 is pretty good in a general sense. But if you look closely many details are wrong.

And now we get into really fiddly minutiae. Most people will not, to be fair, notice any of the problems I've listed below. And even people familiar with Star Wars probably won't notice these issues unless they directly compare the kit to a photo of R2-D2.  But I'm going to list them here, mainly because I find these inaccuracies a bit frustrating, given how expensive the model is.

De Agostini advertise the product as "authentically detailed" and "movie accurate". Sadly, it is neither, though close-ish in most areas.

It's weird. Some parts of the kit are excellent - sturdy, fairly screen-accurate, well finished. Other parts are merely adequate, or deviate randomly and unnecessarily from the appearance of the original movie props. This lack of consistency dogged their Millennium Falcon kit as well. It’s almost like some parts and sub-components are designed by their main team, whereas others are designed by their “B” team.

Aside from the obvious facts that a full-sized R2 is expensive, difficult to make since it's not available in kit form, and takes up a surprising amount of room, this small model claims to offer a high degree of automation, accuracy and ease of construction. And it succeeds to varying degrees.

The De Agostini product is a model engineering kit and not a plastic model. It isn't a static shell with some detail parts glued on – it’s actually got a metal subframe with a plastic skin and electronic and mechanical subsystems for lights and motors. It even has a one-piece seamless motorized metal dome. That makes it more interesting, and arguably more educational, than just a hollow plastic kit.

Incidentally, it doesn't come with a restraining bolt; something of which I can only approve. Be free, little robot! Be free!

The shoulder is mostly one of the better parts of the kit. Here I've stripped the silver paint off the cast metal components and polished them to make them look like brushed metal. I'm going to repaint the dark blue/purple component, though.

However, there two notable visual errors. The shoulders are supposed to look like this. First, most of the screen-used droids had layered sheets of metal inside the circular area. Second, the uppermost of the two round shoulder buttons were actually installed at a strange angle. And third, the tops are all perpendicular to the sides, rather than being angled slightly, like the De Ago kit.

On the whole the R2 is much more screen-accurate than the De Ago Falcon. Their Falcon kit was riddled with tons of really minor errors and deviations that, to be honest, only really obsessed fans would notice. The R2, being far simpler and more geometric in design, is mostly correct.

However, the R2 errors are also super aggravating. Most of them simply aren't necessary. Some visual mistakes are obviously done the way they are to save money, or to make the parts easier to manufacture. But others aren't needed at all, and are simple sloppiness.

Visual errors in design.

If there's one word to sum up the problems with the De Agostini R2, it's “toylike.”

That round thing at the bottom is a wall sensor housed in soft white silicone rubber. Sure wish De Agostini had put it somewhere else.

On the left: the shoulder buttons I mention above. The upper one is the spraypainted one, straight from the factory. The lower one has had its paint stripped and the metal is roughly polished. Note how the round central area has simple white plastic walls rather than showing metal layers. Also the recessed areas should be silver, but the rounded wall edges make them awkward to paint.

Left: the De Ago part's profile. Right: the correct profile.

Not always designed for later painting.

Most of the parts are already pre-painted. And aside from the inconsistent white shades, the paint job is fairly reasonable. Though it is intended to represent a factory-new droid and not a weathered old unit that has been trundling determinedly across the Jundland wastes after an Imperial assault. It’s an industrial spray finish, fairly even, and colour-consistent across most, but sadly not all, parts.

However, it’s not an amazing job either. The blue parts, in particular, are more dull and less deep than those on the movie R2 units. They're dark and slightly purplish in tone – though that isn't a problem in itself as the original R2s had a purple-blue tone which depended on the light. There are also noticeable differences in appearance between the metal plates painted blue and the plastic pieces painted blue.

The problem is that if you want to repaint your droid it’s often awkward to do it as you go along, as you may want to paint all objects at one go for consistency. You also can’t assemble all the sub-components until the exterior surfaces are all painted.

That’s understandable, but what I find particularly annoying is that many components have two colours but, rather than making that component out of two pieces, it’s a single piece with a painted-on section. Like a bit that’s spray-painted silver with a blue bit sticking out. It would have been much easier if, like the actual R2 props, these components had been constructed out of multiple parts. And had they done so it’d have given more busywork for the builder to do! Such a shame.

The silver body panels with the blue vertical stripes (pocket vents) are a perfect example of what De Agostini should have done throughout. They’re made of two pieces of plastic - one painted silver and one painted blue behind it. This design makes it super easy to repaint properly!

Observations on the parts.

Because the kit is designed to be built across 100 issues, and because some electronic components are quite expensive to manufacture, many issues don’t really include much at all, just so that per-issue costs average out. Or they just include one or two parts that fit together in seconds. Unlike, say, a model ship which consists of a ton of small detail parts with a couple of larger hull pieces, the R2 kit includes some very expensive components such as motors, the steel dome, a CPU, and a video projector.

There are times when an issue arrives and it's got all kinds of interesting stuff and it's quite fun to assemble. And then there are times when something like this shows up. And, after you've spent your 7 seconds putting that solitary component in place without any tools you think to yourself, why the hell didn't De Agostini make this a 50 issue subscription?

Also, many parts of the model which would normally be produced as one or two large parts for a conventional product - the dome subframe, for example - are included in the subscription as tons of smallish pieces you need to bolt together. This is all fairly pointless make-work kind of stuff that also adds a lot of weight to the model. The finished R2 is actually quite heavy, in large part because of the additional complexity of its internal frame.

Here's the needlessly fiddly dome framework, with a bazillion small plates, connectors, nuts, and bolts.

A more logical design would have halved the number of issues, but that might be harder for De Ago to market profitably as then the per-issue cost would be higher. Also, and this is obviously a common problem with many kits, but much of the assembly is a bit repetitive. All the dome frame segments, and the two mirror-image legs, for example. That’s just the reality of the design, though.

Since each R2 weekly kit tends to be rather simple and limited, De Ago UK mail out these subscriptions as four packs once a month instead of single issues each week. They’re still individually packaged as weekly issues, though, so you end up throwing away rather a lot of bags and cardboard labels.

Middling-quality plastic moulding.

The injection molded parts are okay, but are not created using the most advanced processes. Let's just say it's not Bandai quality here. Take, for example, the feet, which are about the worst examples of plastic moulding in the kit. The De Agostini droid feet are made of two halves split vertically, but since the tops of each part aren’t perpendicular to the sides - they angle upwards slightly to a narrow seam - they look frankly rather toylike. (a noticeable draft to the injection moulding, in other words)

Those seams are not befitting a £900 product! Or that silver-painted part - it's just a bit sticking out, and has a bunch of asymmetrical gaps when the middle bit fits in.

The feet screw together from the sides, and come with plastic plugs to conceal the holes, rather than having the screws fit into concealed locations. For example, the feet could have been engineered such that the screws reach up from the underside, hiding them. Instead, this conventional and lazy product design makes the feet look like ordinary Earthbound commercial products rather than a droid from a galaxy far, far away.

This mini light sabre, includes with R2, is a classic De Agostini mixed bag. The shiny metal bits are awesome – they're beautiful pieces of turned metal. Hefty, quality parts. Fab! But the gold bit and the black and matte silver part? They're plastic! (Note: this sabre is incomplete - I haven’t fitted the control box yet)

Look at that plastic mould seam all the way across, and the torn patch where the part was ripped off a sprue. Argh!

Metal parts versus plastic.

Some detail components that are metal on the original design are also metal in the kit, especially those which ship earlier in the build, in order to impress buyers. But other parts are moulded plastic. All parts are sprayed a uniform silver colour to conceal the differences in material. There are a number of consequences to this.

The bottom metal piece is straight out of the bag. It looks nice and new, but it's also indistinguishable from spraypainted plastic. The upper piece, which has been sanded and polished and left to tarnish, deliberately looks a bit scruffy, beaten-up, and ragged, as one expects R2 to look like.

First, some of the solid metal parts look really great. Especially if you strip off the paint and polish the metal. The result is a very convincing and realistic component. I used medium to fine grades of sandpaper and emery cloth to remove the silver paint, sand off the seam lines, and simulate a brushed metal look. I then used a superfine foam sanding block to give the final brushed appearance, always moving the part in the same direction across the block. Some of these pieces, such as the shoulder pistons, also look extra good when trimmed back on the underside to reflect their actual prototype appearance. Parts like this really feel worth the money! Unfortunately most of the larger pieces are plastic rather than diecast metal.

The lower pieces are the spray-painted parts out of the bag. The upper ones have been sanded to remove the horrible seam lines, and buffed to resemble brushed metal.

Second, although the genuine metal parts look great when sanded and polished, they’re not all cast from the same alloys. As a result, they all turn a dull grey colour as they oxidize, but in different shades and darknesses. That may be okay if you’re going for a weathered old R2 look, but if you want an R2 fresh from the shop this is a problem. I don't know if this oxidizing would be halted or at least slowed by coating the parts with clear coatings.

These pieces were stripped and sanded at the same time, then left in a box for 3 months. Notice how the different materials have discoloured at different rates.

Third, if you treat the metal by stripping off the paint you’re going to have a continuity problem with the plastic pieces, which will still look like bits of painted silver plastic. You may have to spend some time painting them with more realistic metallic paints and concealing the differences with weathering.

The batteries.

There are fairly stringent regulations concerning the shipping of lithium power cells, particularly through second class post. This is because the cells contain a lot of energy and, if faulty or damaged, can catch fire spectacularly. For this reason the R2 kit will not include batteries as part of the subscription - you’ll have to buy them separately and have them shipped by courier. Kind of a bummer given the total cost of the kit, but there you go.

The type of cells has been published by De Agostini in their user forums. Basically you need to buy six identical type 18650 3.7 volt lithium-ion “button-top” cells. You then have to test each cell separately using a supplied device, before putting them all together. The batteries are available from various sellers. One seller who has been active on the De Agostini R2-D2 group has an article on the subject of battery safety, incidentally.

These cells look like large AA cells, but they're not. They’re pretty high-capacity cells frequently used in vaping devices. Since these things don't last forever – all power cells oxidize over time – you will need to replace the cells in the future and check them independently, and so on. This is definitely more of a hassle than replacing some off the shelf batteries. Note that R2 isn't designed to run on an external power adapter only. You have to have working batteries in there.

The magazine.

The kit also ships with a weekly magazine, including photo-illustrated instructions for assembling the week’s parts. The accompanying filler articles focus mostly on the making of the Star Wars movies, articles on the historical development of electronics and robotics, and silly in-universe Star Wars stories which talk about fictional events as if they were historical accounts. The content appears to be aimed at 12-15 year olds, which I suppose fits in with the marketing - the parents buy the kits for themselves, but work on them together with their kids, who read the junk in the magazines. Or something.

Personally I think this magazine is a seriously missed opportunity. The articles would have been considerably more interesting and useful to the reader if they were specifically oriented to the actual kit. For example - what if they explained why the various parts in the kit are designed and made the way they are? Why use ABS or polystyrene? Why are gears nylon or metal? Why not explain specifics about the electronic components in the kit, rather than generic articles about how LEDs work? Had they done something like this - focused on the real-life engineering and product development that went into the actual kit - then I think the educational aspect would have been much stronger. It feels half-assed as it is.

Early into the subscription you also get a binder, equipped with narrow brittle plastic pins, that you can use for storing the magazines. Additional binders are chargeable.

Assembly tips.

Here are a few tips that might make your build go a bit more smoothly.

II    –  Problems and Fixes: the De Ago R2

III   –  About Partworks Kits

IV   –  The Actual R2-D2 Movie Props

V   – R2-D2’s Arms and Tools

VI   –  Conclusion and Useful Links

VII   – Part List and Downloadable Instructions

This review is © 2018-19 Millennium Falcon Notes.