Pragmatic 66: Haptic Taptic Tactic

6 November, 2015

CURRENT

Apple are pushing Haptics in more of their devices each release. We look at why they are and how they’re doing it differently.

Transcript available
Welcome to pragmatic discussion showed the practical application of technology by exploring agreeable trade-offs with our great ideas are transformed into product services that can change our lives nothing is as simple as it seems pragmatic as part of the engineered network other great shows that engineered.network today pragmatic today is brought to you by many makers of helpful apps for the Mac metrics or one word.com/engineered more information about their amazingly useful apps will talk about them more during the show on your host John Gigi and Andre today my co-host Carmen Parisi is gonna come pretty good young, ill are very good thank you regards wonderful and ready to tuck taxi and authoritative sit my Errol press coughing I'll really not us yes well I actually had a cold brew coffee arm but I heated up first which is set may sound confusing to some people but sometimes is what I do in a hurry it's exactly quieter that way that makes sense as it is night arises modestly PSO can consider a home stands as an aid to a pre-ground my bins last night so we got the wave are nice see that Sebago makes perfect sense that call so arm just to other things that I was hoping we could talk about today is I suppose in recent times and the last R12 months Apple has been moving toward away from our vibrant vault that the change in their vibration technology that they use for discrete our message indication and are moving away from vibrating arm like rotational motors and are moving to wire linear motors and they're calling it dark there tactic engine and it was an air quotes for those in big picture that haptic engine arm which is a form of haptic feedback and I guess maybe that's where we should start habit you would like to lean on and explain to listeners the differences discreetly sure sure Saul will back it up first arson is the difference between just clean all vibrations and haptic feedback on vibrations are a more old school and the general disuse to get the users attention on the very cheap to implement and the good firstly simple on off applications or receive the applications we just want to say hey something is going on on you have a message you have in email whatever arm this alarms going off are haptic is more complex than a simple vibration and it's more costly to implement because of that and it's used in things like touchscreens and videogame controllers. I doubt we want more than just on and on off and our church one example would be a valid car reversing if you have a backup camera and maybe some feedback on the steering wheel vibration would Rogers vibrate when you certain distance from an object 50 inches to refute whatever arm to haptic feedback would vibrate the steering wheel and a different strength in different frequency to give you more detailed view of how far you are away from things that are just too close call Greg out right so on with respect to the whole vibration thing arm because I guess vibration were electoral engineers up when we are I can still have an opinion about vibration because another mechanical phenomenon but still in care arm its army is essentially an oscillation centred around our given point in and random vibrations do not generally in issue although not generally and I have that makes any sense but I guess it's more the periodic repeated oscillations around a common point when they amplify and resonate as an as you want that like a tuning fork but other times you don't want and if anything is actually if if you one in my line of work specifically vibrations generally your enemy you know because vibration leads to fatigue stress and failure of components you know so vibration sensors like the examples in the gas turbines I work on the gas compressors are water pumps wastewater wastewater pumps go vibration is bad and eventually if left unchecked little that in the imbalance the cause of vibration are will destroy the equipment if left unchecked so I guess for me the funny thing is to about vibration is that vibration is generally destructive in my line of work but talk about electronics vibration in this case it being used for the messaging is done is obviously what we we hope not destructive now I suppose if elected vibrating I constantly all the time you probably would cause fatigue stress in similar solar joints or solid joints dipping upon you which hemisphere still depend on how good your QA department was here now I suppose so but only I guess I wonder by Emmanuel their mind that that that's a real note Naomi unified experiment and our listeners who may not know arm you are ceramic caps can vibrate our doom was, like restriction which is the inverse of the piers electrical fact our electrical forces because mechanical motion instead of mechanical causing electrical motion and I was wondering if you get the vibrating engine to vibrate at the same frequency as the captain just have some Crazy feedback loop that he can call you experiment you have an insurer okays against in the article range and you can hear your phone vibrate cell now that's true I guess it's possible the couple and bite our boardwalk was all about the audible thing belated exotic heard me that's one thing I can't stand at vibrating motors but that's okay so all right and if you will know more about things like like the differences between reinforced vibration damping and so on then feel free to ring up was in the Wikipedia link knock yourself out very mechanical and that's from the widest and let it go there are but yet you're freely more very interesting but you know so anyway quite so little brief history when pages came out pages pages in the other silly things that are back in the 80s I think it was they were all the rage and I think drug dealers and the doctors is a drug deal that with the drug dealers yes okay that focus on the doctors the legitimate professions there we go so that anyone is at work that could afford one because they are also always on call right so you have this thing equivalent belts and it was about the size of our deck of playing cards I suppose you know and it was a heavy plastic thing and anyway so the vibrator would simply go go off and let them know that there was there was a message for them we see things of your change they reduced in size and power and so on but there was supposedly discrete but like you said I would know a lot is my brain was quite audible I did talk about summer stop briefly on our episode 38 watch this time and space which is the wheeling initialising ongoing listen to when the Apple watch came out though it was different because they're not using the traditional are rotational are off centre arm mass vibration units that they have in the past are those particular ones are called the ERM site which is eccentric are rotational mass so instead Apple decided they gonna go with a linear actuator art which is a linear resident actuator or LRI for short so the thing is that all of Apple's previous devices although iPhones prior to that or used ERM is the first device to use a an MRA was the Apple watch and that's why I found it to be interesting at the time I asked our John Gruber on Twitter because he had a test unit and party Ross had one I asked him if it was audible or not and he actually she went to a covered close the door and was able to confirm for me Twitter balcony said nope you can't hear it was just me I was silent and I like I like the silence you know Linda's eye I can't stand the noise so it was for me that was why the key decisions while got myself another watch in the end what's happened since that moment is that Apple is now released a whole bunch of products that incorporate this thing they're calling the tactic engine and a court tactic I guess because I feel like a tapping sensation which is something that you can't really emulate with an eccentric rotational mass and it's because I suppose the vibration profile is different so I can very different what they've done with a tactic engine of a given it to names Apple given two names one of them is the arm it's coupled with their touch technology and its bits it's a bit interesting is that the two different things you got forced touch and got 3D touch and is the haptic engine is involved in the feedback of both of those so it's sort of like the feedback component of those and is the thing to keep in mind though is that the actual haptic engines that are behind them are actually totally different between them and the overlap isn't isn't the same over not making sense so okay on the Apple watch and is on the iPhone 6s success plus they use a linear moving mass in their LRI whereas on the magic trackpad to and the MacBooks and the MacBook Pros they all use are a series of four independent weights and they are all individually actuated within underneath the trackpad so it's actually exactly difference at all call is like the naming of the technology that they're using the using. Someone three dozen the other but one of the 3D touches which is on the iPhone is actually using the same actuator is in the Apple watch which they call for such it's confusing it's just marketing I get it I know that but you know so I don't talk about the 3D touch or the all the forced touch or anything like that that's just marketing Eisler talk about the actual linear actuators and the differences between them so let's forget that the actual user use the one with the branding site the linear actuators balance between two springs so we can imagine that there is what I call a moving mass and is moving mass is just a hunger steel nothing special rock creating a read that there were a linear dip neodymium magnets yes yes that's right are well are we sure about that because III had a look it was done now is actually precision micro drives I think you those looking to you and and precision micro drives do manufacture these LRI's and a bunch of other ones as well some ERM's and go and they talk about those magnets but I don't I could not find a definitive equivalence with the one that Apple is using it that what what seems pretty clear to me is that the design of the one that Apple is using our is our it's either Apple designed or it's our it's not a publicly available product it appears to be so has been made for them so it's yet it's not something that you can look up specs for this not like you is like a standard ship Mulligan ASIC on a thing I guess I also was special well yes yes they are but I guess the point is that it's not seconded by off-the-shelf you can't just dial up these guys I had given one of these is tactic things that something that that they are manufacturing specifically for Apple and that makes it difficult to get specs on so what we know we know based on teardown is what we know we know based on x-rays and that people take in disassembly and some model information is available so will get somebody tell a minute but anyway I see Apple Watches displayed in front of you in pieces just for this podcast that's dedication now though I did actually briefly consider it was brief was I do know if it was in a sec. range of brief but it was a brief moment run like you know what the heck with this honest are pulling my my my watch apart to get the dimensions and the matters that I'm looking for and unlike number in every back together are no that would be an example of the barometer that I took apart when I was a kid also did not go back together anyway it's so yes I am okay right I just need to get back on topic now then that is okay so are delivered that the mobile honour I guess I call the two different haptic engines just differentiate in the mobile tactic on the desktop tactic tactic half haptic tactic tactic gosh sorry as it comes with rights of the mobile tactic in the desktop tactic almost again now there's a link in a giant twister episode after year to about step 12 of the iPhone 6s teardown by iFixit has an actual x-ray Hideo which is so cool of the actual tactic actuator in action and you can see this thing when I send the pulse to it and you can see it vibrating back-and-forth of the moving mass moves from left to right it is held in care in place between two springs and the areas and electromagnets are coil working against the magnet of some description and near nabbed you to set up before the lob from Leonel thank you yes Alan is what this is why you're on the showmen this thing can pronounce all the stuff I can't print you did see like that on my resume IDS ICS goods it came with them can pronounce really big words lovely so anyway and that magnet thing are saying that the idea is that RB pulse that once or twice and it will then react against the main Air Force you can then reverse polarity that and it will then stop it and that's the whole point is that you have very precise control and based on the damping of the strip springs as well would determine how long lost late for naturally before we stop at anyway so the key element for me is the actual mass the actual mass of that moving mass and that to me is within things are Alex focus on exploring that most during this episode because I find it fascinating being either the x-ray video you guys were maybe 10 seconds or so shows about two or three pulses very very cool highly recommend checking that out are now the desktop tactic engine are they have a disassembly of the MacBook Pro 13 inch so steps 11 through 14 are again Lincoln the show notes love iFixit art shows what that looks like a legacy is completely different so either safe or separate coils or separate are moving mass is contained therein is very very different they work on their working eggs either working against a common bar if that makes sense it's hard to describe in words but it's a very different actuator okay and I suspect the four different actuators their pulsing groups are based on the amount of haptic feedback they act requires the let's say because on the MacBook Pro when you when you push down just gently for a single tap you go very light response and that mimics the physical switch that you would ordinarily be pushing from the older trackpad and a force press will give you a much heavier response and that proper uses multiple actuators so I suspect that it's actually are pulsing 123 or four of them on or off based on the intensity of the tap sensation is trying to replicate so anything and are you feeling very carefully put your finger are let let's say you've got some soaked your two hands presuming most people would have to hands but one finger one index finger on the left-hand side one on the right-hand side but only press down with the one on the right and then on the left you can feel the sensation much clearer when you put any pressing down something it changes the either response and the nerve endings in your finger so you will have one you just using just the feeling AIC can feel through the other finger that the tap profile the vibration profile as you pressing down on the trackpad so is very clear when you do that you can feel the different stages and intensities of the haptic feedback through the actor through the keypad through the trackpad so that anyone our way of things is also interesting is if you take your what this there your sensing finger if you'd like off of the actual trackpad service and onto the body of the MacBook Pro all MacBook what have you got arm with the four-star trackpad it's much less pronounced on the main body of the MacBook Pro are significantly fainter and is a good reason for that will talk about later okay so before we go into all of the details in the numbers and the figures that I'm however reason I find interesting is I just want to say again okay tries I might I just I could not find the exact piece of information is looking for right I could not get all the dimensions I could not get all of the masses because when they pull these things apart blaming iFixit on teardown sites and so on for whatever reason they didn't get out the micrometre and tell me exactly how thick the battery was exactly how thick the tactic engine was then pull apart and sail the spring ways this March and the moving mass ways this much so unfortunately and with a lack of manufacturing details we have to make a few assumptions I think that their assumptions and I think they make the point but let's just see where that takes us arm okay so the Apple water-soluble watch am I meant to ask Carmen arm now I am you don't I know you have a Mac you have a MacBook go pro or MacBook laptop correct correct I have my most new windows do stuff very good no problemo arm I can't live if you have an iPhone user five mass 5S okay so by this still has the original arm eccentric and one of which it is called the minute of the eccentric feedback that I'm an eccentric man that I attended a negotiator fits perfectly good so arm the next one is have an Apple watch no I do not okay okay so that's okay folks just just lean on the fact that I have an Apple watch a success plus and a MacBook Pro so you are you are the authority idea what I only between you and I must plan this conversation I gasp when developing onshore may have these anyway so I have a 42 mm arms sports Apple watch so will start with the Apple watch now the other was introduced in 24th of April are this year that's 2015 UK solicitors in the distant future sport model 38 mm model are ways about down 0.88 ounces which is 25 g the 42,000,001 which is what I have is 1.05 ounces of just 30 g that's the that's the body of the watch doesn't include the band as all the bands have different mass stainless steel model is the habit heavier at 1.4 ounces the 38 mil is 40 g or 1.76 ounces for the 42 mm 50 g I just want talk about sport at this point so there is a teardown and iFixit like this teardown is in iFixit is 11 anyway the link in the show notes and shows the tactic engine and is on step 14 so the thing to keep in mind is this an x-ray comparison I again Lincoln show night showing 38,000,042 mm each watch has a physically different sized haptic unit but it is a good reason for that is a set search far and wide could not find one dimension the moving mass so we can estimated by a few facts first of all we get the relative size because we know the size from our the x-ray photos relative to the rest of the body size of the actual units which we do know both but we do know those numbers the tactic engine is encapsulated in a case that case is the same depth as the boundary depth the boundary depth based on scale images is about 5 mm deep on the 38 and 42 mm so we assume that the shallots have to consumes about 2 mm usable height that's given the thickness of the shell itself as well as the airgap clearance around the moving mass to let it move freely then let's say that the moving mass got about a 3 mm depth now think it's perfectly reasonable number because if you look at the success and the success plus then those I do have measurements for that are precise also about them later than 3 mm in the ballpark siding is a reasonable estimate guesstimate to run with so approximate outside dimensions of the 38 mm moving mass is a 10.3 x 11.3 x 3 mm again thrilled is assumed now inside the moving mass is actually a cut out psycho over a rectangular cut out and is no for reasons and its dimensions are 6.1 x 6.3 x 3 mm gives a total volume of metal that the moving mass is about 76 mm³ now the 42 mm mole arm it's moving mass is 13.6 x 11.2 x 3 and inside dimensions are 6.8 x 7.1 x 3 inaccuracies a total volume of of metal of 106 mm³ next assumption the density of steel and I know that the density steel is me relative to what alloy it is okay so obviously and I don't know what alloy it is so important part in input in a.m. our dear what I call those things mass mass penetrometer hope Yarra gas chromatography notes for gases over gas chromatography allied I'm in either I signed a single big words are what you did okay as you find you win anyway no I did not figure out what kind is to assume it's just ordinary steel I acres it's cheap and simple I doubt stainless it might be Bruno's slightest run with it an average at about 7.6 g/cm³ so we can convert all this out and figure out the 38 mm moving mass is about .6 of a gram that's about 2.3% of the overall mass of the watch body itself the 42 mm ways in about .8 g that's about 2.7% of the total weight of the watch body intralesional something so relatively weak in actually feeling on your wrist here we see this as the whole thing is that this is what I find fascinating right is that what what you would do if you are designing this is you've got two things your trading against your saying I need to have the most are distinct arm sensation of tapping that is not to faint but not too strong because if you make it too big and heavy that's gonna consume more energy in order to actuate if you make it too big and heavy also at the mass and the weight of the watch itself and obviously it also takes a more physical space so your it you have to minimise it as much as you can because you want to make it light as possible but you still want to be out of the all that tapping sensation and I would say that the figure that they properly settled on was around about 2 1/2% the moving mass had about 2 1/2% or thereabouts of them of the mass of the overall body of that watch in order to make it a consistent sensation because if they didn't care if they just want to have a common yell at the keyboard keys Nikki what right like who cares all the keys are exactly the same so the Q was always a lacuna matter where it is always the same so it doesn't matter if the tactic engine was like the Q on a keyboard well it would just be the same size same dimensions every single product but it isn't and I suspect the reason why is because they want to have a consistent tap sensation across all the different our watches what I would love to know and I don't have the information for is I'd love to know the actual mass exactly and I'd also like to know that when the mass of the of those in gold and in the inner stainless steel models because if my theory is correct then I would suspect the tactic engine would be slightly heavier where that figure why not longer whatever I suspect it would bore BB properly slightly thicker so the dimensions of the actual tactic unit case would have to be the same 20 different models but the moving mass inside would probably be different silos in either of the dead that you because otherwise you know so anyway that's the watch so little about the iPhone 6s and our success plus actually not before we do… Quickly talk about our sponsor for this episode that many tricks so many tricks they are a great software development company and their apps do like the name suggests many tricks their apps include Butler chemo Leach desktop Kirk to curtain our time sink after move name angler 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Garth Baum offered to go now and obviously as a before was branded for such apprentice 3D touch yes totally different and I are brother and destiny that I managed in the haptic technology so let's talk about that now I have far more precise dimensions and matter and am for these which is interesting so the tactic engine in a particular case was 35 x 6 x 3.2 and the tactic allows a success and the success plus is 15 x 8 x 4.9 and that's the part that is interesting because if you look at that 672 mm³ for the success and 588 mm³ for the success plus but here's the problem I don't have accurate figures for the moving mass those dimensions are the external dimensions of the tactic unit this is when I felt like Palme Bonaparte because I really really wanted to know and I have done everything I can think of and I simply cannot come up with a decent set of approximations because I don't have enough photos of it pulled apart all I have is an x-ray so unfortunately I can't apply the same logic to the success or the success plus however what I can say from personal experience is that the success plus but I have is really it actually is audible like I can hear it not as fearless unlike the Apple watch I wish I had more information on the success and success plus unfortunately I just don't arm if someone out there can give me those dimensions I'd love to run the numbers but you know what unfortunately unless I go have a complete fit of insanity unlock and restrict my own iPhone 6s loss although the thought occurred to me of scouring eBay look for someone who destroyed theirs and then maybe get one importer partners pretty soon but that a most people were the open the supply has been so constrained for the success success plus arm as it was for these sixes and 6+ last year so you but I even so I can't imagine that be can be broken once for sale at this point broken Apple was maybe designed Fixit's elbow tactic parts to replace it your iPhone procedures by which you need you know and I looked I couldn't see them so my new phone expensive to our engineering firm the artwork you say you are no known of the role and that's we find gassing money, ha ha yeah right is that what we do and write lovely arm there were a couple nights I did make know about the success and success plus is that they are actually heavier both the success and success plus are heavier than the six and 6+ so there heavier than last year's model and part of the reason is the tactic engine right absolutely is a unfortunately there is also more mass about an extra 15 g more are in the massive screens and other interesting factoid for you is that the success plus they sacrificed a little bit of the battery in order to fit the tactic engine in there because this is take up a lot more space than an ERM and arm it's interesting that they made that trade-off so clearly Apple is decided that that's a trade-off worth making silly things they're bigger there heavier and they are although again see know what over to you that go through some of the reasons why you think are it would be better like let's just compare and contrast the differences between ERM and LRI why on earth would you consider going to an LRI over an ERM why would you do that you think are slow it's much less power hungry than that an ERM shall guard the reason for that then we could send a hall hyper so typing about resonance in series and parallel residence but some if you model an ERM electrically as in RLC circuit it's a series resonance circuit and an LRI when you model it will actually electrically as a parallel residence circuit on to the ivy on the CRO and parallels that of Justin series and are the simple high-level view just for this podcast on in a series resonance circuit the current going into the motor is maximum at the resonant frequency and in the parallel resonant frequency of the LRA are when you residence the current as at a minimum so using less power to drive it then the ERM you and obviously that's a big deal as you try to conserve your your your energy so if you do cut off a little bigger battery size you're actually winning as a net when overall because you are you using less energy in the end every time use the vibrating motor scrapped things are good trade-off to me the other thing that is interesting also arm is the difference are haptic profile that you can generate with an LRI so for example you can numb when you got rotational energy really only got off and the speed at which you rotate but the problem is that the amount of energy required to to get up to speed at which the vibration reaches the mat the actual level that you're looking for the peak to peak arm vibration you're looking for our you don't really have a heck of a lot of actual variability in and control its it's almost like you for your on the best you can do is have that that silly pulsing thing that they are the vibrating ones do you know a guy reroute regroup and unarchive a bank near here as opposed to the RA where you can actually accelerated different rates you can have because you've got more precise control you can actually have shorter pulses that are closer together see acting like a tablet that much closer together like a machine gun going off I guess arm but anyway and that intensity is is variable hence on the what you can actually have arm prominent feedback and even most prominent feedback you can actually have different levels they can have theirs like an off completely obviously that's nothing and there is a middle like a medium to high and in this prominent which is I guess is three different levels of haptic feedback anyway okay so that's pretty cool arm honestly I don't have much else to add about the reasons behind this and in and the map buys these fascinating and is an interesting trade-off and for me it's been absolutely transformative me because I've done is I've just turned everything off all my audio and I I rely solely on the Apple watch tapping me the tactic engine on the faintest possible tap art for all my notifications across the board I go silent ring tone I've just set everything to sound off tap tap tap that's it and I love it because men really do get the phantom Arrest like You Sometimes Do with Your Leg When You Think Your Finds Irene but It's Not Not yet Not yet but I Suspect That It It's a Synaptic Path Is Gonna Start Me Are Going in My Brain and Eventually That Have What That's Probably Inevitable but for the Moment At Least I'm I'm Enjoying the Fact That That's Not an Issue so You May Be Something That Will Happen, but Let's Hope It Doesn't for a While Because I'm Enjoying It and What I Enjoying Though Is That I Don't Have That Noise I Don't Have the Buzzing Are Anything like That You Know My My Success Plus Taxi Turned off All the Vibration on but I like the Tactic Engine Because It Makes Noise I Can Hear It Sitting on My Desk I Can Hear I Am Not That I Got Apple Watch That so I've Turned off and Some May Think Is Crazy but You Know What I Don't Need That Haptic Feedback on My Phone Going off Because I Can't Adjust the Tactic Intensity on the on the on the Success Plus Are Based on My My Finger Pressing I Can Adjust the 3D Touch Pressure but I Can't Adjust the Feedback so It's One Pressure Sensing for Preparation of Response Sorry Is One Tap Response Level for All That Is This Three Levels in the Watch and Is Only There Is None It's Either on or off on the Phone so Turned off and Is Great Because It Means Is That I Don't Hear a Thing I Do Feel It through My Wrist and Some of the Spoken Be Going off the Other Side Part of the Building Because in the Last 10 Years Every Every Phone Ring Tone You Can Imagine Pretty Much Even the Prank Ones I've Had on My Phone Side I Think There's a Part of Your Brain Is like I Was at My Phone Ringing over There Now Is Not and Now I Know It's Not Much's Phone You I Know It's Not My Phone Anymore Because I Know That If It My Phone Silent Ice Did There's an Article on Tripling and Are Shown at about Arm Silent Journey a Post onto Distortion A Few Months Ago and Is All about How I Use the Other What You Said but Anyway Okay so I Swallow Quickly Wrap up I'm Got to Much More Else to Add Our I Just Want Talk Briefly about the Force Touch Trackpad the Magic Trackpad to Which I Just Came out A Few Weeks Ago so Both of These Is a Different Design the Actual Trackpad Itself Is Sitting on for Little Our I Suppose You Call Them Are Metal after Spring Flaps of a Sort That I Got Strain Gauges on Which Is Now Really Not That Exciting a Revolutionary Interesting but They Also Perform a Partial Suspension so That the Actual Trackpad Surface Itself Is Partially Suspended above Are the Tactic Unit and What That Means Is That the Tactic Unit inside underneath the Trackpad Is Working against More Working against the Mass of the Trackpad Glass and Construction and Is the Entire Body of the MacBook Which Makes Perfect Sense Because Why Do You Want to Be Trying Vibrating As the Entire Mass of a MacBook Pro the Semi Sitting on the Desk Anyway If You Can IPhone You Hold in Your Hand If You Gotta Watch It on Your Wrist so You Have To Work against That You Have To Work against the Mass of the Body That You're Holding That You're Contained within but When You Actually on Something As Big and As Heavy in His MacBook so Mean That the MacBook Air Match Okay so the MacBook the Original MacBook Air Came out and Was the 12 Inch Show MacBook Was Released in March of This Year and Is Our Was a MacBook Pro 13 Is on the Same Date but the Actual MacBook Itself Ways Are .92 Kg Earth 920 G It's Pretty Heavy and You Need in a Proportionally Enormous Are Tactic Engine to Move the Whole Thing You Need to Move the Whole Thing Is to Be the Trackpad and Is the Doing so Are That's Why the Tactic for Arm Engines in the Touchpads Are Not in Proportionally Enormous Because If You Look at the Difference in Size between the Tactic Engine in the Watch Versus the Success They're Proportional in Size Whereas the Mac on the Desktop Are Not in a Matter Trackpad to Snow Slatted Things Heavier Psych 231 G That's 8.2 Ounces and Oh so Again It's It's the Hefty Bit of Kit You This Money Anything about the Matter Trackpad to Is Actually Arm Is Heavier Than IPhone 6s despite the Fact If You Think about It It Has a Heck of A Lot Less Than It Is Not yet When You Pocket My Duke Is Success Plus in Your Pocket Anyway Shows Men Yeah Well That's Exactly Right There in Later Fashion with Some People Love to Get It That's Okay I'm Not a Fashion Guy Connolly Often Spoken Being a Network Idolatrous Draft and I Would Exactly Sound Fashionable of Ego Than a Anyway Alright so Arm Honestly Are yet That's It Really Are I Find It Blows the Reasons Why I Think That Are the Tactic Technology Is Act Is Is an Excellent Step Forward I Think That the Reason That Apple Chose to Do It Our Yard to Save Energy I Think That the Trade-Off That They Made a Good Trade-Offs Even under Making a Product Slightly Heavier It's a Better Experience Overall Than the Farm Better Control for More Unique Form of Feedback and I Honestly Think That Those Are All Wins What's Interesting Though Is Why Similar Comments Haven't Done This and If Think about It Are the ERM Technologies Been around so Long It's Cheap It's Been Miniaturised and for Most People It's Good Enough Once You've Used the Tactic Staff Using the Linear Actuators It's Pretty Hard to Go Back Because the Extra Sensitivity Extra Control If You Get and That That the Sensation Get Out Of It I Can Totally See Why Apple Done It and It's Pretty Clear to Me That There Tactic of Moving Forward Is to Use This Everywhere and That Eventually ERM Will Be Gone and Banished from All Apples and Equipment Moving Forward so I Would Not Be Surprised to Sense the Tactic Feedback and All IPads As Well and Every Model of MacBook and MacBook Pro and You Know They Just Add to the Trackpad to Which I Know When I Started Work on His Notes a While Ago Does Provide Released It but That Was Obviously Next on the List and Now They've Done That so and Is Pretty Pretty Clear That What We Do Whether Future Life Apple Anyway so They Go We Think Our Rights Stick a Fork in It Were Done Right the Stick You Stick Forks and Things Regularly Amend Other Than to Eat Things Understand but Anyway Listening Pocket for a Cure Just in Case Okay Fantastic They Have Everybody Write Good If You like to Know More about This in You Know Portable Forks That You Take with You You Can Reach Me on Twitter at John's Edgy but about the Fork She Wanted to Reach Carmen Nardelli Does… 67, Everywhere We Talk about Books Know When I Could Plug Camping to Us How Cabling LOL Yes and You Could Follow Pragmatic Show on Twitter Specifically to Seashell Announcements and Other Related Stuff Remember That Pragmatic Is Now Part of the Engineer Network and It Also Has an Account Engineered_Net It Has Shown Announcements about the Network Specifically and All the Shows You to Get out and Engineered.Network Now Was Come and They Will Get You What the Best Way to Get in Touch with Me on Twitter Are at Thinking Equips or Are No the Engineer Network Webpage Sanderson Feedback the Shell My Pictures along the Size I Hope I Didn't Follow through on My Threat to Change Your Ploughing outside My Twitter Picture and Ask How You Are the Only RCS Obviously a Sound As Come and Learn to Be like Any Feedback about All the Networking Please Use the Feedback Form on Engineer.Network Website and We Are Dispersing I Think Manfred Once Again Response Sponsoring Engineer Network Mac Software That Many Remember Specifically the URL Many All One Word.com/Internet More Information about the Amazingly and I Finally Won Last Night in the Network Does Have a Patron Account If You like We Doing Here at the Engineer Network and like Anything at All Is Very Much Appreciated and Helped to Not Only Help You in the Works Right Now so Exciting Stuff Coming Arm There Are There As Well so 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Carmen Parisi

Carmen Parisi

Carmen is an Electrical Engineer working as an Application Engineer in analogue electronics and has a blog Fake EE Quips that he occasionally posts to. Carmen is also a co-host on The Engineering Commons podcast.

John Chidgey

John Chidgey

John is an Electrical, Instrumentation and Control Systems Engineer, programmer, podcaster and runs TechDistortion and the Engineered Network. John has produced and appeared on many podcasts as well as Pragmatic.

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