Apple Pencil Teardown Reveals Antenna, Battery and Tiny Folded Logic Board

iFixit has completed an Apple Pencil teardown, removing the outer plastic casing to reveal the pencil's inner metal cylinder. The teardown provides a closer look at several Apple Pencil components, including the antenna, battery, pencil nib, Lightning connector and miniature folded logic board.

Apple-Pencil-Teardown
Apple Pencil has two emitters in the tip that enable the iPad Pro to determine the pencil nib's angle and orientation relative to the display, and adjust the pen stroke accordingly, explains iFixit. iPad Pro has a digitizer that likely determines the distance from each emitter to the screen.

At the core of the Apple Pencil is a tiny 0.329 Wh lithium-ion rechargeable battery that holds just 5% of the charge of an iPhone 6s battery, next to a small cylindrical black and gold antenna. There is also a small ribbon cable that connects the Apple Pencil's battery with its Lightning connector for charging.

On the other side of the battery is the Apple Pencil's tiny folded logic board that weighs just one gram, yet houses more than five components, including an ST Microelectronics low-power 32-bit ARM-based Cortex-M3 microcontroller and Qualcomm Bluetooth 4.1 chip from Cambridge Silicon Radio.

Apple-Pencil-Logic-Board- Red: ST Microelectronics STML151UCY6 Ultra-low-power 32-bit RISC ARM-based Cortex-M3 MCU
- Orange: ST Microelectronics AS5C Y533 (also found in the 2015 Apple TV)
- Yellow: L05286 QS4 VG Z SGP 528
- Green: EWX 01129
- Not shown: Cambridge Silicon Radio Qualcomm CSR1012A05 Bluetooth Smart IC

iFixit awarded the Apple Pencil its lowest repairability score of 1 out of 10. While the pen nib and cap can be replaced if worn out or lost, iFixit says you can't get inside the Apple Pencil without destroying the device. It says the 12-hour battery is not replaceable, giving the Apple Pencil a limited lifespan.

Related Forum: iPad Accessories

Popular Stories

iphone se 4 modified flag edges

iPhone SE 4 With Face ID Said to Be Priced Below $500

Monday May 20, 2024 3:43 am PDT by
Apple is targeting a sub-$500 starting price for its upcoming fourth-generation iPhone SE model despite a raft of rumored upgrades coming to the more affordable device. According to leaker Revegnus on X, the U.S. launch price of the fourth-generation iPhone SE will either remain at the same $429 starting price as the current model, or will see an increase of around 10%. Either way, Apple's...
iOS 17

Apple Releases iOS 17.5.1 With Fix for Reappearing Photos Bug

Monday May 20, 2024 10:11 am PDT by
Apple today released iOS 17.5.1 and iPadOS 17.5.1, minor updates to the iOS 17 and iPadOS 17 operating system updates that came out last September. The 17.5.1 updates come a week after the launch of iOS 17.5 and iPadOS 17.5. iOS 17.5.1 and iPadOS 17.5.1 can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. According to Apple's...
iPhone 16 Camera Lozenge 2 Perspective

iPhone 16 Lineup Rumored to Come in These Two New Colors

Sunday May 19, 2024 11:08 am PDT by
Apple analyst Ming-Chi Kuo today outlined his expectations for the iPhone 16 lineup's color options, revealing that two new colors should replace two of the existing shades. Kuo outlined his expectations in a post on X (formerly Twitter) earlier today. He believes that the iPhone 16 Pro and iPhone 16 Pro Max will be available in black, white or silver, gray or "Natural Titanium," and rose....
microsoft surface pro qualcomm

Microsoft Says New Surface Pro is Faster Than 15" M3 MacBook Air

Monday May 20, 2024 3:19 pm PDT by
Microsoft is going all in on AI, today introducing a series of Copilot+ PCs that have AI-focused hardware. The new Surface Pro is one of the first Copilot+ PCs, equipped with Qualcomm's Arm-based Snapdragon X Elite processor. Microsoft is already pitting the Surface Pro against Apple's M3 MacBook Air, and in marketing materials, claims that the Surface Pro has superior processing power and...
iOS 17

iOS 17.5 Bug May Also Resurface Deleted Photos on Wiped, Sold Devices [Updated]

Friday May 17, 2024 12:24 pm PDT by
A bug in iOS 17.5 is apparently causing photos that have been deleted to reappear, and the issue seems to impact even iPhones and iPads that have been erased and sold off to other people. A Reddit user wiped an iPad following Apple's guidelines in September of 2023 before selling it off to a friend. That friend updated the iPad to iPadOS 17.5 this week, and began seeing the Reddit user's old ...
iphone se 4 modified flag edges

When to Expect the Next iPhone SE to Launch

Friday May 17, 2024 2:03 pm PDT by
It has been over two years since Apple released the third-generation iPhone SE, and rumors continue to surface about a new model. The latest word comes from The Information, which today reported that Apple plans to release a new iPhone SE with a design similar to the standard iPhone 14 in the spring of 2025. If this rumor is accurate, the iPhone SE would finally gain Face ID and a notch...

Top Rated Comments

Fzang Avatar
111 months ago
I think iFixit repairability scores have served their time. It's time to stop this. You can't continue to make things smaller, more compact and more advanced, and still lay it out so the average Joe can replace every part with a screwdriver and some elbow grease.
Score: 47 Votes (Like | Disagree)
akfgpuppet Avatar
111 months ago
I don't know what else they expected.
Score: 32 Votes (Like | Disagree)
Chuck Kostalnick Avatar
111 months ago
Ironically, they gave a traditional pencil 2/10, as it's compatible with most standard staplers.
Score: 14 Votes (Like | Disagree)
2457282 Avatar
111 months ago
I enjoy the iFixit teardowns for one reason -- I am a techie and love to see the innards of things. The reality is that 99% of all consumers of any technology do not have the skills or time to fix things and will either pay someone else to do so or will simply replace it. I am always amazed by this fact. I love to tinker and will fix anything in my house or even with electronics. But all my friends call a plumber, electrician, or other handyman to get things done. Same here, it is more important to make things work well and last as much as possible, not to make them repairable by a consumer, because they won't. Many on this site are the tinkerers, but please remember that in this case we are the 1%ers not the commoners.
Score: 14 Votes (Like | Disagree)
macintologist Avatar
111 months ago
If it was highly serviceable it would probably be a crappy design. If you're going to use the thing, use it.
Score: 12 Votes (Like | Disagree)
longofest Avatar
111 months ago
My pencil broke, but I was able to put it into a sharpener, but you can only do that limited times. I wonder if Apple is going to provide a sharpener?
Score: 11 Votes (Like | Disagree)