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Trunk's Technical Blog

Latest GoPro HERO is actually a GoPro HERO5

Posted by Mark Kirschenbaum on

We purchased a GoPro HERO (2018) the other day and after some cursory inspection we realized this camera is actually a GoPro HERO5 with the firmware crippled. To confirm our hypothesis, we decided to trick the camera to loading the GoPro HERO5 software. It loaded properly and all the features were unlocked. Even GPS and 4K at 30fps work great! Some people were worried that we're overclocking the parts. After inspecting the device tree, we can confirm the processors and DSPs between the two...

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The little camera that almost could skydive: Sony DSC-RX0

Posted by Mark Kirschenbaum on

The Sony DSC-RX0 is an awesome little camera, but we don't feel it's the best for skydiving. Read up on our observations and settings after several test jumps with this camera. Check out some photos and videos produced from the Sony RX0 and compared with other solutions.

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GoPro HEROBus™ 2 Research

Posted by Mark Kirschenbaum on

 FOR SECURITY RESEARCH / Interoperability with our products.   The good news is the HEROBus™ is alive and well on the GoPro HERO5/6/7. The bad news is its extremely locked down and needs a BGA part and a crypto key to make it work. The needed parts are: Cypress EZ-PD CCG2 - USB type-C Controller - Accessory CYPD2122_20FNXIT 20 pin $1.79 ATMEL ATSHA204A - Authentication Chip <- Protected! ATSHA204A-XHDA-T I2C version TSSOP $0.55 The HEROBus™ i2c Slave or Vendor commands on MTP via...

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Samsung Gear Sport Teardown

Posted by Mark Kirschenbaum on

I recently picked up the Samsung Gear Sport for the possibility of skydiving with it, tracking my daily activity, and getting notifications from my iPhone. Temptation got the best of me, and around hour one, I decided to have a look what's inside.  Disassembly of SM-R600 (Samsung Gear Sport) Overall, disassembly is easy. Just remove the four, 3-wing screws located in each corner.  The bottom pops off with a gentle pry from a spudger. Obviously, be sure to clean off both mating surfaces before closing the unit...

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GoPro HERO6 Teardown

Posted by Mark Kirschenbaum on

In this article, we dive into the GoPro HERO6 (Code named Chopes) and determined as much of the architecture as possible. Mechanically Mechanically, the GoPro HERO6 is constructed the same as the GoPro HERO5. A combination of a welded and tapped face locks out the water from the Front LCD, but allows sound to permeate to the front protected Microphone. A top and front microphone exist and sound gets channeled through a membrane. On the bottom, a sealed speaker outputs feedback beeps and...

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