https://blraaz.me/
blraaz.me
Miscellaneous shenanigans involving hardware and software
2023-12-02T21:36:38-06:00
Tristan Seifert
https://blraaz.me/
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© 2023 Tristan Seifert
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Blast Processing Retrospectives
2023-07-15T19:29:40-05:00
https://blraaz.me/software/mega-drive/2023/07/15/blast-processing-retrospective.html
Tristan Seifert
The Sega Mega Drive/Genesis is what started it all for me over a decade ago: itwas my journey into reverse engineering and bare metal programming.
Demystifying CryptoKit Signatures
2022-11-03T19:12:19-05:00
2023-12-02T21:35:54-06:00
https://blraaz.me/software/ios/2022/11/03/demystifying-cryptokit-signatures.html
Tristan Seifert
Apple’s CryptoKitframework provides an easy-to-use interface to common cryptographic operations,including working with Secure Enclave keys. Signing data is easy enough, butturns out verifying signatures on the other side of the walled garden is easiersaid than done.
The Dollar Store Pax iOS App
2022-10-24T18:20:37-05:00
2022-10-24T18:25:56-05:00
https://blraaz.me/software/ios/2022/10/24/discount-pax-app.html
Tristan Seifert
With the official Pax app no longer downloadable from the App Store, I needed a new way to control my devices that’s a little more polished than the previous proof-of-concept Mac app I wrote. As it’s been a while since I last touched iOS development, I figured it’d be a fun challenge to write an app in a weekend.
Cooking PCBs
2022-09-30T23:12:12-05:00
2022-10-23T21:02:21-05:00
https://blraaz.me/hardware/2022/09/30/cooking-pcbs.html
Tristan Seifert
A recent project required some QFN packaged components – not exactly easy to hand solder. Without a reflow oven at hand, I had to get a little bit creative.
Embedded Linux Adventures on STM32MP1
2022-07-19T20:07:40-05:00
https://blraaz.me/software/embedded/2022/07/19/embedded-linux-adventures.html
Tristan Seifert
With mostly functional hardware in hand, it was time to give the programmable load software some attention. And thus begins my journey into building an embedded Linux distribution.
Overengineering or Making Do? You Decide!
2022-06-24T02:12:40-05:00
https://blraaz.me/hardware/embedded/2022/06/24/programmable-load-overengineering-or-making-do.html
Tristan Seifert
Faced with the prospect of another board revision and parts that became unobtanium, it was time to go back to the drawing board and figure out a way to use more readily available parts, while making the hardware more powerful and polished.
Programmable Load Updates
2022-05-14T14:48:37-05:00
https://blraaz.me/hardware/2022/05/14/programmable-load-updates.html
Tristan Seifert
After a much-needed vacation, I’m back to working on my programmable load. Time to remember what parts worked and which didn’t for the inevitable ∞th revision.
Baby's First Programmable Load
2022-04-13T18:20:37-05:00
https://blraaz.me/hardware/2022/04/13/programmable-load-intro.html
Tristan Seifert
After trying to burn my place down one time too many, it’s time to retire my pile of power resistors for testing power supplies in favour of a fancy digital programmable load. Except obviously, I’m going to build it myself, and overengineer it to hell and back.
Task Failed Successfully
2022-01-08T23:20:37-06:00
https://blraaz.me/hardware/2022/01/08/task-failed-successfully.html
Tristan Seifert
With the first revision of the 68komputer boards and the required parts finally in hand, I spent the holidays (inside, in the warmth) assembling one. While it didn’t completely work, it also wasn’t a complete exercise in futility and a waste of time.
It's not dead… somehow
2021-12-21T21:23:37-06:00
https://blraaz.me/hardware/2021/12/21/68komputer-revived.html
Tristan Seifert
Despite what the general silence on this topic might imply, quite a few things have changed in the land of 68komputer since the last time I wrote about it. For one, there’s completely new hardware based around a 68000 with a full 16-bit data path. And, a boot ROM and firmware that’s a bit more… inviting.