
MacroFab Engineering Podcast #238
Better Encryption than Zoom, Firmware Stacks with AND!XOR
Related Topics
We Have Clearance, Clarence
On this episode, there are some AND!XOR hints for DC29 and we discuss the difference between PCB DRC specifications for clearance and creepage.
Fourth Annual MacroFab Star Wars Christmas Special
Josh Rozier and Hyr0n join Parker and Stephen to talk about the latest Star Wars lore, technology, and media! Star Wars HeathKits and The Mandalorian.
Not Even My Final Form: Jeff Garoon on Industrial Design
Jeff Garoon joins Parker and Stephen to discuss the design, testing, and regulations of creating low volume Industrial IoT devices.
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August 19, 2020, Episode #238
- Previous podcast episodes:
- Incognito Mode which was episode number 69
- Arduino, The Gateway Drug To #BadgeLife which was episode number 109
- Espress-ify? Designing Products Around the ESP-32 Platform which was episode number 144
- Feel the Hum which was episode number 183
- Firmware
- RTOS vs No OS (i.e. Arduino or pure SDK usage)
- What about a Bootloader?
- Zephyr RTOS
- DTS
- Config
- Drivers
- Whats good about Zephry / What SUCKS about Zephry
- Drivers
- Middle Ware
- GUI
- App Layer
- The Cloud
- Flags and CTF
- Patching firmware in the wild
About the Hosts

Parker Dillmann
Parker is an Electrical Engineer with backgrounds in Embedded System Design and Digital Signal Processing. He got his start in 2005 by hacking Nintendo consoles into portable gaming units. The following year he designed and produced an Atari 2600 video mod to allow the Atari to display a crisp, RF fuzz free picture on newer TVs. Over a thousand Atari video mods where produced by Parker from 2006 to 2011 and the mod is still made by other enthusiasts in the Atari community.
In 2006, Parker enrolled at The University of Texas at Austin as a Petroleum Engineer. After realizing electronics was his passion he switched majors in 2007 to Electrical and Computer Engineering. Following his previous background in making the Atari 2600 video mod, Parker decided to take more board layout classes and circuit design classes. Other areas of study include robotics, microcontroller theory and design, FPGA development with VHDL and Verilog, and image and signal processing with DSPs. In 2010, Parker won a Ti sponsored Launchpad programming and design contest that was held by the IEEE CS chapter at the University. Parker graduated with a BS in Electrical and Computer Engineering in the Spring of 2012.
In the Summer of 2012, Parker was hired on as an Electrical Engineer at Dynamic Perception to design and prototype new electronic products. Here, Parker learned about full product development cycles and honed his board layout skills. Seeing the difficulties in managing operations and FCC/CE compliance testing, Parker thought there had to be a better way for small electronic companies to get their product out in customer's hands.
Parker also runs the blog, longhornengineer.com, where he posts his personal projects, technical guides, and appnotes about board layout design and components.

Stephen Kraig
Stephen Kraig began his electronics career by building musical oriented circuits in 2003. Stephen is an avid guitar player and, in his down time, manufactures audio electronics including guitar amplifiers, pedals, and pro audio gear. Stephen graduated with a BS in Electrical Engineering from Texas A&M University.
Special thanks to whixr over at Tymkrs for the intro and outro!
Related Podcasts

Sidecreeping Gyrations
Parker explains the DOOM SAO and Stephen implements a Gyrator for the MacroAmp!

Arduino, The Gateway Drug To #BadgeLife
AND!XOR comes to Texas to talk about #Badgelife, the craziness of DEFCON, and their new badge design.

We Have Clearance, Clarence
On this episode, there are some AND!XOR hints for DC29 and we discuss the difference between PCB DRC specifications for clearance and creepage.

Not Even My Final Form: Jeff Garoon on Industrial Design
Jeff Garoon joins Parker and Stephen to discuss the design, testing, and regulations of creating low volume Industrial IoT devices.

Espress-ify? Designing Products Around the ESP-32 Platform.
Zapp and Hyr0n of AND!XOR join Cr4bf04m and Bl1tz to talk about Badge Engineering and the Espressif ESP-32.

Fourth Annual MacroFab Star Wars Christmas Special
Josh Rozier and Hyr0n join Parker and Stephen to talk about the latest Star Wars lore, technology, and media! Star Wars HeathKits and The Mandalorian.