We dive into the intricate world of vintage computing with James Lewis, aka the Bald Engineer, who takes us through the journey of constructing a functional computer based on the Apple II GS's Mega II chip. He shares his nostalgic connection to the Apple II series, revered for its open design and pioneering hardware engineering. Our conversation spans the detailed architecture and challenges of his Mega IIe project, from initial concepts to the complexities of integrating modern microcontrollers like the RP2040 during pandemic component shortages. Tune in for a fascinating journey from the past to the future, bridging vintage computing with modern technology!  
 

EP#420: The Mega IIe: A Vintage Computing Adventure with James Lewis

Dive into the electrifying world of electrical engineering with Circuit Break, a MacroFab podcast hosted by Parker Dillmann and Stephen Kraig. This dynamic duo, armed with practical experience and a palpable passion for tech, explores the latest innovations, industry news, and practical challenges in the field. From DIY project hurdles to deep dives with industry experts, Parker and Stephen's real-world insights provide an engaging learning experience that bridges theory and practice for engineers at any stage of their career.

Whether you're a student eager to grasp what the job market seeks, or an engineer keen to stay ahead in the fast-paced tech world, Circuit Break is your go-to. The hosts, alongside a vibrant community of engineers, makers, and leaders, dissect product evolutions, demystify the journey of tech from lab to market, and reverse engineer the processes behind groundbreaking advancements. Their candid discussions not only enlighten but also inspire listeners to explore the limitless possibilities within electrical engineering.

Presented by MacroFab, a leader in electronics manufacturing services, Circuit Break connects listeners directly to the forefront of PCB design, assembly, and innovation. MacroFab's platform exemplifies the seamless integration of design and manufacturing, catering to a broad audience from hobbyists to professionals.

About the hosts: Parker, an expert in Embedded System Design and DSP, and Stephen, an aficionado of audio electronics and brewing tech, bring a wealth of knowledge and a unique perspective to the show. Their backgrounds in engineering and hands-on projects make each episode a blend of expertise, enthusiasm, and practical advice.

Join the conversation and community at our online engineering forum, where we delve deeper into each episode's content, gather your feedback, and explore the topics you're curious about. Subscribe to Circuit Break on your favorite podcast platform and become part of our journey through the fascinating world of electrical engineering.

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This week we delve into the major (Isn't there always one?) lawsuit against Apple for monopolizing the smartphone market. We explore the implications of Apple’s business practices on innovation, consumer choice, and market competition. The discussion also covers the ethical concerns around Apple's ecosystem exclusivity and how it affects users' perceptions of non-Apple products. Discussion Highlights: Overview of the Justice Department's lawsuit against Apple for monopolizing smartphone markets, focusing on exclusionary practices that hinder competition.Examination of how Apple's ecosystem locks in users, making it difficult to switch to competitor products like Android.Discussion on the ethical considerations of business practices that degrade competitor's product functionality.Reflections on personal and societal impacts of technology choices, including the social implications of being labeled by the type of device one uses.Relevant Links:Justice Department Sues Apple: https://www.justice.gov/opa/pr/justice-department-sues-apple-monopolizing-smartphone-marketsC-NET Article on Apple Lawsuit: https://www.cnet.com/tech/mobile/the-us-lawsuit-against-apple-raises-questions-about-iphone-and-androids-future/YouTube - Merrick B. Garland Press Conference: https://www.youtube.com/watch?v=EQk-EhuQdLg&t;=278s&ab;_channel=C-SPANCommunity Questions:How do Apple’s business practices affect your choice of technology and perception of non-Apple products?Do you think Apple’s ecosystem exclusivity is just good business, or does it cross ethical boundaries?Have you experienced or noticed any social implications based on the type of mobile device you or others use?MacroFab:

 This show is brought to you by MacroFab, which provides a platform for electronics manufacturing services (EMS), hardware development, designing and prototyping for individuals, startups, and businesses. Key MacroFab services include PCB (Printed Circuit Board) fabrication, assembly, and testing. Customers can use MacroFab's platform to upload their PCB designs, select components, and specify manufacturing requirements. 
 We Want to Hear From You!

 Subscribe to Circuit Break wherever you get your podcasts! And join our online Discourse discussion hub at forum.macrofab.com to keep the conversation going with electrical engineering experts and experimenters! You can also email us at podcast@macrofab.com.

EP#429: The Magic Touch Is Money

This week we dive into the fascinating world of vintage tech repair, focusing on efforts to preserve General Motors' futuristic '80s digital displays. Hosts Parker Dillmann and Stephen Kraig discuss the resilience and repair techniques of the Visual Information Center (VIC) screens, introduced in the late '80s. They also highlight MacroFab's new inventory management features that streamline the process for electronic components, ensuring efficient project management and system updates. Discussion Highlights: Launch of MacroFab's enhanced inventory management system, improving component tracking and project management.The survival and repair techniques of GM's '80s digital displays, highlighting the challenges and techniques involved in maintaining legacy technology.Discussion on designing long-lasting electronic components and the importance of planning for product lifecycle and reliability.Exploring the impact of technology on product longevity and the potential of modern tools to extend the life of electronic devices.Relevant links:MacroFab Inventory Management Update: https://www.macrofab.com/blog/inventory-features-streamline-management/Article on GM’s Futuristic '80s Digital Displays: https://www.theautopian.com/gms-futuristic-80s-digital-displays-are-dying-but-this-man-is-fighting-to-keep-them-alive/Community Questions:How do you approach maintaining or repairing older technological devices to extend their lifespan?What are your thoughts on balancing modern design with the need for longevity in electronics?Have you worked on any projects that involve updating or maintaining older technology? Share your experiences!MacroFab: This show is brought to you by MacroFab, which provides a platform for electronics manufacturing services (EMS), hardware development, designing and prototyping for individuals, startups, and businesses. Key MacroFab services include PCB (Printed Circuit Board) fabrication, assembly, and testing. Customers can use MacroFab's platform to upload their PCB designs, select components, and specify manufacturing requirements. 
 We Want to Hear From You! Subscribe to Circuit Break wherever you get your podcasts! And join our online Discourse discussion hub at forum.macrofab.com to keep the conversation going with electrical engineering experts and experimenters! You can also email us at podcast@macrofab.com.

EP#428: Repairing the Retro Future

In this episode of Circuit Break, we wrap up the Food Device Design Derby. We celebrate the innovation and creativity of contest entries like the JavAqua, Pizza Pouch, and the winner, BarBuddy, a personal robotic bartender. Notable discussions include a look at podcast statistics, with an impressive 86% of listeners tuning in for entire episodes. We also introduced a new email notification system for podcast releases, moving from Tuesday to Friday releases, and encouraged listeners to engage with reviews. There is also a brief discussion about if PCB assembly drawings are still relevant. Discussion Highlights:Introduction of "Breakers" as a nickname for the podcast listeners.Discussion of the podcast's high listener engagement stats.Introduction of an email notification system for new podcast episodes.Results and highlights from the Food Device Design DerbyThird place: Pizza PouchSecond place: JavAquaFirst place: BarBuddyCircuit Break Favorite: h0t_d0gThe importance and challenges of creating accurate assembly and fabrication drawings for PCBs and PCAs.Discussion on potential improvements in EDA tools for automating assembly and fabrication drawings.Relevant Links:h0t_d0g Contest Page: https://circuit-break.macrofab.com/t/food-device-challenge-h0t-d0g/218JavAqua Contest Page: https://circuit-break.macrofab.com/t/food-device-design-derby-challenge-javaqua/225Pizza Pouch Contest Page: https://circuit-break.macrofab.com/t/food-device-challenge-pizza-pouch-the-keeper-for-your-to-go-pizza/224BarBuddy Contest Page: https://circuit-break.macrofab.com/t/food-device-challenge-barbuddy/216PocketFryer Contest Page: https://circuit-break.macrofab.com/t/fdd-challenge-pocketfryer/196Community Questions:What new innovations or devices would you like to see in future contests?Have you ever had a DIY project that you turned into a functional everyday tool? Tell us about it!What are your thoughts on the need for more automation in EDA tools for producing assembly and fabrication drawings?

EP#427: Food Device Design Derby: Wrap up and Results

Today, we're tackling a topic that's a gold mine for any designer: crucial features you might not have considered for your prototype. From debug headers to "Swapperoo" resistors and heartbeat indicator LEDs, we're covering it all. Tune in as we share insights, anecdotes, and maybe a few confessions from our own prototyping adventures. Plus, we dive into the importance of making your prototype testing-friendly and discuss a poll that could solve a common UART connection dilemma. This is episode 426 – your prototype's new best friend! 
 Discussion Highlights: Debug Headers: Taking inspiration from James Lewis’s Apple Mega 2 project, we discuss the importance of embedding debug headers directly onto the PCB. We also highlight the Tag Connect's footprint as a space-saving, connector-free debugging interface. Test Pads for Production Testing: Crucial for measuring signals ensuring that potential circuit issues are not overlooked. This measure is crucial for validating the prototype’s performance. Jumper Headers in Series on Power Rails: This method allows for the quick disconnection of subsystems for individual testing, enhancing the diagnostic process without the need for circuit alterations.Easy ways to hook up test equipment: By integrating connectors and test points specifically designed for easy attachment of debugging and testing tools, such as multimeters or oscilloscopes, engineers can streamline the troubleshooting process. Signal Integrity Testing Points: To monitor and adjust signal quality proactively, supporting the prototype’s overall integrity.Thermal Management: Managing component temperatures is a critical aspect often overlooked in the early stages of prototyping. The discussion includes practical strategies for thermal management, even in challenging environments like aerospace.Prioritizing Function Over Form: Make the prototype whatever shape it needs to be to be accessible for testing and debugging, even if it means starting with a larger form factor.Early Inclusion of Fiducials and Mounting Holes: The significance of adding fiducials and mechanical mounting holes at the onset of the design process aids in component placement, assembly, and effective heat dissipation.Adding Pass-Through Holes: For unforeseen modifications or component additions post-design, showcasing the flexibility this can provide to a prototype.Poll Discussion: When connecting two chips, each with their own TX and RX lines, should TX be connected to TX, or does TX connect to RX? Relevant links:EP#420: The Mega IIe: A Vintage Computing Adventure with James LewisMacroFab: This show is brought to you by MacroFab, which provides a platform for electronics manufacturing services (EMS), hardware development, designing and prototyping for individuals, startups, and businesses. Key MacroFab services include PCB (Printed Circuit Board) fabrication, assembly, and testing. Customers can use MacroFab's platform to upload their PCB designs, select components, and specify manufacturing requirements. 
 We Want to Hear From You! Subscribe to Circuit Break wherever you get your podcasts! And join our online Discourse discussion hub at forum.macrofab.com to keep the conversation going with electrical engineering experts and experimenters! You can also email us at podcast@macrofab.com.

EP#426: Top Features to Add to Your Next Prototype

This week, hosts Parker Dillmann and Stephen Craig are joined by Kyle McLeod, the OE Project Manager, and Nicholas Lundgard, the OE Team Lead at MacroFab. They delve into recent software releases enhancing the ordering experience on the MacroFab platform, including ITAR compliance, improvements in design file uploads, and the introduction of customer-furnished material options. They discuss the importance of seamless user interactions for uploading PCBs, placing orders, and how MacroFab's platform facilitates these processes. The episode provides insights into MacroFab's efforts to make PCB manufacturing more accessible and efficient for their customers. Discussion Highlights:Introduction of ITAR compliance and its significance for MacroFab's platform and users.Enhancements in PCB design file uploads, including support for additional file types and improved user interface.The role and benefits of customer-furnished material options in the ordering process.Discussions on intelligent overage logic for parts ordering and the impact on manufacturing efficiency.The introduction of completed board photo updates for quality assurance and customer verification.Preview of upcoming features and improvements, focusing on user interface enhancements, bomb management tools, and expanded quoting capabilities.Relevant Links:MacroFab Platform UpdateCommunity Questions:Have you used MacroFab's platform for your PCB manufacturing needs? Share your experiences and any features you'd love to see in the future.What challenges have you faced in PCB design and ordering, and how do you think platforms like MacroFab can solve them?How important is ITAR compliance for your projects, and what has been your experience dealing with ITAR-compliant manufacturers?What features would you like to see added to the MacroFab platform to improve your experience?About MacroFab: This show is brought to you by MacroFab, which provides a platform for electronics manufacturing services (EMS), hardware development, designing and prototyping for individuals, startups, and businesses. Key MacroFab services include PCB (Printed Circuit Board) fabrication, assembly, and testing. Customers can use MacroFab's platform to upload their PCB designs, select components, and specify manufacturing requirements.  
 We Want to Hear From You!  Subscribe to Circuit Break wherever you get your podcasts! And join our online Discourse discussion hub at forum.macrofab.com to keep the conversation going with electrical engineering experts and experimenters! You can also email us at podcast@macrofab.com.

EP#420: The Mega IIe: A Vintage Computing Adventure with James Lewis

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