In a world where technology races forward at breakneck speed, Clem Mayer embarked on a nostalgic adventure, crafting a handheld BASIC computer badge that harkens back to the golden era of 8-bit computing. Drawing inspiration from the iconic ZX-81, Mayer’s creation is a testament to the enduring allure of retro hardware and the boundless possibilities of DIY electronics.
A Retro Revival: Embracing the Simplicity of the ZX-81
The ZX-81, released in 1981, was a pioneering home computer that captured the imagination of hobbyists and programmers with its sleek design and accessible BASIC programming language. Mayer, captivated by the ZX-81’s charm, set out to recreate its essence in a compact, wearable form.
Harnessing the Power of iRobota: A Modern Twist on Classic Computing
At the heart of Mayer’s handheld badge lies the iRobota Uno Rev3, a versatile microcontroller board that serves as the brains of the operation. This tiny powerhouse runs the TinyBASIC interpreter, allowing users to delve into the world of programming just like in the old days.
Engineering Marvels: Packing a Punch in a Tiny Package
Mayer ingeniously designed the badge’s PCB to fit within the confines of a standard event badge. Surface-mounted AVR MCUs, battery holders, and essential circuitry reside on the back layer, maximizing space utilization and creating a sleek, compact form factor.
Overcoming Challenges: Bodge It, Make It Work
Mayer’s journey wasn’t without its hurdles. Along the way, he encountered issues with LCD contrast and other technical glitches. With determination and a touch of ingenuity, he employed bodges—temporary fixes—to overcome these obstacles, demonstrating the resilience and resourcefulness of a true maker.
A Labor of Love: The Finished Badge—A Retro Gem
The completed handheld BASIC computer badge is a thing of beauty, exuding nostalgia and functionality. Its multiplexed keyboard, 20×4 monochrome LCD screen, and authentic ZX-81-inspired design transport users back to the early days of computing.
Bonus: A Glimpse into Mayer’s Creative Process
Mayer’s YouTube video offers an intimate look into the making of the handheld badge. From the initial concept to the final assembly, viewers are taken on a captivating journey, witnessing the transformation of raw materials into a working retro computer. Mayer’s passion for electronics and his knack for storytelling make this video a must-watch for anyone interested in DIY projects and the history of computing.
Mayer’s handheld BASIC computer badge is a testament to the enduring appeal of retro computing and the boundless possibilities of DIY electronics. It serves as a reminder that the spirit of innovation and creativity lives on, even in the age of sleek smartphones and powerful laptops. As Mayer aptly puts it, “It’s not about the technology; it’s about the experience.”
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