Artenz on Ask Hackaday: Why Do Self Driving Cars Keep Causing Traffic Jams?.WurstCase on Arctos Robotics: Build A Robot Arm Out Of 3D Printer Spares?.James on VHS-Decode Project Could Help Archival Efforts.Sampson on Specifications You Should Read: The NASA Workmanship Standards Hobbes on NASA’s Voyager Space Probe’s Reserve Power, And The Intricacies Of RTG-Based Power Systems.juergenUK on Op-Amp Challenge: Compare Op-Amps, By Listening To Them.Foldi-One on Ask Hackaday: Why Do Self Driving Cars Keep Causing Traffic Jams?.C on Ask Hackaday: Why Do Self Driving Cars Keep Causing Traffic Jams?.daveboltman on Hackaday Prize 2023: The Realities Of The Homework Machine.None on Leaked Internal Google Document Claims Open Source AI Will Outcompete Google And OpenAI.This Week In Security: Oracle Opera, Passkeys, And AirTag RFC 9 Comments It’s a fantastic project, with the entire build video available below. The end result is a direct, drop-in replacement for the original Discman battery with a higher capacity, that’s also rechargeable via USB. The originally battery had two contacts on the end that fit the Discman exactly these were replicated with a small PCB wired up to the guts of the USB powerbank. The only tripping points for this build were the battery contacts. This enclosure was then stuffed with a small lithium cell scavenged from a USB power bank. After carefully measuring the dimensions of this battery, it was replicated in plastic with a 3D printer. The Discman is working with uses a custom, Sony-branded battery based on NiMH technology with a capacity of around 500 mAH. What if someone were to create a new battery pack for an old Sony Discman using lithium cells? That’s exactly what did for their entry into this year’s Hackaday Prize.
The new hotness in battery technology is lithium - it offers greater power density, lighter weight, and a multitude of ready-to-go, off the shelf cells. These batteries were nickel metal hydride batteries (because of the technology of the time) and are now well past their service life. Some of the first Sony Discmans included rechargeable batteries.
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