I Couldn't Afford My Dream Bench Power Supply - So I Built It

Discover Easy, Affordable & Reliable PCB Manufacturing With JLCPCB 👉 https://jlcpcb.com/?from=mellow_labs 🔧 Trusted by over 5 million engineers! 💰 New customers get $123 in coupons 💖 Support My Work: Patreon:   / mellow_labs   Mugs: http://mellowlabs.uk/ GitHub: https://github.com/FireMarshmellow/Me... 🌐 Socials: Discord:   / discord   Reddit:   / fire-marshmallow   Instagram:   / mellow_fire   Printables: https://www.printables.com/social/282... ⏱️ Chapters 00:00 Introduction and why I built it 01:22 Features overview 03:15 Opening it up / sponsor 04:47 Hardware explained 08:34 Circuit schematic walkthrough 10:10 Upgrading to Raspberry Pi Zero 2W and Elecrow screen 11:49 Getting Modbus comms working (and killing things) 18:05 Replacing modules and building the UI 20:55 Toggle switches, case design, and 3D printing 27:12 Assembly, software, and final thoughts 🏷️ Tags #diy #powersupply #raspberrypi #electronics #maker #3dprinting #raspberrypizero #modbus #xy6020l #homelab #benchtop #tkinter #python #pico #jlcpcb 🎉 Video Summary I spent two years building my own dual-channel lab bench power supply using two XY6020L modules, a Raspberry Pi Zero 2W, a Pico, and an Elecrow touchscreen, after I couldn't find a commercial unit that had the features I wanted at a price I could afford. Sponsored by JLCPCB.