By
@Kaorii
A miniature MP3 player that fits in your palm but doesn't cut corners. Download your favorite tracks straight to the device, pair it over Bluetooth to any headphones or speaker, and carry your entire library without the bulk of your phone. No ads, no notifications, no distractions — just music, wherever you go.
Quick session finishing up the PCB layout wiring.
Fixed a routed trace that was cutting straight through the ESP32-S3’s antenna keepout area — would’ve wrecked WiFi/BT range if left in
Repositioned SW1 (boot/flash button) away from the OLED header — it was sitting close enough that the actual 44x36.5mm OLED module body would’ve physically overlapped it
Cleared remaining DRC violations (via clearance issue near the EN net, drill size on U2’s thermal pad)
Board is now fully routed with 0 errors on DRC
Next: case design in Fusion 360 now that component placement is locked in.
Spent the session designing the full schematic and starting PCB layout for Poket, a Bluetooth MP3 player built around an ESP32-S3.
Wired up the ESP32-S3-WROOM-1 core: power decoupling, EN reset circuit, boot mode button, USB-C with proper D+/D- pairing and CC pull-downs
Built the TP4056 Li-ion charging circuit (battery connector, PROG/TEMP/CE configuration)
Wired the SSD1351 OLED display and microSD card over a shared SPI bus
Added 6 physical buttons: boot, play/pause, skip+/-, vol+/-
Assigned footprints to every component and ran ERC — caught and fixed a real bug (two buttons sharing one GPIO, USB D+/D- pins not tied across both connector orientations)
Started PCB layout and ran Freerouting — caught a trace routed straight through the ESP32’s antenna keepout area, needs a proper keepout zone before re-routing
Next: fix the antenna keepout, finish routing, run DRC clean.
