4.1–4.2: Add connectors (JST battery, speaker, programming header) and route 3.3 V/GND to ESP32, FM8002E, PCM5101A, W25Q64; implement I2S and SPI nets
5.1–5.2: Add USB-C CC resistors, SMBJ5.0CA, PESD5V0L2BT and wire CC, VBUS, D+/D− nets
6.1–6.2: Add pull-ups for S1 and current-limit resistors for LEDs; wire UI buttons and LEDs to ESP32
7.1–7.3: Adjust PCB outline to 96 × 55 mm, segregate power/audio zones, ensure ESP32 antenna keep-out clearance
Success criteria review
✅ 5 V boost stage parts and wiring
✅ SLM6400 + AO4407A power-path implemented
⚠️ TLV62565 decoupling & feedback network in place, but net wiring pending
⚠️ System components (ESP32, PCM5101A, FM8002E, W25Q64) integration not yet started
⚠️ USB-C and ESD/TVS protection not yet implemented
⚠️ UI buttons, LEDs, connectors not yet wired
⚠️ PCB dimensions not yet updated
Next recommended step
Proceed with net connections for the TLV62565: wire VIN to BOOST_OUT, VOUT to the 3.3 V net, GND to GND, EN to SYS, and complete the FB resistor network.
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant