ESP32 DevKit USB-C Schematic Update

flux

0:00

Autopilot
Work completed
  • Project description updated to reflect Micro-USB → USB-C migration, CP2102N bridge, CC pull-downs, ESD protection, auto-program circuitry, existing 3.3 V LDO, BOOT/RESET buttons
  • System architecture flowchart created and saved under the “System Architecture” property
  • Legacy Micro-USB connector [J11] removed
  • Mid-mount USB Type-C receptacle added to the schematic
Remaining work
  • Add and configure two 5.1 kΩ CC pull-down resistors
  • Add four low-capacitance bidirectional ESD diodes on D+/D− and CC1/CC2
  • Place CP2102N USB-UART bridge and wire D+/D−, VBUS (to bridge and 5 V rail)
  • Implement two-transistor auto-program/reset network (DTR→EN, RTS→IO0) and verify BOOT/RESET button connections
  • Route VBUS to the 5 V rail and to U8 VIN; add decoupling capacitors on VBUS, CP2102N VBUS and 3.3 V pins
  • Final schematic review: remove stray nets, verify all USB-C components and protections, check decoupling values and footprints
Success criteria
None of the success criteria are yet met; core USB-C connector replacement is in place, but CC termination, ESD protection, bridge integration, auto-program network, power routing, and decoupling still need implementation.
Next step
Step 3: add and connect the CC termination resistors and ESD protection diodes for the USB-C interface.
13 days
michael79

michael79

Add a 5v connection to ESP
9 days

flux

1:36

General
Chat History
Project
Knowledge Base
Plan

Considering terminal connections.

Examining designators and connections.

Planning actions for connections.

Clarifying action requirements.

Using Knowledge Base Tool.

Clarifying 5V connection implementation.

I’ll add a dedicated 5V rail to your schematic and expose it on a new terminal.
  • Steps: add a 5V terminal, create/connect the 5V net, tie it to USB‑C VBUS and to the LDO input, and ensure no 5V reaches ESP32 GPIOs. We can also alias VIN to 5V if you want.
Before I run it, please confirm:
  1. Should 5V and VIN be the same net (aliased), or kept separate?
  2. Do you want 5V tied directly to USB‑C VBUS, or behind any power‑path element (fuse/switch/diode)?
9 days

Ready to start.

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D27
D15
D14
D34
TX2
D2
D5
GND
D18
D12
RX2
D25
RX0
D32
D21
D22
D23
VN
D4
VP
D35
D33
TX0
D26
D19
D13
EN
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ESP32-DEVKIT-V1

ESP32-DEVKIT-V1
Description

Created
Last updated by jharwinbarrozo
Forked from
vasyl/esp32-devkit-v1
1 Contributor(s)
jharwinbarrozo

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Properties

Part Type
Integrated Circuit
Manufacturer Part Number
ESP32-DEVKIT-V1
Designator Prefix
U
Symbol Style
Parametric

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