terratronix / EcoCore Refboard

Loaded

0

0

Files

Schematic

PCB

Log InSign Up

Replacement Options for U1

flux

3:26

Determining replacement mode.

Finding pin-compatible ESP32 modules.

Utilizing the datasheet tool.

Clarifying replacement requirements.

Accessing knowledge base.

Reviewing the bill of materials.

Searching for components.

Searching.

Searching.

Searching.

Finished searching for components.

Looking for "module dimensions and footprint" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "pin definitions table" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "module dimensions mechanical drawing footprint land pattern" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "pin definitions table pin layout" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "footprint compatible with ESP32-WROOM-32D or ESP32-WROOM-32U" in esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf

Looking for "module dimensions and footprint land pattern" in esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf

Looking for "antenna keepout PCB design recommendations" in esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf

Crafting queries for replacements.

Here are safe, drop‑in replacements for U1 (ESP32‑WROOM‑32D). Per the ESP32‑WROOM‑32E/32UE datasheet: “ESP32‑WROOM‑32E / ESP32‑WROOM‑32UE modules use ‘Type 3’ footprints and can be replaced with ESP32‑WROOM‑D / ESP32‑WROOM‑U modules.” This confirms footprint/pin compatibility.
Replacement options for U1

Table

PartAntennaDrop‑in with ESP32‑WROOM‑32D?NotesDatasheet
ESP32‑WROOM‑32EOn‑module PCB traceYes (Type 3 footprint)Direct internal‑antenna successor to 32D; no schematic or footprint change needed.PDF
ESP32‑WROOM‑32UE‑N16External (u.FL)Yes (Type 3 footprint)For external/chip antenna designs; keep external antenna and keep‑out in mind.PDF
ESP32‑WROOM‑32UE‑N8External (u.FL)Yes (Type 3 footprint)Same as above with different flash variant.PDF
ESP32‑S3‑WROOM‑1‑N16R8On‑module PCB traceNoNewer MCU family; requires schematic and footprint changes.PDF
Notes
  • Compatibility source: ESP32‑WROOM‑32E/32UE datasheet states they can replace ESP32‑WROOM‑32D/32U on “Type 3” footprints.
  • If you want external antenna performance, choose a 32UE option; otherwise, 32E is the simplest drop‑in.
Which direction do you prefer: internal antenna (ESP32‑WROOM‑32E) or external antenna (ESP32‑WROOM‑32UE‑N16)?
Choose internal antenna
Switch to external antenna
Check current footprint
Confirm flash size
Ask about BOM sourcing
126 days
​
Sign up to send

To get started, talk to Flux or create a New Document.

Reviews

Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    No assets added.

    EcoCore Refboard

    EcoCore Refboard thumbnail
    EcoCore ESP32 Reference Board – Final Net Mapping, Protection Ratings, 4-Layer PCB Prep, and Integrated USB-C Programming Interface with USB-UART Bridge, CC Pull-Downs, Low-Capacitance ESD Protection, and Isolated USB 5V / 5V Actuator / 12V Rails (with Verified DRC/ERC Status and Pre-Production Layout Checklist)

    Properties

    Diagram
    


  
    
  
  
    
  


















"ESP32 MCU Domain"
"Power/Protection Domain"
"Relay Control Domain"
"PWM I/O Headers"
"DHT22 Connectors"
"I2C Expansion Header"
"Programming/Test Pad Domain"
"Status LED Domain"
"USB Interface Domain"

    12V = 3 mm, 5V = 1 mm, 3V3 = 0.8 mm

    1

    mm

    Near ESP32, away from relay/12V zone

    EN, IO0, PWM1, PWM2, CC1, CC2, DHT1_DATA, DHT2_DATA

    Contains U1, J8, U5, J6, J7, D7, R15, R16, USB test points TP_DP/TP_DN/TP_CC1/TP_CC2, TP_3V3, TP_5V, TP_GND, D4–D6, and associated passives

    0.8

    mm

    40.0 mm × 25.0 mm

    TX0, RX0

    Clear outlines and labels for USB-C receptacle, CC, D+/D– test pads

    Four non-plated 3.0 mm holes (TP_DP, TP_DN, TP_CC1, TP_CC2 groups) used as combined mounting and USB probe access

    Standard 4 Layer: Top (signal), Layer 2 (ground plane), Layer 3 (power pours), Bottom (signal)

    USB-C and BOOT/RESET header near ESP32, keep clearance from relay/12V zone; use existing 3.0 mm non-plated holes (TP_DP/TP_DN/TP_CC1/TP_CC2) as mechanical and probe access features

    Four non-plated 3.0 mm holes (TP_DP, TP_DN, TP_CC1, TP_CC2) used as mechanical mounting and USB probe access features

    Contains F1, D1–D3, D8–D9, U2, U3, U4, J1–J3, J4–J5, TP_12V, bulk/decoupling capacitors C1–C4, and relay status LEDs and resistors

    D+, D-

    3

    mm

    GND

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $10.19–$16.66

    Digi-Key

    $16.84–$22.68

    LCSC

    $16.03–$18.90

    Mouser

    $20.98–$21.86

    TME

    $3.94

    Verical

    $9.86–$94.37

    Controls

    Welcome 👋

    Flux helps you build PCBs faster with an AI teammate!

    Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.

        Introducing AI Placement!
        AI Placement Demo

        AI-Powered Component Placement

        Let AI place your components intelligently. AI Placement analyzes your schematic and positions components for optimal routing, signal integrity, and board density.

        From Schematic to Layout in Seconds

        Skip the tedious manual placement. AI Placement generates a starting layout you can refine, saving hours of repetitive work on every new design.

        Works With Auto-Layout

        Pair AI Placement with Auto-Layout for a complete AI-driven PCB design flow — from component placement through trace routing, all with one click.

        Try it