IoTCrazy ESP32-WROOM-32U with 3dBi Antenna, USB-C
- ESP32-WROOM-32U with a detachable 3 dBi antenna for longer range
- Dual-core up to 240 MHz with 520 KB SRAM, Wi-Fi and Bluetooth
- USB Type-C with a CP210x bridge; driver install required
All prices in CAD. GST/HST/PST is added at checkout based on your province.
At a glance
| SKU | IOT-011-001 |
|---|---|
| Category | ESP32 |
| Unit price | $18.99 |
| Availability | 187 in stock |
| Shipping | Calculated at checkout |
| Ships from | Calgary, AB, Canada |
| Warranty | 1 year, repair or replacement |
About this product
Overview
The IoTCrazy ESP32-WROOM-32U is the long-range member of the ESP32 family. Instead of a PCB trace antenna it carries a detachable 3 dBi external antenna, which measurably improves both Wi-Fi stability and BLE beacon detection compared with standard on-board antenna modules.
Underneath is the same dependable dual-core ESP32 with 520 KB of SRAM, combining Wi-Fi and Bluetooth in one module — a natural fit for smart devices, home automation and IoT builds. Customers have paired this board with ESPresense and Home Assistant for indoor positioning and device tracking, where the external antenna makes a real difference.
Each board arrives in anti-static packaging with foam protection, so pins arrive straight, and the headers are properly soldered for long-term reliability.
Before You Start
Driver requirement: this board uses a Silicon Labs CP210x USB-to-UART bridge, so you need the official CP210x driver before your computer will see it.
- Windows — Download and install the CP210x driver package
- macOS — Download and install the CP210x VCP driver package
- Linux — Most distributions already include CP210x support; just keep your kernel modules up to date
Once the driver is in place you can upload code from the Arduino IDE or ESP-IDF over a standard data-capable USB Type-C cable. Our ESP32 setup guide walks through the whole process.
Key Features
- Extended wireless range — Detachable 3 dBi external antenna for stronger Wi-Fi and BLE links
- Dual-core MCU — ESP32-WROOM-32U with 520 KB SRAM for comfortable multitasking
- Arduino IDE ready — Fully compatible with the Arduino IDE and ESP-IDF
- Cross-platform drivers — Silicon Labs CP210x drivers available for Windows, macOS and Linux
- Built to last — Anti-static packaging with foam protection and clean, durable soldering
Specifications
| Brand | IoTCrazy |
|---|---|
| Module | ESP32-WROOM-32U (Espressif ESP32) |
| Processor | Xtensa 32-bit LX6, dual-core |
| Clock speed | Up to 240 MHz |
| SRAM | 520 KB |
| Wireless | 2.4 GHz Wi-Fi 802.11 b/g/n, Bluetooth 4.2 / BLE |
| Antenna | Detachable 3 dBi external antenna (U.FL / IPEX connector) |
| USB bridge | Silicon Labs CP210x (driver installation required) |
| USB connector | USB Type-C (cable not included) |
| Programming | Arduino IDE, ESP-IDF, MicroPython, PlatformIO |
| Warranty | 3 months |
Good to Know
- Pin labels are not printed on the PCB — keep a pinout diagram to hand while wiring
- A USB Type-C cable is not included; make sure yours carries data, not power only
- New to the ESP32? Pair this board with a starter kit for an easier first project
What's in the Box
- 1 × IoTCrazy ESP32-WROOM-32U development board
- 1 × 3 dBi detachable external antenna
Where you'll put it to work.
A dual-core microcontroller with Wi-Fi and Bluetooth built in — the go-to board for connected devices that need to talk to phones, hubs and the cloud.
Smart home
Relays, lights and sensors that plug into Home Assistant, ESPHome or your own MQTT broker.
Wireless sensor nodes
Battery-powered stations that report temperature, humidity or soil moisture over Wi-Fi.
Bluetooth robotics
Control cars, arms and drones from a phone or gamepad over BLE — no extra radio module needed.
Cloud dashboards
Push live data to web dashboards and receive commands back through HTTP, MQTT or WebSockets.
Pairs well with this ESP32.
Related boards, kits and accessories picked from the same family.
Packed in Calgary. Paid through Stripe. Easy to return.
No account needed — guest checkout is the default, and your order number is all you need to track it.