This development board features the ESP32-WROOM-32E module (2023 version). Compared to older versions, it offers improved manufacturing processes, lower power consumption, and enhanced signal quality. With a dual-core 240MHz processor and integrated high-current power management, it is designed for both high-performance IoT applications and easy-to-use STEM robotics projects.
Technical Specifications
| Parameter | Specification |
| Product Name | ESP32-WROOM-32E WiFi Bluetooth Development Board |
| Main Module | ESP32-WROOM-32E Module |
| Processor | Dual-core Xtensa® 32-bit LX6 Processor |
| Clock Speed | Up to 240MHz |
| Wireless | Wi-Fi + Bluetooth |
| Bluetooth Standard | Bluetooth 4.2 |
| Operating Voltage | 3.3V |
| DC Input | 6–12V DC |
| USB Interface | USB Type-C |
| Flash | 4MB / 8MB / 16MB optional |
| SRAM | 520KB |
| ROM | 448KB |
| RTC SRAM | 16KB |
| Digital Pins | 20 digital pins |
| Analog Input Pins | 6 analog input pins: GPIO32, GPIO33, GPIO34, GPIO35, GPIO36, GPIO39 |
| Expansion Interface | 2.54mm G/V/S expansion headers |
| Communication Interfaces | I/O, I2C, SPI, UART |
| Protection | Resettable fuse, onboard circuit protection, automatic power switching |
| Recommended Use | IoT, robotics, smart home, STEM education, Arduino projects |
Key Features
- Original 2023 ESP32-WROOM-32E Module: Ensures stability and excellent signal performance.
- Enhanced Power Supply: Integrated 5V/2A (10W) power module capable of driving multiple servos, toy motors, and micro-slides.
- G|V|S Header Interface: Features 2.54mm pitch GVS (Ground-Voltage-Signal) headers, allowing direct sensor/actuator connection without an additional expansion shield.
- Auto Power Switching: Built-in FDN340P FET and LMV358 amplifier circuit for seamless switching between USB and external DC power, protecting your computer from interference.
- Circuit Protection: On-board resettable fuse to prevent short circuits and protect your computer’s USB port.
- Type-C Interface: Reversible connector for easier data downloading and power supply.
Projects You Can Build
This ESP32 WiFi/Bluetooth board is ideal for a wide range of STEM projects. Key features include integrated Wi-Fi and Bluetooth, a 240MHz dual-core processor, abundant I/O interfaces, a USB Type-C port for programming, support for 6–12V DC input, 2.54mm G/V/S expansion headers, and compatibility with popular programming environments like Arduino.
- Multi-DOF Robotic Arm: Drive 4–6 SG90 servos directly with the high-output 5V/2A power module for stable and precise object grasping.
- WiFi Obstacle-Avoiding Car: Easily connect DC motors and ultrasonic sensors for real-time remote control via a smartphone or web interface.
- BLE Smart Access System: Build proximity-based entry systems using Bluetooth Low Energy to trigger servos or electromagnetic locks automatically.
- Automated Smart Farm: Automate irrigation and lighting based on soil/light sensors, with direct support for 5V pumps and remote data monitoring.
Application Scenarios
The ESP32-WROOM-32E development board integrates a high-power 5V/2A power supply and solder-free GVS interfaces, enabling direct control of motors and sensors without the need for additional expansion boards; it is a robust and reliable platform for transitioning from experimental prototypes to real-world projects.
- Smart Curtain & Blind Automation: Automate your home curtains to open/close based on sunlight levels or via a smartphone app.
- Automatic Balcony Irrigation System: A smart plant-care system that monitors soil moisture and automatically triggers a water pump when needed.
- Smart Pet Feeder & Remote Interactive Toys: Schedule pet feedings or control a laser pointer/treat dispenser remotely via WiFi to interact with your pets while you’re away.
- Interactive IoT STEM Education: A collaborative classroom project where students build a miniature “Smart Application.”
Why Choose Us
- OEM/ODM & Customization: We provide turnkey OEM/ODM solutions tailored for B2B clients. Whether you need custom Logo silk-screening, specific Flash/PSRAM configurations (like 4MB to 16MB), a completely bespoke PCB layout, or others. Our engineering team can move from concept to prototype in as little as 14 days.
- Reliable Quality Control: Before shipment, products undergo incoming material inspection, soldering checks, functional testing, interface testing, power-on testing, and packaging inspections, achieving a 99.8% pass rate for mass shipments. This minimizes customer return rates and reduces costs associated with after-sales communication.
- Focused on STEM & IoT Education Hardware: With extensive experience in educational hardware—including ESP32 and Arduino platforms, Micro-controllers, sensor modules, and kits for robotics, smart homes, and smart farming—we deeply understand the practical requirements of classrooms, training centers, and maker projects. Our products are optimized for teaching, demonstrations, and volume distribution.
- Export Experience: With over five years of experience and exports to 30+ countries, we are thoroughly familiar with the regulatory standards of markets in the US, Europe, Oceania, and Southeast Asia; Products are CE, FCC, and RoHS certified.
FAQ
Q1: What are the primary hardware advantages of the ESP32-WROOM-32E over the older 32D or generic ESP32 boards?
A: The 32E version (released by Espressif in 2023) uses an improved chip manufacturing process. According to the official datasheet, it features optimized low-power performance and enhanced RF stability. Specifically, this board integrates a 5V/2A (10W) buck converter and GVS headers, which eliminates the need for an external expansion shield when driving high-load peripherals.
Q2: How much current can the board actually output to external modules (Servos/Motors)?
A: This board is equipped with a high-efficiency 5V/2A power management module. While the ESP32 chip itself consumes roughly 80mA to 240mA during peak WiFi transmission, the remaining ~1700mA is available for external devices via the GVS headers. This is sufficient to drive 4-6 SG90 micro servos or 2 small DC motors simultaneously without a separate power driver.
Q3: Does this board support Wi-Fi and Bluetooth?
Yes. The ESP32-WROOM-32E module supports 2.4GHz Wi-Fi 802.11 b/g/n and Bluetooth 4.2, including Bluetooth BR/EDR and Bluetooth LE.
Q4: Is this board compatible with Arduino IDE and MicroPython?
A: Yes, 100%. It is fully compatible with the official ESP32 Arduino Core and can be programmed as a “DOIT ESP32 DEVKIT V1” or “ESP32 Dev Module.” It also supports MicroPython and CircuitPython firmware, providing a robust platform for both professional IoT development and STEM education.
Q5: What is the difference between ESP32-WROOM-32E and ESP32-WROOM-32UE?
A: ESP32-WROOM-32E uses an onboard PCB antenna, while ESP32-WROOM-32UE uses an external antenna connector. For normal classroom, smart home, and maker projects, ESP32-WROOM-32E is usually more convenient.
Q6: Is this board suitable for AI vision or camera projects?**
A: It is better suited for IoT, wireless control, sensors, and robotics projects. For camera, AI vision, USB HID, or more advanced edge-AI projects, ESP32-S3 or ESP32-CAM type boards are usually more suitable.
Q7: What should users pay attention to when using external modules?
A: Please check voltage compatibility, avoid connecting 5V signals directly to ESP32 GPIO pins, use external power for high-current devices, and make sure the wiring matches the correct I/O, I2C, SPI, or power pins.
