Product details

Romeo ESP32-S3

Robot Control Boards and Computing Components

DFRobot

Romeo ESP32-S3

About this product

An ESP32-S3 robot development board with four motor-driver channels, camera and display connectors, and Wi-Fi/Bluetooth communication. It supports 2WD and 4WD robot projects, including FPV control. The shipped camera can be OV2640 or OV3660. Manufacturer sources disagree on SPI quantity and print incompatible metric/imperial dimensions; those claims remain explicitly qualified in Specifications.

Model
Romeo ESP32-S3 DFR0994
Category
Robot Control Boards and Computing Components, Components
Product stage
Commercial

Specifications & evidence

Source-backed claims. Configuration, workload and evidence type matter when comparing products.

5 v supply maximum output current

2 A

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Maximum Output Current of 5V Power Supply: 2A

Adc

Two 12-bit SAR ADCs; 20 channels

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
2×12-bit SAR ADC, 20 Channels

Bluetooth protocol

Bluetooth 5 and Bluetooth mesh

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Bluetooth Protocol: Bluetooth 5, Bluetooth mesh

Bluetooth published data rates

125 Kbps; 500 Kbps; 1 Mbps; 2 Mbps

Manufacturer specification

Configuration: DFR0994; Source labels these values frequency but prints data-rate units; values retained with their printed units.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Bluetooth Frequency: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps

Controller vin range

7–24 V

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
VIN Input Voltage: 7-24V

Digital i/o count

27 ports

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Digital I/O x27

Dma channels

5 transmit and 5 receive channels

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
DMA Controller: transmit channel x5, receive channel x5

Expansion connectors

GDI display, DVP camera, USB and MicroSD

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
On-board GDI display, DVP camera, USB, and MicroSD card interfaces

Flash

16 MB

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Flash: 16MB

I2c interfaces

2 interfaces

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
I2C x2

I2s interfaces

2 interfaces

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
I2S x2

Interface multiplexing

Functional pins are multiplexed; interface quantities are maxima

Manufacturer specification

Configuration: wiki-DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robot Development Board | WiFi & AI | DFRobot Wiki
The functional pins are multiplexed, and the above number of interfaces is the maximum value.

Ir transceiver channels

5 transmit and 5 receive channels

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
IR Transceiver: transmit channel x5, receive channel x5

Led pwm controller channels

8 channels

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
LED PWM Controller 8 Channels

Motor control modes

PH/EN and PWM

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Supporting both PH/EN control mode and PWM control mode

Motor drive capacity

2.5 A

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Motor Drive Capacity: 2.5A

Motor driver channels

4 channels

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
A four-channel 2.5A high-current H-bridge motor driver

Motor vm range

5–24 V

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
VM Input Voltage: 5-24V

Operating temperature range

0–60 °C

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Operating Temperature: 0 to 60℃

Operating voltage

3.3 V

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Operating Voltage: 3.3V

Processor

Xtensa dual-core 32-bit LX7

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Processor: Xtensa® dual-core 32-bit LX7 microprocessor

Processor clock

240 MHz

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Main Frequency: 240 MHz

Psram

8 MB

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
PSRAM: 8MB

Published dimension claim

25.4 × 60 mm / 2.95 × 3.54 inches

Manufacturer specification

Configuration: DFR0994; Manufacturer prints incompatible metric/imperial dimensions. Retained verbatim as an unresolved source conflict; do not use as a verified size.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Dimension: 25.4x60mm/2.95x3.54"

Rom

384 KB

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
ROM: 384KB

Rtc sram

16 KB

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
RTC SRAM: 16KB

Shipped camera selection

OV2640 or OV3660, randomly shipped

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
OV2640 or OV3660 camera x1 (randomly shipped)

Spi interface count

4 interfaces

Manufacturer specification

Configuration: DFR0994 store claim; Store claim conflicts with official wiki x2. Pins are multiplexed; manufacturer clarification required.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
SPI x4

Spi interface count

2 interfaces

Manufacturer specification

Configuration: DFR0994 wiki claim; Wiki claim conflicts with official store x4; pins are multiplexed and quantities are maximum values. Manufacturer clarification required.

Romeo ESP32-S3 Robot Development Board | WiFi & AI | DFRobot Wiki
SPI x2

Sram

512 KB

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
SRAM: 512KB

Uart interfaces

3 interfaces

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
UART x3

Usb-c input voltage

5 V

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Type-C Input Voltage: 5V

Usb protocol

USB 2.0 OTG full-speed

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
USB: USB 2.0 OTG full-speed

Wi-fi band

2.4 GHz

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
WIFI Frequency: 2.4GHz

Wi-fi channel bandwidths

20 or 40 MHz

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Bandwidth: Support 20 MHz and 40 MHz at 2.4 GHz band

Wi-fi frame aggregation

TX/RX A-MPDU and TX/RX A-MSDU

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
Frame Aggregation: TX/RX A-MPDU, TX/RX A-MSDU

Wi-fi operating modes

Station, SoftAP, combined SoftAP+Station

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
WIFI Mode: Station, SoftAP, SoftAP+Station combined mode

Wi-fi protocol

IEEE 802.11b/g/n

Manufacturer specification

Configuration: DFR0994; Manufacturer specification; no independent measurement.

Romeo ESP32-S3 Robotics Board | FPV Camera & Motor Driver - DFRobot
WIFI Protocol: IEEE 802.11b/g/n

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