The Optimus ESP32-S3 Terminal Adapter is a passive breakout board designed for the 44-pin ESP32-S3-DevKitC-1. It converts the development board’s header pins into clearly labelled screw terminals for secure and convenient connection of sensors, modules, actuators, and test equipment.

Specifications

• Compatible board: ESP32-S3-DevKitC-1, 44-pin version
• DevKit interface: 2 × 22-pin female headers
• Header pitch: 2.54 mm
• Terminal configuration: 4 × 11-way screw terminals
• Terminal pitch: 3.81 mm
• Available rails: 3.3 V, 5 V, and GND
• Exposed signals: GPIO, UART, USB, ADC, touch, reset, and power
• Signal routing: Direct one-to-one passive connections
• Mounting: Four corner mounting holes
• Protection and level shifting: Not included
• Pinout & Terminal Definition
• 3V3: Regulated 3.3 V rail from the installed DevKit
• +5V: DevKit 5 V supply rail
• GND: Common electrical ground
• RST: Reset/enable connection
• TX and RX: UART0 serial communication
• GPIO0–GPIO48: Available ESP32-S3 GPIO connections as labelled
• GPIO19 and GPIO20: Native USB D− and D+ when USB is enabled
• GPIO0, GPIO3, GPIO45, and GPIO46: Boot-related pins requiring careful use

Features

• Breaks out all 44 DevKit header positions
• Secure screw-terminal field wiring
• Clearly labelled terminal connections
• Direct access to power and GPIO pins
• No additional firmware or drivers required
• Suitable for repeated wiring and testing
• Four mounting holes for enclosure installation

Common Applications

• ESP32-S3 prototyping and development
• Robotics and IoT projects
• Sensor and actuator interfacing
• Educational electronics laboratories
• Automation demonstrations and test fixtures
• Low-voltage control-panel prototypes

Usage Tips

• Disconnect USB and external power before wiring.
• Confirm the DevKit orientation before inserting it.
• ESP32-S3 GPIO operates at 3.3 V and is not 5 V tolerant.
• Use external drivers for motors, relays, and high-current loads.
• Avoid powering the 5 V rail externally while USB is connected unless the power path has been verified.
• Check 3V3, 5V, and GND for short circuits before switching on.