This development board based on the ESP32 MCU is the perfect solution for those who want to control up to 18 servomotors. Thanks to the integrated Wi-Fi and Bluetooth communication module, it is possible to remotely control the system with maximum flexibility.

Power is supplied by a 7.4V Lithium battery (sold separately). To ensure stable operation, the board is equipped with two integrated voltage regulators that provide a constant 5V output, regardless of the battery's charge level. Additionally, there is an On/Off toggle switch, making it easy to turn the board on and off quickly.

The board includes six RGB LEDs with Neopixel technology (WS2812). These LEDs, with four pins (two for power and two for cascading connection), can be easily controlled with a single digital line, allowing you to control the on/off state and the color of each individual LED. They are perfect for creating customizable light effects.

Moreover, the board is equipped with three programmable buttons, which can be configured to execute specific functions, adding an additional level of interactivity to the project.

Ideal for applications in robotics and automation, this board offers all the power of the ESP32 with an optimized design for managing servomotors and advanced lighting effects.

• Microcontroller: ESP32 Dual-Core Xtensa LX6
• Clock Speed: Up to 240 MHz
• Memory:
  • RAM: 520 KB
  • Flash Memory: Up to 4 MB
• Connectivity:
  • Wi-Fi: 2.4 GHz, 802.11 b/g/n
  • Bluetooth: BLE (Bluetooth Low Energy) and Bluetooth Classic
• GPIO:
  • GPIO Pin Power: 3.3V logic (with short circuit protection)
• Servomotors:
  • Number of PWM Channels for Servomotors: 18 (controllable via digital I/O)
  • PWM Resolution: 12-bit (4096 steps)
  • Servomotor Power Supply: 5V (provided by internal voltage regulators)
• RGB Neopixel LEDs:
  • Number of Integrated RGB Neopixel LEDs: 6
  • Technology: Neopixel WS2812 (controllable via a single digital line for on/off and color adjustment)
• Power Supply:
  • Supply Voltage: 6V – 8.4V (Lithium battery, sold separately)
  • Voltage Regulators: 2 integrated voltage regulators providing a stable 5V output

• Firmware development can be carried out using the Arduino IDE. To set up the development environment, you need to install the ESP32 package by following these steps:
• Open the Arduino IDE and go to Settings.
• In the "Additional Boards Manager URLs" section, enter the following link: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
• Restart the IDE and, through the Boards Manager, install the Arduino ESP32 Board package.

• You can write custom code based on your needs. However, for a more practical approach to the board's features, we have made several test sketches available, the same ones used for the HEXAPOD robot:

• TEST_SERVO
• TEST_RAMP
• TEST_LEDRGB
• TEST_BUTTON
• TEST_BT
• TEST_ADC

• The SPIDERBOT sketch combines all the test functionalities and implements the coordinated movement of the HEXAPOD robot.

This development board integrates an ESP32 Bluetooth module, allowing for easy control from an Android smartphone or PC. The setup is straightforward: with just two lines of code, you can activate it and assign a name to the device. Data management is handled through a virtual serial port, simplifying software development.

To control the system, simply install the free Bluetooth Electronics app from the Play Store. The app allows you to create a custom dashboard to send and receive commands intuitively.

• Sketch Arduino