DIYRoboticArm
HiLetgo ESP-WROOM-32 ESP32 Development Board
Microcontroller Boards

HiLetgo ESP-WROOM-32 ESP32 Development Board

by HiLetgo

★ Best for: Wireless / web-controlled arms

Dual-core ESP32 with built-in Wi-Fi + Bluetooth — control your arm wirelessly, no extra radio.

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Why we recommend it

The ESP32 is the brain to choose when you want to drive your arm wirelessly. A dual-core 240 MHz processor with Wi-Fi and Bluetooth built in lets you serve a browser control page or use a phone app without bolting on a separate radio module — and it still has plenty of headroom for sensors and simple inverse kinematics. It talks to a PCA9685 over I2C to drive the servos cleanly (the GPIO is 3.3V, so never power servos from the board). HiLetgo is a reliable, widely-used brand, and the board works with the Arduino IDE, so all the usual libraries apply. The natural upgrade from a wired Arduino arm.

At a glance

MCUESP32 (dual-core 240 MHz)
WirelessWi-Fi 2.4 GHz + Bluetooth/BLE
Logic3.3V GPIO
InterfacesI2C, SPI, UART, ADC
IDEArduino IDE / MicroPython / ESP-IDF
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Guides that use this

Builds by platform

ESP32 Robotic Arm: Wi-Fi Servo Control (Wiring + Code Plan)

Build an ESP32 robotic arm with wireless control. Why the ESP32 suits robot arms, how to wire it to a PCA9685 and servos, power tips, and a web/BLE control plan.

◆ Intermediate Read →
Builds by platform

Arduino Robotic Arm: Build a 4-DOF Servo Arm (Wiring + Code)

Build a 4-DOF Arduino robotic arm with hobby servos. Full parts list, wiring diagram, power tips and copy-paste Arduino code to control it with potentiometers or serial commands.

◆ Intermediate Read →
Builds by platform

Raspberry Pi Robotic Arm: Add Vision, AI and a Web Interface

Build a Raspberry Pi robotic arm — when to choose a Pi over Arduino, controlling servos with a PCA9685, adding camera vision, and driving the arm from a web browser with Python.

◆ Advanced Read →

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