Build OmArm Zero, a 6-DOF (5+1 gripper) robotic arm with ESP32 WiFi control. Complete build guide with 3D printing files, wiring diagrams, firmware, and a browser-based control interface. 303mm reach, 150g payload, under $50.
Learn how to control two servo motors with a joystick and SSD1306 OLED display using Arduino. Complete beginner tutorial with wiring diagram, full code, code explanation, calibration tips, troubleshooting, and FAQ.
Servo motors show up in almost every Arduino project I build, so I wrote this to cover the basics in one place. It starts with the SG90 micro servo and how PWM signals control the angle, then moves to running multiple servos using a PCA9685 driver board. All the code is tested and ready to use.