This guide shows how to add and use a joystick widget with Blynk (mobile app + microcontroller) to control a device (e.g., robot or RC car) using an ESP32 or Arduino with Wi-Fi. It includes wiring, example code (Arduino/ESP32), Blynk app setup, calibration, and tips.
This is not a visual gimmick. By sending analog data rather than simple digital "on/off" signals, the Blynk Joystick allows for nuanced control. Want your robot to move slowly through a narrow doorway? Tilt the stick slightly. Need it to sprint across the living room? Slam it to the edge. blynk joystick
ESP8266 / ESP32 → L298N Motor Driver - Virtual Pin V0 (X-axis) → Left motor speed/direction - Virtual Pin V1 (Y-axis) → Right motor speed/direction This guide shows how to add and use
-axis controls differential steering by altering right and left wheel rotations. By sending analog data rather than simple digital
// 4. Map the values // Joystick sends 0-255. Servos usually like 0-180 degrees. int panPos = map(xVal, 0, 255, 0, 180); int tiltPos = map(yVal, 0, 255, 0, 180);