Blynk Joystick ⟶ [PLUS]

The joystick can be configured in several ways:

#define BLYNK_PRINT Serial #include <WiFi.h> #include <BlynkSimpleEsp32.h>

: Most setups utilize the "Auto-Return" feature, which snaps the joystick back to the center (zero) when you release your thumb. Technical Setup: Connecting to Hardware

// This function runs whenever the app sends new joystick data BLYNK_WRITE(V0) // X Axis xValue = param.asInt(); blynk joystick

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The Blynk Joystick is a mobile app widget that acts as a 2-axis joystick (X and Y). It sends coordinate data to your microcontroller, allowing for smooth, real-time, analog-like control of your hardware.

values must be mixed mathematically to determine individual left and right wheel speeds: The joystick can be configured in several ways:

void updateMotors() // Map joystick Y (-10 to +10) to motor speed (-255 to +255) int motorValue = map(joyY, -10, 10, -255, 255);

BLYNK_WRITE(V0) : This function is called every time the Blynk server receives a new value on virtual pin 0 (X-axis).

Create a new template for your device (e.g., ESP32 or NodeMCU). If you share with third parties, their policies apply

Moving an object with a swipe of your finger used to be reserved for Jedi Knights and sci-fi movies. Today, it’s a Tuesday afternoon project for anyone with a Wi-Fi chip and a smartphone.

Before we focus on the Joystick, it’s worth understanding the platform that makes it all possible.

If you prefer cleaner math over string parsing, go back to your Blynk Dashboard. Instead of "Merge" output on the Joystick widget, select "Separate".

: Perfect for adjusting the view of a mounted smartphone or webcam. Moving the joystick maps to angles between 0∘0 raised to the composed with power 180∘180 raised to the composed with power