Editing Analog Joystick

= Description =
The analog joystick includes 2 [[Potentiometer]] and one digital switch.

It has 5 connectors:
* GND - connected to GND
* 5V - which is in our cases connected to 3.3V
* VRx - the voltage representing the position in X
* VRy - the voltage representing the position in Y
* SW - 0 if pressed

[[File:Joystick-close.JPG|x300px]]

= How to connect it electrically =
[[File:Joystick-electro.JPG|x400px]]


= How to control it in MicroPython =

== Basic code to generate a 500 Hz signal ==
reading all values and printing them to the console
<syntaxhighlight lang="python" line='line'>
#Example usage for ESP32
from machine import Pin, ADC
from time import sleep
# analog inputs for X and Y
analogPinX = ADC(Pin(34))
analogPinY = ADC(Pin(35))
#switching the analog input to 12Bit (0...4095)
analogPinX.atten(ADC.ATTN_11DB)
analogPinY.atten(ADC.ATTN_11DB)
# digital input on pin 26
sw = Pin(26, Pin.IN, Pin.PULL_UP) # enable internal pull-up resistor

while True:
  analogValX = analogPinX.read()
  analogValY = analogPinY.read()
  switch = sw.value()

  print("x:%s   y:%s   sw:%s" % (analogValX, analogValY, switch))
 
  sleep(1)
</syntaxhighlight>

= Related Tutorial Videos =
<youtube>3J3GbD2PrCs</youtube>


= Background =
This is conceptually what is inside the joystick.

[[File:Joystick-inside.PNG|x400px]]