Joystick module with WeAct Black Pill STM32F411CE

Wiring for the Analog joystick (KY-023) on the WeAct Black Pill STM32F411CE (STM32F411CE, 3.3 V logic), chosen with the same pin rules BoardPilot uses: default buses first, and no pins that are used for flash, USB, the debugger or booting.

Wiring

Joystick module pin	Role	WeAct Black Pill STM32F411CE pin	Notes
GND	Ground	G
+5V	Power	3V3	Connect to 3V3 anyway, so the outputs stay within the ADC range
VRX	Analog output	A1 (PA1)
VRY	Analog output	A2 (PA2)
SW	Output from the part	B12 (PB12)	Button: LOW when pressed. Use INPUT_PULLUP

Check before you power it on

Supply: 3.3 V from the 3V3 pin.

Test code (Arduino)

void setup() {
  Serial.begin(115200);
  analogReadResolution(12);
}

void loop() {
  long mv = (long)analogRead(PA1) * 3300L / 4095;  // VRX on A1
  Serial.println(mv);
  delay(200);
}

Arduino board: STMicroelectronics:stm32:GenF4:pnum=BLACKPILL_F411CE,usb=CDCgen,upload_method=dfuMethod. To upload over USB, hold BOOT0, press and release NRST, then release BOOT0 (DFU mode). An ST-LINK on the SWD pins also works.

Questions

Which WeAct Black Pill STM32F411CE pins do I use for the Joystick module?

GND → G, +5V → 3V3, VRX → A1 (PA1), VRY → A2 (PA2), SW → B12 (PB12).

Does the Joystick module work with the WeAct Black Pill STM32F411CE at 3.3 V?

Yes: the Joystick module runs at 3.3 V and the WeAct Black Pill STM32F411CE uses 3.3 V signals, so no level shifting is needed.

BoardPilot checks this wiring in 3D as you build it, and finds crossed or missing wires on the real board.

Download BoardPilot

Full WeAct Black Pill STM32F411CE pinout · Analog joystick (KY-023): all pins and data

The Joystick module on other boards

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