STM32 Dual-Joystick Wireless Controller (nRF24)
- MCU: STM32F103C8T6 (“Blue Pill”) or STM32F030C8 (lower cost). Runs at 72 MHz (F103) or 48 MHz (F030), 3.3 V logic.
- Inputs: Two analog joysticks (X/Y each) + 2 push-buttons (INT / INTERRUPTOR).
- Wireless: nRF24L01+ 2.4 GHz module (SPI).
- Power: Single 5 V input (USB or barrel). On-board 3.3 V LDO for MCU + radio (e.g., AMS1117-3.3) with good decoupling.
- Typical use: sample joysticks and buttons at ~100–200 Hz, build a packet, send over nRF24 to a robot/receiver.
STM32 Dual-Joystick Wireless Controller (nRF24)
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