This paper describes the design and implementation of a 12-channel wireless controller system using Arduino boards as transmitter and as well as receiver. The system includes NRF24L01 modules with both PCB and NRF antennas to achieve long-range wireless communication for precise control of multiple output devices including servo motors, DC motors, buzzers, LEDs, and relays. Each of the 12 channels operates separately, provides versatility for both industrial applications (remote machine control, agricultural equipment) and hobbyist uses (RC toys, home automation). The design prioritizes portability, scalability, and ease of use without requiring hardware modifications for different applications. Comprehensive testing validates reliable performance with stable signal transmission over extended ranges. This controller addresses key limitations of existing systems such as lack of versatility, hardware fragmentation, and limited wireless range.
Sah et al. (Wed,) studied this question.