Hi there. Many thanks to your great efforts. I'm trying to build RC car with mecanum wheels. I wanted to use my old Syma remote controller on this project. I have very little programming skills so I couldn't figure it out how to fix below errors in Arduino IDE.

Arduino: 1.8.13 (Mac OS X), Board: "Arduino Uno"

libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::hopToNextChannel()'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::~NRF24_RX()'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::~NRF24_RX()'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::~NRF24_RX()'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::NRF24_RX(NRF24L01*)'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::NRF24_RX(NRF24L01*)'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::NRF24_RX(unsigned char, unsigned char)'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::NRF24_RX(unsigned char, unsigned char)'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::crcOK(unsigned int) const'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::initialize(unsigned char, unsigned char)'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/NRF24_RX.cpp.o (symbol from plugin): In function NRF24_RX::hopToNextChannel()': (.text+0x0): multiple definition of NRF24_RX::protocolString'
sketch/NRF24_RX.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::setHoppingChannels()'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::~CX10_RX()'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::~CX10_RX()'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::~CX10_RX()'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::begin(int, unsigned long const*)'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::txAddr'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::rxAddr'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::checkBindPacket()'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::CX10_RX(NRF24L01*)'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::CX10_RX(NRF24L01*)'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::CX10_RX(unsigned char, unsigned char)'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::CX10_RX(unsigned char, unsigned char)'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::convertToPwmUnsigned(unsigned char const*)'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::setRcDataFromPayload(unsigned int*) const'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::readPayloadIfAvailable()'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_cx10.cpp.o (symbol from plugin): In function CX10_RX::setHoppingChannels()': (.text+0x0): multiple definition of CX10_RX::dataReceived()'
sketch/nrf24_rx_cx10.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::setRcDataFromPayload(unsigned int*) const'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::~H8_3D_RX()'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::~H8_3D_RX()'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::~H8_3D_RX()'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::checkBindPacket()'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::H8_3D_RX(NRF24L01*)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::H8_3D_RX(NRF24L01*)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::H8_3D_RX(unsigned char, unsigned char)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::H8_3D_RX(unsigned char, unsigned char)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::convertToPwm(unsigned char, int, int)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::setHoppingChannels(unsigned char const*)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::setBound(unsigned char const*)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::dataReceived()'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::rxAddr'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::begin(int, unsigned long const*)'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::checkSumOK() const'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/nrf24_rx_h8_3d.cpp.o (symbol from plugin): In function H8_3D_RX::setRcDataFromPayload(unsigned int*) const': (.text+0x0): multiple definition of H8_3D_RX::hopToNextChannel()'
sketch/nrf24_rx_h8_3d.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/xn297.cpp.o (symbol from plugin): In function XN297_UnscramblePayload(unsigned char*, int, unsigned char const*)': (.text+0x0): multiple definition of XN297_UnscramblePayload(unsigned char*, int, unsigned char const*)'
sketch/xn297.cpp.o (symbol from plugin):(.text+0x0): first defined here
libraries/NRF24_RX-master/xn297.cpp.o (symbol from plugin): In function XN297_UnscramblePayload(unsigned char*, int, unsigned char const*)': (.text+0x0): multiple definition of XN297_WritePayload(unsigned char*, int, unsigned char const*, NRF24L01*)'
sketch/xn297.cpp.o (symbol from plugin):(.text+0x0): first defined here
collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board Arduino Uno.

Hi Martin,
Can you inclued the good library for this project because it have many library are named "NRF24" or can you use one file which fonction (https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/Multiprotocol/NRF24l01_SPI.ino

Thanks!