# Troubleshooting help for "Simple nRF24L01+ 2.4GHz transceiver demo"

**URL:** <https://forum.arduino.cc/t/troubleshooting-help-for-simple-nrf24l01-2-4ghz-transceiver-demo/1099625>\
**Category:** General Electronics\
**Created:** [March 9, 2023, 5:08am UTC](https://forum.arduino.cc/t/troubleshooting-help-for-simple-nrf24l01-2-4ghz-transceiver-demo/1099625 "2023-03-09T05:08:35Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![justin1](https://avatars.discourse-cdn.com/v4/letter/j/ea5d25/32.png) [@justin1](https://forum.arduino.cc/u/justin1)\
**Post date:** [March 9, 2023, 6:30pm UTC](https://forum.arduino.cc/t/troubleshooting-help-for-simple-nrf24l01-2-4ghz-transceiver-demo/1099625/6 "2023-03-09T18:30:57Z")

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> [@markd833](#):
>
> What does the CheckConnection sketch show in the serial monitor?

Swapping the MISO and MOSI pins yields the following result.

```arduino
CheckConnection Starting

FIRST WITH THE DEFAULT ADDRESSES after power on
  Note that RF24 does NOT reset when Arduino resets - only when power is removed
  If the numbers are mostly 0x00 or 0xff it means that the Arduino is not
     communicating with the nRF24

SPI Speedz	= 10 Mhz
STATUS = 0xff RX_DR=1 TX_DS=1 MAX_RT=1 RX_P_NO=7 TX_FULL=1
RX_ADDR_P0-1	= 0xffffffffff 0xffffffffff
RX_ADDR_P2-5	= 0xff 0xff 0xff 0xff
TX_ADDR = 0xffffffffff
RX_PW_P0-6	= 0xff 0xff 0xff 0xff 0xff 0xff
EN_AA = 0xff
EN_RXADDR	= 0xff
RF_CH = 0xff
RF_SETUP	= 0xff
CONFIG = 0xff
DYNPD/FEATURE	= 0xff 0xff
Data Rate	= 1 MBPS
Model = nRF24L01+
CRC Length	= 16 bits
PA Power	= PA_MAX
ARC = 15

AND NOW WITH ADDRESS AAAxR 0x41 41 41 78 52 ON P1
 and 250KBPS data rate

SPI Speedz	= 10 Mhz
STATUS = 0xff RX_DR=1 TX_DS=1 MAX_RT=1 RX_P_NO=7 TX_FULL=1
RX_ADDR_P0-1	= 0xffffffffff 0xffffffffff
RX_ADDR_P2-5	= 0xff 0xff 0xff 0xff
TX_ADDR = 0xffffffffff
RX_PW_P0-6	= 0xff 0xff 0xff 0xff 0xff 0xff
EN_AA = 0xff
EN_RXADDR	= 0xff
RF_CH = 0xff
RF_SETUP	= 0xff
CONFIG = 0xff
DYNPD/FEATURE	= 0xff 0xff
Data Rate	= 1 MBPS
Model = nRF24L01+
CRC Length	= 16 bits
PA Power	= PA_MAX
ARC = 15

```

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