4 IN 1 RF module integrates four RF chips( CC2500, NRF24L01, A7105, CYRF6936 ) in one single PCB board.
It supports more than 10 different protocols while working with MCU board, such as Frsky, Flysky, Hisky, Devo, DSM2, V2x2 and so on.
You can use arduino nano to DIY your own MCU board, it also can be used with walkera devo transmitter.
Description:
1. Arduino promini 5V/16Mhz(Protocols are using as witness the existing on board LED on B5 pin). It can be used also any setup with Atmega328P/16Mhz.
2. A7105 module(X7105-D03 PA/LNA module, V911,V939 harvested TX modules)
3. CC2500 PA/LNA module
4. Nrf24L01 PA/LNA module
5. Devo module(based on CYRF6936)
6. AMS1117 -5V and AMS1117-3.3V, LDO voltage regulator or any other regulators over 800mA.
7. Resistor 20K(between NRF_CE pin to Vcc)
8. Caps 22-47uF(3 pcs on ldo’s)
9. Rotary dip switch 16 positions or DIP switch 4 positions this is required only in PPM mode.
Now in the serial mode with er9x/ersky9x/opentx there is no need to use dial switch anymore.
Pin function
| Number | Name | Property | Description |
| 1 | VCC | Power | 3.3V Power supply |
| 2 | GND | Power | ground |
| 3 | PE1 | input | Switch for RF chips |
| 4 | PE2 | input | Switch for RF chips |
| 5 | CSN1 | input | A7105 chip select |
| 6 | CSN2 | input | CC2500 chip select |
| 7 | CSN3 | input | NRF24L01 chip select |
| 8 | CSN4 | input | CYRF6936 chip select |
| 9 | SCK | input | SPI clock signal |
| 10 | MOSI | input | SPI input for slave device |
| 11 | MISO | output | SPI output for slave device |
| 12 | CYRF_RST | input | CYRF6936 Reset |
| 16 | RFO | in/out | RF signal, connect to antenna |
| others | GND | Power | ground |
Truth table:
| status | PE1 | PE2 |
| A7105 RF signal to antenna | Low level | Low level |
| CC2500 RF signal to antenna | Low level | high level |
| NRF24L01 RF signal to antenna | high level | Low level |
| CYRF6936 RF signal to antenna | high level | high level |
For more information, please visit the RCG forum:
http://www.rcgroups.com/forums/showthread.php?t=2165676
Supported Protocols:
– Flysky (Generation I protocol,based on A7105,tested)
– Hubsan (Based on A7105,tested)
– Frsky (Based on CC2500,tested)
– Hisky (Based on24L01,tested)
– V2x2 (Based on 24L01)
– Dsm2 (Based on CYRF6936,tested)
– Devo (Based on CYRF6936,tested)
– YD717 (Based on 24L01 )
– KN (V977,Based on 24L01,tested)
– SymaX (Based on 24L01)
– SLT (Based on 24L01)
– CX10 (Based on 24L01)
– CG-023
– BAYANG
– SIMAX5C
Note:
The above protocols are transplanted from open Destination projects based on the remote control Walkera DEVIATION,the the original author have tested almost the protocols,but he is not specially test for this 4 in 1 wireless module,the protocols our supplier tested have been stated above,untested protocols does not rule out is not supported,but there may be a problem of program configuration,so not rule out the subsequent firmware can support.
Open Destination protocol is mostly cracked,protocol version is constantly updated,inevitably there are omissions. Including but not limited to the following issues:
– Part program version DSM2 have protocol compatibility problems.
– Some receiver (original AR600) need to rebind per use,some receiver (Spektrum integrated receiver) frame rate is a bit slow. This issue basically determine the problem is on the program itself.
Tested Ground Control Distance:
CC2500: V8FR receiver with Frsky protocol,about 240m.
A7105: WLToys V911 helicopter with Flysky 8 ch receiver,based on Flysky protocol,about 240m.
CYFR6936: Spektrum MCPX helicopter with DSM2 protocol,Walkera SUPERCP helicopter with DEVO protocol,about 200m,
NRF24L01: WLToys V977 helicopter with KN protocol,use Walkera DEVO transmitter,about 200m (If equipped with MCU baseplate,only 50m). Hisky HCP100S helicopter with Hisky protocol,about 70m.
Firmware & Software,please
Example for MCU Board:
Package included:
1 x DIY 2.4G CC2500 NRF24L01 A7105 CYRF6936 Multi RF 4 IN 1 Wireless Module
