How to Control Tracked Robot Via Joystick NRF24L01 Module Arduino Part2 Rx

 

 

      The instruction will describe the method how to build Receiver(Rx) on Tracked Robot for Transmitter(Tx) in the instruction "How to control Tracked Robot via  Joystick NRF24L01 Module Arduino Part1 Tx".
      More information : www.instructables.com 
Materials & Tools
Materials
1. 1 - Arduino controller - Nano

2. 1 - NRF24L01 module

3. 1 - Socket adapter for NRF24L01(For protect & stabilize NRF24L01 module)

4. 1 - LED 5 mm.


5. 1 - Resistor 1 kOhm. 1/4 watt.

6. 1 - Capacitor 0.1 microF /50V.

7. 1 - Capacitor 1 microF /50V.
8. 1 - Capacitor 100 microF /50V.
9. 1 - Diode 1N4001
10. 1 - 7805 IC Regulator 5V.
11. Dupont cable

12. Female pin header

13. 1 - L298N Arduino module

14. Electrical wires

15.Heat shrink tube 1.5 - 10 mm.

16. PCB - DIY circuit board



17. Battery Lipo 7.4 V. 500-1000 mAh

18. Velcro tape

19. Tamiya track and wheel set


20. Tamiya dual geared box


21. Tamiya plastic perforated plate


22. 2 - pairs of JST plug

Tools
1. Soldering gun.
2. Soldering wire.
3. Soldering paste.
4. Screw driver.
5. Plier.
6. Hot glue gun.
7. Miscellaneous screws ,bolts and nuts.
Electronic parts Installation

 

DIY PCB Building
Connecting electronic parts on PCB according to circuit diagram and solder them.

Arduino Nano pin to L298N
Pin No :
3 - ENA
4 - IN1
5 - IN2
6 - ENB
7 - IN3
8 - IN4
GND - GND of L298N
L298N module
Vcc - Battery positive pole
GND - Battery negative pole - GND of NANO
MotorA - Left motor
MotorB - Right motor
nRF24L01 module Socket Adaptor to Arduino Nano
Pin No :
Vcc - 5 V. supply (Do not connect 5V. directly to nRF24L01 module,it's supplied only 3.3V.)
GND - GND
CE - 9
CSN - 10
SCK - 13
MO - 11
MI - 12
IRQ - 2
*If you have communication problem,you can change connection from pin 13,11,12 to pin SCK,MOSI,MISO of Nano programming pins.
*It's necessary to add 0.1 microF to nRF24L01 module pin Vcc/GND because the module needs stable current and voltage.

Software Installation
Arduino sketch and Library :

1.Down load file .ino and library zip file GitHub.
2.Add library zip file to Arduino IDE.You will see new library RF24-master in Examples menu.
3.Before using new nRF24L01 modules,we shall burn the modules by uploading default sketch pingpair and GettingStarted for tuning up frequency otherwise it will has uncommunication problem.(Use another Arduino Nano and nRF24L01 modules for pairing)
4.After succeed matching the frequency ,we can upload Rx sketch  Rx_2CH_robot_V13_ NANO_for_remote_NANO_V2_public2 to Nano controller.
5.Test Receiver(Rx) with Transmitter(Tx).See serial monitor showing the print out data as attached video clip.