วันเสาร์ที่ 20 มกราคม พ.ศ. 2561

How to Build Gripper Tracked Robot Via Nrf24l01 Arduino

          Instruction "How to Build Gripper arm Tracked Robot Controlled Via Nrf24l01 Arduino" will explain how to build a three degree of freedom gripper arm installed on tracked wheeler driven by dual motor drive L298N module using MEGA2560 Arduino controller.The gripper arm and robot movement will be remoted by 8-channel transmitter(see instruction "How to Build 8 Channel Transmitter nrf24l01 Arduino")

Materials

1. 1 - Arduino controller - MEGA2560











2. 1 - NRF24L01 module












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









4. 1 - LED 10 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 1N4007












10. 1 - 7805 IC Regulator 5V.

11. Ribbon wires.












12. Female pin header












13. Male pin header







14.1 - Dual motor drive L298N module












15. Male JST Battery Pigtail









16. Heat shrink tube 1.5 - 10 mm.







17. Velcro tape










18. 1 - PCB.DIY. circuit board












19. Battery Lipo 11.1V. 2200 mAh (3 cells)








20. Tracked wheel toy with dual motors









21. Electrical 26 AWG wires



22. Acrylic sheet 5 mm. thickness











23. Bolts M3

24. Nuts M3

25. Tapered head self-tapping screw









26. 1 - Three degree of freedom gripper arm












27. Dean plug










Tools

1. Soldering gun

2. Soldering wire

3. Soldering paste

4. Screw driver

5. Plier

6. Hot glue gun

7. Epoxy glue

8. Two sides glue tape

9. Plastic cutter

10. Electrical drill


11. Hack saw

Mechanical parts installation

1.Cut and drill acrylic sheet to make platform base for equipments installation.(As your own design) Example base plate drawing:



2.Fix acrylic sheet on tracked wheeler by self-tapping screws.

3.Fix gripper arm on base by M3 bolts and nuts.

4.Install L298N module on base by two-side glue tape.

5.Glue and paste velcro on acrylic base and battery.

Electronic parts installation

1.Making DIY PCB and wiring,soldering as above circuit diagram.

MEGA2560 pins to nrf24l01 module :









GND - GND

3.3V. - Vcc

9 - CE

53 - CSN

52 - SCK

51 - MOSI

50 - MISO

2 - IRQ

MEGA2560 pins to L298N module :

















3 - ENA

4 - IN1

5 - IN2

6 - IN3

7 - IN4

8 - ENB

MEGA2560 pins to three servoes of gripper arm :

11 - Arm1

12 - Arm2

13 - Gripper

6.Assembly PCB on MEGA2560,putting pins on the correct headers as circuit diagram.

7.Wiring and connecting three servoes of gripper arm to PCB.

8.Attach MEGA2560 board on acrylic base by two-side glue tape.

9.Wiring dual motors to L298N module.

10.Checking and finding short circuit points.(beware of high current electrical short circuit ,will caught fire)


11.Testing the direction of motors and gripper arm servoes.

Sketch uploading

1.Download sketch from Github.


2.Upload to MEGA2560 controller.
3.Test controlling between transmitter and gripper arm tracked robot.
Remarks : If the nrf24l01 module had never bound before see how to pair frequency in video clip.


วันอาทิตย์ที่ 14 มกราคม พ.ศ. 2561

433 Mhz Module RC Car{No coding Rx}

      The instruction "433 Mhz Module RC Car{No coding Rx}" introduce how to build radio controlled car using 433 Mhz Rx module and L298N dual motor drive module.
       For the transmitter instruction,see "433 Mhz Module DIY Transmitter {Tx without code} "

Materials
3. Electrical 26 AWG wires






4. 1 - Battery 6-12 V. (Nicad/2s-Lipo/Alkaline)





5. 1 - RC car toy with dual motor(Driving and Steering)
6. 1 - L298N module
7. Female pin header (2.54 mm. pitch)
8. JST plug




Tools
1. Soldering gun
2. Soldering wire
3. Soldering paste
4. Screw driver
5. Plier
6. Hot glue gun
Electrical parts Installation


1.Connecting and soldering wires between each equipments as shown in the electrical circuit diagram.

L298N module pin to Rx module
ENA - Vcc
IN1 - D0
IN2 - D1
IN3 - D2
IN4 - D3
ENB - Vcc
MotorA - Driving motor
MotorB - Steering motor
Tx-Rx Binding Method
See video clip here