Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates an Arduino Pro Mini, a TB6612FNG Motor Driver, an NRF24L01 wireless module with an adapter, a Regulator Stepdown DC XL4015 CC CV, a 7.4V battery, four DC motors, an OV7670 camera module, and an HC-05 Bluetooth module. The circuit is designed to control multiple DC motors, communicate wirelessly, and capture images.

Component List

Arduino Pro Mini

• Description: A compact microcontroller board based on the ATmega328.
• Pins: DTR, TXO, RXI, VCC, GND, A4, A5, RAW, RESET, A3, A2, A1, A0, SCK, MISO, MOSI, D10, D9, D8, D7, D6, D5, D4, D3, D2

TB6612FNG Motor Driver

• Description: A dual motor driver that can control two DC motors.
• Pins: GND, B01, B02, A02, A01, VCC, VM, PWMB, BI2, BI1, STBY, AI1, AI2, PWMA

NRF24L01

• Description: A wireless transceiver module for communication.
• Pins: IRQ (not used), MOSI, CSN, VCC (3V), GND, CE, SCK, MISO

NRF24L01 Adapter

• Description: An adapter for the NRF24L01 module to facilitate connections.
• Pins: CE, CSN, SCK, MOSI, MISO, IRQ, VCC, GND

Regulator Stepdown DC XL4015 CC CV

• Description: A DC-DC step-down voltage regulator.
• Pins: IN +, IN -, OUT +, OUT -

7.4V Battery

• Description: A power source for the circuit.
• Pins: +, -

DC Motor

• Description: A motor that converts electrical energy into mechanical motion.
• Pins: pin 1, pin 2

OV7670

• Description: A camera module for capturing images.
• Pins: RET, PWDN, D1, D0, D3, D2, D4, D5, D6, PLK, XLK, D7, VS, HS, SCL, SDA, 3.3V, DGND

HC-05 Bluetooth Module

• Description: A Bluetooth module for wireless communication.
• Pins: Key, VCC, GND, TXD, RXD, State

Wiring Details

Arduino Pro Mini

• TXO connected to HC-05 Bluetooth Module RXD
• RXI connected to HC-05 Bluetooth Module TXD
• VCC connected to HC-05 Bluetooth Module VCC
• GND connected to OV7670 DGND and HC-05 Bluetooth Module GND
• A4 connected to OV7670 SDA
• A5 connected to OV7670 SCL
• RAW connected to Regulator Stepdown DC XL4015 CC CV OUT +
• GND connected to Regulator Stepdown DC XL4015 CC CV OUT -
• VCC connected to TB6612FNG Motor Driver VCC and NRF24L01 Adapter VCC
• A0 connected to TB6612FNG Motor Driver STBY
• SCK connected to OV7670 HS and NRF24L01 Adapter SCK
• MISO connected to OV7670 VS and NRF24L01 Adapter MISO
• MOSI connected to OV7670 XLK and NRF24L01 Adapter MOSI
• D10 connected to OV7670 PLK and NRF24L01 Adapter CSN
• D9 connected to OV7670 D7 and NRF24L01 Adapter CE
• D8 connected to TB6612FNG Motor Driver BI1 and OV7670 D6
• D7 connected to TB6612FNG Motor Driver BI2 and OV7670 D5
• D6 connected to TB6612FNG Motor Driver PWMB and OV7670 D4
• D5 connected to TB6612FNG Motor Driver PWMA and OV7670 D3
• D4 connected to TB6612FNG Motor Driver AI2 and OV7670 D2
• D3 connected to TB6612FNG Motor Driver AI1 and OV7670 D1
• D2 connected to OV7670 D0

TB6612FNG Motor Driver

• VM connected to Regulator Stepdown DC XL4015 CC CV OUT +
• GND connected to Regulator Stepdown DC XL4015 CC CV OUT -
• VCC connected to Arduino Pro Mini VCC and NRF24L01 Adapter VCC
• STBY connected to Arduino Pro Mini A0
• BI1 connected to Arduino Pro Mini D8 and OV7670 D6
• BI2 connected to Arduino Pro Mini D7 and OV7670 D5
• PWMB connected to Arduino Pro Mini D6 and OV7670 D4
• PWMA connected to Arduino Pro Mini D5 and OV7670 D3
• AI2 connected to Arduino Pro Mini D4 and OV7670 D2
• AI1 connected to Arduino Pro Mini D3 and OV7670 D1
• B01 connected to DC Motor pin 2 (two motors)
• B02 connected to DC Motor pin 1 (two motors)
• A02 connected to DC Motor pin 2 (two motors)
• A01 connected to DC Motor pin 1 (two motors)

NRF24L01 Adapter

• GND connected to Regulator Stepdown DC XL4015 CC CV OUT -
• VCC connected to Arduino Pro Mini VCC and TB6612FNG Motor Driver VCC
• SCK connected to Arduino Pro Mini SCK and OV7670 HS
• MISO connected to Arduino Pro Mini MISO and OV7670 VS
• MOSI connected to Arduino Pro Mini MOSI and OV7670 XLK
• CSN connected to Arduino Pro Mini D10 and OV7670 PLK
• CE connected to Arduino Pro Mini D9 and OV7670 D7

Regulator Stepdown DC XL4015 CC CV

• IN + connected to 7.4V Battery -
• IN - connected to 7.4V Battery +
• OUT + connected to TB6612FNG Motor Driver VM and Arduino Pro Mini RAW
• OUT - connected to TB6612FNG Motor Driver GND and Arduino Pro Mini GND and NRF24L01 Adapter GND

7.4V Battery

• + connected to Regulator Stepdown DC XL4015 CC CV IN -
• - connected to Regulator Stepdown DC XL4015 CC CV IN +

DC Motor

• pin 1 connected to TB6612FNG Motor Driver B02 (two motors) and A01 (two motors)
• pin 2 connected to TB6612FNG Motor Driver B01 (two motors) and A02 (two motors)

OV7670

• DGND connected to Arduino Pro Mini GND
• SDA connected to Arduino Pro Mini A4
• SCL connected to Arduino Pro Mini A5
• HS connected to Arduino Pro Mini SCK and NRF24L01 Adapter SCK
• VS connected to Arduino Pro Mini MISO and NRF24L01 Adapter MISO
• XLK connected to Arduino Pro Mini MOSI and NRF24L01 Adapter MOSI
• PLK connected to Arduino Pro Mini D10 and NRF24L01 Adapter CSN
• D7 connected to Arduino Pro Mini D9 and NRF24L01 Adapter CE
• D6 connected to Arduino Pro Mini D8 and TB6612FNG Motor Driver BI1
• D5 connected to Arduino Pro Mini D7 and TB6612FNG Motor Driver BI2
• D4 connected to Arduino Pro Mini D6 and TB6612FNG Motor Driver PWMB
• D3 connected to Arduino Pro Mini D5