One thing every hobbyist needs to do is build an RC car! I recently purchased a 20 dollar RC car from The Source and decided I wanted to use my phone as the Controller,which leads to this project.
I decided to strip the whole RC apart as I’m going to use an Arduino Uno to control it.
Features I’m adding:
- Android app to control it
- moves via Bluetooth (HC-06)
- leds for lights(signals etc)
- fog lights with Light detector
First off is the Fog lights portion. Basically I’m creating a dark(night) detector circuit to turn on the fog leds when its dark out.
Basically all you need is a LDR and a NPN transistor for this circuit. This is a fun unique way of adding lights beside the typical light button and then lights would turn on.
Now for the fun part! The actual RC construction. I’ll be using the HC-06 Bluetooth module ($6 from ebay) and the l298N($8 ebay) H bridge for the motor controls. Basically these two components get connected to the Arduino and the Motor’s on the chasis get connected to the output of the H-bridge.
The Enable pins of the H bridge must be connected to the pwm pins of the Arduino.
pinlayout becomes: (follow my pins if you want to use my Arduino Code)
- EnableA–>D10
- EnableB–>D9
- Input1–>D7
- Input2–>D4
- Input3–>D3
- Input4–>D2
- D1–>Bluetooth TX
- D0–>Bluetooth RX
- Output1&2 are connected to the accelerating motor(back)
- Output 3&4 are connected to the steering motor(front)
- Plus connecting all the VCC and ground pins
Stay Tune for Part Two! It will contain the Arduino Code and depict the Android app interface I made for it.
