Arduino R3 vs Arduino R4 Wifi, which to buy for advanced rc car

Other Hardware Product Design
1

I am a newbie to arduino boards, I have been using compatible cheap boards for a year or 2, but now I am thinking to buy an original and new Arduino board, the project which I want to make it is basically a rc car which runs from bluetooth, from my android/ios device, and my car has a cam on it whose live feed can be seen on my phone. Or, buy a TFT touch display instead of phone, attach it on an arduino uno board, and a joystick also, to control the car. Either way I'm good, phone or board.

Also, I was unable to find arduino r3 with inbuilt wifi and bluetooth module.

Now, the number of problems are -

  1. Buy which board for my car and the remote control both (Uno R3 normal or Uno R4 Wifi & Bluetooth inbuilt?
  2. Will my R4 be compatible to those libraries of my TFT display and all?
  3. Which bluetooth module to buy, HC05 or HC06? It has to be IOS compatible.

also, I will use RF transmitter reciever if I use two arduino boards for control and drive.

  1. So which RF to buy? 433 MHz or 2.4 GHz?
  2. Which camera should I buy? AVG OV7670 or OV9872 or similar to them, so that I can get a fair enough FPS to see and drive wirelessly? I know it also depends on processing power and transmition rate, that is why I asked you sir to buy which board and bluetooth module...
  3. Which motors to use to give it a good combination of speed and power, like those used in rc rock crawlers, I want a bit power but higher speed?

Please don't criticise me as a bad idea or something, it has been my dream doing this thing, and I have a budget of 5k inr. So if possible, please give me links of the items and subtle instructions. Also, if possible please provide the links from websites like - Robu.in, robocraze.com, etc. and not amazon as it is expensive on amazon. Or rather you can just tell me models and I'll search by myself, please keep an eye on the compatibility of the modules with the boards you suggest. ~ Thanks a lot!! ~ Need a help of a good and knowledgable person in this field... :slight_smile:

2

Hey bro, your idea is very nice and interesting, but your budget will be an obstacle while making this project. The uno R4 itself costs around 2k inr. First try to increase your budget till 8k inr. I prefer you to go with UNO R4, Johnson 250 RPM. Both HC05 and HC06 are not compatible with iOS

3

Sure, but what about the rf, cam, and tft screen? also, will uno r4 will be able to contact with another uno r3 via bluetooth wirelessly?

4

Neither Uno will be capable of transmitting video of any reasonable quality at any reasonable framerate. Consider something like an Rpi zero-w.
I'm not sure that video is even possible over BT ( https://www.quora.com/Is-it-possible-to-stream-live-video-over-Bluetooth-to-Android-Mobile )

5

Ok sir, can you please suggest me a screen to buy which will be compatible with uno r3, also, a wifi module, secondly, how can I use wifi to do that instead of bt?

6

The easiest way to do what you want is to use an ESP32-Cam for the camera and a different board for the car itself (although the esp32 cam can do both if you wish). You setup the cam as a wifi camera server (there is example code in the Arduino IDE that does exactly that) and then use something like the Acebott arduino uno alternative to do the motors/remote control. Acebot makes a board that uses the ESP32 WROOM as the microcontroller but the form fact is 1:1 compatible with arduino uno (including motor shields etc.). It has bluetooth and wifi built in. You can pickup an esp32 cam for about $10 US, and the Acebott board for about $15 US. The arduino IDE works with both and by separating the cam from the car (as different subsystems), you'll get better performance from both.

I have one of the Acebott boards. It's great.

ACEBOTT QA007 ESP32 Max V1.0

ESP32-CAM