What is the difference between the esp32 cam and the esp32 except for the extra camera present in the esp32cam? Can an esp32 CAM be used to make a wifi controlled car? does it have the ability to control things or it is just a camera??
The cam model will have less pins available because many are dedicated to the camera port.
Possibly, depends on how much you are using the camera.
Sure does, I have one in my chicken coop that checks the temp, is responsible for the fire alarm, and controls the fan and heater, it also provides video when I want to check on them.
You can pair an ESP32-CAM and an ESP32 by serial connection to make a really responsive RC car with streaming video.
@Idahowalker Care to add your nickel's worth?
I want to make a robot connected to the wifi for long range having a camera with it...I only have an esp32CAM so will it be possible to make the car with it??
It's possible, but it might not be as responsive to the controls as you'd like.
Use the ESP32CAM as a camera with limited image processing capability. Using the ESP32CAM for much more becomes problematic because the ESP32CAM is busy doing cam things.
Some people get away with adding a thing or 2 to the CAM. You will find many long postings on this site with people trying to get the ESP32CAM to do to many things.
Depends upon your abilities.
I built a hexapod that uses LIDAR to navigate around a room. I used 3 ESP32's to run the Hexapod. One ESP32 just ran the legs, one ESP32 ran the LIDAR and the 3rd ESP32 as the brain. LIDAR works very well.
You may consider using ESP-NOW as a network topology.
On another note.
I am building my 2nd drone. Much of the drone things are modular, communicates with each other, and the code is open source. I originally was going to build my own from the ground up starting with an ESP32. I found using the available modular components got me flying faster and modular components save weight.
The current drone I am building is a FPV (First Person View) Drone. It flies, and I get images on my cellphone, but my cell phone controls are not working. I get the cellphone controls working and I can set down the manual controller and just use the phone to fly.
The same type of modular components are available for model cars.