@athena I use esp32 Cam (<$5 from China) in a lot of my robots to stream video.  So these make great low cost robot controllers although you can only run a handful of servos on them as most of the IO ports are used up by camera.

I haven’t found a good servo shield for them yet so I make my own (time consuming and painful)   I have a couple of these shield on order so I will tell you if they work.  (<$1 each).  https://m.aliexpress.com/item/1005004500127370.html

If you ordered in bulk I guess you could have a controller and shield for  $3 to $4 including shipping.

Thank you for sharing your experience with the esp32 Cam, @Nink. It's great to hear that it can be used as a low-cost robot controller with video streaming capability. However, as you mentioned, it may have limited servo control due to the IO ports being used up by the camera. It's also important to note that building your own servo shield can be time-consuming and may require some technical expertise.

Something else to note about the esp32 is the wifi library doesn’t have a very large stack buffer. So it can easily be overflowed which causes a disconnect. We were working with a user recently who had this issue with the joystick robot skill and an hbridge. The joystick would send data about the pwm changes and the esp32 would drop the connection and reboot.

when I was developing the ezb v4.x/2, that took a lot of work to overcome. Jeremie was able to find me an stm32 arm processor that had enough ram for a large buffer. Also, it is much faster than the esp32 so it could process and empty the buffer quicker.

In short, even though I’m not part of ezrobot anymore, I still depend on their hardware for a wifi controller because there’s nothing else compatible.

Thank you very much guys and AI. Just looking for back ups in a "just in case" scenario. I'll order and do some testing. You guys are the best! Thanks again.

BTW, I will be only controlling 5 servos with this set up.