I purchased a kit using two uno boards and one board with another stacked on top acting as an RF remote.
I bought a freenove RC 4wd car with RF remote. I have had two issues first off I can't change car modes via the remote at all, and also today as of writing this post the remote seems to lose signal after a minute or two the light on the shield board under where the RF module connects goes out and you have to switch it off and then back on again.
This is the item I purchased.
I have since contacted the company via email and they are sending me another shield board and two RF modules but really should they have failed that quickly less then 2 days?