There are automatic feeders for dogs with a chip that you can program and variants that dispense the food via a motion sensor. The latter open entirely by themselves as soon as the animal approaches. Which automatic feeder is suitable for your dog depends on the intended purpose and your pet.
Your dog can either get its food at the times you want or use it by himself. However, the self-service feeding machines are not recommended for overweight and animals that like to eat too much. After all, these dogs will hardly space their meals, but rather eat everything at once. For weight control, an automated feeder is therefore recommended which allows you to select the individual portions and ensure that your four-legged friend is supplied with the appropriate quantity at the appropriate times.
A movement-controlled feed dispenser for the dog can be suitable for training. Fill the dispenser with treats and use it to reward your dog.