Weight sensor + auto-rotating bowl prevents jams automatically. The best budget smart feeder with jam prevention.
The PETKIT Infinity brings smart engineering to the budget tier: a built-in weight sensor tracks exactly how much food remains and was dispensed, while the auto-rotating bowl design physically prevents kibble from bridging and jamming -- the most common failure mode in this category. At ~$60-80 with 5L capacity and 10 meals per day, it punches above its price. The trade-off is no camera and 2.4GHz only.