[Tuya Smart] Cat automatic feeder

Function introduction

1. Ability to automatically add food as planned. (This feature is not implemented)

2. APP/button to add food manually. (OK)

3. Automatically replenish water. (I forgot to buy a water pump and it was too late)

4. Battery-powered (not made yet because the casing is not made)

hardware

1. Use Tuya WBR3 WiFi & Bluetooth module to connect to Tuya platform APP, and use the APP to operate various functions

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2. Main control HK32F103CBT6 or other compatible main control

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3.0.96-inch OLED display provides on-site operation of feeding food

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4. Two RZ7899 motor control chips respectively control the motor to deliver grain and open the barn door (to prevent cockroaches and other insects from entering the barn)

Because a DC reduction motor is used, two limiters are used to detect the opening and closing of the door.

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5. The water pump is controlled by mos tube and water level detection device

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Making paper shells (you may make plastic shells later)

The basic principle is to put the cat food in the funnel shape of the storage bucket, then go down to the horizontally placed motor fan blades, and then move to the opening of the warehouse door on the other side under the drive of the motor to freely fall out.

Video and software interface

Since there is no extra mobile phone operation, the APP only screenshots 2 pictures for reference. The APP interface is the basic version provided by Tuya.

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The following is the record uploaded by the feeding operation

github code is here

A very crude test. It seems that the video can be uploaded after format conversion. video file