https://github.com/deniscooper09/automatic_feeder
Automatic feeder for cats.
https://github.com/deniscooper09/automatic_feeder
atmega328p avr c cpp embedded esp internet-of-things nodemcu-esp8266
Last synced: 4 months ago
JSON representation
Automatic feeder for cats.
- Host: GitHub
- URL: https://github.com/deniscooper09/automatic_feeder
- Owner: DenisCooper09
- License: gpl-3.0
- Created: 2024-01-25T19:53:01.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-08-06T12:54:40.000Z (11 months ago)
- Last Synced: 2025-01-17T17:17:07.977Z (5 months ago)
- Topics: atmega328p, avr, c, cpp, embedded, esp, internet-of-things, nodemcu-esp8266
- Language: C++
- Homepage:
- Size: 13.2 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Automatic Feeder
Automatic feeder for cats.
## Features
- Web control panel.
- Anti-stuck system.
- ~1 litre tank for cat food.
## Future Features
- Feeding schedule.
- Feeding amount in grams.
- Worldwide control via MQTT protocol.
- Android/IOS app for controlling the feeder.
## Components
- 1x ATmega328P (arduino nano)
- 1x ESP8266
- 1x DVR8825 (driver)
- 1x NEMA17 (stepper motor)
- 1x RTC DS1307 (real time clock)
- 1x DC plug 2mm
- 2x 220Ω resistors
- 2x 3mm leds
- 1x v7805 (voltage regulator)
- 3x 470µF 16v capacitors
- 1x 10µF 6.3v capacitor
- 1x HDR-2.54 female 1x4
## Schematic
## PCB
## Firmware settings
### Internet connection
```c++
#define WIFI_SSID "wifi_network_name"
#define WIFI_PASSWORD "wifi_password"
```
Replace **wifi_network_name** with your wifi network name and **wifi_password** with your password.
> [!NOTE]
> You can connect to web control panel by entering ESP's IP address into your browser.
> Here is an instruction how to find ESP's IP address:
> 1. Connect ESP to a computer via USB.
> 2. Open serial monitor.
> 3. Restart ESP and you should see IP address being printed in serial monitor.
### Motor configuration
```c
#define SM_IMPULSE_DELAY 30
#define SM_FORWARD_STEPS 100
#define SM_BACKWARD_STEPS 94
#define SM_MICRO_STEPS MICRO_STEPS_32
#define SM_DIRECTION CLOCKWISE
```
**SM_IMPULSE_DELAY** - delay in microseconds before sending signal to driver. (Speed of motor)
**SM_FORWARD_STEPS** and **SM_BACKWARD_STEPS** - these are used for anti-stuck system.
Intead of rotating all the time forward motor makes **SM_FORWARD_STEPS** steps forward and **SM_BACKWARD_STEPS** steps backward.
This makes motor vibrate (if frequency (AKA **SM_IMPULSE_DELAY**) is small enough and motor is in microstepping mode), so pieces of cat food can't be stuck.
> [!CAUTION]
> Make sure that ***SM_FORWARD_STEPS* > *SM_BACKWARD_STEPS***
**SM_MICRO_STEPS** - number of microsteps per one full step. Enum values:
```c
enum MOTOR_MICRO_STEPS {
FULL_STEP,
MICRO_STEPS_2,
MICRO_STEPS_4,
MICRO_STEPS_8,
MICRO_STEPS_16,
MICRO_STEPS_32
};
```
**SM_DIRECTION** - direction of motor rotation. Enum values:
```c
enum MOTOR_DIRECTION {
ANTI_CLOCKWISE,
CLOCKWISE
};
```
> [!TIP]
> If motor rotates in wrong direction (screw moves cat food towards motor) then just reverse motor direction in code!
## Gallery
> [!NOTE]
> Photos were took while development so, circuit is assembled on a breadboard, not on PCB.
