Automatic chicken feeder

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Overview

The automatic chicken feeder is a project developed to automate chicken feeding. This system aims to enhance efficiency in poultry farming, optimize feed distribution, and minimize the daily maintenance efforts required for poultry care.

Features

• Automated feeding at pre-set times
• Customizable feeding schedules and quantities via a web-based user interface
• Secure storage of feeding data in the microcontroller's non-volatile memory
• Establishment of a secure Wi-Fi network for system configuration and monitoring
• Power-saving mode capability to extend battery life

Hardware

• ESP32DEV or ESP32S3 microcontroller (refer to images below)
• Motor control module, such as a servo motor
• DS3231 Real-Time Clock module for precise timekeeping
• Compatible with smartphones, tablets, or computers equipped with a web browser and Wi-Fi
• Versatile power supply options: battery or power adapter

3D Printed Components

Note: STL files for 3D printing will be available shortly.

This section outlines the key 3D printed components essential for assembling the automatic chicken feeder. These parts have been meticulously designed to ensure easy assembly and efficient operation of the feeder.

• Funnel at the top: Serves as the primary entry point for the feed, guiding it smoothly into the system.
• Spreading Disc: A critical component responsible for evenly distributing the feed.
• Spreading Disc Holder: Provides stable support to the spreading disc, ensuring reliable operation.
• Distance Holder: Aids in maintaining the correct spacing between various components.
• Battery Pack Holder: Securely houses the battery, ensuring a consistent power supply.
• Allen Wrench: A tool included for easy assembly and adjustment of the components.

Each component plays a vital role in the functionality of the feeder, contributing to its overall effectiveness and ease of use.

The image illustrates the key components of the feeder: the funnel, spreading disc, spreading disc holder, and distance holder. Centrally located, an Allen wrench is utilized to securely attach the spreading disc to the motor.

The Web Interface

The web interface provides a user-friendly way to manage your chicken feeder. Here are its main features:

• Settings: You can set up to 4 timers, each with its own feed quantity. This allows you to customize the feeding schedule to suit your chickens' needs. You can also set the time and day of the week for each timer, allowing for a feeding schedule that spans multiple days.

• Timer Activation/Deactivation: Each timer can be individually activated or deactivated. This gives you the flexibility to temporarily disable a feeding without deleting the timer.

• Manual Feeding: In addition to the scheduled feedings, you can also trigger a manual feeding at any time.

• Export Settings: You can export your settings for backup or for use on another device. This creates a .csv file that can be imported back into the web interface.

• Time Synchronization: The time on your browser is automatically synchronized with the real-time clock (RTC) on the chicken feeder when you access the web interface.

• Current Time Display: The web interface displays the current time, updated every second. This allows you to easily check the time and ensure that the feeding schedule is running as expected.

Note: While the images show the web interface being accessed via localhost:5000, this is for development purposes only. In a production environment, the web interface can be accessed via the IP address 192.168.4.1.

Installation and Configuration

1. Clone this repository.
2. Rename data/config.json-template to data/config.json and change the default values to your preferences.

mv data/config.json-template data/config.json

3. Install dependencies (VSCode extension PlatformIO IDE and PlatformIO Core).
4. Configure the platformio.ini file to select the correct board and port, or start a Nix shell.

nix-shell

Usage Instructions for ESP in Access Point Mode

When operating the ESP in Access Point mode, it generates a dedicated WiFi network. To access the ESP's web server, use the following default IP address: http://192.168.4.1. Simply open a web browser and input this IP address to interact with the web services and functionalities offered by the ESP32.

ESP32 Microcontroller Pinout

The table below details the pinout configuration of the ESP32 microcontroller. Please note that the pinout for the DS3231 RTC module and the motor control module may differ based on the manufacturer's specifications.

ESP32S3	ESP32DEV	RTC	Motor
4	21	SDA	-
5	22	SCL	-
7	4	INT	-
8	2	-	CONTROL
3.3V	3.3V	VCC	VCC
GND	GND	GND	GND

Flashing Firmware from the Release Section

Before proceeding, it's essential to create your own littlefs.bin file. For guidance on building this file, refer to the section about the Makefile. Without this, the configuration file will be absent, leading to improper functioning of the system.

In the release section, the latest firmware binaries for the microcontrollers are available. Use the commands below to flash these binaries onto the ESP32DEV or ESP32S3 microcontroller.

First, you must install the esptool:

pip install esptool

Note: Ensure you have Python and pip installed on your system before running the above command.

firmware.bin, bootloader.bin and partitions.bin (ESP32)

esptool.py --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader.bin 0x8000 partitions.bin 0x10000 firmware.bin

Change the --port parameter to match your system configuration and the path to the binary files.

firmware.bin (ESP8266)

esptool.py --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x10000 firmware.bin

Change the --port parameter to match your system configuration and the path to the binary files.

littlefs.bin (ESP32 and ESP8266)

esptool.py --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x290000 littlefs.bin

Change the --port parameter to match your system configuration and the path to the binary files.

Contributions and Collaboration Opportunities

This project thrives on community involvement and we wholeheartedly welcome contributions and collaboration. Whether you're looking to implement new features, optimize existing functionalities, or fix bugs, your input is invaluable.

• Creating Issues: If you encounter a bug or have a suggestion for an enhancement, please open a new issue on our repository. This helps us track and address diverse user needs and feedback.
• Pull Requests: Feel encouraged to fork the repository and submit pull requests. Whether it’s a minor fix or a substantial feature addition, your contributions help drive the project forward.
• Code Review and Discussion: Engage in discussions or review code changes submitted by others. Your insights and feedback are crucial for maintaining high-quality code and innovative features.
• Sharing Expertise and Knowledge: If you have expertise in a specific area relevant to the project, such as advanced programming techniques, efficient algorithms, or user interface design, please share your knowledge to enhance the project's development.

We're excited to see how you can help shape and evolve this project. Together, we can achieve more!

Build the project with the Makefile

To select the appropriate board for your project, modify the BOARD variable in the Makefile. The default setting for this variable is esp32s3.

To build the project with your specified settings, use the command below:

make build

To flash the project onto the microcontroller, use the command provided below:

make flash

To set up the file system, utilize the commands outlined below.

It is necessary to relocate or modify the config.json file within the ./data folder. For detailed instructions on configuring this file, please refer to the config.json-template file.

make fs
make uploadfs

For access to more advanced commands, utilize the help command.

make help

Sources and helpful links

• PlatformIO and ESP32: Comprehensive guide for using PlatformIO with ESP32 microcontrollers.
• ESP32 Datasheet: Detailed technical specifications of the ESP32 microcontroller.
• DS3231 RTC: Technical datasheet for the DS3231 Real-Time Clock module.
• RTC Interrupt: Guide to using interrupts with the DS3231 RTC on Arduino.
• RTC Synchronization: Project for synchronizing the RTC with external time sources.
• Battery Operation: Guide to powering ESP32 and ESP8266 with solar panels and battery level monitoring.
• ESP32 Deep Sleep: Instructions on using the ESP32's deep sleep mode and its wake-up sources.
• ESP32S3 Datasheet: Technical details and specifications of the ESP32S3 microcontroller.

Authors

• Friedjof Noweck
• Bernhard schlagheck