Raspberry Pi powered Cat Feeder
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Original Dispenser: https://www.amazon.com/Petmate-Replendish-Microban-Automatic-Available/dp/B0057LAICC/ref=sr_1_10?dchild=1&keywords=pet+food+dispenser&qid=1585784987&sr=8-10 Servo motor used: https://www.amazon.com/gp/product/B019TOJPO4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 I used the circular attachment from the servo motor kit and hot glued it on to the Auger screw. The python script is simple. The way I wrote it is just to have to motor seek its minimum point, but there isn't one because the servo is 360 continuous rotation, it will just keep spinning counter clockwise till the script ends. power the servo with the pi's 5V. I have my servo signal connected to GPIO 17. The script: Servo.py ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ from gpiozero import Servo import time from time import sleep myGPIO=17 start = time.time() Duration = 3 myServo = Servo(myGPIO) while True: myServo.min() sleep(1) if time.time() > start + Duration: break exit() ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ saved Servo.py to my desktop I used cron as my scheduler, to start open up terminal and input: crontab -e inserted these lines at the very bottom ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 0 6 * * * python /home/pi/Desktop/Servo.py 0 12 * * * python /home/pi/Desktop/Servo.py 0 18 * * * python /home/pi/Desktop/Servo.py ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ what this does is run Servo.py at 6am, 12pm, and 6pm ctrl X, press y, and enter to save I like to restart cron after I make any changes In terminal input sudo service cron stop sudo service cron start and you should be good to go.
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