automatic pet feeder

thingiverse

2020 01 19 V2 pieces added I've just uploaded the files for the cover with servo support. This ensures providing the correct amount of food and prevents the cat from triggering the "weight sensor" while the food is being dispensed. Pet Feeder with a raspberry pi Zero W, motor stepper, and weight sensor. It's based on https://www.machs-selbst.net/kopie-von-retropie-emulationstation and https://tutorials-raspberrypi.com/digital-raspberry-pi-scale-weight-sensor-hx711/ There are 2 logs, one daily with the grams delivered, with the last row being the sum of the whole day. The other log has more detailed information with timestamps and any errors that may occur. The code should be improved to avoid providing wrong weight data if the pet is eating at the same time the system is dispensing food. It sends an email notification with the grams delivered. This is the Bill of Materials: RPI Zero W Stepper driver drv8825 Stepper motor nema 17 Weight sensor HX711 (I used the DFrobot one) DC 12v 1.5A DC Dc converter from 12v to 5v https://es.aliexpress.com/item/32799520043.html?spm=a2g0s.9042311.0.0.5ff263c0Q8XZ5B Dupont wires. Motor couple. https://www.banggood.com/CHIHAI-MOTOR-3456mm-Rigid-Flange-Coupling-Motor-Guide-Shaft-Coupler-Motor-Connector-p-1212810.html?rmmds=detail-top-buytogether-auto&p=4A031022825869201807&custlinkid=587837&ID=41225&cur_warehouse=CN Managed using a Python program configured like a service. This requires the following libraries: Log -> https://docs.python.org/2.6/library/logging.html for logging details Schedule -> for scheduling feeds Rpimotor lib -> https://github.com/gavinlyonsrepo/RpiMotorLib Gpiozero for servo motor control I also write the info in a gsheet using the spread library but not in this code version. I included the code and the sketchup file-> included in V2