CatFeeder

thingiverse

My CatFeeder is equipped with a laser sensor that checks the food level in the food bowl. By turning the potentiometer, you change the set point of the food level inside the bowl. The first line of the display shows the current food level. The second line shows the set point you have selected. I've added the arduino nano software to my CatFeeder today. I've also added a Fritzing sketch that shows how to connect all the parts. All three 3D printed parts need to be glued together with some kind of superglue. I hope someone will make my pet feeder just like it is or with a modification. Here are the components I used: Motor: https://www.ebay.com/itm/Reversible-Electric-Worm-Gear-Motor-12V-8rpm-6mm-Output-Shaft-Gearmotor/183867809745?hash=item2acf601fd1:g:5X0AAOSwhkJdSXDb L298N: https://www.ebay.com/itm/L298N-DC-Stepper-Motor-Driver-Module-Dual-H-Bridge-Control-Board-for-Arduino/362863436137?hash=item547c58a169:g:gkYAAOSwe6FaJ5Df Laser sensor: https://www.ebay.com/itm/VL53l0x-Breakout-oF-Enfernungssensor-Modul-GY-VL53L0XV2-Distance-Sensor/254315928298?hash=item3b36691aea:g:XbsAAOSwerddQWW5 Oled: https://www.ebay.com/itm/0-96-I2C-IIC-Serial-128X64-128-64-Blue-OLED-LCD-LED-Display-Module-for-Arduino/312207439884?epid=0&hash=item48b103780c:g:kVUAAOSwZGRbZYfX Potentiometer: https://www.ebay.com/itm/WH148-B1K-B1M-Ohm-Linear-Taper-Rotary-Potentiometer-Panel-Pot-3-PIN-Knob-Cap/124031440318?hash=item1ce0d995be:m:m2NiUMv_JMPvd63eX1YnmRg Power connector: https://www.ebay.com/itm/20PCS-5-5mm-2-1mm-Female-JST-XH-Connectors-for-Arduino-Pi-Raspberry/292964341111?hash=item443d37d21f:g:VWIAAOSwB4pYQ8g Here's the arduino code: ```c void setup() { pinMode(7, OUTPUT); pinMode(8, OUTPUT); pinMode(9, OUTPUT); } void loop() { int sensorValue = (analogRead(A0)/5.065); VL53L0X_RangingMeasurementData_t measure; lox.rangingTest(&measure, false); if (measure.RangeStatus != 4) { display.clearDisplay(); display.setCursor(35,0); display.print(measure.RangeMilliMeter); // Oled shows actual food level in first line and setpoint food level in second line display.print(" mm"); display.setCursor(35,16); display.print(sensorValue); display.print(" mm"); display.display(); delay(50); } else { display.display(); display.clearDisplay(); return; } if(FoodState == HIGH) { if( (millis()- rememberTime) >= onDuration){ FoodState = LOW; rememberTime=millis(); } } else { if((millis()- rememberTime) >= offDuration){ FoodState = HIGH; rememberTime=millis(); } } digitalWrite(FEEDpin,FoodState); if(FoodState == HIGH && measure.RangeMilliMeter >= sensorValue){ // sensorValue = wanted food level you can adjust with potentiometer. digitalWrite(7, HIGH); digitalWrite(8, LOW); analogWrite(9,255); } else { digitalWrite(7, LOW); digitalWrite(8, LOW); } } ``` Happy printing!!