Purpose: An automatic pet feeder will help in feeding the pet on time with a specific quantity of food.
BPW34 Photodiode "High sensitivity Light Sensor"
Resistor 4.7 k.ohm
AA battery (Pack of 4)
4 x AA Battery Holder in Compact Mounting with On/Off Switch
9V Battery clip with standard DC male plug
4*4 Matrix Keyped
Makerbot 3d printer
Prusa 3d printer
I used fusion 360 to design the feeder.
First i thought about the mechanism of dispensing food. The first idea was to make a fan that rotates with specific angles to dispense the food. Just like the picture the first picture below.
Then i had changed this mechanism to another one. It is a screw that rotates inside a tube that has a hole on the top like the remaning photos.
The second part of the design is the container where we can storage the food
The third part to design is a plat
I used prusa printer to print the screw and makerbot printer for the tube. The screw took 43 gm and the tube took 53 gm
The container and the plate were made of plywood and cutted with laser cut machine.
note: the kerf was 0.1 mm
at first ,i made every task separetly:
i used a DC motor, ararduino,H bridge and a battery to make sure of the efficiency of the mechanism.
First, i have tried to connect the keypad to the arduino and know how it works.
Like the Keypad, i connected the arduino with the LCD and made it show a message.
i have tried to join the circuits which i had done each separetly, but i didn't manage to do it. i beleive that is beacuse some mistakes in the code and connections. If i had more time, it would have been easier to success in doing that.