WEEK 11 (POSTER AND PAMPLET)

This day we had last briefing for Final Year Project for this semester. The requirement that needed went presenting this project at Gemilang Hall is a poster and pamplet. These were an outline of our poster and pamplet that we did for this project before present it to our assessor soon.

WEEK 10 (FINAL ASSEMBLY)

On this week, we are trying to figure out on creating a box for the circuit and also a motor that we want to attach to the food tank. Other than that, we have to buy Poly pipe PVC, tuperware ,hot glue gun ,perspex , a small aquarium and cardboard to create this protype of fish feeder. Here were the picture of final assembly and the prototype of this project .

WEEK 9 (RESULT)

After completing the project, it is tested and the result is show in picture below. Each circuit has difference output which is related to each other. The 4060 IC circuit is the main circuit on this project. Means that, if there is a problem on the 4060 circuit, then the other will be effected too. The astable 555 IC also depends on the 4060 timer. If not, the motor will be not running.

Behaviour of Output Signal

We can see that the Astable 555 IC will start counting when the output of 4060 IC goes HIGH. Then, when the complete counting, the output will LOW for a second and it will goes HIGH again. The HIGH and LOW output can be set-up by replacing the resistor and capacitor. The Monostable output will goes HIGH when the Astable output LOW. The output will goes HIGH depends on the value of resistor and capacitor. The monostable output is representing the duration of motor running. 

WEEK 8 (TROUBLESHOOTING)

After we complete the process of drilling and soldering, we have to tested and troubleshoot the circuit. Find the problems that found and tried to solve it. 

The problem that we found is the amount of food can’t be control. So after study the circuit operation and do some research about the IC’s. After the input is given by the adapter which is DC 6V~12V, the first IC’s which is 4060 get enough power to operate. The IC 4060 is 14-bit counter which will count and give output to timer directly. The IC 4060 sending pulses by “1” means high and “0” low. So, the timer operate when output from 4060 show high which is “1”.But, its seem like the timer does not working at all. It seem that ouput from IC 4060 doesn’t enough power to operate the timer directly.

            So, in litte bit of theoretically and also practically, to allow timer get enough power, put between them an IC 7411 which is AND gate. The AND gate function as multiplier of the high and low input which is “1” and “0”. As example, when AND gate get input which “1” and “0”. The ouput will become “0” and when the input get “1” and “1”, the AND gate output will become high which is “1”.

            So, in this case to achieve enough power for timer operate is the input AND get connected from output 4060 and VCC to keep one of the input stay high. When 4060 counting and sent high output to AND gate and the high output from AND gate will send to the timer which cause timer to operate the motor which is control the amount of food to feed the fish. 

We attach some of picture on troubleshooting :