Week Two

As in week One we finished the preliminary design work, the second week we started to build the circuit in reality. 

This week's work will mainly include:

  •  Check whether the components work properly

  • Supplement the additional required components

  • Build up the basic circuit

  • Make some studies on the technical difficulties which encountered in the process of transferring the circuit from the design on the simulator to the reality



Problems:

1.      The infrared remote module only applies for the purchase of sensors for receiving infrared, and the remote control is missing.

2.      The number of pins of the ultrasonic ranging component actually purchased is different from that of the simulator. The code logic required for the three pins in the simulator and the actual four pins is also different.

3.      The LCD requires too many pins, and the number of interfaces on one Arduino is not enough.

4.      The LED light, which is used to reflect the working state of the LCD screen, should be steady on, but in fact it is always blinking, that is, the line connection is not stable, and the display quality is poor.


Solutions:

1.      Buy infrared remote controller.

2.      Understand the corresponding ultrasonic component, redesign this part of the circuit connection.

3.      (We just applied an extra Arduino for spare) Using two Arduino, separate the temperature sensor and the LCD part.

4.      Solder the wire to the corresponding pin of the LCD.



Week Three plans:

  • Use wood strips to build a simple model curtain

  • Use an Arduino for testing, connect only the test component, run the corresponding part of the code, and plug it into the circuit if it works in the desired way

  • Complete all the parts that need to be reprogrammed as discovered in Week Two

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