<aside> 👥 Collaborate with Eric
</aside>
<aside> 🙌🏻 Special thanks to Thai for extra help
</aside>
Eric and I decided to design a test game of reaction time for project 1, and our original components of this device included following:
However, we found that most parts needed to be adjusted or given up when we explored it in practice.
We started to consider using photocells instead of buttons as switches because I thought photocells are more sensitive and respond faster than human "push" actions. But its disadvantage is that once the environment changes, we have to test its threshold every time, not to mention that Eric and I had set up two sets of devices separately, which increased the communication cost between us, so we finally went back and chose the pushbuttons.
My first version of the LED layout was three different colored LEDs- a blue one, a red one, and a green one. The blue one reminds the user that you should be ready for the game; the red one tells the user to "push the button"; the green one is the signal that proves the user has already pushed the button. But we finally used Eric's layout like a below schematic circuit:
The reason why we gave up the three colored LED versions is that they need more descriptions for a new user to understand what happened among these LEDs.
A spin board flashed in my mind after I finished servo motor labs in the week3 assignment. It is easy to open and close the connection part between the motor body and its spin arms, as well as to add a thin card design at that layer.
Confirming all components of our devices, we finally have realized it in this circuit layout:
