1: Tuesday, March 25th

Figure 1: Example train set with modular design

In class today, we worked through the details of many of the design goals for our project. Following Ms. Selan’s advice, we decided that our tracks will be built similarly to toy train tracks (like modular pieces), which are connected through puzzle pieces.

Additionally, we experimented with the PCB design in Fusion (watched videos, etc.). We also looked into a free online software called KiCAD, which is also used for PCB design, but it seems to have greater capabilities and be easier to use. We plan to keep looking more into each software, and getting familiar with each.

(Figure 2: Image of Youtube video using PCB on Fusion)

As we discussed with Ms. Selan, we plan to 3D print the chassis of our cars. We want to create this design once our code and wiring is almost established. This will give us a solid understanding of the dimensions necessary for our cars, since the wiring and motor control chip are necessary. Additionally, at this point, we also plan to order any wheels/motors for our cars to abide by our established dimensions.

Figure 3: Voltera circuit board printer

Also, for our cars, we decided that we will make two circuit boards, one with an RF Transmitter and a joystick to control the car (essentially) via Bluetooth and one with an RF Receiver that will be on the car. We opted not to use RF Transceivers because we do not need a two-way connection. We also looked at the H-bridge motor controller. The function of this component is to control the power from the battery to the car in the motor.

Lastly, we talked through how the circuit board printer works to become a little more familiar with the specifics. This was a great way of visualizing what we need to plan for in terms of creating and coding our circuit board. That way, we can know what we are trying to do with our electronic schematic.