Week 4

Running Light Kit

This week, I decided to build a running light kit. Here it is right after opening the package:

I started soldering the components with a soldering iron. I simply followed the instructions:

Below is a closer look at the soldering progress:

Initially, I placed the timer in the wrong orientation. As a result, the lights would only turn on one at a time when I manually reapplied power. I removed the chip using two soldering irons and rotated it to the correct orientation. The final result can be seen here:

Unfortunately, it still does not work properly and I can’t identify the issue.

Custom Flashing Light Circuit

I also designed a custom flashing light in Fusion 360's electrical workspace. Below is the schematic:

The table below shows the essential components and recommended values for a normal flash rate or a slower flash (by increasing resistors or capacitors).