WEEK THREE & WEEK FOUR
The third week was dedicated towards testing the 2nd prototype after a few angles were modified. This sensor worked better than the first prototype as the horizontal warning distance increased from 25 cm to 32 cm. Although, further testing with this sensor mount revealed that the angles on the long range part had to be modified. The sensor mount was again revised using Solid Works and the final angles used were 45 and 54 degrees.
This prototype worked well and so I started working on the design for my PCB. I spent a few days trying to learn Eagle Cad for my PCB design. The schematic was drawn up with different components like voltage regulators, ferrous beads, 7.2MHz crystal clock, Atmel Xmega32A4 micro-controller, and so on. The following figure shows a portion of the schematic of the STOP PCB:
This prototype worked well and so I started working on the design for my PCB. I spent a few days trying to learn Eagle Cad for my PCB design. The schematic was drawn up with different components like voltage regulators, ferrous beads, 7.2MHz crystal clock, Atmel Xmega32A4 micro-controller, and so on. The following figure shows a portion of the schematic of the STOP PCB:
