This PCB was designed for the OSU Robotics Club’s Inventory Management System.
The Drawer Sensing PCB (DSP) was designed to detect whether the drawers in a tool chest are open or closed.
Code
Board Pinout (out of date)
System Input
| Wire | Signal | Voltage |
| White | N/C | N/A |
| Black | Gnd | Gnd |
| Red | Rx | 3v3 |
| Green | Tx | 3v3 |
| Yellow | Vcc | +5v |
| Blue | N/C | N/A |
System Output
| Wire | Signal | Voltage |
| White | N/C | N/A |
| Black | Gnd | Gnd |
| Red | Rx | 3v3 |
| Green | Tx | 3v3 |
| Yellow | Vcc | +5v |
| Blue | N/C | N/A |
Schematic
Drawer Sensing PCB Schematic V2
Drawer Sensing PCB Schematic V1