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To learn more about this project, read the wiki.
README.md 1.49 KiB

Zybo PCB Shield

The creation of the custom PCB shield was inspired by a fateful crash during one of MicroCART's demos for the 2018 ECpE Scholar's Fair. Multiple connectors were disconnected by the impact of the crash and the MicroCART team (who had just begun the project and were not familiar with the hardware setup) needed to find the issue quickly and resume demos. The creation of the PCB is intended to spare future groups from this particular set of hardware problems.

The PCB is meant to act as a custom shield for the Zybo boards mounted on the quads. It serves 3 main functions:

  1. Simplify quad hardware assmebly and secure connections to external devices (sensors, wifi bridge, motors, etc) using latching connectors.
  2. Provide multiple test points where the user can probe for signals even when the quad is in operation.
  3. Incorporate a voltage regulator to step the battery voltage down while also saving power and maintaining consistent output voltages.

Errata/Easy Mistakes

Version 2

  • UART0 lines (to WiFi) are flipped, can be fixed in constraints file.
  • RC controller PWM lines are reconfigurable in software and constraints, and depend on how the RC receiver is wired, so double check that you get good results if you change those.
  • Motor PWM lines are reconfigurable in software, and have to match the controller, so be careful with those as well.
  • The IMU has to be mounted with the label text down (the lables for the pins) and the mounting holes facing towards the PMOD test points