Communication System Build & Test Prep
Table of Contents
Vision for Build & Test Prep Phase
All parts of the Communication System that have been designed in MSD are to be assembled and tested in the upcoming months before the launch up to 100,000ft. The Communication must be rugged enough to keep in contact with the ground and relay its position to the APRS network.
The Communication board layout was finalized between the end of MSD I and the first week of MSD II.
The gerbers that were used to generate the board as well as the final board and schematic files are here:
Test Plan Summary
In the upcoming weeks, the main focus will be getting the communication board working on its own, and getting it ready to be integrated with the rest of the system. Because many of the subsystems are modeled after work done 2 years ago in P17104, much of the risk of the PCB has been minimized.
Below are the tests for the communication board's power and sensor circuitry, as well as tests for the APRS.
Test Plan For Communication BoardThe steps that will be used to test out the communication board are as follows:
Board Power Test
Board Signals Test
Other Communication System Tests
The APRS will also be tested in the next phase:
Risk and Problem Tracking
The main things still to be done for this phase are finalizing the design for the GRSS enable and Balloon cutdown enable. There are GPIOs on the Comm board that have been put to serve as a switch control.
A link to the Problem Tracking document can be found here:
An updated Risk Document can be found here:
Plans for the 6 Week Demo
- Demonstrate a working APRS using APRS.fi.
- Demonstrate working power and sensor circuitry on the communication board.
- Demonstrate the ability to use the baofeng radio to send and receive on the 2m band.