The most significant risks we see right now are with the energy harvesting and its interaction with the GPS. The energy harvesting method we intend to employ may not be as efficient as we were hoping, since we were unable to find the correct kind of piezo tile, and generally we would not expect to get the same results as the paper. We are managing this risk by looking into alternative sources of energy harvesting. The other risk that we see right now is that GPS is a very finicky system, and we are worried that the voltage jumps from the piezo tiles will create a large amount of noise that may throw off the GPS signal. This is also being mitigated by looking into other potential sources of energy harvesting.
No set changes have been made to the system as of right now.