Mini review time…and the news is good!
Armed with a 3D printer, entirely too much GHI gear and the latest power module from SolderMonkey I set out to create an all-in-one diagnostics kit for Skewworks. The device had to do double or even triple duty as it would also be the device my oldest son would use to work on his programming skills.
Before I get to the breakdown of the power module and the battery performance let’s check in on the hardware: FEZ Hydra, T35, Bluetooth, uSD, USB Serial, 6 Button module, LED7R and Tunes module.
All of the hardware was connected the entire time for this test. The screen refreshed every second and every second data was dumped to the uSD so I could see the final dropoff voltage.
While I’m disappointed the module from SolderMonkey requires the D slot (ruling out using it on the Cobra II which has none) it’s a fantastic module. The battery percentage always read zero, but hey it’s a beta driver. What did work was the temp and voltage readings.
I started the test with a fully charged 2600mAh LiPo which read at just above 4.2 volts. I let it run continuously for 5 hours until I had to turn it off since it was 1AM. I had a stop watch running to make sure I kept proper track of time, so I paused that too. In the morning I turn the board back on and resumed the timer.
During the entire run the voltage dropped down in the most steady and beautiful way. Making a battery gauge with this would be most simple (and was actually the point of the test, to find the end dropoff voltage)
The board [finally] gave up the ghost at 3.24724197volts after 8hrs 27minutes and 33seconds! Can you imagine if I’d actually done, literally anything at all to conserve battery life?
So, yeah. FEZ + SolderMonkey + LiPo = GOOD. You should invest in this setup.