Ruined a bunch of seeed xaio boards (they stopped booting , junk), don't like them. This board display combo works well. Building in the capability to recover from a power failure during flight, and have the ability to erase the last peak altitude. Need to tweak the display for readability and comprehension. Also the colors give indications for flight readiness status. Red for erase/sensor error, blue for measuring altitude. If it stays red the BMP180 is not working or not plugged in. I had to do this because it was making me crazy wondering if the sensor was functioning or not sometimes.