• You can also use double-stick foam tape, “servo tape” is the best because the adhesive is
very strong and it won’t come loose accidentally.
• The Eggfinder TX board requires about 70 mA, with a start-up peak of up to 200 mA for a
few seconds or so. We recommend that whatever battery you use provide at least 200 mAH of
capacity, that will keep it going for about 3 hours. If you’re flying somewhere that may take a
little more hunting (i.e. a field of tall grass), you should bump the capacity up so that it doesn’t
run down before you can find it. Since the Eggfinder should tell you within a relatively small
distance where your rocket landed, it shouldn’t take you very long to find it, but an extra hour
or so of power is a good thing.
• There really isn’t any reason for having a battery switch, a simple connector such as a JST
will work fine; you can turn it on by connecting the battery. Since you have to hold the button
down to turn on the GPS and start transmitting, you can simply wait until shortly before your
flight to press the button, and save about 60 mA of power draw while you wait since the GPS
is in “standby” mode and the transmitter isn’t sending out any data and therefore isn’t drawing
much power.
