"5 minutes interruptions every, let say, 15-20 minutes for battery changes.
And obviously, disaster-struck areas have no power at all. So a generator set is mandatory to charge the batteries.
And for such applications, a captive balloon is far…"
"- Hey doctor, I am having a heart attack.
- Ok, coll, relax, I am sending you some TNT (medicine) using my UAV.
-...
- Hey doctor, I am really bad.
- Wait two minutes, the GPS must lock.
-....
- Hey doctor, your UAV is not arriving, I am dying.
-…"
"Just to avoid confusion, don't call Nick's board a "PX4 V2". Its name is AUAV-X1, wich could run the PX4 firmware.
I agree with Roberto about noise, both conducted and radiated, generated by the TPS regulator. Take care of ground line design,…"
"Just my two cents :-) : SD socket pcb is only tightened by its connector ???? Not sure it will stay in place when board is used in a rover.
Same remark for the small additional sensor board.
"C'est une histoire belge :-)
What surprise me is why some people still believe in such stories.
If you were student, will you admit a such noisy thing have evident negative impact on your exam results? And possibly on your future?"
"Just check each module power supply voltage.
3DR radio modules are 3.7-6 volts, but 3DR GPS modules are 5V only.
Other brands radios and GPS could be different. Some GPS modules are 3.3V
"- Nine one one, may I help you ?!?!?
- Hey officer, we saw a UFO !!!!
- ....are you drunk ????
- No, many persons here saw it !!!
- ....stop the fiesta and go sleeping !!!
- No no, we can still see it !!!
- .... tuuut tuuuut tuuuuut......"