I just received my APM2 and I have a bunch of problems.
One of them is the following:
I cannot power on my board through the output rail because my board hasn't got the connection for JP1. I can power it from the input rail (and the output rail seems correctly powered as well, checked with a voltmeter...).
Here you have a photo of my board:
As you can see, no pins have been soldered to the JP1 holes, and the holes are filled!
Is it normal? If this is a new building philosophy, you should maybe update the Wiki...
To circumvent the problem, can I use one BEC from one ESC to power the output rail and another one from another ESC to power the input rail?
Thank you very much,
I just looked at my board (received a few days ago). The pins and jumper are in place.
This is very strange, it seems like a lack during the assembly phase... Do you think it's still possible to solder pins on it? I would like to avoid to simple soldering of the two holes...
If it were me, I would probably solder some pins and put a jumper on myself. I'm reasonably comfortable soldering, but you may want to check with customer service first to see if they can help. It looks like a manufacturing error to me. Just out of curiosity, what other problems have you noted?
I have the UART0/2 port not working (I lost my afternoon before discovering that this appears to be a common issue, soldered pins on the UART0 connectors on the long side and it works.
I've waited more than 2 months for my board and with all these quality issues I'm not happy...
entropia666: Sorry to hear about the problems with your board, but the customer service dept at 3DR is there to resolve this, which is much better than trying to do it yourself (and possibly voiding the warranty). Please return the board for a free replacement: email email@example.com.
That is not what my board looked like. This seems to be a manufacturing bug on this board.
As others suggested, I would try and add a jumper, though you will need one that has the narrower pitch for that location.
I would advise against connecting two BECs unless you are very sure you have the rails properly set up and you know what you are doing (I didn't, bad outcome). Two power sources with slightly different voltages may cause power to flow through your board in an unexpected way, taking components into the blue-smoke-afterlife. I have a few scorched boards to attest to that.
So are you suggesting that the way I'm powering it (BEC on output rail and 5V battery) is not good?
I've never seen that before, and it's not the way the boards are supposed to ship. You can solder your own pins there or just create a solder bridge and that will fix it. I'll ping the factory and find out what happened.
I just soldered the bridge. Anyway, I must say that my board is not a lucky one, in addition to the jumper problem I have UART0/2 not working and SD card giving problems as well!