Hi, just received my set of 3dr radios this morning and have installed them.
I'm unable to get a connection between the two, both have green blinking led's so working ok.
When connected to the APM planner (v1.1.83 mav 0.9) I can see the settings on the usb side but none from the uav side.
When the green LEDs are blinking, it means that the radios are not connected to each other.
It could be that the radios are configured differently.
If you connect to each radio individually and do the following, it should reset the radios to default configuration:
1) Connect to the radio with a terminal program ( typically 57600, N, 8, 1)
2) Type +++ , and wait for at least a second, do not press any other keys (not even enter)
3) The message "OK" should appear if you have entered command mode.
4) Typing ATI5 <enter> will give you a list of config settings for your info.
5) AT&F will reset the radio to factory defaults
6) AT&W will save the settings so they are available when the radio is powered up next time, or reset
7) ATZ will let you reset the radio via software.
If you do this for both radios and when you power them both up, the green led should be solid.
Hope it helps :)
Thanks for the reply,
Shouldn't they come with the same settings from the factory?
Will I need another cable for the uav side or can I connect through the planner and a usb cable?
The radios should be preconfigured and they should connect to each other on powerup.
The configuration of them is one relatively easy thing to reset.
The cable needed for the uav side is something that can convert USB into 3.3v, or 5v TTL serial.
I think 3DR has some of those on their website and other people have had luck with other converter cables.
I have used the TTL-232R-3V3 cables from FTDI, and a sparkfun USB to TTL converter with success.
thanks for that, postage is expensive and would cost more than the cable if I imported it, I'll try to find one locally.
What should the settings be? I'll try and change the computer side and see if I can get a lock onto the uav.
I just got my radio working tonight. Here is what I found and did. Air board is purple and does not match the picture on the store link. Looking at the radio board with the daughter board up, starting at the pin in the corner as 1 (I found the silkscreen labels on the air board correct as follows)
1 no connection
2 TX to the RX pin on the APM-2 board
3 RX to the TX pin on the APM-2
4 +5 to +5 on APM-2
5 no connection
6 ground to gnd on APM-2
I already had (or it loaded automatically) the FTDI driver, I am using Win 7 64 bit
Fumbled around to find I am on COM6
I could not get the 'Load Settings' button to work on the radio configuration, but the 'Link Stats..." blue text was visible and clicking it showed the link was working! Finally realized you have to be disconnected before the stats will load.
The PC side is ver 1.5 and the air side is 1.3 but everything seems to work correctly. But update only updates the PC side. ?
just ordered a cable here in nz, $50!!!
Those settings for the PC side radio look OK ...
Not sure why it is not connecting??...
I have found that some times the link does take a bit long to come up, power cycling one end has made it lock quicker.. On the UAV side, is it possible, just to supply +5v to the UAV radio only to isolate any other kind of interaction on other lines? - +5v is all it needs to power up and get a link lock if all is OK.
Another thought - how far apart are the radios when testing?
It also may be possible that the antennas may be damaged? - Do you have alternate antennas you can test?
the tx and rx are right next to each other, have tried a different antenna to no avail :(
Will wait for the cable to arrive tomorrow to check see what the problem is with the uav side.
Don't spend more than $10, shipped on a TTL serial cable. I use the cheapest Chinese 3.3v TTL serial converter you can buy and it works just fine. I think I paid about $4 for it. It should be a 5v TTL cable, but they must have hit the sweet spot to get both 3.3v and 5v to work fine.
The only complaint I have with the cheap converter is that the power it puts out is pretty dirty. That could also be the computers fault, but there's certainly no decent filtering on the board. It only causes a problem with a little GPS unit I have, and then it just makes the reception crappy. I ended up soldering a capacitor across the 5v and ground, which helped a fair bit.
already bought and on it's way unfortunately. I need to get this thing up in the air!
Lead has arrived, will let you all know how I get on.