20 bucks via paypal to anyone who can get this working...
so i installed mp not via the installer i didn't see it so i just manually loaded the driver and all worked fine. but realizing i didn't have the 3dr radio drivers i removed and reinstalled mp via the install tool and now i get com port does not exist when trying to connect.the driver is loaded i can see the driver and the board via device manger and i can see it in the drop down in mp to select com3 but it will not connect.Now i did make the mistake of having the 3dr radio plugged in when i connected to usb. could i hurt the board ? figuring i some how messed up windows and drivers, i loaded a fresh mp via a fresh download of the installer to a second computer...it loaded drivers etc... and i have the same problem com port does not exist ? its just on com 5 now on the new pc, i give up did i hurt it buy plugging it into usb with the 3dr plugged in ? Now to top it off windows will not see my uno board. some how the driver via mission planner has bricked my comports on both my pcs i tried to plugging in my wii aiop pro and it its dead too... windows still sees it pluged in ever when the apm2.5 is not and i can not un install it it just locks up ever on a reboot with no board plugged in its there? first machine is a xp laptop and the second is a vista desktop. at this point the both do not work and the trackpad on the laptop is dead i had to plug a mouse in ?i thing some how the apm some how bricked with the reload of mission planner and now has hijacked drivers that are messing with comp /usb's on both computers and i can not uninstall it ?
reinstall the device driver in device manager, should fix it
have you tried looking at your restore points in windows. You might be able to get back to a state before things started to go bad for you.
Are other things working when plugged into the USB port?
With my xbee I was in a situatuon where I thought that I had burned it off, but thaking it through the re programming I was able to get it to work again.
run safe mode and fix it trough there everything should be fine you could also try to hook it to a different usb port rear for example
next time first driver then device unless you cancel the windows auto driver installation and use your own drivers when plugged in for the first time
Hi guys. Just got brand new APM2.5. Old one (bought 10/12) runs fine but need to make second drone. Unfortunately MP refuses to connect to the new one ! Same PC connects to old one just fine. Tearing my hair out ! Strangely when I plug the older one into the USB port it shows up as Mega2560 on COM4. But when I plug in the new APM2.5 on the same physical USB port it shows up as Mega2560 but on COM8. Clues ?
Thanks, - Vijay
I have the same problem, have been pulling my hair over it for some time now. At this point, I have tried eveything under the sun, I can no longer connect my APM via USB. I can only see it when it is powered alone and broadcasting via the 3DR radios.
And since you can`t do a firmware upgrade over the radio, well, I am stuck. I am not happy with this because I wasted a huge amount of time and now the board sits in a box. Going back to the DJI Naza for a while until the bugs get ironed out, it`s just too frustrating. And my minimOSD won`t connect either, probably a corrupt bootloader. Royal pain, not time for this right now. I hope you figure it out and if you do, please post your findings! Good luck.
Just change COM port to COM8 in MP. It is dropdown near Connect button.
If it is not shows up then delete Mega in Device Manager, reboot.
Wait untill it finish with driver installation process, then run MP.
Hope this helps,
I changed the COM port to 8. Uninstalled, rebooted. POwered off .... MP will not connect to the new APM2.5. !!! I cannot even connect using the 3DR radios. HOWEVER, the older APM2.5 works just fine. Connects with USB or 3DR radios.
Some big issue but 3DRobotics customer support is still pretty non-existent so the only hope is someone smarter than me will figure this out. Anybody else got new APM2.5's in the last few days ? Do they connect ?
Thanks for the response. I have two laptops running Windows 7. I tried your suggestion on both of them but no luck. Just the same - timeout on connection. The installed driver is dated 11/15/2007 version 5.1.2600.0
My feeling is that this is the FTSI chip driver but the mega does not use the FTSI anymore so it does not work. I cannot find any other driver. Almost feel like throwing the APM in the trash.