MP connected and downloaded firmware to the APM 2.5 without issue. But when I click the upper right Connect to get the parameters:
o When the USB is plugged in, COM4 Adrino Mega 2560 (COM4) appears [device setting is 115200 as is the MP pulldown]
o When click Connect
- MP sees the connection and it starts to connect
- APM blue light 3 times, red flashes twice, yellow light flashes, green is solid
o Then countdown to "No Heatbeat Packets Received"
- orange light stops
- green stays solid
o Under details, the following is shown.
I might be just tired, but can anyone help?
I'm powering via the USB. Nothing but the GPS/Mag and radio is powered by the APM (disconnected the receiver and ESCs). I've tried adding battery power, reinstalling the firmware (does that part just fine), differnt USB ports, restarting my computer, ...
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ok digging up an old post, BUT my issue is on topic with this one. I purchased this apm 2.6 unit, gps, compass, etc working exceptionally well. Even updated the firmware with no issues.
So, when I plug my receiver in, it will connect to MP intermittantly. When it does connect with receiver attached, none of the sensors work. Any ideas?
http://www.goodluckbuy.com/mini-apm-pro-flight-control-with-neo-7n-...
@Scott,
First off you have clone hardware which can be iffy.
Second, your PC's USB port might be able to supply enough current to the APM with the sensors and receiver attached at the same time.
You might want to consider using a powered USB Hub to help provide enough current to the APM.
Regards,
TCIII AVD
Yeah, I know its clone hardware, I cant afford to shell $300 for pixhawk hardware at the moment. I'm wondering if it doesnt like my receiver. Using turnigy 9x8c v2. Have a couple of spares, but the same issue on them all. Plugged usb into back of pc instead of front panel, definately getting better power now.
Solved! separated power leads off of ch1 on rx, and plugged into designated battery port, works correctly now
just used another USB cable and all is fine.
Finally Found the MavLink No Hearbeat Problem. Faulty Hardware.
- Returned the PixHawk
- When back from sailing in the Bay of Biscay, there was the new one on my desk
This time plugged each hardware item in one at a time.
- Just the Pixhawk ... connected
- Pixhawk + Receiver ... connected
- + Buzzer ... connected
- + Switch ... connected
- + GPS ... connected
- + Mag ... Mavlink no heatbeat
Tried different orders, always the mag. Took the integrated mag/compass off of my APM 2.5. It worked fine.
So, if you get a No Heatbeat, try connecting hardware one at a time. In my case, if the light next to the sim card didn't light up that meant something was wrong and I wasn't going to get a Heatbeat.
Sure hope that's it.
I have same problem.
MP 1.3.3 Build 1.1.5256.36415, Win 8.0 ugh
Can connect with 3DR telemetry radio fine.
Cannot connect using USB with radio disconnected.
Tried several cables, USB ports, re-booting with no connect.
APM 2.6 shows power. Worked with a previous MP version, but I do not recall which one.
Trying Auto connect at default baud rate of 115,200 yields error: "Timeout waiting for Autoscan…" and sometimes the window grays out.
Trying "Mega" port at various baud rates yields timeout " No heartbeat…"
Any and all help appreciated.
Can you configure sensors with the telemetry radio? If so, do you get a compass orientation?
I found that my compass was never providing an orientation. I tested voltage at the l2c port and found next to no voltage coming through. Power source of usb was definitely not the cause.
https://www.youtube.com/watch?v=1q6jjha5rgU
Thanks GregM. Problem went away in a weird way. Shut down computer last night with nothing working, started computer in morning and USB works. I did absolutely nothing to change the situation.
Good to hear. Have fun!
What about connecting via telemetry to narrow things down a bit?
My old APM 2.0's have been through the ringer and often have USB connection problems. Telemetry to the rescue!
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