"Just an update, seems like I've managed to get it saving waypoints using the switch, maybe I didn't give it enough time for a good GPS fix (was testing on the ground). However still not sure how I can clear the mission from my TX?"

"They appear to, I did a reset to defaults in MP also. The fact the "bodgy" radio's FTDI RX LED is flashing even without opening the comport is kind of a giveaway though."

"Straight in, I've checked voltages and they all seem fine. I've tried both USB2 and 3 ports.
I have found something interesting though .. I have both APM's and their telem modules connected and running, and plugged both "RX" modules into the laptop.…"

"Sorry for the triple post, but this is really messing with my head. I have a friends spare APM and telemetry modules here. I hooked those up, plugged it into the laptop, works fine. Also plugged them into the desktop, also works fine. Plug my telem…"

"Just been trying a bit more .. I used doubledriver to create a copy of the FTDI drivers from my desktop - no good. Then I just copied mission planner entirely - still no good. Win is all up to date, tried all the latest drivers, few different…"

"Yep - unless it's not taking effect for some reason. Looking at the LED's for the FTDI chip when I try connect, they're blinking as if it's trying to start a connection, but the radio modules just continue doing their ~1hz red LED flash. I can…"

"The ESC's will go into throttle calibration mode again if your transmitter is sending a throttle value only a bit higher than nominal. Are you turning your transmitter on and moving all sticks to neutral before you power up the copter? Have you…"

"Has anyone tried this with the 3DR quads? I tried it on mine yesterday and the performance seems to be pretty good after auto tuning, but the values seem to be a fair way off compared to the already optimized versions on the APM? …"

"Actually, one issue I think I'm having is that I can correctly trigger a failsafe event by turning the TX off in stabilize, and it'll switch to RTL or LAND, however, once I turn the TX back on, the flight mode will switch back out of RTL/LAND and…"

"Yep, I can confirm this actually works now. I covered my TX antenna in aluminium foil, set up telemetry on my phone, left the quad in my room and basically walked out of the house, and stood behind the big, nicely grounded metal garage door. As…"

"Is your compass declination set correctly? Maybe try running compassmot and see what your interference value is too."

"Also make sure that your THR_MID parameter is set appropriately."