HI there, this is pino from Madrid, i bought a PXFmini hat a couple months ago.
I have already done all the steps, but im failing to get the PXFmini into ESC calibration mode.
RC and receiver correctly binded (PPM mode)
Accel, compass and radio calibration done (min throttle value 988, max 2014)
I'm using Afro 20A ESC's
I'm following this steps to get into ESC calibration mode:
1. No props
2. Rc on, max throttle
3. Power the PFXmini (i hear the same musical tones as always, then short beeps until the apm is started, [green light])
4. I start apm. (I have disabled the apm service so i could launch it manually to paste the output)
[green and orange leeds on]
Here is the apm output:
erle@erle-brain-2 ~ $ cd /home/erle/PXFmini/
erle@erle-brain-2 ~/PXFmini $ sudo ./ArduCopter.elf
Raspberry Pi 1 with BCM2708!
Init APM:Copter V3.4-rc5 (0d9d101f)
Free RAM: 262144
FW Ver: 120
load_all took 749us
0 0 0 DataFlash_File: buffer size=16384
Sometimes i get more no legible output, sometimes not...
I wait several minutes and there is no secuential blue/orange led secuence o any aditional beepings...
By the way, in this state i can get the throttle down to it's minimal value and i can hear 2 short beeps followed by a long beep and i can even start the motors and speed them up as i get the throttle up.
But on the next reboot (sudo systemctl poweroff + unplug + plug baterry) even i can arm the motors and turn them on, when i throttle just a little the motors speeds up not gradually but twitching and vibrating with no control until i get the throttle to the lowest level.
I have tried to calibrate the ESC several times, using this method or setting manually the ESC_CALIBRATION to 3
I have tried with the default values and this ones:
MOT_PWM_MIN to 1000 + MOT_PWM_MIN to 2000 + MOT_PWM_TYPE to 1
As indicated on http://ardupilot.org/copter/docs/esc-calibration.html
But no matter what i try i'm unable to get into the ESC calibration mode... Any hints?