Hello, I have an problem with my Pixhawk FC. The problem is, it's not providing +5v power to some of the ports on face of the unit.
The only ports that's getting +5v are Telem#1 and the Power port. This is whether I use the USB port or battery(4S).
Gps and compass LEDs (red and green) blinks very dim for half a second, when I connect power but then goes out.
The Pixhawk play the tone's and blink Amber (on off, on off, on off). GPS and Compass show no life.
I would like to know, what I'm doing wrong with this setup(i'm a Newbie).
I have Mission Planner 1.3.25 and have in installed the latest Firmware.I've list the port's and the voltage reading on each of the pins.
The connector from the Power Module has +5.3V. It's is not transferring it to all of the port that require it.
If you require any additional information I'll gladly get it to you asap. I'm thankful for all the help and knowledge anyone can provide.
Pixhawk
5000mah 4(S) battery.
Gartt ML3508-980V
30A SimonK firmware brushless ESC. BEC: 5V 2A (Linear mode)x(6)
Telemetry and GPS antenna
Telem #1 GPS port
PIN SIGNAL VOLT PIN SIGNAL VOLT
1 (red) VCC +5V 1 (red) VCC +0V
2 (blk) TX (OUT) +3.3V 2 (blk) TX (OUT) +3.3V
3 (blk) RX (IN) +3.3V 3 (blk) RX (IN) +3.3V
4 (blk) CTS +3.3V 4 (blk) CAN2 TX +0V
5 (blk) RTS +0.0V 5 (blk) CAN2 RX +0V
6 (blk) GND GND 6 (blk) GND GND
Telem #2 ADC 3.3v
PIN SIGNAL VOLT PIN SIGNAL VOLT
1 (red) VCC +0V 1 (red) VCC +0V
2 (blk) TX (OUT) +3.3V 2 (blk) ADC IN +0V
3 (blk) RX (IN) +3.3V 3 (blk) GND GN
4 (blk) CTS +3.3V 4 (blk) ADC IN +0V
5 (blk) RTS +0.0V 5 (blk) GND GND
6 (blk) GND GND
Serial 4/5 Port ADC 6.6v
PIN SIGNAL VOLT PIN SIGNAL VOLT
1 (red) VCC +0V 1 (red) VCC +0V
2 (blk) TX (#4) +3.3V 2 (blk) ADC IN +0V
3 (blk) RX (#4) +3.3V 3 (blk) GND GND
4 (blk) TX (#5) +3.3V
5 (blk) RX (#5) +3.3V
6 (blk) GND GND
I2C CAN
PIN SIGNAL VOLT PIN SIGNAL VOLT
1 (red) VCC +0V 1 (red) VCC +0V
2 (blk) SCL +3.3V (pullups) 2 (blk) CAN_H +2.3V
3 (blk) SDA +3.3V (pullups) 3 (blk) CAN_L +2.3V
4 (blk) GND GND 4 (blk) GND GND
USB Port SPKT/DSM
pin(red) VCC +0V PIN SIGNALVOLT
pin(blk) +3.V #1 0.0V
pin(blk) +0V #2 +3.3V
pin(blk) GND GND #3 GND GND
Replies
yeah, same here, no voltage on GPS and I2C and also the SD seems to not be recognized most of the time. I also cant connect via USB without an external power source.
I am having similar issue... only when i try to plug a secondary GPS to Serial 4/5 Port, did you manged to fix it?